Table of Contentstanh - hyperbolic tangent function #include <math.h>
double tanh(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 acosh(3), asinh(3), atanh(3), cosh(3), sinh(3)
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