a.c

#include <stdio.h>

 int main(int argc, char* argv[])
 {
 	/*shape function gradient copied right out of manual*/
 	double a = -0.04364916731037106478741094406359479762613773345947265625; 
 	double b = 1.3745966692414821608281272347085177898406982421875; 
 	double c1 = 5.0;
 	double d = a*b; 
 	double e = b*a; 

 	printf("(a * constant * b) - (b * constant * a) \n");

 	double k1 = a * c1 * b;
 	double k2 = b * c1 * a;
 	printf("diff = %17.17lg\n", k1-k2); 

 	printf("Here's the kicker:\n (a * b * constant) - (b * a * constant) \n");
 	double k3 = a * b * c1;
 	double k4 = b * a * c1;
 	printf("diff = %15.15lg\n", k3-k4);
 	return 0;

 }