diff options
Diffstat (limited to 'src/algebra/defintef.spad.pamphlet')
| -rw-r--r-- | src/algebra/defintef.spad.pamphlet | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/algebra/defintef.spad.pamphlet b/src/algebra/defintef.spad.pamphlet index 0253ac93..34eb5e03 100644 --- a/src/algebra/defintef.spad.pamphlet +++ b/src/algebra/defintef.spad.pamphlet @@ -118,7 +118,7 @@ ElementaryFunctionDefiniteIntegration(R, F): Exports == Implementation where -- returns true if a > b, false if a < b, "failed" if can't decide moreThan(a, b) == (r := retractIfCan(a)@Union(F, "failed")) case "failed" => -- infinite - whatInfinity(a) > 0 + positive? whatInfinity(a) (u := retractIfCan(r::F)@Union(Fraction Z, "failed")) case "failed" => "failed" u::Fraction(Z) > b @@ -171,11 +171,11 @@ ElementaryFunctionDefiniteIntegration(R, F): Exports == Implementation where z := (r := retractIfCan(a)@Union(F, "failed")) case "failed" => sign(f, x, a) sign(f, x, r::F, "right") - (b1 := z case Z) and z::Z > 0 => true + (b1 := z case Z) and positive?(z::Z) => true z := (r := retractIfCan(b)@Union(F, "failed")) case "failed" => sign(f, x, b) sign(f, x, r::F, "left") - (b2 := z case Z) and z::Z > 0 => true + (b2 := z case Z) and positive?(z::Z) => true b1 and b2 => ((w := checkFor0(numer f, k, a, b)) case "failed") or (w::B) => "failed" false |