From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Fri, 22 Oct 2021 14:01:16 +0000 (+0100)
Subject: in SimdScope only update module AST Typecast function in SIMD mode
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=1411a10fcf1bc0986fe57bb23144904b67941a4f;p=ieee754fpu.git

in SimdScope only update module AST Typecast function in SIMD mode
do not whatever you do change the mode over to Simd casting in Scalar mode
---

diff --git a/src/ieee754/part/simd_scope.py b/src/ieee754/part/simd_scope.py
index da17af18..ca134918 100644
--- a/src/ieee754/part/simd_scope.py
+++ b/src/ieee754/part/simd_scope.py
@@ -79,12 +79,13 @@ class SimdScope:
     def __init__(self, *, module, elwid=None,
                  vec_el_counts=None, elwid_type=IntElWid, scalar=False):
 
-        # must establish module as part of context and inform
+        # in SIMD mode, must establish module as part of context and inform
         # the module to operate under "SIMD" Type 1 (AST) casting rules,
         # not the # default "Value.cast" rules.
-        self.module = module
-        from ieee754.part.partsig import SimdSignal
-        module._setAstTypeCastFn(SimdSignal.cast)
+        if not scalar:
+            self.module = module
+            from ieee754.part.partsig import SimdSignal
+            module._setAstTypeCastFn(SimdSignal.cast)
 
         if isinstance(elwid, (IntElWid, FpElWid)):
             elwid_type = type(elwid)