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VEXTRACTF64x4

Extracts four double-precision floating-point values from the specified index of the source vector and writes them to the destination vector.

The following table specifies the supported source and destination operands.

DO NOT support LOCK

This instruction is available only in 64-bit mode. It requires the AVX-512 foundation extensions to be enabled.

The index provided via the immediate operand SHALL be within the range of the source vector's elements to avoid undefined behavior; specifically, since it extracts four f64 values, the maximum valid index is 4 (for a 512-bit zmm register containing eight f64 values). Using an out-of-bounds index MAY result in the extraction of zero values or other architecture-specific behavior depending on the implementation.