diff options
Diffstat (limited to 'src/algebra/opalg.spad.pamphlet')
| -rw-r--r-- | src/algebra/opalg.spad.pamphlet | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/algebra/opalg.spad.pamphlet b/src/algebra/opalg.spad.pamphlet index 759f9136..4c7a08fe 100644 --- a/src/algebra/opalg.spad.pamphlet +++ b/src/algebra/opalg.spad.pamphlet @@ -103,7 +103,7 @@ ModuleOperator(R: Ring, M:LeftModule(R)): Exports == Implementation where x:$ ** i:Integer == i = 0 => 1 - i > 0 => expt(x,i pretend PositiveInteger)$RepeatedSquaring($) + positive? i => expt(x,i pretend PositiveInteger)$RepeatedSquaring($) (inv(retract(x)@TERM)) ** (-i) evaluateInverse(f, g) == @@ -171,7 +171,7 @@ ModuleOperator(R: Ring, M:LeftModule(R)): Exports == Implementation where for rec in reverse! factors m repeat e := rec.exp g := rec.gen - e > 0 => + positive? e => for i in 1..e repeat r := opeval(g, r) negative? e => for i in 1..(-e) repeat r := opInvEval(g, r) |