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trees.nim: compare floating points by their bitpatterns because NaN comparisions are always false (WORST design in the history of computing!)

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Araq 2020-03-23 12:03:49 +01:00
commit 28a755dc80
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compiler/trees.nim
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@ -39,7 +39,7 @@ proc exprStructuralEquivalent*(a, b: PNode; strictSymEquality=false): bool =
result = a.sym.name.id == b.sym.name.id result = a.sym.name.id == b.sym.name.id
of nkIdent: result = a.ident.id == b.ident.id of nkIdent: result = a.ident.id == b.ident.id
of nkCharLit..nkUInt64Lit: result = a.intVal == b.intVal of nkCharLit..nkUInt64Lit: result = a.intVal == b.intVal
of nkFloatLit..nkFloat64Lit: result = a.floatVal == b.floatVal of nkFloatLit..nkFloat64Lit: result = cast[uint64](a.floatVal) == cast[uint64](b.floatVal)
of nkStrLit..nkTripleStrLit: result = a.strVal == b.strVal of nkStrLit..nkTripleStrLit: result = a.strVal == b.strVal
of nkCommentStmt: result = a.comment == b.comment of nkCommentStmt: result = a.comment == b.comment
of nkEmpty, nkNilLit, nkType: result = true of nkEmpty, nkNilLit, nkType: result = true