Add more special cases to the module

diff --git a/src/add/fmul.py b/src/add/fmul.py
index ad57a9ef63d27a2eaa55a5488d0897c46ea9a183..4d54c98dffb813f2ab4999576cd94d89f1be863e 100644 (file)
--- 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