Copyright (C) 2001 Andries Brouwer <firstname.lastname@example.org>. %%%LICENSE_START(VERBATIM) Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Since the ...
NAMEtrunc, truncf, truncl - round to integer, toward zero
#include <math.h> double trunc(double x);
float truncf(float x);
long double truncl(long double x);
Link with -lm.
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
trunc(), truncf(), truncl():
_XOPEN_SOURCE >= 600 || _ISOC99_SOURCE ||
_POSIX_C_SOURCE >= 200112L;
or cc -std=c99
DESCRIPTIONThese functions round x to the nearest integer not larger in absolute value.
RETURN VALUEThese functions return the rounded integer value.
If x is integral, infinite, or NaN, x itself is returned.
ERRORSNo errors occur.
VERSIONSThese functions first appeared in glibc in version 2.1.
ATTRIBUTESFor an explanation of the terms used in this section, see attributes(7).
|trunc(), truncf(), truncl()||Thread safety||MT-Safe|