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FDIM(3) | Linux Programmer's Manual | FDIM(3) |
NAME¶
fdim, fdimf, fdiml - positive differenceSYNOPSIS¶
#include <math.h> double fdim(double x, double y);Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
fdimf(), fdiml():
_ISOC99_SOURCE ||
_POSIX_C_SOURCE >= 200112L
DESCRIPTION¶
These functions return the positive difference, max( x-y,0), between their arguments.RETURN VALUE¶
On success, these functions return the positive difference. If x or y is a NaN, a NaN is returned. If the result overflows, a range error occurs, and the functions return HUGE_VAL, HUGE_VALF, or HUGE_VALL, respectively.ERRORS¶
See 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.
VERSIONS¶
These functions first appeared in glibc in version 2.1.ATTRIBUTES¶
For an explanation of the terms used in this section, see attributes(7).Interface | Attribute | Value |
fdim (), fdimf (), fdiml () | Thread safety | MT-Safe |
CONFORMING TO¶
C99, POSIX.1-2001, POSIX.1-2008.SEE ALSO¶
fmax(3)COLOPHON¶
This page is part of release 4.10 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.2016-03-15 |