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the monkey dances and laughs and sings and dances
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<h1>&lt;math.h&gt;: Mathematics</h1><table border="0" cellpadding="0" cellspacing="0">
<tr><td colspan="2"><h2>Defines</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga9bf5d952c5c93c70f9e66c9794d406c9">M_E</a>&nbsp;&nbsp;&nbsp;2.7182818284590452354</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gac5c747ee5bcbe892875672a0b9d8171c">M_LOG2E</a>&nbsp;&nbsp;&nbsp;1.4426950408889634074</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga9ed2b5582226f3896424ff6d2a3ebb14">M_LOG10E</a>&nbsp;&nbsp;&nbsp;0.43429448190325182765</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga92428112a5d24721208748774a4f23e6">M_LN2</a>&nbsp;&nbsp;&nbsp;0.69314718055994530942</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga0a53871497a155afe91424c28a8ec3c4">M_LN10</a>&nbsp;&nbsp;&nbsp;2.30258509299404568402</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gae71449b1cc6e6250b91f539153a7a0d3">M_PI</a>&nbsp;&nbsp;&nbsp;3.14159265358979323846</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga958e4508ed28ee5cc04249144312c15f">M_PI_2</a>&nbsp;&nbsp;&nbsp;1.57079632679489661923</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gaeb24420b096a677f3a2dc5a72b36bf22">M_PI_4</a>&nbsp;&nbsp;&nbsp;0.78539816339744830962</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga08dfac3cca9601a02fc88356cc078e1d">M_1_PI</a>&nbsp;&nbsp;&nbsp;0.31830988618379067154</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga97f6d6514d3d3dd50c3a2a6d622673db">M_2_PI</a>&nbsp;&nbsp;&nbsp;0.63661977236758134308</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga631ff334c4a1a6db2e8a7ff4acbe48a5">M_2_SQRTPI</a>&nbsp;&nbsp;&nbsp;1.12837916709551257390</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga66b3ab30f1332874326ed93969e496e0">M_SQRT2</a>&nbsp;&nbsp;&nbsp;1.41421356237309504880</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gacdbb2c2f9429f08916f03c8786d2d2d7">M_SQRT1_2</a>&nbsp;&nbsp;&nbsp;0.70710678118654752440</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga8abfcc76130f3f991d124dd22d7e69bc">NAN</a>&nbsp;&nbsp;&nbsp;__builtin_nan(&quot;&quot;)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga956e2723d559858d08644ac99146e910">INFINITY</a>&nbsp;&nbsp;&nbsp;__builtin_inf()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gacc171f0e087ed26abd701c827944a43b">cosf</a>&nbsp;&nbsp;&nbsp;cos</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga6776b8d1a4149fe35e282a76effd8a9d">sinf</a>&nbsp;&nbsp;&nbsp;sin</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga841e8ff746ff8b099a00ee83d2eed1d7">tanf</a>&nbsp;&nbsp;&nbsp;tan</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga3745ca949b1ef9df47fb2f52c2536e68">fabsf</a>&nbsp;&nbsp;&nbsp;fabs</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga7f41f3c7a21457008063af86e4eded3a">fmodf</a>&nbsp;&nbsp;&nbsp;fmod</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gad724f06c46a6f4ad699fece14f219552">cbrtf</a>&nbsp;&nbsp;&nbsp;cbrt</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gaae0bb7cd216d5b824d90da083e67021d">hypotf</a>&nbsp;&nbsp;&nbsp;hypot</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gadd592f5a4371f7154f95df59a22f5bef">squaref</a>&nbsp;&nbsp;&nbsp;square</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga322df600e1eaa1b96b0f994dcd49316f">floorf</a>&nbsp;&nbsp;&nbsp;floor</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gadb970de70c0549110ae218f6e244c871">ceilf</a>&nbsp;&nbsp;&nbsp;ceil</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga23413d0a6d19da20534e53f9870cf588">frexpf</a>&nbsp;&nbsp;&nbsp;frexp</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga374c9d6918a8bc1f8bbe054940795e0f">ldexpf</a>&nbsp;&nbsp;&nbsp;ldexp</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga1afc25e5db4387a8480d7cc4ed8d2e6b">expf</a>&nbsp;&nbsp;&nbsp;exp</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga218c068c47d79563f3fdbcf0ecb45220">coshf</a>&nbsp;&nbsp;&nbsp;cosh</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gadd3c4414cb88e4071380d6b1d6e69dcd">sinhf</a>&nbsp;&nbsp;&nbsp;sinh</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gae1308938bb768033031c381d148ad8f1">tanhf</a>&nbsp;&nbsp;&nbsp;tanh</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga3e085dcc8e09f400136816dbc2a56a25">acosf</a>&nbsp;&nbsp;&nbsp;acos</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga68e4969cdd396dc3d4ad5abef13880b1">asinf</a>&nbsp;&nbsp;&nbsp;asin</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga629de3dc6ca25cb7195928581f5359d2">atanf</a>&nbsp;&nbsp;&nbsp;atan</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gae31ff8b5990823ebb5d9746cc0843293">atan2f</a>&nbsp;&nbsp;&nbsp;atan2</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gaccce424ce6effa1bfd476479d55dde9c">logf</a>&nbsp;&nbsp;&nbsp;log</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gaf356651f154a73fef76067055cc54c16">log10f</a>&nbsp;&nbsp;&nbsp;log10</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gaa5a93b1934ef470b7a44ae47e6f2798b">powf</a>&nbsp;&nbsp;&nbsp;pow</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gaf3c3e624db1ecfe93b86972bca1dc4b3">isnanf</a>&nbsp;&nbsp;&nbsp;isnan</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gaf048a8eca1cce97556a96c532c0d2b56">isinff</a>&nbsp;&nbsp;&nbsp;isinf</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga9e007830d194ee4b5f0a27d2112a0c53">isfinitef</a>&nbsp;&nbsp;&nbsp;isfinite</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga1f0a9e760e0cd6faaf9619fd3aebfc3c">copysignf</a>&nbsp;&nbsp;&nbsp;copysign</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gacff7dd1db8fe93d3e52d5bd161d8117d">signbitf</a>&nbsp;&nbsp;&nbsp;signbit</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga1305189e3aa1637d4018365c1c08698b">fdimf</a>&nbsp;&nbsp;&nbsp;fdim</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga49c61eb85541c0504867fb05e3598679">fmaf</a>&nbsp;&nbsp;&nbsp;fma</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga645ac7eb8b4f0d7e09bcdcadc36044d5">fmaxf</a>&nbsp;&nbsp;&nbsp;fmax</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gaa591e76a6dddd36f3b745dbf8c8b90a9">fminf</a>&nbsp;&nbsp;&nbsp;fmin</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga329f9e84df43e59c5999e661aeab14ec">truncf</a>&nbsp;&nbsp;&nbsp;trunc</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gac6950642117c821388ec37e7b656a346">roundf</a>&nbsp;&nbsp;&nbsp;round</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga9031359ea4116de9288526c9e75fd8c2">lroundf</a>&nbsp;&nbsp;&nbsp;lround</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gaaf59e045a8a86a9be3370d69dec98a25">lrintf</a>&nbsp;&nbsp;&nbsp;lrint</td></tr>
<tr><td colspan="2"><h2>Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga542f5e42e0d3b5df63de0e34ec06bb40">cos</a> (double __x)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga46e799ece7e1dd323d22cdb53c81cd73">sin</a> (double __x)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gaa2c2303658b8b2555bc97cce3f806bda">tan</a> (double __x)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga0838a00d86d5e920c80aa7c7532a5559">fabs</a> (double __x)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gaefa8edb8c13adf7fb4b6b7dbe7261a24">fmod</a> (double __x, double __y)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga85861fee92c0904e9bb7a9875ee77579">modf</a> (double __x, double *__iptr)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">float&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gad180f98cb1dac86425c2f4df7faf2a15">modff</a> (float __x, float *__iptr)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gadd1e40e370b2165c186f72ec631b1853">sqrt</a> (double __x)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">float&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga37bde043e94a6f074c78f10518fb5d99">sqrtf</a> (float)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga9dff6efc5e63405ba23afb75eb3e4af0">cbrt</a> (double __x)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga711412ca8746712e0f19508118bf5154">hypot</a> (double __x, double __y)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gad11825ff1d6095a08b193c564d524aef">square</a> (double __x)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga0f0bf9ac2651b80846a9d9d89bd4cb85">floor</a> (double __x)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga61470611f23ceef5d3e9cf63d84cd8a7">ceil</a> (double __x)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga89f0cb053e3cdb0c9c952ef040087c80">frexp</a> (double __x, int *__pexp)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga91643e944a94341bd2a3ed1d3ffbae4f">ldexp</a> (double __x, int __exp)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga4ea549372745dda4018ab4b5a94483a6">exp</a> (double __x)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga2ec1caf3ba3b1ba62eccb3eddf029438">cosh</a> (double __x)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gaae45da8f56ba936dc8624157d1770faa">sinh</a> (double __x)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gaf4b72825a245b794090135251f0ead22">tanh</a> (double __x)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gae9c5790d8a29cbee8f54f8eb522decbc">acos</a> (double __x)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga98384ad60834911ec93ac5ae1af4cf0a">asin</a> (double __x)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga3abd1a0b68d157914a0ee01acaedfe5e">atan</a> (double __x)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga054230cd7e4c12958dbfac75ab6886e5">atan2</a> (double __y, double __x)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga7f7d556ab6b6235777a179647c152126">log</a> (double __x)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga3630cb8cef4560cf0d92e82ae05b03f0">log10</a> (double __x)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga41b41c307b8f96760e9c0c17180b241b">pow</a> (double __x, double __y)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga468be9ed380771eca5a18e812b2470d4">isnan</a> (double __x)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga18a7409e0b2341afaa41993960961772">isinf</a> (double __x)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static int&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gafb997a6a8d6dd0498238098826998aa0">isfinite</a> (double __x)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gaaebf29a8e50e6d8f88b6caf697021c86">copysign</a> (double __x, double __y)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga36894d73110fda52c84dfc050f1004bb">signbit</a> (double __x)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga63fcb86a13cf17110582fd6560fb09dd">fdim</a> (double __x, double __y)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gaf7fbeddc2e7721682e69f59be04ae9d5">fma</a> (double __x, double __y, double __z)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gafd8ab12e9d230e8213ac0c8b77c306d9">fmax</a> (double __x, double __y)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga577eee92b9969942de4d8d134d37c7b8">fmin</a> (double __x, double __y)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga1883497d16352bd92875499f1b39a4b6">trunc</a> (double __x)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga6eb04604d801054c5a2afe195d1dd75d">round</a> (double __x)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">long&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#gaa759c9a1684b0cf2c4c5d133771192ce">lround</a> (double __x)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">long&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__avr__math.html#ga9b995838b7bdd4886549dd7e308d0619">lrint</a> (double __x)</td></tr>
</table>
<hr/><a name="_details"></a><h2>Detailed Description</h2>
<div class="fragment"><pre class="fragment"><span class="preprocessor"> #include &lt;<a class="code" href="math_8h.html">math.h</a>&gt;</span>
</pre></div><p>This header file declares basic mathematics constants and functions.</p>
<dl class="user"><dt><b>Notes:</b></dt><dd><ul>
<li>In order to access the functions declared herein, it is usually also required to additionally link against the library <code>libm.a</code>. See also the related <a class="el" href="FAQ.html#faq_libm">FAQ entry</a>.</li>
<li>Math functions do not raise exceptions and do not change the <code>errno</code> variable. Therefore the majority of them are declared with const attribute, for better optimization by GCC. </li>
</ul>
</dd></dl>
<hr/><h2>Define Documentation</h2>
<a class="anchor" id="ga3e085dcc8e09f400136816dbc2a56a25"></a><!-- doxytag: member="math.h::acosf" ref="ga3e085dcc8e09f400136816dbc2a56a25" args="" -->
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<td class="memname">#define acosf&nbsp;&nbsp;&nbsp;acos</td>
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<p>The alias for <a class="el" href="group__avr__math.html#gae9c5790d8a29cbee8f54f8eb522decbc">acos()</a>. </p>
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<a class="anchor" id="ga68e4969cdd396dc3d4ad5abef13880b1"></a><!-- doxytag: member="math.h::asinf" ref="ga68e4969cdd396dc3d4ad5abef13880b1" args="" -->
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<td class="memname">#define asinf&nbsp;&nbsp;&nbsp;asin</td>
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<p>The alias for <a class="el" href="group__avr__math.html#ga98384ad60834911ec93ac5ae1af4cf0a">asin()</a>. </p>
</div>
</div>
<a class="anchor" id="gae31ff8b5990823ebb5d9746cc0843293"></a><!-- doxytag: member="math.h::atan2f" ref="gae31ff8b5990823ebb5d9746cc0843293" args="" -->
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<td class="memname">#define atan2f&nbsp;&nbsp;&nbsp;atan2</td>
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<p>The alias for <a class="el" href="group__avr__math.html#ga054230cd7e4c12958dbfac75ab6886e5">atan2()</a>. </p>
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<a class="anchor" id="ga629de3dc6ca25cb7195928581f5359d2"></a><!-- doxytag: member="math.h::atanf" ref="ga629de3dc6ca25cb7195928581f5359d2" args="" -->
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<td class="memname">#define atanf&nbsp;&nbsp;&nbsp;atan</td>
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<p>The alias for <a class="el" href="group__avr__math.html#ga3abd1a0b68d157914a0ee01acaedfe5e">atan()</a>. </p>
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</div>
<a class="anchor" id="gad724f06c46a6f4ad699fece14f219552"></a><!-- doxytag: member="math.h::cbrtf" ref="gad724f06c46a6f4ad699fece14f219552" args="" -->
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<td class="memname">#define cbrtf&nbsp;&nbsp;&nbsp;cbrt</td>
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<p>The alias for <a class="el" href="group__avr__math.html#ga9dff6efc5e63405ba23afb75eb3e4af0">cbrt()</a>. </p>
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<a class="anchor" id="gadb970de70c0549110ae218f6e244c871"></a><!-- doxytag: member="math.h::ceilf" ref="gadb970de70c0549110ae218f6e244c871" args="" -->
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<td class="memname">#define ceilf&nbsp;&nbsp;&nbsp;ceil</td>
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<p>The alias for <a class="el" href="group__avr__math.html#ga61470611f23ceef5d3e9cf63d84cd8a7">ceil()</a>. </p>
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<a class="anchor" id="ga1f0a9e760e0cd6faaf9619fd3aebfc3c"></a><!-- doxytag: member="math.h::copysignf" ref="ga1f0a9e760e0cd6faaf9619fd3aebfc3c" args="" -->
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<td class="memname">#define copysignf&nbsp;&nbsp;&nbsp;copysign</td>
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<p>The alias for <a class="el" href="group__avr__math.html#gaaebf29a8e50e6d8f88b6caf697021c86">copysign()</a>. </p>
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<a class="anchor" id="gacc171f0e087ed26abd701c827944a43b"></a><!-- doxytag: member="math.h::cosf" ref="gacc171f0e087ed26abd701c827944a43b" args="" -->
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<td class="memname">#define cosf&nbsp;&nbsp;&nbsp;cos</td>
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<p>The alias for <a class="el" href="group__avr__math.html#ga542f5e42e0d3b5df63de0e34ec06bb40">cos()</a>. </p>
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<a class="anchor" id="ga218c068c47d79563f3fdbcf0ecb45220"></a><!-- doxytag: member="math.h::coshf" ref="ga218c068c47d79563f3fdbcf0ecb45220" args="" -->
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<td class="memname">#define coshf&nbsp;&nbsp;&nbsp;cosh</td>
