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rint, lrint, llrint

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< c‎ | numeric‎ | math
Revision as of 16:33, 3 January 2014 by Nate (Talk | contribs)

 
 
 
Common mathematical functions
Functions
Basic operations
(C99)
(C99)
(C99)
(C99)
(C99)
(C99)(C99)(C99)
Exponential functions
(C99)
(C99)
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Power functions
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Trigonometric and hyperbolic functions
(C99)
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Error and gamma functions
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Nearest integer floating point operations
(C99)(C99)(C99)
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rintlrintllrint
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Floating point manipulation functions
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Classification
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Macro constants
 
Defined in header <math.h>
float rintf( float arg );
(since C99)
double rint( double arg );
(since C99)
long double rintl( long double arg );
(since C99)
long lrintf( float arg );
(since C99)
long lrint( double arg );
(since C99)
long lrintl( long double arg );
(since C99)
long long llrintf( float arg );
(since C99)
long long llrint( double arg );
(since C99)
long long llrintl( long double arg );
(since C99)

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

rounds to an integer using current rounding mode
(function) [edit]
(C99)(C99)(C99)
rounds to nearest integer not greater in magnitude than the given value
(function) [edit]