exp2(3) Library Functions Manual exp2(3) exp2, exp2f, exp2l - 2 (libm -lm) #include double exp2(double x); float exp2f(float x); long double exp2l(long double x); glibc ( feature_test_macros(7)): exp2(), exp2f(), exp2l(): _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L 2 x. 2 x. NaN exp(3). math_error(7) . exp(3). attributes(7). +------------+------------------------------------+--------------------+ || | | +------------+------------------------------------+--------------------+ |exp2(), | | MT-Safe | |exp2f(), | | | |exp2l() | | | +------------+------------------------------------+--------------------+ C11, POSIX.1-2008. glibc 2.1. C99 POSIX.1-2001. double SVr4 4.3BSD. cbrt(3), cexp2(3), exp(3), exp10(3), sqrt(3) 3 . . : . 6.18 8 2026 exp2(3)