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  1. #include <stdio.h>
  2.  
  3. // matrix multiply float?
  4. void matmulf(double *y , double A[][2], double *x)
  5. {
  6. 	y[0] = A[0][0] * x[0] + A[0][1] * x[1];
  7. 	y[1] = A[1][0] * x[0] + A[1][1] * x[1];
  8. }
  9.  
  10. int main()
  11. {
  12. 	double A[][2] = {
  13. 		{1,0},
  14. 		{0,1},
  15. 	};
  16. 	double x[] = {10,20};
  17. 	double y[2];
  18.  
  19. 	matmulf(y, A, x);
  20. 	printf("y=(%f,%f)\n", y[0], y[1]);
  21. 	return 0;
  22. }
  23.  
Success #stdin #stdout 0.01s 1720KB
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stdin
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Standard input is empty
stdout
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y=(10.000000,20.000000)
https://ideone.com/IvMzJ
language:
C (gcc 8.3)
created:
12 years ago
visibility:
public

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