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| <h3 class="section">1.38 <code>lrint</code>, <code>lrintf</code>, <code>llrint</code>, <code>llrintf</code>–round to integer</h3> |
| |
| <p><a name="index-lrint-108"></a><a name="index-lrintf-109"></a><a name="index-llrint-110"></a><a name="index-llrintf-111"></a><strong>Synopsis</strong> |
| <pre class="example"> #include <math.h> |
| long int lrint(double <var>x</var>); |
| long int lrintf(float <var>x</var>); |
| long long int llrint(double <var>x</var>); |
| long long int llrintf(float <var>x</var>); |
| |
| </pre> |
| <p><strong>Description</strong><br> |
| The <code>lrint</code> and <code>llrint</code> functions round their argument to the nearest |
| integer value, using the current rounding direction. If the rounded value is |
| outside the range of the return type, the numeric result is unspecified. A |
| range error may occur if the magnitude of <var>x</var> is too large. |
| The "inexact" floating-point exception is raised in implementations that |
| support it when the result differs in value from the argument (i.e., when |
| a fraction actually has been truncated). |
| |
| <p><br> |
| <strong>Returns</strong><br> |
| <var>x</var> rounded to an integral value, using the current rounding direction. |
| |
| <p><br> |
| <strong>See Also</strong><br> |
| <code>lround</code> |
| |
| <p><br> |
| <strong>Portability</strong><br> |
| ANSI C, POSIX |
| |
| <p><br> |
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