TANH(3) NetBSD Library Functions Manual TANH(3)

NAME

tanh, tanhfhyperbolic tangent function

LIBRARY

Math Library (libm, -lm)

SYNOPSIS

#include <math.h>

double
tanh(double x);

float
tanhf(float x);

DESCRIPTION

The tanh() and tanhf() functions compute the hyperbolic tangent of x. For a discussion of error due to roundoff, see math(3).

RETURN VALUES

The tanh() function returns the hyperbolic tangent value.

SEE ALSO

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

STANDARDS

The tanh() function conforms to ANSI X3.159-1989 (“ANSI C”).
May 2, 1991 NetBSD 5.99