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+<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Numeric Properties</title><meta name="generator" content="DocBook XSL Stylesheets V1.74.0" /><meta name="keywords" content=" ISO C++ , library " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="fundamental_types.html" title="Chapter 4. Types" /><link rel="prev" href="fundamental_types.html" title="Chapter 4. Types" /><link rel="next" href="bk01pt02ch04s03.html" title="NULL" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Numeric Properties</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="fundamental_types.html">Prev</a> </td><th width="60%" align="center">Chapter 4. Types</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt02ch04s03.html">Next</a></td></tr></table><hr /></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.support.types.numeric_limits"></a>Numeric Properties</h2></div></div></div><p>
+ The header <code class="filename">limits</code> defines
+ traits classes to give access to various implementation
+ defined-aspects of the fundamental types. The traits classes --
+ fourteen in total -- are all specializations of the template class
+ <code class="classname">numeric_limits</code>, documented <a class="ulink" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/structstd_1_1numeric__limits.html" target="_top">here</a>
+ and defined as follows:
+ </p><pre class="programlisting">
+ template<typename T>
+ struct class
+ {
+ static const bool is_specialized;
+ static T max() throw();
+ static T min() throw();
+
+ static const int digits;
+ static const int digits10;
+ static const bool is_signed;
+ static const bool is_integer;
+ static const bool is_exact;
+ static const int radix;
+ static T epsilon() throw();
+ static T round_error() throw();
+
+ static const int min_exponent;
+ static const int min_exponent10;
+ static const int max_exponent;
+ static const int max_exponent10;
+
+ static const bool has_infinity;
+ static const bool has_quiet_NaN;
+ static const bool has_signaling_NaN;
+ static const float_denorm_style has_denorm;
+ static const bool has_denorm_loss;
+ static T infinity() throw();
+ static T quiet_NaN() throw();
+ static T denorm_min() throw();
+
+ static const bool is_iec559;
+ static const bool is_bounded;
+ static const bool is_modulo;
+
+ static const bool traps;
+ static const bool tinyness_before;
+ static const float_round_style round_style;
+ };
+ </pre></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="fundamental_types.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="fundamental_types.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk01pt02ch04s03.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 4. Types </td><td width="20%" align="center"><a accesskey="h" href="../spine.html">Home</a></td><td width="40%" align="right" valign="top"> NULL</td></tr></table></div></body></html>
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