From: lkcl <lkcl@web>
Date: Fri, 18 Dec 2020 19:11:34 +0000 (+0000)
Subject: (no commit message)
X-Git-Tag: convert-csv-opcode-to-binary~1219
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=726e47ad991cab1eb301c32b52b375559cceddd2;p=libreriscv.git

---

diff --git a/3d_gpu/architecture/dynamic_simd/logicops.mdwn b/3d_gpu/architecture/dynamic_simd/logicops.mdwn
new file mode 100644
index 000000000..fca18cb62
--- /dev/null
+++ b/3d_gpu/architecture/dynamic_simd/logicops.mdwn
@@ -0,0 +1,14 @@
+# Logic boolean operations
+
+These are not the same as bitwise operations equivslent to:
+
+     for i in range(64):
+         result[i] = a[i] or b[i]
+
+they are instead SIMD versions of:
+
+     result = 0 # initial value
+     for i in range(64):
+         result = result or a[i]
+
+