ded version)</strong></p>
<pre>DEST[63:0] ← SRC1[63:0]-SRC2[63:0]
DEST[127:64] ← SRC1[127:64]-SRC2[127:64]
DEST[VLMAX-1:128] ← 0</pre>
<p><strong>VPSUBQ (VEX.256 encoded version)</strong></p>
<pre>DEST[63:0] ← SRC1[63:0]-SRC2[63:0]
DEST[127:64] ← SRC1[127:64]-SRC2[127:64]
DEST[191:128] ← SRC1[191:128]-SRC2[191:128]
DEST[255:192] ← SRC1[255:192]-SRC2[255:192]</pre>
<h2>Intel C/C++ Compiler Intrinsic Equivalents</h2>
<p>PSUBQ:</p>
<p>__m64 _mm_sub_si64(__m64 m1, __m64 m2)</p>
<p>(V)PSUBQ:</p>
<p