xfree86 man page for log10

Query: log10

OS: xfree86

Section: 3

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

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(): _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L || /* Since glibc 2.19: */ _DEFAULT_SOURCE || /* Glibc versions <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE 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 4.15 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 LOG10(3)
Related Man Pages
logl(3) - linux
log10l(3m) - opensolaris
sqrt(3) - plan9
sqrt(3) - v7
sqrt(3) - minix
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