NAG Library Manual, Mark 28.4
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NAG CL Interface Introduction
Example description
/* nag_specfun_tanh (s10aac) Example Program.
 *
 * Copyright 2022 Numerical Algorithms Group.
 *
 * Mark 28.4, 2022.
 */

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

int main(void) {
  Integer exit_status = 0;
  double x, y;

  /* Skip heading in data file */
  scanf("%*[^\n]");
  printf("nag_specfun_tanh (s10aac) Example Program Results\n");
  printf("           x       y\n");
  while (scanf("%lf", &x) != EOF)
  {
    /* nag_specfun_tanh (s10aac).
     * Hyperbolic tangent, tanh x
     */
    y = nag_specfun_tanh(x);
    printf("%12.1f%12.5f\n", x, y);
  }

  return exit_status;
}