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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 f64
// ScalUnitary is
//
// for i := range x {
// x[i] *= alpha
// }
func ScalUnitary(alpha float64, x []float64) {
for i := range x {
x[i] *= alpha
}
}
// ScalUnitaryTo is
//
// for i, v := range x {
// dst[i] = alpha * v
// }
func ScalUnitaryTo(dst []float64, alpha float64, x []float64) {
for i, v := range x {
dst[i] = alpha * v
}
}
// ScalInc is
//
// var ix uintptr
// for i := 0; i < int(n); i++ {
// x[ix] *= alpha
// ix += incX
// }
func ScalInc(alpha float64, x []float64, n, incX uintptr) {
var ix uintptr
for i := 0; i < int(n); i++ {
x[ix] *= alpha
ix += incX
}
}
// ScalIncTo is
//
// var idst, ix uintptr
// for i := 0; i < int(n); i++ {
// dst[idst] = alpha * x[ix]
// ix += incX
// idst += incDst
// }
func ScalIncTo(dst []float64, incDst uintptr, alpha float64, x []float64, n, incX uintptr) {
var idst, ix uintptr
for i := 0; i < int(n); i++ {
dst[idst] = alpha * x[ix]
ix += incX
idst += incDst
}
}
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