From: Jacob Lifshay <programmerjake@gmail.com>
Date: Thu, 25 Jul 2019 06:41:01 +0000 (-0700)
Subject: Revert "reduce LHS for RSQRT by a factor of fract_width and"
X-Git-Tag: ls180-24jan2020~731
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=11a7d94154db8f7b3bda18396e8166cfe0bb7788;p=ieee754fpu.git

Revert "reduce LHS for RSQRT by a factor of fract_width and"

This reverts commit c6149c74b64a00d0ca8059468e8709ccb200e301.
---

diff --git a/src/ieee754/div_rem_sqrt_rsqrt/core.py b/src/ieee754/div_rem_sqrt_rsqrt/core.py
index 1c1e4c29..b62a9574 100644
--- a/src/ieee754/div_rem_sqrt_rsqrt/core.py
+++ b/src/ieee754/div_rem_sqrt_rsqrt/core.py
@@ -78,6 +78,7 @@ class DivPipeCoreOperation(enum.Enum):
 
 DP = DivPipeCoreOperation
 
+
 class DivPipeCoreInputData:
     """ input data type for ``DivPipeCore``.
 
@@ -249,7 +250,7 @@ class DivPipeCoreSetupStage(Elaboratable):
                 self.i.divisor_radicand << (self.core_config.fract_width * 2))
         with m.Else():  # DivPipeCoreOperation.RSqrtRem
             m.d.comb += self.o.compare_lhs.eq(
-                1 << (self.core_config.fract_width * 2)) # XXX reduced from 3
+                1 << (self.core_config.fract_width * 3))
 
         m.d.comb += self.o.compare_rhs.eq(0)
         m.d.comb += self.o.operation.eq(self.i.operation)