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<p>The alias for <a class="el" href="group__avr__math.html#ga2ec1caf3ba3b1ba62eccb3eddf029438">cosh()</a>. </p>
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<a class="anchor" id="ga1afc25e5db4387a8480d7cc4ed8d2e6b"></a><!-- doxytag: member="math.h::expf" ref="ga1afc25e5db4387a8480d7cc4ed8d2e6b" args="" -->
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<td class="memname">#define expf&nbsp;&nbsp;&nbsp;exp</td>
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<p>The alias for <a class="el" href="group__avr__math.html#ga4ea549372745dda4018ab4b5a94483a6">exp()</a>. </p>
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<a class="anchor" id="ga3745ca949b1ef9df47fb2f52c2536e68"></a><!-- doxytag: member="math.h::fabsf" ref="ga3745ca949b1ef9df47fb2f52c2536e68" args="" -->
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<td class="memname">#define fabsf&nbsp;&nbsp;&nbsp;fabs</td>
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<p>The alias for <a class="el" href="group__avr__math.html#ga0838a00d86d5e920c80aa7c7532a5559">fabs()</a>. </p>
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<a class="anchor" id="ga1305189e3aa1637d4018365c1c08698b"></a><!-- doxytag: member="math.h::fdimf" ref="ga1305189e3aa1637d4018365c1c08698b" args="" -->
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<td class="memname">#define fdimf&nbsp;&nbsp;&nbsp;fdim</td>
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<p>The alias for <a class="el" href="group__avr__math.html#ga63fcb86a13cf17110582fd6560fb09dd">fdim()</a>. </p>
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<a class="anchor" id="ga322df600e1eaa1b96b0f994dcd49316f"></a><!-- doxytag: member="math.h::floorf" ref="ga322df600e1eaa1b96b0f994dcd49316f" args="" -->
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<td class="memname">#define floorf&nbsp;&nbsp;&nbsp;floor</td>
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<p>The alias for <a class="el" href="group__avr__math.html#ga0f0bf9ac2651b80846a9d9d89bd4cb85">floor()</a>. </p>
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<a class="anchor" id="ga49c61eb85541c0504867fb05e3598679"></a><!-- doxytag: member="math.h::fmaf" ref="ga49c61eb85541c0504867fb05e3598679" args="" -->
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<td class="memname">#define fmaf&nbsp;&nbsp;&nbsp;fma</td>
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<p>The alias for <a class="el" href="group__avr__math.html#gaf7fbeddc2e7721682e69f59be04ae9d5">fma()</a>. </p>
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<a class="anchor" id="ga645ac7eb8b4f0d7e09bcdcadc36044d5"></a><!-- doxytag: member="math.h::fmaxf" ref="ga645ac7eb8b4f0d7e09bcdcadc36044d5" args="" -->
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<td class="memname">#define fmaxf&nbsp;&nbsp;&nbsp;fmax</td>
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<p>The alias for <a class="el" href="group__avr__math.html#gafd8ab12e9d230e8213ac0c8b77c306d9">fmax()</a>. </p>
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<a class="anchor" id="gaa591e76a6dddd36f3b745dbf8c8b90a9"></a><!-- doxytag: member="math.h::fminf" ref="gaa591e76a6dddd36f3b745dbf8c8b90a9" args="" -->
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<td class="memname">#define fminf&nbsp;&nbsp;&nbsp;fmin</td>
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<p>The alias for <a class="el" href="group__avr__math.html#ga577eee92b9969942de4d8d134d37c7b8">fmin()</a>. </p>
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<a class="anchor" id="ga7f41f3c7a21457008063af86e4eded3a"></a><!-- doxytag: member="math.h::fmodf" ref="ga7f41f3c7a21457008063af86e4eded3a" args="" -->
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<td class="memname">#define fmodf&nbsp;&nbsp;&nbsp;fmod</td>
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<p>The alias for <a class="el" href="group__avr__math.html#gaefa8edb8c13adf7fb4b6b7dbe7261a24">fmod()</a>. </p>
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<a class="anchor" id="ga23413d0a6d19da20534e53f9870cf588"></a><!-- doxytag: member="math.h::frexpf" ref="ga23413d0a6d19da20534e53f9870cf588" args="" -->
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<td class="memname">#define frexpf&nbsp;&nbsp;&nbsp;frexp</td>
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<p>The alias for <a class="el" href="group__avr__math.html#ga89f0cb053e3cdb0c9c952ef040087c80">frexp()</a>. </p>
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<a class="anchor" id="gaae0bb7cd216d5b824d90da083e67021d"></a><!-- doxytag: member="math.h::hypotf" ref="gaae0bb7cd216d5b824d90da083e67021d" args="" -->
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<td class="memname">#define hypotf&nbsp;&nbsp;&nbsp;hypot</td>
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<p>The alias for <a class="el" href="group__avr__math.html#ga711412ca8746712e0f19508118bf5154">hypot()</a>. </p>
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<a class="anchor" id="ga956e2723d559858d08644ac99146e910"></a><!-- doxytag: member="math.h::INFINITY" ref="ga956e2723d559858d08644ac99146e910" args="" -->
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<td class="memname">#define INFINITY&nbsp;&nbsp;&nbsp;__builtin_inf()</td>
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<p>INFINITY constant. </p>
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<a class="anchor" id="ga9e007830d194ee4b5f0a27d2112a0c53"></a><!-- doxytag: member="math.h::isfinitef" ref="ga9e007830d194ee4b5f0a27d2112a0c53" args="" -->
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<td class="memname">#define isfinitef&nbsp;&nbsp;&nbsp;isfinite</td>
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<p>The alias for <a class="el" href="group__avr__math.html#gafb997a6a8d6dd0498238098826998aa0">isfinite()</a>. </p>
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<a class="anchor" id="gaf048a8eca1cce97556a96c532c0d2b56"></a><!-- doxytag: member="math.h::isinff" ref="gaf048a8eca1cce97556a96c532c0d2b56" args="" -->
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<td class="memname">#define isinff&nbsp;&nbsp;&nbsp;isinf</td>
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<p>The alias for <a class="el" href="group__avr__math.html#ga18a7409e0b2341afaa41993960961772">isinf()</a>. </p>
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<a class="anchor" id="gaf3c3e624db1ecfe93b86972bca1dc4b3"></a><!-- doxytag: member="math.h::isnanf" ref="gaf3c3e624db1ecfe93b86972bca1dc4b3" args="" -->
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<td class="memname">#define isnanf&nbsp;&nbsp;&nbsp;isnan</td>
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<p>The alias for <a class="el" href="group__avr__math.html#ga468be9ed380771eca5a18e812b2470d4">isnan()</a>. </p>
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<a class="anchor" id="ga374c9d6918a8bc1f8bbe054940795e0f"></a><!-- doxytag: member="math.h::ldexpf" ref="ga374c9d6918a8bc1f8bbe054940795e0f" args="" -->
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<td class="memname">#define ldexpf&nbsp;&nbsp;&nbsp;ldexp</td>
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<p>The alias for <a class="el" href="group__avr__math.html#ga91643e944a94341bd2a3ed1d3ffbae4f">ldexp()</a>. </p>
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<a class="anchor" id="gaf356651f154a73fef76067055cc54c16"></a><!-- doxytag: member="math.h::log10f" ref="gaf356651f154a73fef76067055cc54c16" args="" -->
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<td class="memname">#define log10f&nbsp;&nbsp;&nbsp;log10</td>
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<p>The alias for <a class="el" href="group__avr__math.html#ga3630cb8cef4560cf0d92e82ae05b03f0">log10()</a>. </p>
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<a class="anchor" id="gaccce424ce6effa1bfd476479d55dde9c"></a><!-- doxytag: member="math.h::logf" ref="gaccce424ce6effa1bfd476479d55dde9c" args="" -->
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<td class="memname">#define logf&nbsp;&nbsp;&nbsp;log</td>
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<p>The alias for <a class="el" href="group__avr__math.html#ga7f7d556ab6b6235777a179647c152126">log()</a>. </p>
