1// Copyright ©2015 The Gonum Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style 3// license that can be found in the LICENSE file. 4 5// +build !amd64 noasm appengine safe 6 7package f64 8 9// AxpyUnitary is 10// for i, v := range x { 11// y[i] += alpha * v 12// } 13func AxpyUnitary(alpha float64, x, y []float64) { 14 for i, v := range x { 15 y[i] += alpha * v 16 } 17} 18 19// AxpyUnitaryTo is 20// for i, v := range x { 21// dst[i] = alpha*v + y[i] 22// } 23func AxpyUnitaryTo(dst []float64, alpha float64, x, y []float64) { 24 for i, v := range x { 25 dst[i] = alpha*v + y[i] 26 } 27} 28 29// AxpyInc is 30// for i := 0; i < int(n); i++ { 31// y[iy] += alpha * x[ix] 32// ix += incX 33// iy += incY 34// } 35func AxpyInc(alpha float64, x, y []float64, n, incX, incY, ix, iy uintptr) { 36 for i := 0; i < int(n); i++ { 37 y[iy] += alpha * x[ix] 38 ix += incX 39 iy += incY 40 } 41} 42 43// AxpyIncTo is 44// for i := 0; i < int(n); i++ { 45// dst[idst] = alpha*x[ix] + y[iy] 46// ix += incX 47// iy += incY 48// idst += incDst 49// } 50func AxpyIncTo(dst []float64, incDst, idst uintptr, alpha float64, x, y []float64, n, incX, incY, ix, iy uintptr) { 51 for i := 0; i < int(n); i++ { 52 dst[idst] = alpha*x[ix] + y[iy] 53 ix += incX 54 iy += incY 55 idst += incDst 56 } 57} 58