Packed Compare Intrinsics

These Intel® Streaming SIMD Extensions (Intel® SSE4) intrinsics perform packed comparisons. Some of these intrinsics could map to more than one instruction; the Intel® C++ Compiler selects the instruction to generate.

The prototypes for these intrinsics are in the nmmintrin.h file.

Intrinsic Name	Operation	Corresponding Intel® SSE4 Instruction
_mm_cmpestri	Packed comparison, generates index	PCMPESTRI
_mm_cmpestrm	Packed comparison, generates mask	PCMPESTRM
_mm_cmpistri	Packed comparison, generates index	PCMPISTRI
_mm_cmpistrm	Packed comparison, generates mask	PCMPISTRM
_mm_cmpestrz	Packed comparison	PCMPESTRM or PCMPESTRI
_mm_cmpestrc	Packed comparison	PCMPESTRM or PCMPESTRI
_mm_cmpestrs	Packed comparison	PCMPESTRM or PCMPESTRI
_mm_cmpestro	Packed comparison	PCMPESTRM or PCMPESTRI
_mm_cmpestra	Packed comparison	PCMPESTRM or PCMPESTRI
_mm_cmpistrz	Packed comparison	PCMPISTRM or PCMPISTRI
_mm_cmpistrc	Packed comparison	PCMPISTRM or PCMPISTRI
_mm_cmpistrs	Packed comparison	PCMPISTRM or PCMPISTRI
_mm_cmpistro	Packed comparison	PCMPISTRM or PCMPISTRI
_mm_cmpistra	Packed comparison	PCMPISTRM or PCMPISTRI

int _mm_cmpestri(__m128i src1, int len1, __m128i src2, int len2, const int mode)

This intrinsic performs a packed comparison of string data with explicit lengths, generating an index and storing the result in ECX.

__m128i _mm_cmpestrm(__m128i src1, int len1, __m128i src2, int len2, const int mode)

This intrinsic performs a packed comparison of string data with explicit lengths, generating a mask and storing the result in XMM0.

int _mm_cmpistri(__m128i src1, __m128i src2, const int mode)

This intrinsic performs a packed comparison of string data with implicit lengths, generating an index and storing the result in ECX.

__m128i _mm_cmpistrm(__m128i src1, __m128i src2, const int mode)

This intrinsic performs a packed comparison of string data with implicit lengths, generating a mask and storing the result in XMM0.

int _mm_cmpestrz(__m128i src1, int len1, __m128i src2, int len2, const int mode);

This intrinsic performs a packed comparison of string data with explicit lengths. Returns 1 if ZFlag == 1, otherwise 0.

int _mm_cmpestrc(__m128i src1, int len1, __m128i src2, int len2, const int mode);

This intrinsic performs a packed comparison of string data with explicit lengths. Returns 1 if CFlag == 1, otherwise 0.

int _mm_cmpestrs(__m128i src1, int len1, __m128i src2, int len2, const int mode);

This intrinsic performs a packed comparison of string data with explicit lengths. Returns 1 if SFlag == 1, otherwise 0.

int _mm_cmpestro(__m128i src1, int len1, __m128i src2, int len2, const int mode);

This intrinsic performs a packed comparison of string data with explicit lengths. Returns 1 if OFlag == 1, otherwise 0.

int _mm_cmpestra(__m128i src1, int len1, __m128i src2, int len2, const int mode);

This intrinsic performs a packed comparison of string data with explicit lengths. Returns 1 if CFlag == 0 and ZFlag == 0, otherwise 0.

int _mm_cmpistrz(__m128i src1, __m128i src2, const int mode);

This intrinsic performs a packed comparison of string data with implicit lengths. Returns 1 if (ZFlag == 1), otherwise 0.

int _mm_cmpistrc(__m128i src1, __m128i src2, const int mode);

This intrinsic performs a packed comparison of string data with implicit lengths. Returns 1 if (CFlag == 1), otherwise 0.

int _mm_cmpistrs(__m128i src1, __m128i src2, const int mode);

This intrinsic performs a packed comparison of string data with implicit lengths. Returns 1 if (SFlag == 1), otherwise 0.

int _mm_cmpistro(__m128i src1, __m128i src2, const int mode);

This intrinsic performs a packed comparison of string data with implicit lengths. Returns 1 if (OFlag == 1), otherwise 0.

int _mm_cmpistra(__m128i src1, __m128i src2, const int mode);

This intrinsic performs a packed comparison of string data with implicit lengths. Returns 1 if (ZFlag == 0 and CFlag == 0), otherwise 0.