From: Aleksandar Kostovic <alexandar.kostovic@gmail.com>
Date: Sun, 17 Feb 2019 17:43:24 +0000 (+0100)
Subject: Add more special cases to the module
X-Git-Tag: ls180-24jan2020~1919
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=e1db3d985344622c4782ec9c4f126995e2b795de;p=ieee754fpu.git

Add more special cases to the module
---

diff --git a/src/add/fmul.py b/src/add/fmul.py
index ad57a9ef..4d54c98d 100644
--- a/src/add/fmul.py
+++ b/src/add/fmul.py
@@ -84,6 +84,27 @@ class FPMUL(FPBase):
         		with m.Elif(a.is_zero()):
         			m.next += "put_z"
         			m.d.sync += z.zero(0)
+        		#if b is zero return zero
+        		with m.Elif(b.is_zero()):
+        			m.next += "put_z"
+        			m.d.sync += z.zero(0)
+                # Denormalised Number checks
+				with m.Else():
+                   	m.next = "normalise_a"
+                    self.denormalise(m, a)
+                    self.denormalise(m, b)
+
+            # ******
+            # normalise_a
+
+            with m.State("normalise_a"):
+                self.op_normalise(m, a, "normalise_b")
+
+            # ******
+            # normalise_b
+
+            with m.State("normalise_b"):
+                self.op_normalise(m, b, "multiply_0")
 
 
 
@@ -135,6 +156,7 @@ special_cases:
           z[30:23] <= 0;
           z[22:0] <= 0;
           state <= put_z;
+          //^ done up to here
         end else begin
           //Denormalised Number
           if ($signed(a_e) == -127) begin