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fdim (3)
  • fdim (3) ( Solaris man: Библиотечные вызовы )
  • fdim (3) ( FreeBSD man: Библиотечные вызовы )
  • fdim (3) ( Русские man: Библиотечные вызовы )
  • >> fdim (3) ( Linux man: Библиотечные вызовы )
  • fdim (3) ( POSIX man: Библиотечные вызовы )
  •  

    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(): _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE; or cc -std=c99  

    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.  

    CONFORMING TO

    C99, POSIX.1-2001.  

    SEE ALSO

    fmax(3)  

    COLOPHON

    This page is part of release 3.14 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/.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUE
    ERRORS
    VERSIONS
    CONFORMING TO
    SEE ALSO
    COLOPHON


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