Manual Section... (3) - page: lround
NAMElround, lroundf, lroundl, llround, llroundf, llroundl - round to nearest integer, away from zero
#include <math.h> long int lround(double x);
long int lroundf(float x);
long int lroundl(long double x); long long int llround(double x);
long long int llroundf(float x);
long long int llroundl(long double x);
Link with -lm.
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
DESCRIPTIONThese functions round their argument to the nearest integer value, rounding away from zero, regardless of the current rounding direction (see fenv(3)).
RETURN VALUEThese functions return the rounded integer value.
ERRORSSee math_error(7) for information on how to determine whether an error has occurred when calling these functions.
The following errors can occur:
- Domain error: x is a NaN or infinite, or the rounded value is too large
- An invalid floating-point exception (FE_INVALID) is raised.
VERSIONSThese functions first appeared in glibc in version 2.1.
CONFORMING TOC99, POSIX.1-2001.
SEE ALSOceil(3), floor(3), lrint(3), nearbyint(3), rint(3), round(3)
COLOPHONThis page is part of release 3.24 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/.
This document was created by man2html, using the manual pages.
Time: 15:26:44 GMT, June 11, 2010