From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Fri, 29 Mar 2019 19:37:37 +0000 (+0000)
Subject: create e_match temporary
X-Git-Tag: ls180-24jan2020~1370
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=3ec651100ac1c59a2430970aa387d9bc3e0fe603;p=ieee754fpu.git

create e_match temporary
---

diff --git a/src/add/fpadd/specialcases.py b/src/add/fpadd/specialcases.py
index a7855609..d1c1b1fc 100644
--- a/src/add/fpadd/specialcases.py
+++ b/src/add/fpadd/specialcases.py
@@ -55,12 +55,15 @@ class FPAddSpecialCasesMod:
                      b1.decode(self.i.b),
                     ]
 
-        s_nomatch = Signal()
+        s_nomatch = Signal(reset_less=True)
         m.d.comb += s_nomatch.eq(a1.s != b1.s)
 
-        m_match = Signal()
+        m_match = Signal(reset_less=True)
         m.d.comb += m_match.eq(a1.m == b1.m)
 
+        e_match = Signal(reset_less=True)
+        m.d.comb += m_match.eq(a1.e == b1.e)
+
         # if a is NaN or b is NaN return NaN
         with m.If(a1.is_nan | b1.is_nan):
             m.d.comb += self.o.out_do_z.eq(1)
@@ -118,7 +121,7 @@ class FPAddSpecialCasesMod:
             m.d.comb += self.o.z.create(a1.s, a1.e, a1.m[3:-1])
 
         # if a equal to -b return zero (+ve zero)
-        with m.Elif(s_nomatch & m_match & (a1.e == b1.e)):
+        with m.Elif(s_nomatch & m_match & e_match):
             m.d.comb += self.o.out_do_z.eq(1)
             m.d.comb += self.o.z.zero(0)