127 lines
4.8 KiB
HTML
127 lines
4.8 KiB
HTML
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<title>fegetexceptflag</title>
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<basefont size="3"> <a name="fegetexceptflag"></a> <a name="tag_03_149"></a><!-- fegetexceptflag -->
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<!--header start-->
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<center><font size="2">The Open Group Base Specifications Issue 6<br>
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IEEE Std 1003.1-2001<br>
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Copyright © 2001 The IEEE and The Open Group, All Rights reserved.</font></center>
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<!--header end-->
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<hr size="2" noshade>
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<h4><a name="tag_03_149_01"></a>NAME</h4>
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<blockquote>fegetexceptflag, fesetexceptflag - get and set floating-point status flags</blockquote>
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<h4><a name="tag_03_149_02"></a>SYNOPSIS</h4>
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<blockquote class="synopsis">
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<p><code><tt>#include <<a href="../basedefs/fenv.h.html">fenv.h</a>><br>
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<br>
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int fegetexceptflag(fexcept_t *</tt><i>flagp</i><tt>, int</tt> <i>excepts</i><tt>);<br>
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int fesetexceptflag(const fexcept_t *</tt><i>flagp</i><tt>, int</tt> <i>excepts</i><tt>);<br>
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</tt></code></p>
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</blockquote>
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<h4><a name="tag_03_149_03"></a>DESCRIPTION</h4>
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<blockquote>
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<div class="box"><sup>[<a href="javascript:open_code('CX')">CX</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]"
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border="0"> The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the
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requirements described here and the ISO C standard is unintentional. This volume of IEEE Std 1003.1-2001 defers to
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the ISO C standard. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></div>
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<p>The <i>fegetexceptflag</i>() function shall attempt to store an implementation-defined representation of the states of the
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floating-point status flags indicated by the argument <i>excepts</i> in the object pointed to by the argument <i>flagp</i>.</p>
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<p>The <i>fesetexceptflag</i>() function shall attempt to set the floating-point status flags indicated by the argument
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<i>excepts</i> to the states stored in the object pointed to by <i>flagp</i>. The value pointed to by <i>flagp</i> shall have been
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set by a previous call to <i>fegetexceptflag</i>() whose second argument represented at least those floating-point exceptions
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represented by the argument <i>excepts</i>. This function does not raise floating-point exceptions, but only sets the state of the
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flags.</p>
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</blockquote>
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<h4><a name="tag_03_149_04"></a>RETURN VALUE</h4>
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<blockquote>
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<p>If the representation was successfully stored, <i>fegetexceptflag</i>() shall return zero. Otherwise, it shall return a non-zero
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value. If the <i>excepts</i> argument is zero or if all the specified exceptions were successfully set, <i>fesetexceptflag</i>()
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shall return zero. Otherwise, it shall return a non-zero value.</p>
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</blockquote>
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<h4><a name="tag_03_149_05"></a>ERRORS</h4>
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<blockquote>
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<p>No errors are defined.</p>
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</blockquote>
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<hr>
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<div class="box"><em>The following sections are informative.</em></div>
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<h4><a name="tag_03_149_06"></a>EXAMPLES</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_03_149_07"></a>APPLICATION USAGE</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_03_149_08"></a>RATIONALE</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_03_149_09"></a>FUTURE DIRECTIONS</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_03_149_10"></a>SEE ALSO</h4>
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<blockquote>
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<p><a href="feclearexcept.html"><i>feclearexcept</i>()</a> , <a href="feraiseexcept.html"><i>feraiseexcept</i>()</a> , <a href=
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"fetestexcept.html"><i>fetestexcept</i>()</a> , the Base Definitions volume of IEEE Std 1003.1-2001, <a href=
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"../basedefs/fenv.h.html"><i><fenv.h></i></a></p>
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</blockquote>
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<h4><a name="tag_03_149_11"></a>CHANGE HISTORY</h4>
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<blockquote>
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<p>First released in Issue 6. Derived from the ISO/IEC 9899:1999 standard.</p>
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<p>ISO/IEC 9899:1999 standard, Technical Corrigendum No. 1 is incorporated.</p>
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</blockquote>
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<div class="box"><em>End of informative text.</em></div>
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