|FDIM(3)||Linux Programmer's Manual||FDIM(3)|
NAMEfdim, fdimf, fdiml - positive difference
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
_XOPEN_SOURCE >= 600 || _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L;or cc -std=c99
DESCRIPTIONThese functions return the positive difference, max( x- y,0), between their arguments.
RETURN VALUEOn success, these functions return the positive difference.
ERRORSSee math_error(7) 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 ( FE_OVERFLOW) is raised.
These functions do not set errno.
VERSIONSThese functions first appeared in glibc in version 2.1.
Multithreading (see pthreads(7))The fdim(), fdimf(), and fdiml() functions are thread-safe.
CONFORMING TOC99, POSIX.1-2001.
COLOPHONThis page is part of release 3.53 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.