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// Copyright ©2016 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 c128
import "math/cmplx"
// AxpyUnitary is
//
// for i, v := range x {
// y[i] += alpha * v
// }
func AxpyUnitary(alpha complex128, x, y []complex128) {
for i, v := range x {
y[i] += alpha * v
}
}
// AxpyUnitaryTo is
//
// for i, v := range x {
// dst[i] = alpha*v + y[i]
// }
func AxpyUnitaryTo(dst []complex128, alpha complex128, x, y []complex128) {
for i, v := range x {
dst[i] = alpha*v + y[i]
}
}
// AxpyInc is
//
// for i := 0; i < int(n); i++ {
// y[iy] += alpha * x[ix]
// ix += incX
// iy += incY
// }
func AxpyInc(alpha complex128, x, y []complex128, n, incX, incY, ix, iy uintptr) {
for i := 0; i < int(n); i++ {
y[iy] += alpha * x[ix]
ix += incX
iy += incY
}
}
// AxpyIncTo is
//
// for i := 0; i < int(n); i++ {
// dst[idst] = alpha*x[ix] + y[iy]
// ix += incX
// iy += incY
// idst += incDst
// }
func AxpyIncTo(dst []complex128, incDst, idst uintptr, alpha complex128, x, y []complex128, n, incX, incY, ix, iy uintptr) {
for i := 0; i < int(n); i++ {
dst[idst] = alpha*x[ix] + y[iy]
ix += incX
iy += incY
idst += incDst
}
}
// DscalUnitary is
//
// for i, v := range x {
// x[i] = complex(real(v)*alpha, imag(v)*alpha)
// }
func DscalUnitary(alpha float64, x []complex128) {
for i, v := range x {
x[i] = complex(real(v)*alpha, imag(v)*alpha)
}
}
// DscalInc is
//
// var ix uintptr
// for i := 0; i < int(n); i++ {
// x[ix] = complex(real(x[ix])*alpha, imag(x[ix])*alpha)
// ix += inc
// }
func DscalInc(alpha float64, x []complex128, n, inc uintptr) {
var ix uintptr
for i := 0; i < int(n); i++ {
x[ix] = complex(real(x[ix])*alpha, imag(x[ix])*alpha)
ix += inc
}
}
// ScalInc is
//
// var ix uintptr
// for i := 0; i < int(n); i++ {
// x[ix] *= alpha
// ix += incX
// }
func ScalInc(alpha complex128, x []complex128, n, inc uintptr) {
var ix uintptr
for i := 0; i < int(n); i++ {
x[ix] *= alpha
ix += inc
}
}
// ScalUnitary is
//
// for i := range x {
// x[i] *= alpha
// }
func ScalUnitary(alpha complex128, x []complex128) {
for i := range x {
x[i] *= alpha
}
}
// DotcUnitary is
//
// for i, v := range x {
// sum += y[i] * cmplx.Conj(v)
// }
// return sum
func DotcUnitary(x, y []complex128) (sum complex128) {
for i, v := range x {
sum += y[i] * cmplx.Conj(v)
}
return sum
}
// DotcInc is
//
// for i := 0; i < int(n); i++ {
// sum += y[iy] * cmplx.Conj(x[ix])
// ix += incX
// iy += incY
// }
// return sum
func DotcInc(x, y []complex128, n, incX, incY, ix, iy uintptr) (sum complex128) {
for i := 0; i < int(n); i++ {
sum += y[iy] * cmplx.Conj(x[ix])
ix += incX
iy += incY
}
return sum
}
// DotuUnitary is
//
// for i, v := range x {
// sum += y[i] * v
// }
// return sum
func DotuUnitary(x, y []complex128) (sum complex128) {
for i, v := range x {
sum += y[i] * v
}
return sum
}
// DotuInc is
//
// for i := 0; i < int(n); i++ {
// sum += y[iy] * x[ix]
// ix += incX
// iy += incY
// }
// return sum
func DotuInc(x, y []complex128, n, incX, incY, ix, iy uintptr) (sum complex128) {
for i := 0; i < int(n); i++ {
sum += y[iy] * x[ix]
ix += incX
iy += incY
}
return sum
}
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