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62 lines
1.2 KiB
Go
62 lines
1.2 KiB
Go
// Copyright ©2016 The gonum Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package testlapack
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import (
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"math/rand"
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"testing"
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"github.com/gonum/floats"
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)
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type Dorgqler interface {
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Dorgql(m, n, k int, a []float64, lda int, tau, work []float64, lwork int)
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Dorg2ler
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}
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func DorgqlTest(t *testing.T, impl Dorgqler) {
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rnd := rand.New(rand.NewSource(1))
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for _, test := range []struct {
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m, n, k, lda int
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}{
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{5, 4, 3, 0},
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{100, 100, 100, 0},
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{200, 100, 50, 0},
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{200, 200, 50, 0},
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} {
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m := test.m
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n := test.n
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k := test.k
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lda := test.lda
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if lda == 0 {
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lda = n
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}
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a := make([]float64, m*lda)
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for i := range a {
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a[i] = rnd.NormFloat64()
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}
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tau := nanSlice(min(m, n))
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work := nanSlice(max(m, n))
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impl.Dgeql2(m, n, a, lda, tau, work)
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aCopy := make([]float64, len(a))
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copy(aCopy, a)
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impl.Dorg2l(m, n, k, a, lda, tau, work)
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ans := make([]float64, len(a))
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copy(ans, a)
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impl.Dorgql(m, n, k, a, lda, tau, work, -1)
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work = make([]float64, int(work[0]))
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copy(a, aCopy)
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impl.Dorgql(m, n, k, a, lda, tau, work, len(work))
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if !floats.EqualApprox(a, ans, 1e-8) {
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t.Errorf("Answer mismatch. m = %v, n = %v, k = %v", m, n, k)
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}
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}
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}
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