trunc(3M) Mathematical Library Functions trunc(3M)
NAME
trunc, truncf, truncl - round to truncated integer value
SYNOPSIS
cc [ flag... ] file... -lm [ library... ]
#include <math.h>
double trunc(double x);
float truncf(float x);
long double truncl(long double x);
DESCRIPTION
These functions round their argument to the integer value, in floating format, nearest to but no larger in magnitude than the argument.
RETURN VALUES
Upon successful completion, these functions return the truncated integer value.
If x is NaN, a NaN is returned.
If x is +-0 or +-Inf, x is returned.
ERRORS
No errors are defined.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
|MT-Level |MT-Safe |
+-----------------------------+-----------------------------+
SEE ALSO
math.h(3HEAD), attributes(5), standards(5)
SunOS 5.10 1 Sep 2002 trunc(3M)
