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EXP2(3) | Linux Programmer's Manual | EXP2(3) |
NAME¶
exp2, exp2f, exp2l - base-2 exponential functionSYNOPSIS¶
#include <math.h>double exp2(double x);float exp2f(float x);long double exp2l(long double x);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
_XOPEN_SOURCE >= 600 ||
_ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L;
or cc -std=c99
DESCRIPTION¶
The exp2() function returns the value of 2 raised to the power of x.RETURN VALUE¶
On success, these functions return the base-2 exponential value of x.ERRORS¶
See math_error(7) for information on how to determine whether an error has occurred when calling these functions.VERSIONS¶
These functions first appeared in glibc in version 2.1.CONFORMING TO¶
C99, POSIX.1-2001. The variant returning double also conforms to SVr4, 4.3BSD, C89.SEE ALSO¶
cbrt(3), cexp2(3), exp(3), exp10(3), sqrt(3)COLOPHON¶
This page is part of release 3.44 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/.2010-09-20 |