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| author | Craig Jennings <c@cjennings.net> | 2025-08-14 22:58:58 -0500 |
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| committer | Craig Jennings <c@cjennings.net> | 2025-08-14 22:58:58 -0500 |
| commit | 82ba818ff456bcd6d56a06226e3f27e98fbb55c3 (patch) | |
| tree | 158cfc17b2f644a10f063cb546752cfaae12c97f /devdocs/c/numeric%2Ffenv%2Fferaiseexcept.html | |
| parent | 9278ddd4ea1a8b1a4c1edaa8894516e3f48d245b (diff) | |
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diff --git a/devdocs/c/numeric%2Ffenv%2Fferaiseexcept.html b/devdocs/c/numeric%2Ffenv%2Fferaiseexcept.html deleted file mode 100644 index ca35e49d..00000000 --- a/devdocs/c/numeric%2Ffenv%2Fferaiseexcept.html +++ /dev/null @@ -1,55 +0,0 @@ - <h1 id="firstHeading" class="firstHeading">feraiseexcept</h1> <table class="t-dcl-begin"> <tr class="t-dsc-header"> <th> Defined in header <code><fenv.h></code> </th> <th> </th> <th> </th> </tr> <tr class="t-dcl t-since-c99"> <td> <pre data-language="c">int feraiseexcept( int excepts );</pre> -</td> <td class="t-dcl-nopad"> </td> <td> <span class="t-mark-rev t-since-c99">(since C99)</span> </td> </tr> </table> <p>Attempts to raise all floating-point exceptions listed in <code>excepts</code> (a bitwise OR of the <a href="fe_exceptions" title="c/numeric/fenv/FE exceptions">floating-point exception macros</a>). If one of the exceptions is <code><a href="fe_exceptions" title="c/numeric/fenv/FE exceptions">FE_OVERFLOW</a></code> or <code><a href="http://en.cppreference.com/w/c/numeric/fenv/FE_exceptions"><span class="kw733">FE_UNDERFLOW</span></a></code>, this function may additionally raise <code><a href="fe_exceptions" title="c/numeric/fenv/FE exceptions">FE_INEXACT</a></code>. The order in which the exceptions are raised is unspecified, except that <code><a href="fe_exceptions" title="c/numeric/fenv/FE exceptions">FE_OVERFLOW</a></code> and <code><a href="http://en.cppreference.com/w/c/numeric/fenv/FE_exceptions"><span class="kw733">FE_UNDERFLOW</span></a></code> are always raised before <code><a href="fe_exceptions" title="c/numeric/fenv/FE exceptions">FE_INEXACT</a></code>.</p> -<h3 id="Parameters"> Parameters</h3> <table class="t-par-begin"> <tr class="t-par"> <td> excepts </td> <td> - </td> <td> bitmask listing the exception flags to raise </td> -</tr> -</table> <h3 id="Return_value"> Return value</h3> <p><code>0</code> if all listed exceptions were raised, non-zero value otherwise.</p> -<h3 id="Example"> Example</h3> <div class="t-example"> <div class="c source-c"><pre data-language="c">#include <stdio.h> -#include <fenv.h> - -#pragma STDC FENV_ACCESS ON - -void show_fe_exceptions(void) -{ - printf("current exceptions raised: "); - if(fetestexcept(FE_DIVBYZERO)) printf(" FE_DIVBYZERO"); - if(fetestexcept(FE_INEXACT)) printf(" FE_INEXACT"); - if(fetestexcept(FE_INVALID)) printf(" FE_INVALID"); - if(fetestexcept(FE_OVERFLOW)) printf(" FE_OVERFLOW"); - if(fetestexcept(FE_UNDERFLOW)) printf(" FE_UNDERFLOW"); - if(fetestexcept(FE_ALL_EXCEPT)==0) printf(" none"); - feclearexcept(FE_ALL_EXCEPT); - printf("\n"); -} - -double some_computation(void) -{ - /* Computation reaches a state that causes overflow. */ - int r = feraiseexcept(FE_OVERFLOW | FE_INEXACT); - printf("feraiseexcept() %s\n", (r?"fails":"succeeds")); - return 0.0; -} - -int main(void) -{ - some_computation(); - show_fe_exceptions(); - - return 0; -}</pre></div> <p>Output:</p> -<div class="text source-text"><pre data-language="c">feraiseexcept() succeeds -current exceptions raised: FE_INEXACT FE_OVERFLOW</pre></div> </div> <h3 id="References"> References</h3> <ul> -<li> C11 standard (ISO/IEC 9899:2011): </li> -<ul><li> 7.6.2.3 The feraiseexcept function (p: 210) </li></ul> -<li> C99 standard (ISO/IEC 9899:1999): </li> -<ul><li> 7.6.2.3 The feraiseexcept function (p: 191) </li></ul> -</ul> <h3 id="See_also"> See also</h3> <table class="t-dsc-begin"> <tr class="t-dsc"> <td> <div><a href="feclearexcept" title="c/numeric/fenv/feclearexcept"> <span class="t-lines"><span>feclearexcept</span></span></a></div> -<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div> </td> <td> clears the specified floating-point status flags <br> <span class="t-mark">(function)</span> </td> -</tr> <tr class="t-dsc"> <td> <div><a href="fetestexcept" title="c/numeric/fenv/fetestexcept"> <span class="t-lines"><span>fetestexcept</span></span></a></div> -<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div> </td> <td> determines which of the specified floating-point status flags are set <br> <span class="t-mark">(function)</span> </td> -</tr> <tr class="t-dsc"> <td colspan="2"> <span><a href="https://en.cppreference.com/w/cpp/numeric/fenv/feraiseexcept" title="cpp/numeric/fenv/feraiseexcept">C++ documentation</a></span> for <code>feraiseexcept</code> </td> -</tr> </table> <div class="_attribution"> - <p class="_attribution-p"> - © cppreference.com<br>Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.<br> - <a href="https://en.cppreference.com/w/c/numeric/fenv/feraiseexcept" class="_attribution-link">https://en.cppreference.com/w/c/numeric/fenv/feraiseexcept</a> - </p> -</div> |
