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| <h3 class="section">1.48 <code>rint</code>, <code>rintf</code>–round to integer</h3> |
| |
| <p><a name="index-rint-131"></a><a name="index-rintf-132"></a><strong>Synopsis</strong> |
| <pre class="example"> #include <math.h> |
| double rint(double <var>x</var>); |
| float rintf(float <var>x</var>); |
| |
| </pre> |
| <p><strong>Description</strong><br> |
| The <code>rint</code> functions round their argument to an integer value in |
| floating-point format, using the current rounding direction. They |
| raise the "inexact" floating-point exception if the result differs |
| in value from the argument. See the <code>nearbyint</code> functions for the |
| same function with the "inexact" floating-point exception never being |
| raised. Newlib does not directly support floating-point exceptions. |
| The <code>rint</code> functions are written so that the "inexact" exception is |
| raised in hardware implementations that support it, even though Newlib |
| does not provide access. |
| |
| <p><br> |
| <strong>Returns</strong><br> |
| <var>x</var> rounded to an integral value, using the current rounding direction. |
| |
| <p><br> |
| <strong>Portability</strong><br> |
| ANSI C, POSIX |
| |
| <p><br> |
| <strong>See Also</strong><br> |
| <code>nearbyint</code>, <code>round</code> |
| |
| <p><br> |
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