2 Architectures Software Developer’s Manual, Volume 1</em>.</p>
<h2>Operation</h2>
<p>In the operations below, "+", "-", and "*" symbols represent addition, subtraction, and multiplication operations with infinite precision inputs and outputs (no rounding).</p>
<p><strong>VFNMADD132SD DEST, SRC2, SRC3</strong></p>
<pre>DEST[63:0] ← RoundFPControl_MXCSR(- (DEST[63:0]*SRC3[63:0]) + SRC2[63:0])
DEST[127:64] ← DEST[127:64]
DEST[VLMAX-1:128] ← 0</pre>
<p><strong>VFNMADD213SD DEST, SRC2, SRC3</strong></p>