LOG10(3) - man page online | library functions

Base-10 logarithmic function.

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

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 || _POSIX_C_SOURCE >= 200112L; or cc -std=c99
DESCRIPTION These functions return 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).
ATTRIBUTES For an explanation of the terms used in this section, see attributes(7). ┌─────────────────────────────┬───────────────┬─────────┐ │Interface │ Attribute │ Value │ ├─────────────────────────────┼───────────────┼─────────┤ │log10(), log10f(), log10l() │ Thread safety │ MT-Safe │ └─────────────────────────────┴───────────────┴─────────┘
CONFORMING TO C99, POSIX.1-2001, POSIX.1-2008. 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 4.04 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
2015-04-19 LOG10(3)
This manual Reference Other manuals
log10(3) referred by exp10(3) | log(3) | log2(3)
refer to attributes(7) | cbrt(3) | clog10(3) | exp10(3) | feature_test_macros(7) | log(3) | log2(3) | math_error(7) | sqrt(3)