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-rw-r--r--src/algebra/limitps.spad.pamphlet4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/algebra/limitps.spad.pamphlet b/src/algebra/limitps.spad.pamphlet
index 9e8b3b53..faf927cc 100644
--- a/src/algebra/limitps.spad.pamphlet
+++ b/src/algebra/limitps.spad.pamphlet
@@ -608,7 +608,7 @@ ElementaryFunctionSign(R,F): Exports == Implementation where
--abort if there are any variables
not empty? variables f => "failed"
-- abort in the presence of algebraic numbers
- member?(coerce("rootOf")::Symbol,map(name,operators f)$ListFunctions2(BasicOperator,Symbol)) => "failed"
+ member?('rootOf,map(name,operators f)$ListFunctions2(BasicOperator,Symbol)) => "failed"
-- In the last resort try interval evaluation where feasible.
if R has ConvertibleTo Float then
import Interval(Float)
@@ -726,6 +726,8 @@ ElementaryFunctionSign(R,F): Exports == Implementation where
<<license>>=
--Copyright (c) 1991-2002, The Numerical ALgorithms Group Ltd.
--All rights reserved.
+--Copyright (C) 2007-2009, Gabriel Dos Reis.
+--All rights reserved.
--
--Redistribution and use in source and binary forms, with or without
--modification, are permitted provided that the following conditions are