HP-UX Reference (11i v1 00/12) - 3 Library Functions N-Z (vol 7)

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STANDARD Printed by: Nora Chuang [nchuang] STANDARD
/build/1111/BRICK/man3/nan.3m
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r
round(3M) round(3M)
NAME
round() - round function
SYNOPSIS
#include <math.h>
double round(double x);
DESCRIPTION
round() rounds its argument to the nearest integral value in floating-point format. An argument exactly
halfway between two integers is rounded away from zero, regardless of the current rounding direction.
Rounding away from zero also applies to the functions, lroundand llround.
The ISO/ANSI C committee has approved the round() function for inclusion in the C9X draft standard.
To use this function, compile either with the default -Ae option or with the -Aa and -D_HPUX_SOURCE
options. Make sure your program includes <math.h>. Link in the math library by specifying -lm on the
compiler or linker command line.
RETURN VALUE
The round() function returns the rounded integral value.
ERRORS
No errors are defined.
SEE ALSO
ceil(3M), floor(3M), fabs(3M), fmod(3M), fegetround(3M), fesetround(3M), lrint(3M), llrint(3M), lround(3M),
llround(3M), rint(3M), trunc(3M), math(5), fenv(5).
Section 3−−780 − 1 − HP-UX Release 11i: December 2000
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