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AMD 64-Bit Technology - ECE User Home Pages

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26568—Rev. 3.02—August 2002<br />

<strong>AMD</strong> <strong>64</strong>-<strong>Bit</strong> <strong>Technology</strong><br />

ORPD<br />

Logical <strong>Bit</strong>wise OR<br />

Packed Double-Precision Floating-Point<br />

Performs a bitwise logical OR of the two packed double-precision floating-point values<br />

in the first source operand and the corresponding two packed double-precision<br />

floating-point values in the second source operand and writes the result in the<br />

destination (first source). The first source/destination operand is an XMM register.<br />

The second source operand is another XMM register or 128-bit memory location.<br />

Mnemonic Opcode Description<br />

ORPD xmm1, xmm2/mem128 66 0F 56 /r Performs bitwise logical OR of two packed double-precision floatingpoint<br />

values in an XMM register and in another XMM register or 128-<br />

bit memory location and writes the result in the destination XMM<br />

register.<br />

xmm1<br />

xmm2/mem128<br />

127 <strong>64</strong> 63 0 127 <strong>64</strong> 63 0<br />

OR<br />

OR<br />

orpd.eps<br />

Related Instructions<br />

ANDNPD, ANDNPS, ANDPD, ANDPS, ORPS, XORPD, XORPS<br />

rFLAGS Affected<br />

None<br />

MXCSR Flags Affected<br />

None<br />

ORPD 201

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