EXP2(3)

NAME
exp2, exp2f, exp2l - base-2 exponential function

SYNOPSIS
#include <math.h>

double exp2(double x);
float exp2f(float x);
long double exp2l(long double x);

Link with -lm.

Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

exp2(), exp2f(), exp2l(): _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE; or cc -std=c99

DESCRIPTION
The exp2() function returns the value of 2 raised to the power of x.

CONFORMING TO
SVr4, POSIX.1-2001, 4.3BSD, C89. The float and long double variants are C99 requirements.

SEE ALSO
cbrt(3), cexp2(3), exp(3), exp10(3), sqrt(3)

COLOPHON
This page is part of release 2.70 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.