mirror of
https://github.com/gonum/gonum.git
synced 2025-10-06 15:47:01 +08:00
5f0141ca4c
Changes made in dsp/fourier/internal/fftpack break the formatting used there, so these are reverted. There will be complaints in CI. [git-generate] gofmt -w . go generate gonum.org/v1/gonum/blas go generate gonum.org/v1/gonum/blas/gonum go generate gonum.org/v1/gonum/unit go generate gonum.org/v1/gonum/unit/constant go generate gonum.org/v1/gonum/graph/formats/dot go generate gonum.org/v1/gonum/graph/formats/rdf go generate gonum.org/v1/gonum/stat/card git checkout -- dsp/fourier/internal/fftpack
39 lines
743 B
Go
39 lines
743 B
Go
// Copyright ©2015 The Gonum Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
//go:build !amd64 || noasm || gccgo || safe
|
|
// +build !amd64 noasm gccgo safe
|
|
|
|
package f64
|
|
|
|
// DotUnitary is
|
|
//
|
|
// for i, v := range x {
|
|
// sum += y[i] * v
|
|
// }
|
|
// return sum
|
|
func DotUnitary(x, y []float64) (sum float64) {
|
|
for i, v := range x {
|
|
sum += y[i] * v
|
|
}
|
|
return sum
|
|
}
|
|
|
|
// DotInc is
|
|
//
|
|
// for i := 0; i < int(n); i++ {
|
|
// sum += y[iy] * x[ix]
|
|
// ix += incX
|
|
// iy += incY
|
|
// }
|
|
// return sum
|
|
func DotInc(x, y []float64, n, incX, incY, ix, iy uintptr) (sum float64) {
|
|
for i := 0; i < int(n); i++ {
|
|
sum += y[iy] * x[ix]
|
|
ix += incX
|
|
iy += incY
|
|
}
|
|
return sum
|
|
}
|