HP-UX Reference (11i v1 00/12) - 3 Library Functions A-M (vol 6)

__________________________________________________________________________________________________________________________________________________________________________________________________
__________________________________________________________________________________________________________________________________________________________________________________________________
STANDARD Printed by: Nora Chuang [nchuang] STANDARD
/build/1111/BRICK/man3/!!!intro.3c
________________________________________________________________
___ ___
f
fdim(3M) fdim(3M)
NAME
fdim() - positive difference function
SYNOPSIS
#include <math.h>
double fdim(double x, double y);
DESCRIPTION
The fdim() function determines the positive difference between its arguments.
The ISO/ANSI C committee has approved the fdim() 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 fdim() function returns the positive difference between x and y.
If x > y, fdim() returns x -
y.
If x
<= y, fdim() returns +zero.
If x or y is NaN, fdim() returns the same NaN.
If both arguments are NaNs, fdim() returns one of the arguments.
If the correct value would overflow, fdim() returns +INFINITY.
ERRORS
No errors are defined.
SEE ALSO
fmax(3M), fmin(3M), math(5).
Section 3−−218 − 1 − HP-UX Release 11i: December 2000
___
___