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