Manpage of LOG10

LOG10

Section: Linux Programmer's Manual (3)
Updated: 2016-03-15
Index
 

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 xis 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).
InterfaceAttributeValue
log10(), log10f(), log10l() Thread safetyMT-Safe
 

CONFORMING TO

C99, POSIX.1-2001, POSIX.1-2008.

The variant returning doublealso conforms to SVr4, 4.3BSD, C89.  

SEE ALSO

cbrt(3), clog10(3), exp10(3), log(3), log2(3), sqrt(3)


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
ATTRIBUTES
CONFORMING TO
SEE ALSO

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