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-rw-r--r--src/algebra/listgcd.spad.pamphlet2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/algebra/listgcd.spad.pamphlet b/src/algebra/listgcd.spad.pamphlet
index 7640aa21..69d50396 100644
--- a/src/algebra/listgcd.spad.pamphlet
+++ b/src/algebra/listgcd.spad.pamphlet
@@ -71,7 +71,7 @@ HeuGcd (BP):C == T
constNotZero(f : BP ) : Boolean == (degree f = 0) and not (zero? f)
negShiftz(n:Z,Modulus:PI):Z ==
- n < 0 => n:= n+Modulus
+ negative? n => n:= n+Modulus
n > (Modulus quo 2) => n-Modulus
n