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151 lines
8.2 KiB
HTML
151 lines
8.2 KiB
HTML
4 years ago
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- This manual describes how to install and use the GNU multiple precision
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arithmetic library, version 6.1.0.
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Copyright 1991, 1993-2015 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document under
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the terms of the GNU Free Documentation License, Version 1.3 or any later
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version published by the Free Software Foundation; with no Invariant Sections,
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with the Front-Cover Texts being "A GNU Manual", and with the Back-Cover
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Texts being "You have freedom to copy and modify this GNU Manual, like GNU
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software". A copy of the license is included in
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GNU Free Documentation License. -->
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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>Float Arithmetic (GNU MP 6.1.0)</title>
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<meta name="description" content="How to install and use the GNU multiple precision arithmetic library, version 6.1.0.">
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<meta name="keywords" content="Float Arithmetic (GNU MP 6.1.0)">
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<meta name="resource-type" content="document">
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<meta name="distribution" content="global">
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<meta name="Generator" content="makeinfo">
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<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index">
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<link href="Floating_002dpoint-Functions.html#Floating_002dpoint-Functions" rel="up" title="Floating-point Functions">
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<link href="Float-Comparison.html#Float-Comparison" rel="next" title="Float Comparison">
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<link href="Converting-Floats.html#Converting-Floats" rel="prev" title="Converting Floats">
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<style type="text/css">
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a.summary-letter {text-decoration: none}
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blockquote.indentedblock {margin-right: 0em}
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blockquote.smallindentedblock {margin-right: 0em; font-size: smaller}
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blockquote.smallquotation {font-size: smaller}
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div.display {margin-left: 3.2em}
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div.example {margin-left: 3.2em}
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div.lisp {margin-left: 3.2em}
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kbd {font-style: oblique}
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pre.display {font-family: inherit}
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pre.format {font-family: inherit}
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pre.menu-comment {font-family: serif}
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pre.menu-preformatted {font-family: serif}
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pre.smalldisplay {font-family: inherit; font-size: smaller}
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pre.smallformat {font-family: inherit; font-size: smaller}
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pre.smalllisp {font-size: smaller}
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span.nolinebreak {white-space: nowrap}
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span.roman {font-family: initial; font-weight: normal}
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span.sansserif {font-family: sans-serif; font-weight: normal}
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ul.no-bullet {list-style: none}
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-->
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</style>
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</head>
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<body lang="en">
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<a name="Float-Arithmetic"></a>
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<div class="header">
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<p>
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Next: <a href="Float-Comparison.html#Float-Comparison" accesskey="n" rel="next">Float Comparison</a>, Previous: <a href="Converting-Floats.html#Converting-Floats" accesskey="p" rel="prev">Converting Floats</a>, Up: <a href="Floating_002dpoint-Functions.html#Floating_002dpoint-Functions" accesskey="u" rel="up">Floating-point Functions</a> [<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<a name="Arithmetic-Functions-2"></a>
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<h3 class="section">7.5 Arithmetic Functions</h3>
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<a name="index-Float-arithmetic-functions"></a>
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<a name="index-Arithmetic-functions-2"></a>
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<dl>
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<dt><a name="index-mpf_005fadd"></a>Function: <em>void</em> <strong>mpf_add</strong> <em>(mpf_t <var>rop</var>, const mpf_t <var>op1</var>, const mpf_t <var>op2</var>)</em></dt>
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<dt><a name="index-mpf_005fadd_005fui"></a>Function: <em>void</em> <strong>mpf_add_ui</strong> <em>(mpf_t <var>rop</var>, const mpf_t <var>op1</var>, unsigned long int <var>op2</var>)</em></dt>
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<dd><p>Set <var>rop</var> to <em><var>op1</var> + <var>op2</var></em>.
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</p></dd></dl>
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<dl>
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<dt><a name="index-mpf_005fsub"></a>Function: <em>void</em> <strong>mpf_sub</strong> <em>(mpf_t <var>rop</var>, const mpf_t <var>op1</var>, const mpf_t <var>op2</var>)</em></dt>
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<dt><a name="index-mpf_005fui_005fsub"></a>Function: <em>void</em> <strong>mpf_ui_sub</strong> <em>(mpf_t <var>rop</var>, unsigned long int <var>op1</var>, const mpf_t <var>op2</var>)</em></dt>
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<dt><a name="index-mpf_005fsub_005fui"></a>Function: <em>void</em> <strong>mpf_sub_ui</strong> <em>(mpf_t <var>rop</var>, const mpf_t <var>op1</var>, unsigned long int <var>op2</var>)</em></dt>
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<dd><p>Set <var>rop</var> to <var>op1</var> - <var>op2</var>.
