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);
[Note] Note

Link with −lm.

DESCRIPTION

The log10() function returns the base 10 logarithm of x.

ERRORS

The log10() function can return the following errors:

EDOM

The argument x is negative.

ERANGE

The argument x is zero. The log of zero is not defined.

CONFORMING TO

SVr4, 4.3BSD, C89. The float and long double variants are C99 requirements.

SEE ALSO

cbrt(3), clog10(3), sqrt(3)

COLOPHON

This page is part of release 2.79 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/.


  Copyright 1993 David Metcalfe (davidprism.demon.co.uk)

Permission is granted to make and distribute verbatim copies of this
manual provided the copyright notice and this permission notice are
preserved on all copies.

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manual under the conditions for verbatim copying, provided that the
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Since the Linux kernel and libraries are constantly changing, this
manual page may be incorrect or out-of-date.  The author(s) assume no
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Formatted or processed versions of this manual, if unaccompanied by
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References consulted:
    Linux libc source code
    Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991)
    386BSD man pages
Modified 1993-07-24 by Rik Faith (faithcs.unc.edu)
Modified 1995-08-14 by Arnt Gulbrandsen <agulbratroll.no>
Modified 2002-07-27 by Walter Harms
(walter.harmsinformatik.uni-oldenburg.de)