| // 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. |
| |
| // +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 |
| } |
| } |
