1TANH(3)                    Linux Programmer's Manual                   TANH(3)
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NAME

6       tanh, tanhf, tanhl - hyperbolic tangent function
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SYNOPSIS

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

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

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

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