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MAXPD

Compares two packed double-precision floating-point values and stores the maximum value from each pair in the destination.

The following table describes the supported source and destination operands.

DO NOT support LOCK

This instruction requires the SSE3 extension. It is available in both 64-bit mode and compatibility mode.

If either operand is a Quiet NaN, the result is the Quiet NaN. If one operand is a Signaling NaN and the other is a Quiet NaN, the result is the Quiet NaN. If one operand is a Signaling NaN and the other is not a NaN, the result is the Signaling NaN. In the case of comparing a positive zero (+0.0) and a negative zero (-0.0), the positive zero is considered the maximum.

The instruction may trigger #P if the result is inexact.