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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