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AMD x86-64 Architecture Programmer's Manual, Volume 4, 128-Bit ...

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<strong>AMD</strong><strong>64</strong> Technology 26568—Rev. 3.05—September 2003<br />

UNPCKLPS Unpack Low Single-Precision Floating-Point<br />

Unpacks the low-order single-precision floating-point values in the first and second<br />

source operands and packs them into interleaved doublewords in the destination (first<br />

source). The high-order quadwords of the source operands are ignored. The first<br />

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

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

Mnemonic Opcode Description<br />

UNPCKLPS xmm1, xmm2/mem<strong>128</strong> 0F 14 /r Unpacks low-order single-precision floating-point values in an<br />

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

location and packs them into the destination XMM register.<br />

Related Instructions<br />

UNPCKHPD, UNPCKHPS, UNPCKLPD<br />

rFLAGS Affected<br />

None<br />

MXCSR Flags Affected<br />

None<br />

xmm1 xmm2/mem<strong>128</strong><br />

127 <strong>64</strong> 63 32 31<br />

0<br />

copy<br />

127 96 95 <strong>64</strong> 63 32 31<br />

0<br />

394 UNPCKLPS<br />

127 <strong>64</strong> 63 32 31<br />

0<br />

copy copy copy<br />

unpcklps.eps

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