[Issue 3671] x^^3 gives wrong result when x is a floating-point literal

2015-06-09 Thread via Digitalmars-d-bugs
https://issues.dlang.org/show_bug.cgi?id=3671

Andrei Alexandrescu  changed:

   What|Removed |Added

Version|2.038   |D2

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[Issue 3671] x^^3 gives wrong result when x is a floating-point literal

2010-01-31 Thread d-bugmail
http://d.puremagic.com/issues/show_bug.cgi?id=3671


Walter Bright  changed:

   What|Removed |Added

 Status|NEW |RESOLVED
 Resolution||FIXED


--- Comment #3 from Walter Bright  2010-01-30 
22:46:39 PST ---
fixed dmd 2.040

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[Issue 3671] x^^3 gives wrong result when x is a floating-point literal

2010-01-11 Thread d-bugmail
http://d.puremagic.com/issues/show_bug.cgi?id=3671


Walter Bright  changed:

   What|Removed |Added

 CC||bugzi...@digitalmars.com


--- Comment #2 from Walter Bright  2010-01-11 
22:01:23 PST ---
Changeset 332

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[Issue 3671] x^^3 gives wrong result when x is a floating-point literal

2010-01-04 Thread d-bugmail
http://d.puremagic.com/issues/show_bug.cgi?id=3671


Don  changed:

   What|Removed |Added

 CC||clugd...@yahoo.com.au
   Severity|major   |critical


--- Comment #1 from Don  2010-01-04 04:17:59 PST ---
Ouch. I don't know what's happened here. The test suite I provided with the
patch in bug 3577 doesn't compile! 
This quick patch fixes the immediate bug reported here, but it still doesn't
compile the 3577 test suite.
The culprit is the call to typeCombine(). The test needs to be performed before
that.

Index: expression.c
===
--- expression.c(revision 324)
+++ expression.c(working copy)
@@ -9965,6 +9971,9 @@
  ) && (e1->op == TOKint64 || e1->op == TOKfloat64)
)
 {
+bool wantCube = (e2->op == TOKint64 && e2->toInteger() == 3) 
+  || (e2->op == TOKfloat64 && e2->toReal() == 3.0);
+  
 typeCombine(sc);
 // Replace x^^2 with (tmp = x, tmp*tmp)
 // Replace x^^3 with (tmp = x, tmp*tmp*tmp) 
@@ -9973,8 +9982,8 @@
 VarExp * ve = new VarExp(loc, tmp);
 Expression *ae = new DeclarationExp(loc, tmp);
 Expression *me = new MulExp(loc, ve, ve);
-if ( (e2->op == TOKint64 && e2->toInteger() == 3) 
-  || (e2->op == TOKfloat64 && e2->toReal() == 3.0))
+
+if ( wantCube)
 me = new MulExp(loc, me, ve);
 e = new CommaExp(loc, ae, me);
 e = e->semantic(sc);

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