Интерактивная система просмотра системных руководств (man-ов) log10f (3) log10f ( FreeBSD man: Библиотечные вызовы ) log10f ( Русские man: Библиотечные вызовы ) >> log10f ( Linux man: Библиотечные вызовы ) log10f ( POSIX man: Библиотечные вызовы )
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
log10f (),
log10l ():
_BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE; 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
ERRORS
See
math_error
For a discussion of the errors that can occur for these functions, see
log
CONFORMING TO
C99, POSIX.1-2001.
The variant returning
double
also conforms to
SVr4, 4.3BSD, C89.
SEE ALSO
cbrt clog10 exp10 sqrt
COLOPHON
This page is part of release 3.14 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/.
Index
NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
CONFORMING TO
SEE ALSO
COLOPHON
