log2l

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EXP(3)			  Linux Programmer’s Manual		       EXP(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);

DESCRIPTION
       The log2() function returns the natural 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
       sqrt(3), cbrt(3)



				  2002-07-27			       EXP(3)