+++ /dev/null
-// 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 (
- "testing"
-
- "golang.org/x/exp/rand"
-
- "gonum.org/v1/gonum/floats"
-)
-
-type Dgelqfer interface {
- Dgelq2er
- Dgelqf(m, n int, a []float64, lda int, tau, work []float64, lwork int)
-}
-
-func DgelqfTest(t *testing.T, impl Dgelqfer) {
- rnd := rand.New(rand.NewSource(1))
- for c, test := range []struct {
- m, n, lda int
- }{
- {10, 5, 0},
- {5, 10, 0},
- {10, 10, 0},
- {300, 5, 0},
- {3, 500, 0},
- {200, 200, 0},
- {300, 200, 0},
- {204, 300, 0},
- {1, 3000, 0},
- {3000, 1, 0},
- {10, 5, 30},
- {5, 10, 30},
- {10, 10, 30},
- {300, 5, 500},
- {3, 500, 600},
- {200, 200, 300},
- {300, 200, 300},
- {204, 300, 400},
- {1, 3000, 4000},
- {3000, 1, 4000},
- } {
- m := test.m
- n := test.n
- lda := test.lda
- if lda == 0 {
- lda = n
- }
- a := make([]float64, m*lda)
- for i := 0; i < m; i++ {
- for j := 0; j < n; j++ {
- a[i*lda+j] = rnd.Float64()
- }
- }
- tau := make([]float64, n)
- for i := 0; i < n; i++ {
- tau[i] = rnd.Float64()
- }
- aCopy := make([]float64, len(a))
- copy(aCopy, a)
- ans := make([]float64, len(a))
- copy(ans, a)
- work := make([]float64, m)
- for i := range work {
- work[i] = rnd.Float64()
- }
- // Compute unblocked QR.
- impl.Dgelq2(m, n, ans, lda, tau, work)
- // Compute blocked QR with small work.
- impl.Dgelqf(m, n, a, lda, tau, work, len(work))
- if !floats.EqualApprox(ans, a, 1e-12) {
- t.Errorf("Case %v, mismatch small work.", c)
- }
- // Try the full length of work.
- impl.Dgelqf(m, n, a, lda, tau, work, -1)
- lwork := int(work[0])
- work = make([]float64, lwork)
- copy(a, aCopy)
- impl.Dgelqf(m, n, a, lda, tau, work, lwork)
- if !floats.EqualApprox(ans, a, 1e-12) {
- t.Errorf("Case %v, mismatch large work.", c)
- }
-
- // Try a slightly smaller version of work to test blocking code.
- if len(work) <= m {
- continue
- }
- work = work[1:]
- lwork--
- copy(a, aCopy)
- impl.Dgelqf(m, n, a, lda, tau, work, lwork)
- if !floats.EqualApprox(ans, a, 1e-12) {
- t.Errorf("Case %v, mismatch large work.", c)
- }
- }
-}