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<a class="anchor" id="gaaf59e045a8a86a9be3370d69dec98a25"></a><!-- doxytag: member="math.h::lrintf" ref="gaaf59e045a8a86a9be3370d69dec98a25" args="" -->
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<td class="memname">#define lrintf&nbsp;&nbsp;&nbsp;lrint</td>
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<p>The alias for <a class="el" href="group__avr__math.html#ga9b995838b7bdd4886549dd7e308d0619">lrint()</a>. </p>
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<a class="anchor" id="ga9031359ea4116de9288526c9e75fd8c2"></a><!-- doxytag: member="math.h::lroundf" ref="ga9031359ea4116de9288526c9e75fd8c2" args="" -->
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<td class="memname">#define lroundf&nbsp;&nbsp;&nbsp;lround</td>
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<p>The alias for <a class="el" href="group__avr__math.html#gaa759c9a1684b0cf2c4c5d133771192ce">lround()</a>. </p>
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<a class="anchor" id="ga08dfac3cca9601a02fc88356cc078e1d"></a><!-- doxytag: member="math.h::M_1_PI" ref="ga08dfac3cca9601a02fc88356cc078e1d" args="" -->
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<td class="memname">#define M_1_PI&nbsp;&nbsp;&nbsp;0.31830988618379067154</td>
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<p>The constant <em>1/pi</em>. </p>
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<a class="anchor" id="ga97f6d6514d3d3dd50c3a2a6d622673db"></a><!-- doxytag: member="math.h::M_2_PI" ref="ga97f6d6514d3d3dd50c3a2a6d622673db" args="" -->
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<td class="memname">#define M_2_PI&nbsp;&nbsp;&nbsp;0.63661977236758134308</td>
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<p>The constant <em>2/pi</em>. </p>
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</div>
<a class="anchor" id="ga631ff334c4a1a6db2e8a7ff4acbe48a5"></a><!-- doxytag: member="math.h::M_2_SQRTPI" ref="ga631ff334c4a1a6db2e8a7ff4acbe48a5" args="" -->
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<td class="memname">#define M_2_SQRTPI&nbsp;&nbsp;&nbsp;1.12837916709551257390</td>
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<div class="memdoc">
<p>The constant <em>2/sqrt</em>(pi). </p>
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<a class="anchor" id="ga9bf5d952c5c93c70f9e66c9794d406c9"></a><!-- doxytag: member="math.h::M_E" ref="ga9bf5d952c5c93c70f9e66c9794d406c9" args="" -->
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<td class="memname">#define M_E&nbsp;&nbsp;&nbsp;2.7182818284590452354</td>
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<p>The constant <em>e</em>. </p>
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<a class="anchor" id="ga0a53871497a155afe91424c28a8ec3c4"></a><!-- doxytag: member="math.h::M_LN10" ref="ga0a53871497a155afe91424c28a8ec3c4" args="" -->
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<td class="memname">#define M_LN10&nbsp;&nbsp;&nbsp;2.30258509299404568402</td>
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<p>The natural logarithm of the 10. </p>
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<a class="anchor" id="ga92428112a5d24721208748774a4f23e6"></a><!-- doxytag: member="math.h::M_LN2" ref="ga92428112a5d24721208748774a4f23e6" args="" -->
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<td class="memname">#define M_LN2&nbsp;&nbsp;&nbsp;0.69314718055994530942</td>
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<p>The natural logarithm of the 2. </p>
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<a class="anchor" id="ga9ed2b5582226f3896424ff6d2a3ebb14"></a><!-- doxytag: member="math.h::M_LOG10E" ref="ga9ed2b5582226f3896424ff6d2a3ebb14" args="" -->
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<td class="memname">#define M_LOG10E&nbsp;&nbsp;&nbsp;0.43429448190325182765</td>
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<p>The logarithm of the <em>e</em> to base 10. </p>
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<a class="anchor" id="gac5c747ee5bcbe892875672a0b9d8171c"></a><!-- doxytag: member="math.h::M_LOG2E" ref="gac5c747ee5bcbe892875672a0b9d8171c" args="" -->
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<td class="memname">#define M_LOG2E&nbsp;&nbsp;&nbsp;1.4426950408889634074</td>
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<div class="memdoc">
<p>The logarithm of the <em>e</em> to base 2. </p>
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<a class="anchor" id="gae71449b1cc6e6250b91f539153a7a0d3"></a><!-- doxytag: member="math.h::M_PI" ref="gae71449b1cc6e6250b91f539153a7a0d3" args="" -->
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<td class="memname">#define M_PI&nbsp;&nbsp;&nbsp;3.14159265358979323846</td>
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<p>The constant <em>pi</em>. </p>
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<a class="anchor" id="ga958e4508ed28ee5cc04249144312c15f"></a><!-- doxytag: member="math.h::M_PI_2" ref="ga958e4508ed28ee5cc04249144312c15f" args="" -->
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<td class="memname">#define M_PI_2&nbsp;&nbsp;&nbsp;1.57079632679489661923</td>
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<p>The constant <em>pi/2</em>. </p>
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<a class="anchor" id="gaeb24420b096a677f3a2dc5a72b36bf22"></a><!-- doxytag: member="math.h::M_PI_4" ref="gaeb24420b096a677f3a2dc5a72b36bf22" args="" -->
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<td class="memname">#define M_PI_4&nbsp;&nbsp;&nbsp;0.78539816339744830962</td>
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<p>The constant <em>pi/4</em>. </p>
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<a class="anchor" id="gacdbb2c2f9429f08916f03c8786d2d2d7"></a><!-- doxytag: member="math.h::M_SQRT1_2" ref="gacdbb2c2f9429f08916f03c8786d2d2d7" args="" -->
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<td class="memname">#define M_SQRT1_2&nbsp;&nbsp;&nbsp;0.70710678118654752440</td>
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<p>The constant <em>1/sqrt</em>(2). </p>
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<a class="anchor" id="ga66b3ab30f1332874326ed93969e496e0"></a><!-- doxytag: member="math.h::M_SQRT2" ref="ga66b3ab30f1332874326ed93969e496e0" args="" -->
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<td class="memname">#define M_SQRT2&nbsp;&nbsp;&nbsp;1.41421356237309504880</td>
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<p>The square root of 2. </p>
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<a class="anchor" id="ga8abfcc76130f3f991d124dd22d7e69bc"></a><!-- doxytag: member="math.h::NAN" ref="ga8abfcc76130f3f991d124dd22d7e69bc" args="" -->
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<td class="memname">#define NAN&nbsp;&nbsp;&nbsp;__builtin_nan(&quot;&quot;)</td>
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<p>NAN constant. </p>
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<a class="anchor" id="gaa5a93b1934ef470b7a44ae47e6f2798b"></a><!-- doxytag: member="math.h::powf" ref="gaa5a93b1934ef470b7a44ae47e6f2798b" args="" -->
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<td class="memname">#define powf&nbsp;&nbsp;&nbsp;pow</td>
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<p>The alias for <a class="el" href="group__avr__math.html#ga41b41c307b8f96760e9c0c17180b241b">pow()</a>. </p>
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<a class="anchor" id="gac6950642117c821388ec37e7b656a346"></a><!-- doxytag: member="math.h::roundf" ref="gac6950642117c821388ec37e7b656a346" args="" -->
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<td class="memname">#define roundf&nbsp;&nbsp;&nbsp;round</td>
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<p>The alias for <a class="el" href="group__avr__math.html#ga6eb04604d801054c5a2afe195d1dd75d">round()</a>. </p>
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<a class="anchor" id="gacff7dd1db8fe93d3e52d5bd161d8117d"></a><!-- doxytag: member="math.h::signbitf" ref="gacff7dd1db8fe93d3e52d5bd161d8117d" args="" -->
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<td class="memname">#define signbitf&nbsp;&nbsp;&nbsp;signbit</td>
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<p>The alias for <a class="el" href="group__avr__math.html#ga36894d73110fda52c84dfc050f1004bb">signbit()</a>. </p>
