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clauderoux | 8 months ago
Here is the example for 4 characters: //We look for the presence of four characters in a row ``` int32_t cc = search[3]; for (shift = 2; shift >= 0; shift--) { cc <<= 8; cc |= search[shift]; } __m256i firstchar = _mm256_set1_epi16(cc); ```
In this case, I will look for a 4 bytes integers over my sequence: ``` current_bytes = _mm256_cmpeq_epi16(firstchar, current_bytes); q <<= 1; q |= _mm256_movemask_epi8(current_bytes); ```` I'm looking for blocks of 4 characters at a time in my string.
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