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PSUBQ

Subtracts two 64-bit packed integers.

The following table covers what the source and destinations can be.

DO NOT support LOCK

This instruction is only available when the processor is operating in 64-bit mode or compatibility mode. It requires the SSE2 instruction set.

The operation performs a saturated subtraction. If the result of the subtraction is smaller than the minimum possible signed 64-bit integer, the result is saturated to the minimum signed 64-bit integer value. If the result is larger than the maximum possible signed 64-bit integer, it is saturated to the maximum signed 64-bit integer value.