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log10f (3)
  • log10f (3) ( FreeBSD man: Библиотечные вызовы )
  • log10f (3) ( Русские man: Библиотечные вызовы )
  • >> log10f (3) ( Linux man: Библиотечные вызовы )
  • log10f (3) ( POSIX man: Библиотечные вызовы )
  •  

    NAME

    log10, log10f, log10l -  base-10 logarithmic function
     
    

    SYNOPSIS

    #include <math.h>
    
    double log10(double x);
    
    float log10f(float x);
    long double log10l(long double x);

    Link with -lm.

    Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

    log10f(), log10l(): _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE; or cc -std=c99  

    DESCRIPTION

    The log10() function returns the base 10 logarithm of x.  

    RETURN VALUE

    On success, these functions return the base 10 logarithm of x.

    For special cases, including where x is 0, 1, negative, infinity, or NaN, see log(3).  

    ERRORS

    See math_error(7) for information on how to determine whether an error has occurred when calling these functions.

    For a discussion of the errors that can occur for these functions, see log(3).  

    CONFORMING TO

    C99, POSIX.1-2001. The variant returning double also conforms to SVr4, 4.3BSD, C89.  

    SEE ALSO

    cbrt(3), clog10(3), exp10(3), sqrt(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
    CONFORMING TO
    SEE ALSO
    COLOPHON


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