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<a class="anchor" id="ga6776b8d1a4149fe35e282a76effd8a9d"></a><!-- doxytag: member="math.h::sinf" ref="ga6776b8d1a4149fe35e282a76effd8a9d" args="" -->
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<td class="memname">#define sinf&nbsp;&nbsp;&nbsp;sin</td>
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<p>The alias for <a class="el" href="group__avr__math.html#ga46e799ece7e1dd323d22cdb53c81cd73">sin()</a>. </p>
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<a class="anchor" id="gadd3c4414cb88e4071380d6b1d6e69dcd"></a><!-- doxytag: member="math.h::sinhf" ref="gadd3c4414cb88e4071380d6b1d6e69dcd" args="" -->
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<td class="memname">#define sinhf&nbsp;&nbsp;&nbsp;sinh</td>
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<p>The alias for <a class="el" href="group__avr__math.html#gaae45da8f56ba936dc8624157d1770faa">sinh()</a>. </p>
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<a class="anchor" id="gadd592f5a4371f7154f95df59a22f5bef"></a><!-- doxytag: member="math.h::squaref" ref="gadd592f5a4371f7154f95df59a22f5bef" args="" -->
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<td class="memname">#define squaref&nbsp;&nbsp;&nbsp;square</td>
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<p>The alias for <a class="el" href="group__avr__math.html#gad11825ff1d6095a08b193c564d524aef">square()</a>. </p>
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<a class="anchor" id="ga841e8ff746ff8b099a00ee83d2eed1d7"></a><!-- doxytag: member="math.h::tanf" ref="ga841e8ff746ff8b099a00ee83d2eed1d7" args="" -->
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<td class="memname">#define tanf&nbsp;&nbsp;&nbsp;tan</td>
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<p>The alias for <a class="el" href="group__avr__math.html#gaa2c2303658b8b2555bc97cce3f806bda">tan()</a>. </p>
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<a class="anchor" id="gae1308938bb768033031c381d148ad8f1"></a><!-- doxytag: member="math.h::tanhf" ref="gae1308938bb768033031c381d148ad8f1" args="" -->
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<td class="memname">#define tanhf&nbsp;&nbsp;&nbsp;tanh</td>
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<p>The alias for <a class="el" href="group__avr__math.html#gaf4b72825a245b794090135251f0ead22">tanh()</a>. </p>
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<a class="anchor" id="ga329f9e84df43e59c5999e661aeab14ec"></a><!-- doxytag: member="math.h::truncf" ref="ga329f9e84df43e59c5999e661aeab14ec" args="" -->
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<td class="memname">#define truncf&nbsp;&nbsp;&nbsp;trunc</td>
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<p>The alias for <a class="el" href="group__avr__math.html#ga1883497d16352bd92875499f1b39a4b6">trunc()</a>. </p>
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<hr/><h2>Function Documentation</h2>
<a class="anchor" id="gae9c5790d8a29cbee8f54f8eb522decbc"></a><!-- doxytag: member="math.h::acos" ref="gae9c5790d8a29cbee8f54f8eb522decbc" args="(double __x)" -->
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<td class="memname">double acos </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em></td>
<td>&nbsp;)&nbsp;</td>
<td></td>
</tr>
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<p>The <a class="el" href="group__avr__math.html#gae9c5790d8a29cbee8f54f8eb522decbc">acos()</a> function computes the principal value of the arc cosine of <em>__x</em>. The returned value is in the range [0, pi] radians. A domain error occurs for arguments not in the range [-1, +1]. </p>
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<a class="anchor" id="ga98384ad60834911ec93ac5ae1af4cf0a"></a><!-- doxytag: member="math.h::asin" ref="ga98384ad60834911ec93ac5ae1af4cf0a" args="(double __x)" -->
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<td class="memname">double asin </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em></td>
<td>&nbsp;)&nbsp;</td>
<td></td>
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<p>The <a class="el" href="group__avr__math.html#ga98384ad60834911ec93ac5ae1af4cf0a">asin()</a> function computes the principal value of the arc sine of <em>__x</em>. The returned value is in the range [-pi/2, pi/2] radians. A domain error occurs for arguments not in the range [-1, +1]. </p>
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<a class="anchor" id="ga3abd1a0b68d157914a0ee01acaedfe5e"></a><!-- doxytag: member="math.h::atan" ref="ga3abd1a0b68d157914a0ee01acaedfe5e" args="(double __x)" -->
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<td class="memname">double atan </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em></td>
<td>&nbsp;)&nbsp;</td>
<td></td>
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<p>The <a class="el" href="group__avr__math.html#ga3abd1a0b68d157914a0ee01acaedfe5e">atan()</a> function computes the principal value of the arc tangent of <em>__x</em>. The returned value is in the range [-pi/2, pi/2] radians. </p>
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<a class="anchor" id="ga054230cd7e4c12958dbfac75ab6886e5"></a><!-- doxytag: member="math.h::atan2" ref="ga054230cd7e4c12958dbfac75ab6886e5" args="(double __y, double __x)" -->
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<td class="memname">double atan2 </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__y</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em></td><td>&nbsp;</td>
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<td></td>
<td>)</td>
<td></td><td></td><td></td>
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<p>The <a class="el" href="group__avr__math.html#ga054230cd7e4c12958dbfac75ab6886e5">atan2()</a> function computes the principal value of the arc tangent of <em>__y / __x</em>, using the signs of both arguments to determine the quadrant of the return value. The returned value is in the range [-pi, +pi] radians. </p>
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<a class="anchor" id="ga9dff6efc5e63405ba23afb75eb3e4af0"></a><!-- doxytag: member="math.h::cbrt" ref="ga9dff6efc5e63405ba23afb75eb3e4af0" args="(double __x)" -->
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<td class="memname">double cbrt </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em></td>
<td>&nbsp;)&nbsp;</td>
<td></td>
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<p>The <a class="el" href="group__avr__math.html#ga9dff6efc5e63405ba23afb75eb3e4af0">cbrt()</a> function returns the cube root of <em>__x</em>. </p>
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<a class="anchor" id="ga61470611f23ceef5d3e9cf63d84cd8a7"></a><!-- doxytag: member="math.h::ceil" ref="ga61470611f23ceef5d3e9cf63d84cd8a7" args="(double __x)" -->
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<td class="memname">double ceil </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em></td>
<td>&nbsp;)&nbsp;</td>
<td></td>
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<p>The <a class="el" href="group__avr__math.html#ga61470611f23ceef5d3e9cf63d84cd8a7">ceil()</a> function returns the smallest integral value greater than or equal to <em>__x</em>, expressed as a floating-point number. </p>
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<a class="anchor" id="gaaebf29a8e50e6d8f88b6caf697021c86"></a><!-- doxytag: member="math.h::copysign" ref="gaaebf29a8e50e6d8f88b6caf697021c86" args="(double __x, double __y)" -->
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<td class="memname">static double copysign </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__y</em></td><td>&nbsp;</td>
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<td>)</td>
<td></td><td></td><td><code> [static]</code></td>
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<p>The <a class="el" href="group__avr__math.html#gaaebf29a8e50e6d8f88b6caf697021c86">copysign()</a> function returns <em>__x</em> but with the sign of <em>__y</em>. They work even if <em>__x</em> or <em>__y</em> are NaN or zero. </p>
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<a class="anchor" id="ga542f5e42e0d3b5df63de0e34ec06bb40"></a><!-- doxytag: member="math.h::cos" ref="ga542f5e42e0d3b5df63de0e34ec06bb40" args="(double __x)" -->
