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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. #define SIZE 1000
  5.  
  6. void transpose(float **a, const int N) {
  7. 	int tmp;
  8.     for (int i = 0; i < N; i++) {
  9.     	for (int j = 0; j < i; j++) {
  10. 	        tmp = a[i][j];
  11. 	        a[i][j] = a[j][i];
  12. 	        a[j][i] = tmp;
  13.     	}
  14.     }
  15. }
  16.  
  17. int main(void) {
  18. 	float** src = new float*[SIZE];
  19. 	for (int i = 0; i < SIZE; i++) {
  20. 		src[i] = new float[SIZE];
  21. 	}
  22. 	for (int i = 0; i < SIZE; i ++) {
  23. 		for (int j = 0; j < SIZE; j++) {
  24. 			src[i][j] = i + j;
  25. 		}
  26. 	}
  27.  
  28. 	printf("Start\n");
  29. 	for (int i = 0; i < 510; i++) {
  30. 		transpose(src, SIZE);
  31. 	}
  32. 	printf("Finish\n");
  33.  
  34. 	return 0;
  35. }
  36.  
Success #stdin #stdout 4.97s 7056KB
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https://ideone.com/6X5U0p
language:
C++ (gcc 8.3)
created:
8 years ago
visibility:
public

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