PC Extra Super CD 1998 January/PCPLUS131.iso/DJGPP/V2/DJLSR201.ZIP/src/libc/ansi/math/cosh.c

C/C++ Source or Header | 1994-11-29 | 187 b | 9 lines

/* Copyright (C) 1994 DJ Delorie, see COPYING.DJ for details */
#include <math.h>

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