diff options
| author | _ov4 <ov4@ov4.org> | 2026-07-22 11:12:18 +0000 |
|---|---|---|
| committer | _ov4 <ov4@ov4.org> | 2026-07-22 11:12:18 +0000 |
| commit | ca5995eef44312d2694efcc37dbc799c04b091e3 (patch) | |
| tree | 1c019f339f0f63d740b76f9ca956c82dc51d901b /cachelab-handout | |
| parent | bec2926ad814415235905d60cd6dab408225687c (diff) | |
use more tmp
Diffstat (limited to 'cachelab-handout')
| -rw-r--r-- | cachelab-handout/.gitignore | 1 | ||||
| -rw-r--r-- | cachelab-handout/trans.c | 43 |
2 files changed, 17 insertions, 27 deletions
diff --git a/cachelab-handout/.gitignore b/cachelab-handout/.gitignore index 50eaddd..41e23cf 100644 --- a/cachelab-handout/.gitignore +++ b/cachelab-handout/.gitignore @@ -4,3 +4,4 @@ csim_results test-trans trace.* tracegen +csim diff --git a/cachelab-handout/trans.c b/cachelab-handout/trans.c index db6f9d3..c69500c 100644 --- a/cachelab-handout/trans.c +++ b/cachelab-handout/trans.c @@ -22,41 +22,30 @@ int is_transpose(int M, int N, int A[N][M], int B[M][N]); char transpose_submit_desc[] = "Transpose submission"; void transpose_submit(int M, int N, int A[N][M], int B[M][N]) { - - // FILE *fp = fopen("debug.log", "w"); - // if (fp == NULL) { - // perror("lol"); - // return; - // } - // fprintf(fp, "address of A and B: %p %p\n", A, B); - // fclose(fp); - - - int i, j, tmp, i2, j2; + int i, j, tmp, i2; + int t0, t1, t2, t3; const int blockSize = 4; - // given N, M are multiples of blockSize - // just to test for (i = 0; i < N/blockSize; i++) { for (j = 0; j < M/blockSize; j++) { for (i2 = 0; i2 < blockSize; i2++) { - for (j2 = 0; j2 < blockSize; j2++) - { - tmp = A[i*blockSize + i2][j*blockSize + j2]; - B[j*blockSize + i2][i*blockSize + j2] = tmp; - } - } - for (i2 = 0; i2 < blockSize; i2++) - { - for (j2 = i2+1; j2 < blockSize; j2++) - { - tmp = B[j*blockSize + i2][i*blockSize + j2]; - B[j*blockSize + i2][i*blockSize + j2] = B[j*blockSize + j2][i*blockSize + i2]; - B[j*blockSize + j2][i*blockSize + i2] = tmp; - } + // for (j2 = 0; j2 < blockSize; j2++) + // { + // tmp = A[i*blockSize + i2][j*blockSize + j2]; + // B[j*blockSize + j2][i*blockSize + i2] = tmp; + // } + t0 = tmp = A[i*blockSize + i2][j*blockSize + 0]; + t1 = tmp = A[i*blockSize + i2][j*blockSize + 1]; + t2 = tmp = A[i*blockSize + i2][j*blockSize + 2]; + t3 = tmp = A[i*blockSize + i2][j*blockSize + 3]; + + B[j*blockSize + 0][i*blockSize + i2] = t0; + B[j*blockSize + 1][i*blockSize + i2] = t1; + B[j*blockSize + 2][i*blockSize + i2] = t2; + B[j*blockSize + 3][i*blockSize + i2] = t3; } } } |