Power-Programmierung/CD2.mdf/gnu/djgpp/libsrc/m/src/cosh.c

C/C++ Source or Header | 1992-09-20 | 122 b | 8 lines

#include <math.h>

double cosh(double x)
{
  const double ebig = exp(fabs(x));
  return (ebig + 1.0/ebig) / 2.0;
}