TANH(3) BSD Library Functions Manual TANH(3)NAME
tanh, tanhf — hyperbolic 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 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 C89”).
BSD May 2, 1991 BSD