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Remove unnecessary intermediate var

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kortschak
2014-12-27 09:01:35 +10:30
parent 37fb643151
commit 650327e533
1 changed files with 2 additions and 3 deletions
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5
covariancematrix.go
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@@ -45,7 +45,7 @@ func CovarianceMatrix(cov *mat64.Dense, x mat64.Matrix, wts []float64) *mat64.De
var xc mat64.Dense var xc mat64.Dense
xc.TCopy(&xt) xc.TCopy(&xt)
var n, scale float64 var n float64
if wts != nil { if wts != nil {
if wr := len(wts); wr != r { if wr := len(wts); wr != r {
panic(mat64.ErrShape) panic(mat64.ErrShape)
@@ -66,8 +66,7 @@ func CovarianceMatrix(cov *mat64.Dense, x mat64.Matrix, wts []float64) *mat64.De
cov.Mul(&xt, &xc) cov.Mul(&xt, &xc)
// Scale by the sample size. // Scale by the sample size.
scale = 1 / (n - 1) cov.Scale(1/(n-1), cov)
cov.Scale(scale, cov)
return cov return cov
} }