Minix Man Pages
home | helpACOSH(3) BSD Library Functions Manual ACOSH(3) NAME acosh, acoshf, acoshl -- inverse hyperbolic cosine function LIBRARY Math Library (libm, -lm) SYNOPSIS #include <math.h> double acosh(double x); float acoshf(float x); long double acoshl(long double x); DESCRIPTION The acosh(), acoshf(), and acoshl() functions compute the inverse hyperbolic cosine of the real argument x. RETURN VALUES If x is less than one, acosh(x), acoshf(x), and acoshl(x) return NaN and set the global variable errno to EDOM. SEE ALSO asinh(3), atanh(3), exp(3), math(3) HISTORY The acosh() function appeared in 4.3BSD. STANDARDS The acosh() function conforms to ISO/IEC 9899:1999 ("ISO C99"). BSD January 29, 2013 BSD
NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | SEE ALSO | HISTORY | STANDARDS