These Intel® Streaming SIMD Extension 4 (Intel® SSE4) intrinsics convert a packed integer to a zero-extended or sign-extended integer with wider type. The prototypes for these instrinsics are in the smmintrin.h file.
Intrinsic Syntax |
Operation |
Corresponding |
|---|---|---|
__m128i _mm_cvtepi8_epi32(__m128i a) |
Sign extend 4 bytes into 4 double words |
PMOVSXBD |
__m128i _mm_cvtepi8_epi64 (__m128i a) |
Sign extend 2 bytes into 2 quad words |
PMOVSXBQ |
__m128i _mm_cvtepi8_epi16(__m128i a) |
Sign extend 8 bytes into 8 words |
PMOVSXBW |
__m128i _mm_cvtepi32_epi64(__m128i a) |
Sign extend 2 double words into 2 quad words |
PMOVSXDQ |
__m128i _mm_cvtepi16_epi32(__m128i a) |
Sign extend 4 words into 4 double words |
PMOVSXWD |
__m128i _mm_cvtepi16_epi64(__m128i a) |
Sign extend 2 words into 2 quad words |
PMOVSXWQ |
__m128i _mm_cvtepu8_epi32(__m128i a) |
Zero extend 4 bytes into 4 double words |
PMOVZXBD |
__m128i _mm_cvtepu8_epi64(__m128i a) |
Zero extend 2 bytes into 2 quad words |
PMOVZXBQ |
__m128i _mm_cvtepu8_epi16(__m128i a) |
Zero extend 8 bytes into 8 word |
PMOVZXBW |
__m128i _mm_cvtepu32_epi64(__m128i a) |
Zero extend 2 double words into 2 quad words |
PMOVZXDQ |
__m128i _mm_cvtepu16_epi32(__m128i a) |
Zero extend 4 words into 4 double words |
PMOVZXWD |
__m128i _mm_cvtepu16_epi64(__m128i a) |
Zero extend 2 words into 2 quad words |
PMOVZXWQ |
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