/* nag_arccosh (s11acc) Example Program.
 *
 * Copyright 1989 Numerical Algorithms Group.
 *
 * Mark 2 revised, 1992.
 */

#include <nag.h>
#include <stdio.h>
#include <nag_stdlib.h>
#include <nags.h>

int main(void)
{
  double  x, y;

  /* Skip heading in data file */
  Vscanf("%*[^\n]");
  Vprintf("nag_arccosh (s11acc) Example Program Results\n");
  Vprintf("     x           y\n");
  while (scanf("%lf", &x) != EOF)
    {
      /* nag_arccosh (s11acc).
       * Inverse hyperbolic cosine, arccosh x
       */
      y = nag_arccosh(x, NAGERR_DEFAULT);
      Vprintf("%12.3e%12.3e\n", x, y);
    }
  return EXIT_SUCCESS;
}