<html lang="en"> <head> <title>RX-Float - Using as</title> <meta http-equiv="Content-Type" content="text/html"> <meta name="description" content="Using as"> <meta name="generator" content="makeinfo 4.13"> <link title="Top" rel="start" href="index.html#Top"> <link rel="up" href="RX_002dDependent.html#RX_002dDependent" title="RX-Dependent"> <link rel="prev" href="RX_002dDirectives.html#RX_002dDirectives" title="RX-Directives"> <link rel="next" href="RX_002dSyntax.html#RX_002dSyntax" title="RX-Syntax"> <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> <!-- This file documents the GNU Assembler "as". Copyright (C) 1991-2015 Free Software Foundation, Inc. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, with no Front-Cover Texts, and with no Back-Cover Texts. A copy of the license is included in the section entitled ``GNU Free Documentation License''. --> <meta http-equiv="Content-Style-Type" content="text/css"> <style type="text/css"><!-- pre.display { font-family:inherit } pre.format { font-family:inherit } pre.smalldisplay { font-family:inherit; font-size:smaller } pre.smallformat { font-family:inherit; font-size:smaller } pre.smallexample { font-size:smaller } pre.smalllisp { font-size:smaller } span.sc { font-variant:small-caps } span.roman { font-family:serif; font-weight:normal; } span.sansserif { font-family:sans-serif; font-weight:normal; } --></style> </head> <body> <div class="node"> <a name="RX-Float"></a> <a name="RX_002dFloat"></a> <p> Next: <a rel="next" accesskey="n" href="RX_002dSyntax.html#RX_002dSyntax">RX-Syntax</a>, Previous: <a rel="previous" accesskey="p" href="RX_002dDirectives.html#RX_002dDirectives">RX-Directives</a>, Up: <a rel="up" accesskey="u" href="RX_002dDependent.html#RX_002dDependent">RX-Dependent</a> <hr> </div> <h4 class="subsection">9.37.4 Floating Point</h4> <p><a name="index-floating-point_002c-RX-1864"></a><a name="index-RX-floating-point-1865"></a> The floating point formats generated by directives are these. <a name="index-g_t_0040code_007bfloat_007d-directive_002c-RX-1866"></a> <dl> <dt><code>.float</code><dd><code>Single</code> precision (32-bit) floating point constants. <p><a name="index-g_t_0040code_007bdouble_007d-directive_002c-RX-1867"></a><br><dt><code>.double</code><dd>If the <samp><span class="option">-m64bit-doubles</span></samp> command line option has been specified then then <code>double</code> directive generates <code>double</code> precision (64-bit) floating point constants, otherwise it generates <code>single</code> precision (32-bit) floating point constants. To force the generation of 64-bit floating point constants used the <code>dc.d</code> directive instead. </dl> </body></html>