Section: Linux Programmer's Manual (3) Updated: 2010-09-20 Local index
fdim, fdimf, fdiml - positive difference
double fdim(double x, double y);
float fdimf(float x, float y);
long double fdiml(long double x, long double y);
Link with -lm.
Feature Test Macro Requirements for glibc (see
_XOPEN_SOURCE >= 600 || _ISOC99_SOURCE ||
_POSIX_C_SOURCE >= 200112L;
These functions return the positive difference, max(x-y,0),
between their arguments.
On success, these functions return the positive difference.
is a NaN, a NaN is returned.
If the result overflows,
a range error occurs,
and the functions return
for information on how to determine whether an error has occurred
when calling these functions.
The following errors can occur:
- Range error: result overflow
An overflow floating-point exception
These functions do not set
These functions first appeared in glibc in version 2.1.
This page is part of release 3.27 of the Linux
A description of the project,
and information about reporting bugs,
can be found at
- RETURN VALUE
- CONFORMING TO
- SEE ALSO
This document was created by
using the manual pages.
Time: 21:46:02 GMT, April 16, 2011