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_mm256_slli_epi16/32/64

Logical shift of word/doubleword/quadword elements to left according to specified number. The corresponding Intel® AVX2 instruction is
VPSLLW
,
VPSLLD
, or
VPSLLQ
.

Syntax

extern __m256i _mm256_slli_epi16(__m256i s1, int count);
extern __m256i _mm256_slli_epi32(__m256i s1, int count);
extern __m256i _mm256_slli_epi64(__m256i s1, int count);
Arguments
s1
integer source vector used for the operation
count
8-bit immediate used for the operation
Description
Performs a logical shift of bits in the individual data elements (words, doublewords, or quadword) in source vector
s1
to the left 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 15/31/63 (depending on the intrinsic being used), the destination vector is set to all 0s. The
count
argument is an 8-bit immediate.
Returns
Result of the left-shift operation.