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-rw-r--r--src/algebra/sf.spad.pamphlet2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/algebra/sf.spad.pamphlet b/src/algebra/sf.spad.pamphlet
index bfd30d62..1faaffe7 100644
--- a/src/algebra/sf.spad.pamphlet
+++ b/src/algebra/sf.spad.pamphlet
@@ -98,7 +98,7 @@ RealNumberSystem(): Category ==
floor x ==
x1 := (wholePart x) :: %
x = x1 => x
- x < 0 => (x1 - 1)
+ negative? x => (x1 - 1)
x1
ceiling x ==