tanh(3) - NetBSD Manual Pages

TANH(3)                   NetBSD Programmer's 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 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'').

NetBSD 1.6                        May 2, 1991                                1