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rint, lrint, llrint

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Common mathematical functions
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Macro constants
 

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Defined in header <math.h>
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<td >
int rintf( float arg );
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<td class="t-dcl-nopad"> </td> <td > (since C99) </td> </tr> <tr class="t-dcl ">

<td >
int rint( double arg );
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int rintl( long double arg );
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<td >
long lrintf( float arg );
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<td >
long lrint( double arg );
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<td >
long lrintl( long double arg );
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<td class="t-dcl-nopad"> </td> <td > (since C99) </td> </tr> <tr class="t-dcl ">

<td >
long long llrintf( float arg );
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<td >
long long llrint( double arg );
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<td class="t-dcl-nopad"> </td> <td > (since C99) </td> </tr> <tr class="t-dcl ">

<td >
long long llrintl( long double arg );
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<td class="t-dcl-nopad"> </td> <td > (since C99) </td> </tr> Template:ddcl list end

Rounds the floating-point argument arg to an integer value in floating-point format, using the current rounding mode. If the result differs from arg (i.e., arg was not an integer value already), the floating-point exception FE_INEXACT is raised.

Contents

Parameters

arg - floating point value

Return value

The integer result of rounding arg

Notes

The only difference between nearbyint and rint is that rint may raise the FE_INEXACT floating-point exception, while nearbyint never raises it.

Example

See also

Template:c/numeric/math/dcl list nearbyintTemplate:c/numeric/math/dcl list trunc