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<td class="memname">double cos </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em></td>
<td>&nbsp;)&nbsp;</td>
<td></td>
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<p>The <a class="el" href="group__avr__math.html#ga542f5e42e0d3b5df63de0e34ec06bb40">cos()</a> function returns the cosine of <em>__x</em>, measured in radians. </p>
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<a class="anchor" id="ga2ec1caf3ba3b1ba62eccb3eddf029438"></a><!-- doxytag: member="math.h::cosh" ref="ga2ec1caf3ba3b1ba62eccb3eddf029438" args="(double __x)" -->
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<td class="memname">double cosh </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em></td>
<td>&nbsp;)&nbsp;</td>
<td></td>
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<p>The <a class="el" href="group__avr__math.html#ga2ec1caf3ba3b1ba62eccb3eddf029438">cosh()</a> function returns the hyperbolic cosine of <em>__x</em>. </p>
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<a class="anchor" id="ga4ea549372745dda4018ab4b5a94483a6"></a><!-- doxytag: member="math.h::exp" ref="ga4ea549372745dda4018ab4b5a94483a6" args="(double __x)" -->
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<td class="memname">double exp </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em></td>
<td>&nbsp;)&nbsp;</td>
<td></td>
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<p>The <a class="el" href="group__avr__math.html#ga4ea549372745dda4018ab4b5a94483a6">exp()</a> function returns the exponential value of <em>__x</em>. </p>
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<a class="anchor" id="ga0838a00d86d5e920c80aa7c7532a5559"></a><!-- doxytag: member="math.h::fabs" ref="ga0838a00d86d5e920c80aa7c7532a5559" args="(double __x)" -->
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<td class="memname">double fabs </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
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<td>&nbsp;)&nbsp;</td>
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<p>The <a class="el" href="group__avr__math.html#ga0838a00d86d5e920c80aa7c7532a5559">fabs()</a> function computes the absolute value of a floating-point number <em>__x</em>. </p>
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<a class="anchor" id="ga63fcb86a13cf17110582fd6560fb09dd"></a><!-- doxytag: member="math.h::fdim" ref="ga63fcb86a13cf17110582fd6560fb09dd" args="(double __x, double __y)" -->
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<td class="memname">double fdim </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em>, </td>
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<p>The <a class="el" href="group__avr__math.html#ga63fcb86a13cf17110582fd6560fb09dd">fdim()</a> function returns <em>max(__x - __y, 0)</em>. If <em>__x</em> or <em>__y</em> or both are NaN, NaN is returned. </p>
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<a class="anchor" id="ga0f0bf9ac2651b80846a9d9d89bd4cb85"></a><!-- doxytag: member="math.h::floor" ref="ga0f0bf9ac2651b80846a9d9d89bd4cb85" args="(double __x)" -->
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<td class="memname">double floor </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em></td>
<td>&nbsp;)&nbsp;</td>
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<p>The <a class="el" href="group__avr__math.html#ga0f0bf9ac2651b80846a9d9d89bd4cb85">floor()</a> function returns the largest integral value less than or equal to <em>__x</em>, expressed as a floating-point number. </p>
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<a class="anchor" id="gaf7fbeddc2e7721682e69f59be04ae9d5"></a><!-- doxytag: member="math.h::fma" ref="gaf7fbeddc2e7721682e69f59be04ae9d5" args="(double __x, double __y, double __z)" -->
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<td class="memname">double fma </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em>, </td>
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<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__y</em>, </td>
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<td class="paramname"> <em>__z</em></td><td>&nbsp;</td>
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<p>The <a class="el" href="group__avr__math.html#gaf7fbeddc2e7721682e69f59be04ae9d5">fma()</a> function performs floating-point multiply-add. This is the operation <em>(__x * __y) + __z</em>, but the intermediate result is not rounded to the destination type. This can sometimes improve the precision of a calculation. </p>
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<a class="anchor" id="gafd8ab12e9d230e8213ac0c8b77c306d9"></a><!-- doxytag: member="math.h::fmax" ref="gafd8ab12e9d230e8213ac0c8b77c306d9" args="(double __x, double __y)" -->
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<td class="memname">double fmax </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em>, </td>
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<p>The <a class="el" href="group__avr__math.html#gafd8ab12e9d230e8213ac0c8b77c306d9">fmax()</a> function returns the greater of the two values <em>__x</em> and <em>__y</em>. If an argument is NaN, the other argument is returned. If both arguments are NaN, NaN is returned. </p>
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<a class="anchor" id="ga577eee92b9969942de4d8d134d37c7b8"></a><!-- doxytag: member="math.h::fmin" ref="ga577eee92b9969942de4d8d134d37c7b8" args="(double __x, double __y)" -->
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<td class="memname">double fmin </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em>, </td>
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<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__y</em></td><td>&nbsp;</td>
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<p>The <a class="el" href="group__avr__math.html#ga577eee92b9969942de4d8d134d37c7b8">fmin()</a> function returns the lesser of the two values <em>__x</em> and <em>__y</em>. If an argument is NaN, the other argument is returned. If both arguments are NaN, NaN is returned. </p>
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<a class="anchor" id="gaefa8edb8c13adf7fb4b6b7dbe7261a24"></a><!-- doxytag: member="math.h::fmod" ref="gaefa8edb8c13adf7fb4b6b7dbe7261a24" args="(double __x, double __y)" -->
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<td class="memname">double fmod </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em>, </td>
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<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__y</em></td><td>&nbsp;</td>
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<p>The function <a class="el" href="group__avr__math.html#gaefa8edb8c13adf7fb4b6b7dbe7261a24">fmod()</a> returns the floating-point remainder of <em>__x / __y</em>. </p>
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<a class="anchor" id="ga89f0cb053e3cdb0c9c952ef040087c80"></a><!-- doxytag: member="math.h::frexp" ref="ga89f0cb053e3cdb0c9c952ef040087c80" args="(double __x, int *__pexp)" -->
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<td class="memname">double frexp </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em>, </td>
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<td class="paramtype">int *&nbsp;</td>
<td class="paramname"> <em>__pexp</em></td><td>&nbsp;</td>
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<p>The <a class="el" href="group__avr__math.html#ga89f0cb053e3cdb0c9c952ef040087c80">frexp()</a> function breaks a floating-point number into a normalized fraction and an integral power of 2. It stores the integer in the <code>int</code> object pointed to by <em>__pexp</em>.</p>
<p>If <em>__x</em> is a normal float point number, the <a class="el" href="group__avr__math.html#ga89f0cb053e3cdb0c9c952ef040087c80">frexp()</a> function returns the value <code>v</code>, such that <code>v</code> has a magnitude in the interval [1/2, 1) or zero, and <em>__x</em> equals <code>v</code> times 2 raised to the power <em>__pexp</em>. If <em>__x</em> is zero, both parts of the result are zero. If <em>__x</em> is not a finite number, the <a class="el" href="group__avr__math.html#ga89f0cb053e3cdb0c9c952ef040087c80">frexp()</a> returns <em>__x</em> as is and stores 0 by <em>__pexp</em>.</p>
