x SuSE Linux 13.1-RELEASE x
x SuSE Linux 13.1-RELEASEx
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
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 3.69 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
http://www.kernel.org/doc/man-pages/.
2010-09-20 LOG10(3)
Want to link to this manual page? Use this URL:
<http://star2.abcm.com/cgi-bin/bsdi-man?query=LOG10&sektion=3&manpath=>