exp2l man page on ElementaryOS

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EXP2(3)			   Linux Programmer's Manual		       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 ||
	   _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.

       For various special cases, including the handling of infinity and  NaN,
       as well as overflows and underflows, see exp(3).

ERRORS
       See  math_error(7) for information on how to determine whether an error
       has occurred when calling these functions.

       For a discussion of the errors that can occur for these functions,  see
       exp(3).

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 3.54 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			       EXP2(3)
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