TANH (3)
hyperbolic tangent function
SYNOPSIS
#include <math.h>
double tanh(double x );
DESCRIPTION
The tanh() function returns the hyperbolic tangent of x, which
is defined mathematically as sinh(x) / cosh(x).
CONFORMING TO
SVID 3, POSIX, BSD 4.3, ISO 9899
SEE ALSO
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