1TANH(3)                    Linux Programmer's Manual                   TANH(3)
2
3
4

NAME

6       tanh, tanhf, tanhl - hyperbolic tangent function
7

SYNOPSIS

9       #include <math.h>
10
11       double tanh(double x);
12       float tanhf(float x);
13       long double tanhl(long double x);
14
15       Link with -lm.
16

DESCRIPTION

18       The  tanh()  function  returns  the  hyperbolic  tangent of x, which is
19       defined mathematically as sinh(x) / cosh(x).
20

CONFORMING TO

22       SVr4, 4.3BSD, C89.  The float and long double variants are C99 require‐
23       ments.
24

SEE ALSO

26       acosh(3), asinh(3), atanh(3), cosh(3), ctanh(3), sinh(3)
27
28
29
30                                  2002-07-27                           TANH(3)