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/// halves-optimized, 32-bit using bswap + rotation unsigned rbH5 (unsigned arg) { __asm { mov edx, arg mov eax, edx // roling edx rol edx, 2 and eax, 0AAAAAAAAH and edx, 55555555H or eax, edx mov edx, eax // roling eax rol eax, 4 and edx, 99999999H and eax, 66666666H or edx, eax mov eax, edx // roling edx rol edx, 8 and eax, 87878787H and edx, 78787878H or eax, edx ror eax, 7 // rotate back by 1+2+4 bits bswap eax } // return eax }
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