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Cleaned up Nearest

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btracey
2013-07-26 00:24:40 -07:00
parent 88114f9b39
commit c4b55c36c5
1 changed files with 4 additions and 5 deletions
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9
floats.go
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@@ -235,13 +235,12 @@ func Min(s []float64) (min float64, ind int) {
} }
// Nearest returns the index of the element of s whose value is // Nearest returns the index of the element of s whose value is
// nearest to v. If none of the values are closer than infinitely // nearest to v. If several such indices exist, the lowest index
// far away (all of the values in s are either NaN or Inf, or s // is returned
// has length 0), the index is returned as -1
// TODO: Add test // TODO: Add test
func Nearest(s []float64, v float64) (ind int, dist float64) { func Nearest(s []float64, v float64) (ind int, dist float64) {
dist = math.Inf(1) dist = math.Abs(v - s[0])
ind = -1 ind = 0
for i, val := range s { for i, val := range s {
newDist := math.Abs(v - val) newDist := math.Abs(v - val)
if newDist < dist { if newDist < dist {