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03129c9129
Split the catch-all values.go into one file per concept, each mirrored by its test: distance.go, norm.go, stats.go, product.go, centroid.go, plus the mean methods folded into mean.go and Copy/Dim/Sum into vector.go. Remove values.go, values_test.go, and values_more_test.go so functionality and tests live where developers expect them. Hoist the two 512-dimensional face embeddings shared by the distance, norm, and cosine tests into fixtures_test.go, removing the previous triplication, and decompose the monolithic TestVector into per-concept tests. Close pre-existing coverage gaps in the integer converters and the GeometricMean/HarmonicMean method wrappers, bringing the package to 100% statement coverage. Pure code movement; no behavior change.
32 lines
549 B
Go
32 lines
549 B
Go
package vector
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import "math"
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// Normalize scales the vector to unit length (L2 norm) in place.
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// A zero vector (including an empty one) is left unchanged to avoid
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// a division by zero.
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func (v Vector) Normalize() {
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var sum float64
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for _, f := range v {
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sum += f * f
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}
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if sum == 0 {
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return
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}
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inv := 1 / math.Sqrt(sum)
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for i := range v {
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v[i] *= inv
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}
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}
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// Normalized returns an L2-normalized copy of the vector,
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// leaving the receiver unchanged.
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func (v Vector) Normalized() Vector {
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c := v.Copy()
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c.Normalize()
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return c
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}
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