diff options
Diffstat (limited to 'src/algebra/interval.spad.pamphlet')
| -rw-r--r-- | src/algebra/interval.spad.pamphlet | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/algebra/interval.spad.pamphlet b/src/algebra/interval.spad.pamphlet index 7fbd9fe8..94eea0f5 100644 --- a/src/algebra/interval.spad.pamphlet +++ b/src/algebra/interval.spad.pamphlet @@ -128,7 +128,7 @@ Interval(R:Join(FloatingPointSystem,TranscendentalFunctionCategory)): IntervalCa contains?(u:%,f:R):Boolean == (f > inf(u)) and (f < sup(u)) - positive?(u:%):Boolean == inf(u) > 0 + positive?(u:%):Boolean == positive? inf(u) negative?(u:%):Boolean == negative? sup(u) a:% < b:% == @@ -161,7 +161,7 @@ Interval(R:Join(FloatingPointSystem,TranscendentalFunctionCategory)): IntervalCa a:Integer * b:% == - if (a > 0) then + if positive? a then qinterval(a*inf(b),a*sup(b)) else if negative? a then qinterval(a*sup(b),a*inf(b)) |