<dl class="note"><dt><b>Note:</b></dt><dd>This implementation permits a zero pointer as a directive to skip a storing the exponent. </dd></dl>
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<a class="anchor" id="ga711412ca8746712e0f19508118bf5154"></a><!-- doxytag: member="math.h::hypot" ref="ga711412ca8746712e0f19508118bf5154" args="(double __x, double __y)" -->
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<td class="memname">double hypot </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em>, </td>
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<p>The <a class="el" href="group__avr__math.html#ga711412ca8746712e0f19508118bf5154">hypot()</a> function returns <em>sqrt(__x*__x + __y*__y)</em>. This is the length of the hypotenuse of a right triangle with sides of length <em>__x</em> and <em>__y</em>, or the distance of the point (<em>__x</em>, <em>__y</em>) from the origin. Using this function instead of the direct formula is wise, since the error is much smaller. No underflow with small <em>__x</em> and <em>__y</em>. No overflow if result is in range. </p>
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<a class="anchor" id="gafb997a6a8d6dd0498238098826998aa0"></a><!-- doxytag: member="math.h::isfinite" ref="gafb997a6a8d6dd0498238098826998aa0" args="(double __x)" -->
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<td class="memname">static int isfinite </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em></td>
<td>&nbsp;)&nbsp;</td>
<td><code> [static]</code></td>
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<p>The <a class="el" href="group__avr__math.html#gafb997a6a8d6dd0498238098826998aa0">isfinite()</a> function returns a nonzero value if <em>__x</em> is finite: not plus or minus infinity, and not NaN. </p>
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<a class="anchor" id="ga18a7409e0b2341afaa41993960961772"></a><!-- doxytag: member="math.h::isinf" ref="ga18a7409e0b2341afaa41993960961772" args="(double __x)" -->
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<td class="memname">int isinf </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
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<p>The function <a class="el" href="group__avr__math.html#ga18a7409e0b2341afaa41993960961772">isinf()</a> returns 1 if the argument <em>__x</em> is positive infinity, -1 if <em>__x</em> is negative infinity, and 0 otherwise.</p>
<dl class="note"><dt><b>Note:</b></dt><dd>The GCC 4.3 can replace this function with inline code that returns the 1 value for both infinities (gcc bug #35509). </dd></dl>
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<a class="anchor" id="ga468be9ed380771eca5a18e812b2470d4"></a><!-- doxytag: member="math.h::isnan" ref="ga468be9ed380771eca5a18e812b2470d4" args="(double __x)" -->
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<td class="memname">int isnan </td>
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<p>The function <a class="el" href="group__avr__math.html#ga468be9ed380771eca5a18e812b2470d4">isnan()</a> returns 1 if the argument <em>__x</em> represents a "not-a-number" (NaN) object, otherwise 0. </p>
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<a class="anchor" id="ga91643e944a94341bd2a3ed1d3ffbae4f"></a><!-- doxytag: member="math.h::ldexp" ref="ga91643e944a94341bd2a3ed1d3ffbae4f" args="(double __x, int __exp)" -->
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<td class="memname">double ldexp </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em>, </td>
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<td class="paramname"> <em>__exp</em></td><td>&nbsp;</td>
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<p>The <a class="el" href="group__avr__math.html#ga91643e944a94341bd2a3ed1d3ffbae4f">ldexp()</a> function multiplies a floating-point number by an integral power of 2. It returns the value of <em>__x</em> times 2 raised to the power <em>__exp</em>. </p>
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<a class="anchor" id="ga7f7d556ab6b6235777a179647c152126"></a><!-- doxytag: member="math.h::log" ref="ga7f7d556ab6b6235777a179647c152126" args="(double __x)" -->
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<td class="memname">double log </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em></td>
<td>&nbsp;)&nbsp;</td>
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<p>The <a class="el" href="group__avr__math.html#ga7f7d556ab6b6235777a179647c152126">log()</a> function returns the natural logarithm of argument <em>__x</em>. </p>
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<a class="anchor" id="ga3630cb8cef4560cf0d92e82ae05b03f0"></a><!-- doxytag: member="math.h::log10" ref="ga3630cb8cef4560cf0d92e82ae05b03f0" args="(double __x)" -->
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<td class="memname">double log10 </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em></td>
<td>&nbsp;)&nbsp;</td>
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<p>The <a class="el" href="group__avr__math.html#ga3630cb8cef4560cf0d92e82ae05b03f0">log10()</a> function returns the logarithm of argument <em>__x</em> to base 10. </p>
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<a class="anchor" id="ga9b995838b7bdd4886549dd7e308d0619"></a><!-- doxytag: member="math.h::lrint" ref="ga9b995838b7bdd4886549dd7e308d0619" args="(double __x)" -->
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<td class="memname">long lrint </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em></td>
<td>&nbsp;)&nbsp;</td>
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<p>The <a class="el" href="group__avr__math.html#ga9b995838b7bdd4886549dd7e308d0619">lrint()</a> function rounds <em>__x</em> to the nearest integer, rounding the halfway cases to the even integer direction. (That is both 1.5 and 2.5 values are rounded to 2). This function is similar to rint() function, but it differs in type of return value and in that an overflow is possible.</p>
<dl class="return"><dt><b>Returns:</b></dt><dd>The rounded long integer value. If <em>__x</em> is not a finite number or an overflow was, this realization returns the <code>LONG_MIN</code> value (0x80000000). </dd></dl>
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<a class="anchor" id="gaa759c9a1684b0cf2c4c5d133771192ce"></a><!-- doxytag: member="math.h::lround" ref="gaa759c9a1684b0cf2c4c5d133771192ce" args="(double __x)" -->
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<td class="memname">long lround </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em></td>
<td>&nbsp;)&nbsp;</td>
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<p>The <a class="el" href="group__avr__math.html#gaa759c9a1684b0cf2c4c5d133771192ce">lround()</a> function rounds <em>__x</em> to the nearest integer, but rounds halfway cases away from zero (instead of to the nearest even integer). This function is similar to <a class="el" href="group__avr__math.html#ga6eb04604d801054c5a2afe195d1dd75d">round()</a> function, but it differs in type of return value and in that an overflow is possible.</p>
<dl class="return"><dt><b>Returns:</b></dt><dd>The rounded long integer value. If <em>__x</em> is not a finite number or an overflow was, this realization returns the <code>LONG_MIN</code> value (0x80000000). </dd></dl>
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<a class="anchor" id="ga85861fee92c0904e9bb7a9875ee77579"></a><!-- doxytag: member="math.h::modf" ref="ga85861fee92c0904e9bb7a9875ee77579" args="(double __x, double *__iptr)" -->
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<td class="memname">double modf </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">double *&nbsp;</td>
<td class="paramname"> <em>__iptr</em></td><td>&nbsp;</td>
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<td>)</td>
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<p>The <a class="el" href="group__avr__math.html#ga85861fee92c0904e9bb7a9875ee77579">modf()</a> function breaks the argument <em>__x</em> into integral and fractional parts, each of which has the same sign as the argument. It stores the integral part as a double in the object pointed to by <em>__iptr</em>.</p>
<p>The <a class="el" href="group__avr__math.html#ga85861fee92c0904e9bb7a9875ee77579">modf()</a> function returns the signed fractional part of <em>__x</em>.</p>
