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-rw-r--r--src/algebra/oderf.spad.pamphlet2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/algebra/oderf.spad.pamphlet b/src/algebra/oderf.spad.pamphlet
index 87288645..f104bc74 100644
--- a/src/algebra/oderf.spad.pamphlet
+++ b/src/algebra/oderf.spad.pamphlet
@@ -98,7 +98,7 @@ BoundIntegerRoots(F, UP): Exports == Implementation where
-- returns 0 if r is not a negative integer, r otherwise
negint r ==
- ((u := retractIfCan(r)@Union(Z, "failed")) case Z) and (u::Z < 0) => u::Z
+ ((u := retractIfCan(r)@Union(Z, "failed")) case Z) and negative?(u::Z) => u::Z
0
if F has ExpressionSpace then