asinh(3) Library Functions Manual asinh(3) asinh, asinhf, asinhl - (libm -lm) #include double asinh(double x); float asinhf(float x); long double asinhl(long double x); glibc ( feature_test_macros(7)): asinh(): _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 500 || /* glibc 2.19: */ _DEFAULT_SOURCE || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE asinhf(), asinhl(): _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L || /* Since glibc 2.19: */ _DEFAULT_SOURCE || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE x x. x. x (NaN) NaN. x +0 (-0) +0 (-0). x ( ) ( ). . attributes(7). +------------+------------------------------------+--------------------+ || | | +------------+------------------------------------+--------------------+ |asinh(), | | MT-Safe | |asinhf(), | | | |asinhl() | | | +------------+------------------------------------+--------------------+ C11, POSIX.1-2008. C99 POSIX.1-2001. double SVr4 4.3BSD. acosh(3), atanh(3), casinh(3), cosh(3), sinh(3), tanh(3) 3 . . : . 6.18 8 2026 asinh(3)