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<h1 id="firstHeading" class="firstHeading">islessgreater</h1> <table class="t-dcl-begin"> <tr class="t-dsc-header"> <th> Defined in header <code><math.h></code> </th> <th> </th> <th> </th> </tr> <tr class="t-dcl t-since-c99"> <td> <pre data-language="c">#define islessgreater(x, y) /* implementation defined */</pre>
</td> <td class="t-dcl-nopad"> </td> <td> <span class="t-mark-rev t-since-c99">(since C99)</span> </td> </tr> </table> <p>Determines if the floating point number <code>x</code> is less than or greater than the floating-point number <code>y</code>, without setting floating-point exceptions.</p>
<h3 id="Parameters"> Parameters</h3> <table class="t-par-begin"> <tr class="t-par"> <td> x </td> <td> - </td> <td> floating point value </td>
</tr> <tr class="t-par"> <td> y </td> <td> - </td> <td> floating point value </td>
</tr>
</table> <h3 id="Return_value"> Return value</h3> <p>Nonzero integral value if <code>x < y || x > y</code>, <code>0</code> otherwise.</p>
<h3 id="Notes"> Notes</h3> <p>The built-in <code>operator<</code> and <code>operator></code> for floating-point numbers may raise <code><a href="../fenv/fe_exceptions" title="c/numeric/fenv/FE exceptions">FE_INVALID</a></code> if one or both of the arguments is NaN. This function is a "quiet" version of the expression <code>x < y || x > y</code>. The macro does not evaluate x and y twice.</p>
<h3 id="Example"> Example</h3> <div class="t-example"> <div class="c source-c"><pre data-language="c">#include <stdio.h>
#include <math.h>
int main(void)
{
printf("islessgreater(2.0,1.0) = %d\n", islessgreater(2.0,1.0));
printf("islessgreater(1.0,2.0) = %d\n", islessgreater(1.0,2.0));
printf("islessgreater(1.0,1.0) = %d\n", islessgreater(1.0,1.0));
printf("islessgreater(INFINITY,1.0) = %d\n", islessgreater(INFINITY,1.0));
printf("islessgreater(1.0,NAN) = %d\n", islessgreater(1.0,NAN));
return 0;
}</pre></div> <p>Possible output:</p>
<div class="text source-text"><pre data-language="c">islessgreater(2.0,1.0) = 1
islessgreater(1.0,2.0) = 1
islessgreater(1.0,1.0) = 0
islessgreater(INFINITY,1.0) = 1
islessgreater(1.0,NAN) = 0</pre></div> </div> <h3 id="References"> References</h3> <ul>
<li> C11 standard (ISO/IEC 9899:2011): </li>
<ul>
<li> 7.12.14.5 The islessgreater macro (p: 261) </li>
<li> F.10.11 Comparison macros (p: 531) </li>
</ul>
<li> C99 standard (ISO/IEC 9899:1999): </li>
<ul><li> 7.12.14.5 The islessgreater macro (p: 241-242) </li></ul>
</ul> <h3 id="See_also"> See also</h3> <table class="t-dsc-begin"> <tr class="t-dsc"> <td> <div><a href="isless" title="c/numeric/math/isless"> <span class="t-lines"><span>isless</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> checks if the first floating-point argument is less than the second <br> <span class="t-mark">(function macro)</span> </td>
</tr> <tr class="t-dsc"> <td> <div><a href="isgreater" title="c/numeric/math/isgreater"> <span class="t-lines"><span>isgreater</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> checks if the first floating-point argument is greater than the second <br> <span class="t-mark">(function macro)</span> </td>
</tr> <tr class="t-dsc"> <td colspan="2"> <span><a href="https://en.cppreference.com/w/cpp/numeric/math/islessgreater" title="cpp/numeric/math/islessgreater">C++ documentation</a></span> for <code>islessgreater</code> </td>
</tr> </table> <div class="_attribution">
<p class="_attribution-p">
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<a href="https://en.cppreference.com/w/c/numeric/math/islessgreater" class="_attribution-link">https://en.cppreference.com/w/c/numeric/math/islessgreater</a>
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