Add Note to simd citing Flynn 1966

Author: mhoemmen

source/numerics.tex

@@ -16083,7 +16083,12 @@
 \rSec2[simd.general]{General}
 
 \pnum
-Subclause \ref{simd} defines data-parallel types and operations on these types.
+Subclause \ref{simd}
+\begin{note}
+SIMD stands for ``Single Instruction Stream -- Multiple Data Stream'';
+it is defined in Flynn 1966\supercite{flynn-taxonomy}
+\end{note}
+defines data-parallel types and operations on these types.
 \begin{note}
 The intent is to support acceleration through data-parallel execution resources
 where available, such as SIMD registers and instructions or execution units