EXP2(3) NEWLIB EXP2(3)NAME
1.16 `exp2', `exp2f'-exponential, base 2
SYNOPSIS
#include <math.h>
double exp2(double X);
float exp2f(float X);
DESCRIPTION
`exp2' and `exp2f' calculate 2 ^ X, that is, 2 raised to the power X.
You can use the (non-ANSI) function `matherr' to specify error han‐
dling for these functions.
RETURNS
On success, `exp2' and `exp2f' 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
ANSI C, POSIX.
SEE ALSO
exp2 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.
NEWLIB April 2010 EXP2(3)
