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atanh
Langue: en
Version: 2002-07-27 (fedora - 16/08/07)
Section: 3 (Bibliothèques de fonctions)
NAME
atanh, atanhf, atanhl - inverse hyperbolic tangent functionSYNOPSIS
#include <math.h> double atanh(double x);Link with -lm.
float atanhf(float x);
long double atanhl(long double x);
DESCRIPTION
The atanh() function calculates the inverse hyperbolic tangent of x; that is the value whose hyperbolic tangent is x. If the absolute value of x is greater than 1.0, atanh() returns not-a-number (NaN) and errno is set.ERRORS
- EDOM
- x is out of range.
CONFORMING TO
SVr4, POSIX.1-2001, 4.3BSD, C89. The float and long double variants are C99 requirements.SEE ALSO
acosh(3), asinh(3), catanh(3), cosh(3), sinh(3), tanh(3)Contenus ©2006-2024 Benjamin Poulain
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