TANH(3) OpenBSD Programmer's Manual TANH(3)NAME
tanh, tanhf - hyperbolic tangent functions
SYNOPSIS
#include <math.h>
double
tanh(double x);
float
tanhf(float x);
DESCRIPTION
The tanh() function computes the hyperbolic tangent of x. The tanhf()
function is a single precision version of tanh(). For a discussion of
error due to roundoff, see math(3).
RETURN VALUES
The tanh() and tanhf() functions return the hyperbolic tangent value.
SEE ALSOacos(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'').
OpenBSD 4.9 May 31, 2007 OpenBSD 4.9