TRUNC(3M) Mathematical Library Functions TRUNC(3M)

NAME

trunc, truncf, truncl - round to truncated integer value

SYNOPSIS

c99 [ 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(7) for descriptions of the following attributes:


+----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+----------------------------+-----------------------------+
|Interface Stability | Standard |
+----------------------------+-----------------------------+
|MT-Level | MT-Safe |
+----------------------------+-----------------------------+

SEE ALSO

math.h(3HEAD), attributes(7), standards(7)

SunOS 5.11 July 12, 2006 TRUNC(3M)