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while (lhs_md_cur_ptr < lhs_md_end_ptr) { |
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uint8_t distance = *(uint8_t*)lhs_md_cur_ptr ^ *(uint8_t*)rhs_md_cur_ptr; |
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if (distance == 0x00) { // same d, s. |
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acc += 2; |
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} else if (distance < 0x10) { // same d, diff s. |
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acc += 0; |
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} |
Based on the matching stage's math definition
$$M\left(X,Y\right)=\frac{1}{2N^2}\sum_{i=1}^{N}\sum_{j=1}^{N}\left[\left(C_X\left(i,j\right)==C_Y\left(i,j\right)\right)+\left(C_X\left(i,j\right)==C_Y\left(i,j\right)\right)\cap\lnot\left(Cs_X\left(i,j\right)\oplus C s_Y\left(i,j\right)\right)\right]$$
When the variable $d$ is the same but the variable $s$ is different, the acc variable should be increased by 1.
In addition, if the variable $d$ is the same but the variable $s$ is different, the distance should yield a specific value of 0x10. It is not recommended to use a comparison expression for this simple operation; instead, an equality expression should be used.
