diff --git a/src/lib/openjp2/invert.c b/src/lib/openjp2/invert.c index 31088952..da8dad72 100644 --- a/src/lib/openjp2/invert.c +++ b/src/lib/openjp2/invert.c @@ -115,85 +115,85 @@ opj_bool opj_lupDecompose(OPJ_FLOAT32 * matrix,OPJ_UINT32 * permutations, OPJ_UINT32 offset = 1; OPJ_UINT32 lStride = n-1; - //initialize permutations + /*initialize permutations */ for (i = 0; i < n; ++i) { *tmpPermutations++ = i; } - // now make a pivot with colum switch + /* now make a pivot with colum switch */ tmpPermutations = permutations; for (k = 0; k < lLastColum; ++k) { p = 0.0; - // take the middle element + /* take the middle element */ lColumnMatrix = lTmpMatrix + k; - // make permutation with the biggest value in the column + /* make permutation with the biggest value in the column */ for (i = k; i < n; ++i) { temp = ((*lColumnMatrix > 0) ? *lColumnMatrix : -(*lColumnMatrix)); if (temp > p) { p = temp; k2 = i; } - // next line + /* next line */ lColumnMatrix += n; } - // a whole rest of 0 -> non singular + /* a whole rest of 0 -> non singular */ if (p == 0.0) { return OPJ_FALSE; } - // should we permute ? + /* should we permute ? */ if (k2 != k) { - //exchange of line - // k2 > k + /*exchange of line */ + /* k2 > k */ dstPermutations = tmpPermutations + k2 - k; - // swap indices + /* swap indices */ t = *tmpPermutations; *tmpPermutations = *dstPermutations; *dstPermutations = t; - // and swap entire line. + /* and swap entire line. */ lColumnMatrix = lTmpMatrix + (k2 - k) * n; memcpy(p_swap_area,lColumnMatrix,lSwapSize); memcpy(lColumnMatrix,lTmpMatrix,lSwapSize); memcpy(lTmpMatrix,p_swap_area,lSwapSize); } - // now update data in the rest of the line and line after + /* now update data in the rest of the line and line after */ lDestMatrix = lTmpMatrix + k; lColumnMatrix = lDestMatrix + n; - // take the middle element + /* take the middle element */ temp = *(lDestMatrix++); - // now compute up data (i.e. coeff up of the diagonal). + /* now compute up data (i.e. coeff up of the diagonal). */ for (i = offset; i < n; ++i) { - //lColumnMatrix; - // divide the lower column elements by the diagonal value + /*lColumnMatrix; */ + /* divide the lower column elements by the diagonal value */ - // matrix[i][k] /= matrix[k][k]; - // p = matrix[i][k] + /* matrix[i][k] /= matrix[k][k]; */ + /* p = matrix[i][k] */ p = *lColumnMatrix / temp; *(lColumnMatrix++) = p; for (j = /* k + 1 */ offset; j < n; ++j) { - // matrix[i][j] -= matrix[i][k] * matrix[k][j]; + /* matrix[i][j] -= matrix[i][k] * matrix[k][j]; */ *(lColumnMatrix++) -= p * (*(lDestMatrix++)); } - // come back to the k+1th element + /* come back to the k+1th element */ lDestMatrix -= lStride; - // go to kth element of the next line + /* go to kth element of the next line */ lColumnMatrix += k; } - // offset is now k+2 + /* offset is now k+2 */ ++offset; - // 1 element less for stride + /* 1 element less for stride */ --lStride; - // next line + /* next line */ lTmpMatrix+=n; - // next permutation element + /* next permutation element */ ++tmpPermutations; } return OPJ_TRUE; @@ -228,18 +228,18 @@ void opj_lupSolve (OPJ_FLOAT32 * pResult, lTmpMatrix = lLineMatrix; for (j = 1; j <= i; ++j) { - // sum += matrix[i][j-1] * y[j-1]; + /* sum += matrix[i][j-1] * y[j-1]; */ sum += (*(lTmpMatrix++)) * (*(lCurrentPtr++)); } - //y[i] = pVector[pPermutations[i]] - sum; + /*y[i] = pVector[pPermutations[i]] - sum; */ *(lIntermediatePtr++) = pVector[*(lCurrentPermutationPtr++)] - sum; lLineMatrix += n; } - // we take the last point of the matrix + /* we take the last point of the matrix */ lLineMatrix = pMatrix + n*n - 1; - // and we take after the last point of the destination vector + /* and we take after the last point of the destination vector */ lDestPtr = pResult + n; for (i = n - 1; i != -1 ; --i) { @@ -248,10 +248,10 @@ void opj_lupSolve (OPJ_FLOAT32 * pResult, u = *(lTmpMatrix++); lCurrentPtr = lDestPtr--; for (j = i + 1; j < n; ++j) { - // sum += matrix[i][j] * x[j] + /* sum += matrix[i][j] * x[j] */ sum += (*(lTmpMatrix++)) * (*(lCurrentPtr++)); } - //x[i] = (y[i] - sum) / u; + /*x[i] = (y[i] - sum) / u; */ *(lBeginPtr--) = (*(lGeneratedData--) - sum) / u; lLineMatrix -= lStride; }