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 variants are C99 requirements.

SEE ALSO
       sqrt(3), cbrt(3)



                           2002-07-27                    EXP(3)
