From 293e9798be92bfa04776e8f9592237b7f39985c5 Mon Sep 17 00:00:00 2001 From: lkcl Date: Sat, 16 Jan 2021 12:50:25 +0000 Subject: [PATCH] --- 3d_gpu/architecture/dynamic_simd/logicops.mdwn | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/3d_gpu/architecture/dynamic_simd/logicops.mdwn b/3d_gpu/architecture/dynamic_simd/logicops.mdwn index 73719431f..9208744ce 100644 --- a/3d_gpu/architecture/dynamic_simd/logicops.mdwn +++ b/3d_gpu/architecture/dynamic_simd/logicops.mdwn @@ -1,4 +1,4 @@ -# Logic boolean operations +# Partitioned Logical boolean operations Links @@ -98,11 +98,18 @@ Example: when p2p1p0 == 101 this indicates -* that the output is to contain an XOR of the top 8 bits, the middle 16 bits, and the low 8 bits. this in a 4 bit result (`o3o2o1o0`) divided into `o3`, `o2o1` and `o0` - - the top bit of the 4-bit answer contains x3 - - the middle 2 bits contain the XOR of x1 and x2 - - the first bit contains x0. +* that the output is to contain: + - an XOR of the top 8 bits + - the middle 16 bits + - and the low 8 bits. +* this in a 4 bit result (`o3o2o1o0`) divided into `o3`, `o2o1` and `o0` + - the top bit `o3` of the 4-bit answer contains x3 + - the middle 2 bits `o2o1` contain the XOR of x1 and x2 + - the first bit `o0` contains x0. * therefore, the final result: - the top bit contains the XOR of the input bits 24 to 31 - the middle 2 bits contains the XOR of bits 8 to 15 - the lowest bit contains the XOR of bits 0 to 7. + +A different partition creates a completely different SIMD subdivision. +This is *entirely dynamic*. -- 2.30.2