/* ef_c.c  elementary functions in C */
#include <stdio.h>
#include <math.h>

int main(int argc, char *argv[])
{
  double x, y, z; /* any other input numeric type converted to double */
                  /* any other numeric LHS converted from double */

  printf("elementary functions in C from math.h \n");
  x = 0.5; printf("x = %f \n", x);
  z = 0.5; printf("z = %f \n", z);

  y = pow(x, z); printf("pow(x, z) = %f \n", y);
  y = sqrt(x);   printf("sqrt(x) = %f \n", y);
  y = log(x);    printf("log(x) = %f \n", y);
  y = exp(x);    printf("exp(x) = %f \n", y);
  y = sin(x);    printf("sin(x) = %f \n", y);
  y = cos(x);    printf("cos(x) = %f \n", y);
  y = tan(x);    printf("tan(x) = %f \n", y);
  /* y = cot(x); not available  1.0/tan(x) */
  /* y = csc(x); not available  1.0/sin(x) */
  /* y = sec(x); not available  1.0/cos(x) */
  y = asin(x);   printf("asin(x) = %f \n", y);
  y = acos(x);   printf("acos(x) = %f \n", y);
  y = atan(x);   printf("atan(x) = %f \n", y);
  y = atan2(x, z); printf("atan2(x, z) = %f \n", y);
  y = sinh(x);   printf("sinh(x) = %f \n", y);
  y = cosh(x);   printf("cosh(x) = %f \n", y);
  y = tanh(x);   printf("tanh(x) = %f \n", y);
  y = asinh(x);  printf("asinh(x) = %f \n", y);
  y = acosh(x);  printf("acosh(x) = %f \n", y);
  y = atanh(x);  printf("atanh(x) = %f \n", y);
  y = gamma(x);  printf("gamma(x) = %f \n", y);
  printf("end ef_c.c  \n");
  return 0;
}