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TANH(3) Library Functions Manual TANH(3)

tanh, tanhf, tanhlhyperbolic tangent functions

#include <math.h>

tanh(double x);

tanhf(float x);

long double
tanhl(long double x);

The tanh() function computes the hyperbolic tangent of x. The tanhf() function is a single precision version of tanh(). The tanhl() function is an extended precision version of tanh().

The tanh() tanhf(), and tanhl() functions return the hyperbolic tangent value.

acos(3), asin(3), atan(3), atan2(3), cos(3), cosh(3), sin(3), sinh(3), tan(3)

The tanh() function conforms to ANSI X3.159-1989 (“ANSI C89”).

The tanh() function first appeared in Version 7 AT&T UNIX.

July 17, 2013 OpenBSD-current