rint(3M)
NAME
rint − round-to-nearest integral value
SYNOPSIS
cc [ flag ... ] file ... −lm [ library ... ]
#include <math.h>
double rint(double x);
DESCRIPTION
The rint() function returns the integral value (represented as a double) nearest x in the direction of the current IEEE754 rounding mode.
If the current rounding mode rounds toward negative infinity, then rint() is identical to floor(3M). If the current rounding mode rounds toward positive infinity, then rint() is identical to ceil(3M).
RETURN VALUES
Upon successful completion, the rint() function returns the integer (represented as a double precision number) nearest x in the direction of the current IEEE754 rounding mode.
When x is ±Inf, rint() returns x.
If the value of x is NaN, NaN is returned.
ERRORS
No errors will occur.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| MT-Level | MT-Safe |
SEE ALSO
ceil(3M), floor(3M), isnan(3M), attributes(5)
SunOS 5.6 — Last change: 29 Dec 1996