DragonFly On-Line Manual Pages

TANH(3)               DragonFly Library Functions Manual               TANH(3)

NAME
     tanh, tanhf, tanhl -- hyperbolic tangent functions

SYNOPSIS
     #include <math.h>

     double
     tanh(double x);

     float
     tanhf(float x);

     long double
     tanhl(long double x);

DESCRIPTION
     The tanh() function computes the hyperbolic tangent of x.  The tanhf()
     function is a single precision version of tanh().  The tanhl() function
     is an extended precision version of tanh().

RETURN VALUES
     The tanh() tanhf(), and tanhl() functions return the hyperbolic tangent
     value.

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

STANDARDS
     The tanh() function conforms to ANSI X3.159-1989 (``ANSI C89'').

HISTORY
     The tanh() function first appeared in Version 7 AT&T UNIX.

DragonFly 4.1                    July 17, 2013                   DragonFly 4.1