Thanos did someting

[bytom/vapor.git] / vendor / gonum.org / v1 / gonum / lapack / testlapack / dorghr.go

diff --git a/vendor/gonum.org/v1/gonum/lapack/testlapack/dorghr.go b/vendor/gonum.org/v1/gonum/lapack/testlapack/dorghr.go
deleted file mode 100644 (file)
index 50bd6b9..0000000
--- a/vendor/gonum.org/v1/gonum/lapack/testlapack/dorghr.go
+++ /dev/null
@@ -1,100 +0,0 @@
-// 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.
-
-package testlapack
-
-import (
-       "fmt"
-       "math"
-       "testing"
-
-       "golang.org/x/exp/rand"
-
-       "gonum.org/v1/gonum/blas"
-       "gonum.org/v1/gonum/blas/blas64"
-)
-
-type Dorghrer interface {
-       Dorghr(n, ilo, ihi int, a []float64, lda int, tau, work []float64, lwork int)
-
-       Dgehrder
-}
-
-func DorghrTest(t *testing.T, impl Dorghrer) {
-       rnd := rand.New(rand.NewSource(1))
-
-       for _, n := range []int{1, 2, 3, 4, 5, 6, 7, 8, 23, 34} {
-               for _, extra := range []int{0, 1, 13} {
-                       for _, optwork := range []bool{true, false} {
-                               for cas := 0; cas < 100; cas++ {
-                                       ilo := rnd.Intn(n)
-                                       ihi := rnd.Intn(n)
-                                       if ilo > ihi {
-                                               ilo, ihi = ihi, ilo
-                                       }
-                                       testDorghr(t, impl, n, ilo, ihi, extra, optwork, rnd)
-                               }
-                       }
-               }
-       }
-       testDorghr(t, impl, 0, 0, -1, 0, false, rnd)
-       testDorghr(t, impl, 0, 0, -1, 0, true, rnd)
-}
-
-func testDorghr(t *testing.T, impl Dorghrer, n, ilo, ihi, extra int, optwork bool, rnd *rand.Rand) {
-       const tol = 1e-14
-
-       // Construct the matrix A with elementary reflectors and scalar factors tau.
-       a := randomGeneral(n, n, n+extra, rnd)
-       var tau []float64
-       if n > 1 {
-               tau = nanSlice(n - 1)
-       }
-       work := nanSlice(max(1, n)) // Minimum work for Dgehrd.
-       impl.Dgehrd(n, ilo, ihi, a.Data, a.Stride, tau, work, len(work))
-
-       // Extract Q for later comparison.
-       q := eye(n, n)
-       qCopy := cloneGeneral(q)
-       for j := ilo; j < ihi; j++ {
-               h := eye(n, n)
-               v := blas64.Vector{
-                       Inc:  1,
-                       Data: make([]float64, n),
-               }
-               v.Data[j+1] = 1
-               for i := j + 2; i < ihi+1; i++ {
-                       v.Data[i] = a.Data[i*a.Stride+j]
-               }
-               blas64.Ger(-tau[j], v, v, h)
-               copy(qCopy.Data, q.Data)
-               blas64.Gemm(blas.NoTrans, blas.NoTrans, 1, qCopy, h, 0, q)
-       }
-
-       if optwork {
-               work = nanSlice(1)
-               impl.Dorghr(n, ilo, ihi, a.Data, a.Stride, tau, work, -1)
-               work = nanSlice(int(work[0]))
-       } else {
-               work = nanSlice(max(1, ihi-ilo))
-       }
-       impl.Dorghr(n, ilo, ihi, a.Data, a.Stride, tau, work, len(work))
-
-       prefix := fmt.Sprintf("Case n=%v, ilo=%v, ihi=%v, extra=%v, optwork=%v", n, ilo, ihi, extra, optwork)
-       if !generalOutsideAllNaN(a) {
-               t.Errorf("%v: out-of-range write to A\n%v", prefix, a.Data)
-       }
-       if !isOrthonormal(a) {
-               t.Errorf("%v: A is not orthogonal\n%v", prefix, a.Data)
-       }
-       for i := 0; i < n; i++ {
-               for j := 0; j < n; j++ {
-                       aij := a.Data[i*a.Stride+j]
-                       qij := q.Data[i*q.Stride+j]
-                       if math.Abs(aij-qij) > tol {
-                               t.Errorf("%v: unexpected value of A[%v,%v]. want %v, got %v", prefix, i, j, qij, aij)
-                       }
-               }
-       }
-}