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tanh, tanhf, tanhl - hyperbolic tangent
function
#include <math.h>
double tanh(double x);
float tanhf(float x);
long double tanhl(long double x);
The tanh() function returns
the hyperbolic tangent of x, which is defined mathematically as sinh(x)
/ cosh(x).
SVID 3, POSIX, BSD 4.3, ISO 9899 (C99). The float
and the long double variants are C99 requirements.
acosh(3)
, asinh(3)
,
atanh(3)
, cosh(3)
, sinh(3)
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