TANH(3) BSD Library Functions Manual TANH(3)NAMEtanh — hyperbolic tangent function
SYNOPSIS
#include <math.h>
double
tanh(double x);
DESCRIPTION
The tanh() function computes the hyperbolic tangent of x. For a discus‐
sion of error due to roundoff, see math(3).
RETURN VALUES
The tanh() function returns the hyperbolic tangent value.
SEE ALSOacos(3), asin(3), atan(3), atan2(3), cos(3), cosh(3), sin(3), sinh(3),
tan(3), math(3),
STANDARDS
The tanh() function conforms to ANSI X3.159-1989 (“ANSI C89”).
BSD June 4, 1993 BSD