mirror of
https://github.com/gonum/gonum.git
synced 2025-10-31 18:42:45 +08:00
84 lines
1.9 KiB
Go
84 lines
1.9 KiB
Go
// 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"
|
|
"math/rand"
|
|
"testing"
|
|
|
|
"gonum.org/v1/gonum/floats"
|
|
)
|
|
|
|
type Dorgqrer interface {
|
|
Dorg2rer
|
|
Dorgqr(m, n, k int, a []float64, lda int, tau, work []float64, lwork int)
|
|
}
|
|
|
|
func DorgqrTest(t *testing.T, impl Dorgqrer) {
|
|
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},
|
|
{30, 10, 10, 0},
|
|
{30, 20, 10, 20},
|
|
|
|
{100, 100, 100, 0},
|
|
{100, 100, 50, 0},
|
|
{130, 100, 100, 0},
|
|
{130, 100, 50, 0},
|
|
{100, 100, 100, 150},
|
|
{100, 100, 50, 150},
|
|
{130, 100, 100, 150},
|
|
{130, 100, 50, 150},
|
|
|
|
{200, 200, 200, 0},
|
|
{200, 200, 150, 0},
|
|
{230, 200, 200, 0},
|
|
{230, 200, 150, 0},
|
|
{200, 200, 200, 250},
|
|
{200, 200, 150, 250},
|
|
{230, 200, 200, 250},
|
|
{230, 200, 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, n)
|
|
for i := range tau {
|
|
tau[i] = math.NaN()
|
|
}
|
|
// Compute QR factorization.
|
|
impl.Dgeqrf(m, n, a, lda, tau, work, -1)
|
|
work = make([]float64, int(work[0]))
|
|
impl.Dgeqrf(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.Dorg2r(m, n, k, aUnblocked, lda, tau, work)
|
|
// make sure work isn't used before initialized
|
|
for i := range work {
|
|
work[i] = math.NaN()
|
|
}
|
|
impl.Dorgqr(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)
|
|
}
|
|
}
|
|
}
|