# log10(3) [debian man page]

LOG10(3) Linux Programmer's Manual LOG10(3)NAME

log10, log10f, log10l - base-10 logarithmic functionSYNOPSIS

#include <math.h> double log10(double x); float log10f(float x); long double log10l(long double x); Link withFeature Test Macro Requirements for glibc (see feature_test_macros(7)): log10f(), log10l(): _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L; or cc-lm.-std=c99DESCRIPTION

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), log(3), log2(3), sqrt(3)COLOPHON

This page is part of release 3.44 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/. 2010-09-20 LOG10(3)

## Check Out this Related Man Page

LOG10(3) Linux Programmer's Manual LOG10(3)NAME

log10, log10f, log10l - base-10 logarithmic functionSYNOPSIS

#include <math.h> double log10(double x); float log10f(float x); long double log10l(long double x); Link withFeature Test Macro Requirements for glibc (see feature_test_macros(7)): log10f(), log10l(): _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L; or cc-lm.-std=c99DESCRIPTION

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), log(3), log2(3), sqrt(3)COLOPHON

This page is part of release 3.27 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/. 2010-09-20 LOG10(3)