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LOG2(3)                    Linux Programmer's Manual                   LOG2(3)



NAME
       log2, log2f, log2l - base-2 logarithmic function

SYNOPSIS
       #include <math.h>

       double log2(double x);
       float log2f(float x);
       long double log2l(long double x);

       Link with -lm.

DESCRIPTION
       The log2() function returns the base 2 logarithm of x.

ERRORS
       The log2() function can return the following error:

       EDOM   The argument x is negative.

CONFORMING TO
       SVID  3, POSIX, BSD 4.3, ISO 9899.  The float and the long double vari-
       ants are C99 requirements.

SEE ALSO
       cbrt(3), sqrt(3)



                                  2002-07-27                           LOG2(3)