DragonFly On-Line Manual Pages


LRINT(3)	      DragonFly Library Functions Manual	      LRINT(3)

NAME

llrint, llrintf, llrintl, lrint, lrintf, lrintl -- convert to integer

LIBRARY

Math Library (libm, -lm)

SYNOPSIS

#include <math.h> long long llrint(double x); long long llrintf(float x); long long llrintl(long double x); long lrint(double x); long lrintf(float x); long lrintl(long double x);

DESCRIPTION

The lrint() function returns the integer nearest to its argument x according to the current rounding mode. If the rounded result is too large to be represented as a long value, an invalid exception is raised and the return value is undefined. Otherwise, if x is not an integer, lrint() raises an inexact exception. When the rounded result is repre- sentable as a long, the expression lrint(x) is equivalent to (long)rint(x) (although the former may be more efficient). The llrint(), llrintf(), llrintl(), lrintf(), and lrintl() functions dif- fer from lrint() only in their input and output types.

SEE ALSO

lround(3), math(3), rint(3), round(3)

STANDARDS

These functions conform to ISO/IEC 9899:1999 (``ISO C99'').

HISTORY

The llrint(), llrintf(), lrint(), and lrintf() routines first appeared in DragonFly 1.3. The long double variants were introduced in DragonFly 2.13. DragonFly 4.1 December 21, 2011 DragonFly 4.1