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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. #define SIZE 1000
  5.  
  6. void transpose(float *src, float *dst, const int N, const int M) {
  7.     for(int n = 0; n<N*M; n++) {
  8.         int i = n/N;
  9.         int j = n%N;
  10.         dst[n] = src[M*j + i];
  11.     }
  12. }
  13.  
  14. int main(void) {
  15. 	float* src = new float[SIZE * SIZE];
  16. 	float* dst = new float[SIZE * SIZE];
  17. 	for (int i = 0; i < SIZE * SIZE; i ++) {
  18. 		src[i] = i;
  19. 	}
  20.  
  21. 	printf("Start\n");
  22. 	for (int i = 0; i < 320; i++) {
  23. 		transpose(src, dst, SIZE, SIZE);
  24. 	}
  25. 	printf("Finish\n");
  26.  
  27. 	return 0;
  28. }
  29.  
Success #stdin #stdout 4.96s 10960KB
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https://ideone.com/6GCpUT
language:
C++ (gcc 8.3)
created:
8 years ago
visibility:
public

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