diff options
Diffstat (limited to 'src/algebra/sum.spad.pamphlet')
| -rw-r--r-- | src/algebra/sum.spad.pamphlet | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/algebra/sum.spad.pamphlet b/src/algebra/sum.spad.pamphlet index e3d66075..aa5ae39f 100644 --- a/src/algebra/sum.spad.pamphlet +++ b/src/algebra/sum.spad.pamphlet @@ -269,13 +269,13 @@ GosperSummationMethod(E, V, R, P, Q): Exports == Impl where linearAndNNIntRoot(mp, v) == p := univariate(mp, v) - degree p ~= 1 => "failed" + not one? degree p => "failed" (p1 := retractIfCan(coefficient(p, 1))@Union(RN,"failed")) case "failed" or (p0 := retractIfCan(coefficient(p, 0))@Union(RN,"failed")) case "failed" => "failed" rt := -(p0::RN)/(p1::RN) - negative? rt or denom rt ~= 1 => "failed" + negative? rt or not one? denom rt => "failed" numer rt @ |