From add381a09efd7d466760868f292d80100df4e40b Mon Sep 17 00:00:00 2001
From: David Harris <david_harris@hmc.edu>
Date: Mon, 26 Dec 2022 08:54:57 -0800
Subject: [PATCH] Fixed early termination for square root

---
 pipelined/src/fpu/fdivsqrt/fdivsqrtfsm.sv | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/pipelined/src/fpu/fdivsqrt/fdivsqrtfsm.sv b/pipelined/src/fpu/fdivsqrt/fdivsqrtfsm.sv
index f63168290..c967186cf 100644
--- a/pipelined/src/fpu/fdivsqrt/fdivsqrtfsm.sv
+++ b/pipelined/src/fpu/fdivsqrt/fdivsqrtfsm.sv
@@ -116,8 +116,7 @@ module fdivsqrtfsm(
           if (SpecialCaseE) state <= #1 DONE;
           else             state <= #1 BUSY;
       end else if (state == BUSY) begin 
-//          if (step == 1 | WZeroE)  state <= #1 DONE; // finished steps or terminate early on zero residual
-          if (step == 1)  state <= #1 DONE; // finished steps or terminate early on zero residual
+          if (step == 1 | WZeroE)  state <= #1 DONE; // finished steps or terminate early on zero residual
           step <= step - 1;
       end else if (state == DONE) begin
         if (StallM) state <= #1 DONE;