Rechercher une page de manuel
log10
Langue: en
Version: 2008-08-05 (fedora - 05/07/09)
Section: 3 (Bibliothèques de fonctions)
NAME
log10, log10f, log10l - base-10 logarithmic functionSYNOPSIS
#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; 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), sqrt(3)COLOPHON
This page is part of release 3.19 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/.Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre