| // 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/floats" |
| ) |
| |
| type Dorglqer interface { |
| Dorgl2er |
| Dorglq(m, n, k int, a []float64, lda int, tau, work []float64, lwork int) |
| } |
| |
| func DorglqTest(t *testing.T, impl Dorglqer) { |
| rnd := rand.New(rand.NewSource(1)) |
| // TODO(btracey): Base tests off of nb and nx. |
| for _, test := range []struct{ m, n, k, lda int }{ |
| {10, 10, 10, 0}, |
| {10, 10, 10, 20}, |
| {10, 30, 10, 0}, |
| {20, 30, 10, 0}, |
| |
| {100, 100, 100, 0}, |
| {100, 100, 50, 0}, |
| {100, 130, 100, 0}, |
| {100, 130, 50, 0}, |
| {100, 100, 100, 150}, |
| {100, 100, 50, 150}, |
| {100, 130, 100, 150}, |
| {100, 130, 50, 150}, |
| |
| {200, 200, 200, 0}, |
| {200, 200, 150, 0}, |
| {200, 230, 200, 0}, |
| {200, 230, 150, 0}, |
| {200, 200, 200, 250}, |
| {200, 200, 150, 250}, |
| {200, 230, 200, 250}, |
| {200, 230, 150, 250}, |
| } { |
| m := test.m |
| n := test.n |
| k := test.k |
| lda := test.lda |
| if lda == 0 { |
| lda = n |
| } |
| a := make([]float64, m*lda) |
| for i := range a { |
| a[i] = rnd.Float64() |
| } |
| work := make([]float64, 1) |
| tau := make([]float64, m) |
| for i := range tau { |
| tau[i] = math.NaN() |
| } |
| // Compute LQ factorization. |
| impl.Dgelqf(m, n, a, lda, tau, work, -1) |
| work = make([]float64, int(work[0])) |
| impl.Dgelqf(m, n, a, lda, tau, work, len(work)) |
| |
| aUnblocked := make([]float64, len(a)) |
| copy(aUnblocked, a) |
| for i := range work { |
| work[i] = math.NaN() |
| } |
| impl.Dorgl2(m, n, k, aUnblocked, lda, tau, work) |
| // make sure work isn't used before initialized |
| for i := range work { |
| work[i] = math.NaN() |
| } |
| impl.Dorglq(m, n, k, a, lda, tau, work, len(work)) |
| if !floats.EqualApprox(a, aUnblocked, 1e-10) { |
| t.Errorf("Q Mismatch. m = %d, n = %d, k = %d, lda = %d", m, n, k, lda) |
| } |
| } |
| } |