exp,  log, log10, pow - exponential, logarithmic and power
       functions


SYNOPSIS

       #include <math.h>

       double exp(double x);

       double log(double x);

       double log10(double x);

       double pow(double x, double y);


DESCRIPTION

       The exp() function returns the value of  e  (the  base  of
       natural logarithms) raised to the power of x.

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

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

       The  pow()  function  returns the value of x raised to the
       power of y.


ERRORS

       The log() and log10() functions can return  the  following
       errors:

       EDOM   The argument x is negative.

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

       The pow() function can return the following error:

       EDOM   The argument x is negative and y is not an integral
              value.  This would result in a complex number.


CONFORMING TO

       SVID 3, POSIX, BSD 4.3, ISO 9899


SEE ALSO

       sqrt(3), cbrt(3)