mat: remove dead code in overlap testing
This should have been removed in b525d7 when the code was switched to
rectangular.
@@ -89,51 +89,6 @@ func intervalsOverlap(a, b interval) bool {
return a.to > b.from && b.to > a.from
}
-func overlapsParentTriangle(i, j, n int, parent, view TriKind) bool {
- switch parent {
- case Upper:
- if i <= j {
- return true
- }
- if view == Upper {
- return i < j+n
- }
-
- case Lower:
- if i >= j {
- return true
- }
- if view == Lower {
- return i+n > j
- }
- }
-
- return false
-}
-
-func overlapSiblingTriangles(ai, aj, an int, aKind TriKind, bi, bj, bn int, bKind TriKind) bool {
- for i := max(ai, bi); i < min(ai+an, bi+bn); i++ {
- var a, b interval
-
- if aKind == Upper {
- a = interval{from: aj - ai + i, to: aj + an}
- } else {
- a = interval{from: aj, to: aj - ai + i + 1}
- }
-
- if bKind == Upper {
- b = interval{from: bj - bi + i, to: bj + bn}
- } else {
- b = interval{from: bj, to: bj - bi + i + 1}
- }
-
- if intervalsOverlap(a, b) {
- return true
- }
- }
- return false
-}
-
// See https://github.com/gonum/matrix/issues/359 for details.
func TestIssue359(t *testing.T) {
for xi := 0; xi < 2; xi++ {