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</p></dd></dl>
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<dl>
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<dt><a name="index-mpf_005fmul"></a>Function: <em>void</em> <strong>mpf_mul</strong> <em>(mpf_t <var>rop</var>, const mpf_t <var>op1</var>, const mpf_t <var>op2</var>)</em></dt>
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<dt><a name="index-mpf_005fmul_005fui"></a>Function: <em>void</em> <strong>mpf_mul_ui</strong> <em>(mpf_t <var>rop</var>, const mpf_t <var>op1</var>, unsigned long int <var>op2</var>)</em></dt>
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<dd><p>Set <var>rop</var> to <em><var>op1</var> times <var>op2</var></em>.
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</p></dd></dl>
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<p>Division is undefined if the divisor is zero, and passing a zero divisor to the
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divide functions will make these functions intentionally divide by zero. This
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lets the user handle arithmetic exceptions in these functions in the same
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manner as other arithmetic exceptions.
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</p>
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<dl>
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<dt><a name="index-mpf_005fdiv"></a>Function: <em>void</em> <strong>mpf_div</strong> <em>(mpf_t <var>rop</var>, const mpf_t <var>op1</var>, const mpf_t <var>op2</var>)</em></dt>
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<dt><a name="index-mpf_005fui_005fdiv"></a>Function: <em>void</em> <strong>mpf_ui_div</strong> <em>(mpf_t <var>rop</var>, unsigned long int <var>op1</var>, const mpf_t <var>op2</var>)</em></dt>
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<dt><a name="index-mpf_005fdiv_005fui"></a>Function: <em>void</em> <strong>mpf_div_ui</strong> <em>(mpf_t <var>rop</var>, const mpf_t <var>op1</var>, unsigned long int <var>op2</var>)</em></dt>
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<dd><a name="index-Division-functions-2"></a>
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<p>Set <var>rop</var> to <var>op1</var>/<var>op2</var>.
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</p></dd></dl>
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<dl>
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<dt><a name="index-mpf_005fsqrt"></a>Function: <em>void</em> <strong>mpf_sqrt</strong> <em>(mpf_t <var>rop</var>, const mpf_t <var>op</var>)</em></dt>
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<dt><a name="index-mpf_005fsqrt_005fui"></a>Function: <em>void</em> <strong>mpf_sqrt_ui</strong> <em>(mpf_t <var>rop</var>, unsigned long int <var>op</var>)</em></dt>
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<dd><a name="index-Root-extraction-functions-1"></a>
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<p>Set <var>rop</var> to <em>the square root of <var>op</var></em>.
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</p></dd></dl>
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<dl>
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<dt><a name="index-mpf_005fpow_005fui"></a>Function: <em>void</em> <strong>mpf_pow_ui</strong> <em>(mpf_t <var>rop</var>, const mpf_t <var>op1</var>, unsigned long int <var>op2</var>)</em></dt>
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<dd><a name="index-Exponentiation-functions-1"></a>
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<a name="index-Powering-functions-1"></a>
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<p>Set <var>rop</var> to <em><var>op1</var> raised to the power <var>op2</var></em>.
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</p></dd></dl>
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<dl>
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<dt><a name="index-mpf_005fneg"></a>Function: <em>void</em> <strong>mpf_neg</strong> <em>(mpf_t <var>rop</var>, const mpf_t <var>op</var>)</em></dt>
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<dd><p>Set <var>rop</var> to -<var>op</var>.
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</p></dd></dl>
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<dl>
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<dt><a name="index-mpf_005fabs"></a>Function: <em>void</em> <strong>mpf_abs</strong> <em>(mpf_t <var>rop</var>, const mpf_t <var>op</var>)</em></dt>
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<dd><p>Set <var>rop</var> to the absolute value of <var>op</var>.
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</p></dd></dl>
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<dl>
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<dt><a name="index-mpf_005fmul_005f2exp"></a>Function: <em>void</em> <strong>mpf_mul_2exp</strong> <em>(mpf_t <var>rop</var>, const mpf_t <var>op1</var>, mp_bitcnt_t <var>op2</var>)</em></dt>
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<dd><p>Set <var>rop</var> to <em><var>op1</var> times 2 raised to
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<var>op2</var></em>.
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</p></dd></dl>
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<dl>
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<dt><a name="index-mpf_005fdiv_005f2exp"></a>Function: <em>void</em> <strong>mpf_div_2exp</strong> <em>(mpf_t <var>rop</var>, const mpf_t <var>op1</var>, mp_bitcnt_t <var>op2</var>)</em></dt>
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<dd><p>Set <var>rop</var> to <em><var>op1</var> divided by 2 raised to
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<var>op2</var></em>.
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</p></dd></dl>
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<hr>
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<div class="header">
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<p>
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Next: <a href="Float-Comparison.html#Float-Comparison" accesskey="n" rel="next">Float Comparison</a>, Previous: <a href="Converting-Floats.html#Converting-Floats" accesskey="p" rel="prev">Converting Floats</a>, Up: <a href="Floating_002dpoint-Functions.html#Floating_002dpoint-Functions" accesskey="u" rel="up">Floating-point Functions</a> [<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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</body>
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</html>
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