NAME    [Toc]    [Back]

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

SYNOPSIS    [Toc]    [Back]

       #include <math.h>

       double exp(double x);

       double log(double x);

       double log10(double x);

       double pow(double x, double y);

DESCRIPTION    [Toc]    [Back]

       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    [Toc]    [Back]

       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    [Toc]    [Back]

       SVID 3, POSIX, BSD 4.3, ISO 9899

SEE ALSO    [Toc]    [Back]

       sqrt(3), cbrt(3)



GNU				  1993-06-16				EXP(3)