tanh.c File Reference

#include <math.h>

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Functions
double	tanh (double x)

Function Documentation

tanh()

double tanh

(

double

x

)

Definition at line 12 of file tanh.c.

{
  if (x > 50)
    return 1;
  else if (x < -50)
    return -1;
  else
  {
    const double ebig = exp(x);
    const double esmall = 1.0/ebig;
    return (ebig - esmall) / (ebig + esmall);
  }
}

Referenced by _CItanh(), MSVCRT_tanh(), rpn_tanh(), tanhf(), tanhl(), test_math_functions(), and ValarrayTest::transcendentals().