lrint
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Name

lrint, lrintf, lrintl, llrint, llrintf, llrintl — round to nearest integer

Synopsis

#include <math.h>
long int lrint( double   x);
long int lrintf( float   x);
long int lrintl( long double   x);
long long int llrint( double   x);
long long int llrintf( float   x);
long long int llrintl( long double   x);
[Note] Note
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
All functions shown above: _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE;
or cc -std=c99
[Note] Note

Link with −lm.

DESCRIPTION

These functions round their argument to the nearest integer value, using the current rounding direction. If x is infinite or NaN, or if the rounded value is outside the range of the return type, the numeric result is unspecified. A domain error may occur if the magnitude of x is too large.

RETURN VALUE

The rounded integer value.

ERRORS

EDOM

The magnitude of x is too large and (math_errhandling & MATH_ERRNO) is nonzero.

CONFORMING TO

C99.

SEE ALSO

ceil(3), floor(3), lround(3), nearbyint(3), rint(3), round(3)

COLOPHON

This page is part of release 2.79 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.

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