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| author | Gabriel Dos Reis <gdr@axiomatics.org> | 2016-01-17 22:53:01 -0800 |
|---|---|---|
| committer | Gabriel Dos Reis <gdr@axiomatics.org> | 2016-01-17 22:53:01 -0800 |
| commit | d07fc9735f40e545edda456e15dbab783c500f6a (patch) | |
| tree | 4d9fab82a7085b73a4b00d23389935503fdfc90d /src/algebra/integer.spad.pamphlet | |
| parent | 5437d438937eb25eb320fef6e4fd6ebc91ca6dc9 (diff) | |
| download | open-axiom-d07fc9735f40e545edda456e15dbab783c500f6a.tar.gz | |
subtractIfCan$CancellationAbelianMonoid: return the more principled Maybe %
Diffstat (limited to 'src/algebra/integer.spad.pamphlet')
| -rw-r--r-- | src/algebra/integer.spad.pamphlet | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/algebra/integer.spad.pamphlet b/src/algebra/integer.spad.pamphlet index a91b6d63..fde8ef88 100644 --- a/src/algebra/integer.spad.pamphlet +++ b/src/algebra/integer.spad.pamphlet @@ -251,8 +251,8 @@ NonNegativeInteger: Join(OrderedAbelianMonoidSup,Monoid) with shift(x:%, n:Integer):% == ASH(x,n)$Lisp subtractIfCan(x, y) == c:Integer := rep x - rep y - negative? c => "failed" - per c + negative? c => nothing + just per c @ |