Thanos did someting

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

diff --git a/vendor/gonum.org/v1/gonum/lapack/testlapack/dlange.go b/vendor/gonum.org/v1/gonum/lapack/testlapack/dlange.go
deleted file mode 100644 (file)
index ad69e04..0000000
--- a/vendor/gonum.org/v1/gonum/lapack/testlapack/dlange.go
+++ /dev/null
@@ -1,94 +0,0 @@
-// 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.
-
-package testlapack
-
-import (
-       "math"
-       "testing"
-
-       "golang.org/x/exp/rand"
-
-       "gonum.org/v1/gonum/blas/blas64"
-       "gonum.org/v1/gonum/lapack"
-)
-
-type Dlanger interface {
-       Dlange(norm lapack.MatrixNorm, m, n int, a []float64, lda int, work []float64) float64
-}
-
-func DlangeTest(t *testing.T, impl Dlanger) {
-       rnd := rand.New(rand.NewSource(1))
-       for _, test := range []struct {
-               m, n, lda int
-       }{
-               {4, 3, 0},
-               {3, 4, 0},
-               {4, 3, 100},
-               {3, 4, 100},
-       } {
-               m := test.m
-               n := test.n
-               lda := test.lda
-               if lda == 0 {
-                       lda = n
-               }
-               a := make([]float64, m*lda)
-               for i := range a {
-                       a[i] = rnd.Float64() - 0.5
-               }
-               work := make([]float64, n)
-               for i := range work {
-                       work[i] = rnd.Float64()
-               }
-               aCopy := make([]float64, len(a))
-               copy(aCopy, a)
-
-               // Test MaxAbs norm.
-               norm := impl.Dlange(lapack.MaxAbs, m, n, a, lda, work)
-               var ans float64
-               for i := 0; i < m; i++ {
-                       idx := blas64.Iamax(n, blas64.Vector{Inc: 1, Data: aCopy[i*lda:]})
-                       ans = math.Max(ans, math.Abs(a[i*lda+idx]))
-               }
-               // Should be strictly equal because there is no floating point summation error.
-               if ans != norm {
-                       t.Errorf("MaxAbs mismatch. Want %v, got %v.", ans, norm)
-               }
-
-               // Test MaxColumnSum norm.
-               norm = impl.Dlange(lapack.MaxColumnSum, m, n, a, lda, work)
-               ans = 0
-               for i := 0; i < n; i++ {
-                       sum := blas64.Asum(m, blas64.Vector{Inc: lda, Data: aCopy[i:]})
-                       ans = math.Max(ans, sum)
-               }
-               if math.Abs(norm-ans) > 1e-14 {
-                       t.Errorf("MaxColumnSum mismatch. Want %v, got %v.", ans, norm)
-               }
-
-               // Test MaxRowSum norm.
-               norm = impl.Dlange(lapack.MaxRowSum, m, n, a, lda, work)
-               ans = 0
-               for i := 0; i < m; i++ {
-                       sum := blas64.Asum(n, blas64.Vector{Inc: 1, Data: aCopy[i*lda:]})
-                       ans = math.Max(ans, sum)
-               }
-               if math.Abs(norm-ans) > 1e-14 {
-                       t.Errorf("MaxRowSum mismatch. Want %v, got %v.", ans, norm)
-               }
-
-               // Test Frobenius norm
-               norm = impl.Dlange(lapack.NormFrob, m, n, a, lda, work)
-               ans = 0
-               for i := 0; i < m; i++ {
-                       sum := blas64.Nrm2(n, blas64.Vector{Inc: 1, Data: aCopy[i*lda:]})
-                       ans += sum * sum
-               }
-               ans = math.Sqrt(ans)
-               if math.Abs(norm-ans) > 1e-14 {
-                       t.Errorf("NormFrob mismatch. Want %v, got %v.", ans, norm)
-               }
-       }
-}