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EXP2(3) Linux Programmer's Manual EXP2(3)NAMEexp2, exp2f, exp2l - base-2 exponential functionSYNOPSIS#include<math.h>doubleexp2(doublex);floatexp2f(floatx);longdoubleexp2l(longdoublex);Link with-lm. Feature Test Macro Requirements for glibc (see feature_test_macros(7)):exp2(),exp2f(),exp2l(): _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE; orcc-std=c99DESCRIPTIONTheexp2() function returns the value of 2 raised to the power ofx.RETURNVALUEOn success, these functions return the base-2 exponential value ofx. For various special cases, including the handling of infinity and NaN, as well as overflows and underflows, see exp(3).ERRORSSee math_error(7) for information on how to determine whether an error has occurred when calling these func- tions. For a discussion of the errors that can occur for these functions, see exp(3).VERSIONSThese functions first appeared in glibc in version 2.1.CONFORMINGTOC99, POSIX.1-2001. The variant returningdoublealso conforms to SVr4, 4.3BSD, C89.SEEALSOcbrt(3), cexp2(3), exp(3), exp10(3), sqrt(3)COLOPHONThis page is part of release 3.22 of the Linuxman-pagesproject. A description of the project, and informa- tion about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. 2008-08-11 EXP2(3)