Arithmetic shift of word/doubleword elements to right according to specified number. The corresponding Intel® AVX2 instruction is VPSRAW or VPSRAD.
Syntax
extern __m256i _mm256_srai_epi16(__m256i s1, const int count); |
extern __m256i _mm256_srai_epi32(__m256i s1, const int count); |
Description
Performs an arithmetic shift of 16-bit [word] or 32-bit [doubleword] elements within a 128-bit lane of source vector s1 to the right by the number of bits specified in count. The empty low-order bytes are cleared (set to all '0'). If the value specified by count is greater than 15 or 31, the destination vector is set to all '0'. The count argument is an 8-bit immediate.
Parent topic: Intrinsics for Arithmetic Shift Operations