diff options
Diffstat (limited to 'src/algebra/rdeef.spad.pamphlet')
| -rw-r--r-- | src/algebra/rdeef.spad.pamphlet | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/algebra/rdeef.spad.pamphlet b/src/algebra/rdeef.spad.pamphlet index e9aa2e67..c7d5e368 100644 --- a/src/algebra/rdeef.spad.pamphlet +++ b/src/algebra/rdeef.spad.pamphlet @@ -467,7 +467,7 @@ ElementaryRischDE(R, F): Exports == Implementation where answr:UP := 0 repeat zero? c => return answr - (n < 0) or ((m := degree c)::Z > n) => return "failed" + negative? n or ((m := degree c)::Z > n) => return "failed" u := rischDE(1, f, leadingCoefficient c, x, limitedint, extint) ~u.sol? => return "failed" zero? m => return(answr + u.ans::UP) @@ -502,7 +502,7 @@ ElementaryRischDE(R, F): Exports == Implementation where answr:UP := 0 repeat zero? c => return answr - (n < 0) or ((m := degree c)::Z > n) => return "failed" + negative? n or ((m := degree c)::Z > n) => return "failed" u := rischDE(1, f + m * eta, leadingCoefficient c, x,limitedint,extint) ~u.sol? => return "failed" zero? m => return(answr + u.ans::UP) |