From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Sun, 28 Apr 2019 16:51:46 +0000 (+0100)
Subject: find MSB-pow-2 in different way
X-Git-Tag: ls180-24jan2020~1152
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=1af6226965ce1b06bb6694a61a5247cb1b770642;p=ieee754fpu.git

find MSB-pow-2 in different way
---

diff --git a/src/add/fsqrt.py b/src/add/fsqrt.py
index 135c0f70..dc0922b3 100644
--- a/src/add/fsqrt.py
+++ b/src/add/fsqrt.py
@@ -1,10 +1,10 @@
 # XXX DO NOT USE, fails on num=65536.  wark-wark...
 def sqrtsimple(num):
     res = 0
-    bit = 1 << 14
+    bit = 1
 
-    while (bit > num):
-        bit >>= 2
+    while (bit < num):
+        bit <<= 2
 
     while (bit != 0):
         if (num >= res + bit):