erfc(3) Library Functions Manual erfc(3) erfc, erfcf, erfcl - LIBRARY Math library (libm, -lm) #include double erfc(double x); float erfcf(float x); long double erfcl(long double x); glibc (. feature_test_macros(7)): erfc(): _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE || /* Since glibc 2.19: */ _DEFAULT_SOURCE || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE erfcf(), erfcl(): _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L || /* glibc 2.19: */ _DEFAULT_SOURCE || /* Glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE x, 1.0 - erf(x). x, [0,2]. x NaN, NaN. x +0 -0, -1. x , +0. x , +2. , , 0.0. , (.. ), . math_error(7), , . : : ( ) (FE_UNDERFLOW). errno. attributes(7). +----------------------------+----------------------------------------------------------+--------------------------+ | | | | +----------------------------+----------------------------------------------------------+--------------------------+ |erfc(), erfcf(), erfcl() | | MT-Safe | +----------------------------+----------------------------------------------------------+--------------------------+ C11, POSIX.1-2008. C99, POSIX.1-2001. , double, SVr4, 4.3BSD. erfc(), erfcf() erfcl() , 1-erf(x) x ( erf(x) 1). . cerf(3), erf(3), exp(3) Azamat Hackimov , Yuri Kozlov ; GNU 3 , . . , , . Linux man-pages 6.06 31 2023 . erfc(3)