EXP(3)

NAME
1.15 `exp', `expf'--exponential

SYNOPSIS
     #include <math.h>
     double exp(double X);
     float expf(float X);

DESCRIPTION
`exp' and `expf' calculate the exponential of X, that is, e raised to the power X (where e is the base of the natural system of logarithms, approximately 2.71828).
   You can use the (non-ANSI) function `matherr' to specify error handling for these functions.

RETURNS
On success, `exp' and `expf' return the calculated value. If the result underflows, the returned value is `0'. If the result overflows, the returned value is `HUGE_VAL'. In either case, `errno' is set to `ERANGE'.

PORTABILITY
`exp' is ANSI C. `expf' is an extension.

SEE ALSO
exp is part of the library. The full documentation for is maintained as a Texinfo manual. If info and are properly installed at your site, the command

    info

will give you access to the complete manual.