SSE_ALL-Swizzle-Other

SSE_ALL-Swizzle-Other#

_MM_TRANSPOSE4_PS#

Tech:

SSE_ALL

Category:

Swizzle

Header:

xmmintrin.h

Searchable:

SSE_ALL-Swizzle-Other

Return Type:

void

Param Types:

__m128 row0, __m128 row1, __m128 row2, __m128 row3

Param ETypes:

FP32 row0, FP32 row1, FP32 row2, FP32 row3

void _MM_TRANSPOSE4_PS(__m128 row0, __m128 row1,
                       __m128 row2, __m128 row3)

Intel Description

Macro: Transpose the 4x4 matrix formed by the 4 rows of single-precision (32-bit) floating-point elements in “row0”, “row1”, “row2”, and “row3”, and store the transposed matrix in these vectors (“row0” now contains column 0, etc.).

Intel Implementation Psudeo-Code

__m128 tmp3, tmp2, tmp1, tmp0;
tmp0 := _mm_unpacklo_ps(row0, row1);
tmp2 := _mm_unpacklo_ps(row2, row3);
tmp1 := _mm_unpackhi_ps(row0, row1);
tmp3 := _mm_unpackhi_ps(row2, row3);
row0 := _mm_movelh_ps(tmp0, tmp2);
row1 := _mm_movehl_ps(tmp2, tmp0);
row2 := _mm_movelh_ps(tmp1, tmp3);
row3 := _mm_movehl_ps(tmp3, tmp1);
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