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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 />

MULPD<br />

Multiply Packed Double-Precision Floating-<br />

Point<br />

Multiplies each of the two packed double-precision floating-point values in the first<br />

source operand by the corresponding packed double-precision floating-point value in<br />

the second source operand and writes the result of each multiplication operation in<br />

the corresponding quadword of the destination (first source). The first<br />

source/destination operand is an XMM register. The second source operand is another<br />

XMM register or 128-bit memory location.<br />

Mnemonic Opcode Description<br />

MULPD xmm1, xmm2/mem128 66 0F 59 /r Multiplies packed double-precision floating-point values in an<br />

XMM register and another XMM register or 128-bit memory<br />

location and writes the results in the destination XMM register.<br />

xmm1<br />

xmm2/mem128<br />

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

multiply<br />

multiply<br />

mulpd.eps<br />

Related Instructions<br />

MULPS, MULSD, MULSS, PFMUL<br />

rFLAGS Affected<br />

None<br />

MULPD 189

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