Section: Linux Programmer's Manual (3) Updated: 2010-09-20 Local index
log10, log10f, log10l - base-10 logarithmic function
double log10(double x);
float log10f(float x);
long double log10l(long double x);
Link with -lm.
Feature Test Macro Requirements for glibc (see
_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE ||
_POSIX_C_SOURCE >= 200112L;
function returns the base 10 logarithm of x.
On success, these functions return the base 10 logarithm of
For special cases, including where
is 0, 1, negative, infinity, or NaN, see
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
The variant returning
also conforms to
SVr4, 4.3BSD, C89.
This page is part of release 3.27 of the Linux
A description of the project,
and information about reporting bugs,
can be found at
- RETURN VALUE
- CONFORMING TO
- SEE ALSO
This document was created by
using the manual pages.
Time: 21:49:36 GMT, April 16, 2011