| Parameter | Description |
|---|---|
| a | Vector a |
| b | Vector b |
| imm8 | imm8 |
v256 Vector
Shuffle double-precision (64-bit) floating-point elements within 128-bit lanes using the control in imm8, and store the results in dst.
____ VSHUFPD ymm1, ymm2, ymm3/v256, imm8 Moves either of the two packed double-precision floating-point values from each double quadword in the first source operand into the low quadword of each double quadword of the destination; moves either of the two packed double-precision floating-point values from the second source operand into the high quadword of each double quadword of the destination operand. The selector operand determines which values are moved to the destination