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


NAME
       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, cbrt,Russian Peasent Multiplication and Exponentiation

GNU                       June 16, 1993                         1

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