<dl class="note"><dt><b>Note:</b></dt><dd>This implementation skips writing by zero pointer. However, the GCC 4.3 can replace this function with inline code that does not permit to use NULL address for the avoiding of storing. </dd></dl>
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<a class="anchor" id="gad180f98cb1dac86425c2f4df7faf2a15"></a><!-- doxytag: member="math.h::modff" ref="gad180f98cb1dac86425c2f4df7faf2a15" args="(float __x, float *__iptr)" -->
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<td class="memname">float modff </td>
<td>(</td>
<td class="paramtype">float&nbsp;</td>
<td class="paramname"> <em>__x</em>, </td>
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<td class="paramname"> <em>__iptr</em></td><td>&nbsp;</td>
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<p>An alias for <a class="el" href="group__avr__math.html#ga85861fee92c0904e9bb7a9875ee77579">modf()</a>. </p>
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<a class="anchor" id="ga41b41c307b8f96760e9c0c17180b241b"></a><!-- doxytag: member="math.h::pow" ref="ga41b41c307b8f96760e9c0c17180b241b" args="(double __x, double __y)" -->
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<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em>, </td>
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<td></td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__y</em></td><td>&nbsp;</td>
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<td>)</td>
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<p>The function <a class="el" href="group__avr__math.html#ga41b41c307b8f96760e9c0c17180b241b">pow()</a> returns the value of <em>__x</em> to the exponent <em>__y</em>. </p>
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<a class="anchor" id="ga6eb04604d801054c5a2afe195d1dd75d"></a><!-- doxytag: member="math.h::round" ref="ga6eb04604d801054c5a2afe195d1dd75d" args="(double __x)" -->
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<td class="memname">double round </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em></td>
<td>&nbsp;)&nbsp;</td>
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<p>The <a class="el" href="group__avr__math.html#ga6eb04604d801054c5a2afe195d1dd75d">round()</a> function rounds <em>__x</em> to the nearest integer, but rounds halfway cases away from zero (instead of to the nearest even integer). Overflow is impossible.</p>
<dl class="return"><dt><b>Returns:</b></dt><dd>The rounded value. If <em>__x</em> is an integral or infinite, <em>__x</em> itself is returned. If <em>__x</em> is <code>NaN</code>, then <code>NaN</code> is returned. </dd></dl>
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<a class="anchor" id="ga36894d73110fda52c84dfc050f1004bb"></a><!-- doxytag: member="math.h::signbit" ref="ga36894d73110fda52c84dfc050f1004bb" args="(double __x)" -->
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<td class="memname">int signbit </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em></td>
<td>&nbsp;)&nbsp;</td>
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<p>The <a class="el" href="group__avr__math.html#ga36894d73110fda52c84dfc050f1004bb">signbit()</a> function returns a nonzero value if the value of <em>__x</em> has its sign bit set. This is not the same as `<em>__x</em> &lt; 0.0', because IEEE 754 floating point allows zero to be signed. The comparison `-0.0 &lt; 0.0' is false, but `signbit (-0.0)' will return a nonzero value. </p>
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<a class="anchor" id="ga46e799ece7e1dd323d22cdb53c81cd73"></a><!-- doxytag: member="math.h::sin" ref="ga46e799ece7e1dd323d22cdb53c81cd73" args="(double __x)" -->
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<td class="memname">double sin </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em></td>
<td>&nbsp;)&nbsp;</td>
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<p>The <a class="el" href="group__avr__math.html#ga46e799ece7e1dd323d22cdb53c81cd73">sin()</a> function returns the sine of <em>__x</em>, measured in radians. </p>
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<a class="anchor" id="gaae45da8f56ba936dc8624157d1770faa"></a><!-- doxytag: member="math.h::sinh" ref="gaae45da8f56ba936dc8624157d1770faa" args="(double __x)" -->
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<td class="memname">double sinh </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em></td>
<td>&nbsp;)&nbsp;</td>
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<p>The <a class="el" href="group__avr__math.html#gaae45da8f56ba936dc8624157d1770faa">sinh()</a> function returns the hyperbolic sine of <em>__x</em>. </p>
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<a class="anchor" id="gadd1e40e370b2165c186f72ec631b1853"></a><!-- doxytag: member="math.h::sqrt" ref="gadd1e40e370b2165c186f72ec631b1853" args="(double __x)" -->
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<td class="memname">double sqrt </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em></td>
<td>&nbsp;)&nbsp;</td>
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<p>The <a class="el" href="group__avr__math.html#gadd1e40e370b2165c186f72ec631b1853">sqrt()</a> function returns the non-negative square root of <em>__x</em>. </p>
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<a class="anchor" id="ga37bde043e94a6f074c78f10518fb5d99"></a><!-- doxytag: member="math.h::sqrtf" ref="ga37bde043e94a6f074c78f10518fb5d99" args="(float)" -->
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<td class="memname">float sqrtf </td>
<td>(</td>
<td class="paramtype">float&nbsp;</td>
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<p>An alias for <a class="el" href="group__avr__math.html#gadd1e40e370b2165c186f72ec631b1853">sqrt()</a>. </p>
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<a class="anchor" id="gad11825ff1d6095a08b193c564d524aef"></a><!-- doxytag: member="math.h::square" ref="gad11825ff1d6095a08b193c564d524aef" args="(double __x)" -->
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<td class="memname">double square </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em></td>
<td>&nbsp;)&nbsp;</td>
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<p>The function <a class="el" href="group__avr__math.html#gad11825ff1d6095a08b193c564d524aef">square()</a> returns <em>__x * __x</em>.</p>
<dl class="note"><dt><b>Note:</b></dt><dd>This function does not belong to the C standard definition. </dd></dl>
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<a class="anchor" id="gaa2c2303658b8b2555bc97cce3f806bda"></a><!-- doxytag: member="math.h::tan" ref="gaa2c2303658b8b2555bc97cce3f806bda" args="(double __x)" -->
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<td class="memname">double tan </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em></td>
<td>&nbsp;)&nbsp;</td>
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<p>The <a class="el" href="group__avr__math.html#gaa2c2303658b8b2555bc97cce3f806bda">tan()</a> function returns the tangent of <em>__x</em>, measured in radians. </p>
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<a class="anchor" id="gaf4b72825a245b794090135251f0ead22"></a><!-- doxytag: member="math.h::tanh" ref="gaf4b72825a245b794090135251f0ead22" args="(double __x)" -->
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<td class="memname">double tanh </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em></td>
<td>&nbsp;)&nbsp;</td>
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<p>The <a class="el" href="group__avr__math.html#gaf4b72825a245b794090135251f0ead22">tanh()</a> function returns the hyperbolic tangent of <em>__x</em>. </p>
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<a class="anchor" id="ga1883497d16352bd92875499f1b39a4b6"></a><!-- doxytag: member="math.h::trunc" ref="ga1883497d16352bd92875499f1b39a4b6" args="(double __x)" -->
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<td class="memname">double trunc </td>
<td>(</td>
<td class="paramtype">double&nbsp;</td>
<td class="paramname"> <em>__x</em></td>
<td>&nbsp;)&nbsp;</td>
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<p>The <a class="el" href="group__avr__math.html#ga1883497d16352bd92875499f1b39a4b6">trunc()</a> function rounds <em>__x</em> to the nearest integer not larger in absolute value. </p>
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