Query: atanh
OS: opendarwin
Section: 3
Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar
ATANH(3) BSD Library Functions Manual ATANH(3)NAMEatanh -- inverse hyperbolic tangent functionSYNOPSIS#include <math.h> double atanh(double x);DESCRIPTIONThe atanh() function computes the inverse hyperbolic tangent of the real argument x.SPECIAL VALUESatanh(+-0) returns +-0. atanh(+-1) returns +-infinity and raises the "divide-by-zero" floating-point exception. atanh(x) returns a NaN and raises the "invalid" floating-point exception for |x| > 1.SEE ALSOacosh(3), asinh(3), exp(3), infnan(3), math(3), matherr(3)STANDARDSThe atanh() function conforms to ISO/IEC 9899:1999(E). 4.3 Berkeley Distribution November 20, 2002 4.3 Berkeley Distribution
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