Question

How to use fma() function to calculate (x * y) + z in C

Answer 1

#include <stdio.h>     
#include <math.h>
 
int main(int argc, char **argv)
{
	double x, y, z;
  
	x = 10.0, y = 20.0, z = 30.0;
	
	// x * y + z --- (x * y) + z
	printf ("fma(10.0, 20.0, 30.0) = %.1f\n", fma(x, y, z));
	printf ("fma(0.1, 10, -1) = %.1f\n", fma(0.1, 10, -1));
	
    return 0;
}

/*
run:
  
fma(10.0, 20.0, 30.0) = 230.0
fma(0.1, 10, -1) = 0.0

*/

 

70+ SQL courses for beginners and professionals