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man:fdiml

FDIM(3) Linux Programmer's Manual FDIM(3)

NAME

     fdim, fdimf, fdiml - positive difference

SYNOPSIS

     #include <math.h>
     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 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.
     These functions do not set errno.

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).
     allbox;  lbw24  lb  lb  l  l  l.   Interface Attribute Value T{ fdim(),
     fdimf(), fdiml() T}   Thread safety  MT-Safe

CONFORMING TO

     C99, POSIX.1-2001, POSIX.1-2008.

SEE ALSO

     fmax(3)

COLOPHON

     This page is part of release 4.16 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/.
                                2017-09-15                           FDIM(3)
/data/webs/external/dokuwiki/data/pages/man/fdiml.txt · Last modified: 2019/05/17 09:47 by 127.0.0.1

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