logl

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



NAME
       log, logf, logl - natural logarithmic function

SYNOPSIS
       #include <math.h>

       double log(double x);

       float logf(float x);

       long double logl(long double x);

DESCRIPTION
       The log() function returns the natural logarithm of x.

ERRORS
       The log() 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 (minus
	      infinity).

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)