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105 lines
2.9 KiB
Go
105 lines
2.9 KiB
Go
// Copyright ©2019 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 testblas
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import (
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"fmt"
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"testing"
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"golang.org/x/exp/rand"
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"gonum.org/v1/gonum/blas"
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)
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type Zgemmer interface {
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Zgemm(tA, tB blas.Transpose, m, n, k int, alpha complex128, a []complex128, lda int, b []complex128, ldb int, beta complex128, c []complex128, ldc int)
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}
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func ZgemmTest(t *testing.T, impl Zgemmer) {
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for _, tA := range []blas.Transpose{blas.NoTrans, blas.Trans, blas.ConjTrans} {
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for _, tB := range []blas.Transpose{blas.NoTrans, blas.Trans, blas.ConjTrans} {
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name := transString(tA) + "-" + transString(tB)
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t.Run(name, func(t *testing.T) {
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for _, m := range []int{0, 1, 2, 5, 10} {
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for _, n := range []int{0, 1, 2, 5, 10} {
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for _, k := range []int{0, 1, 2, 7, 11} {
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zgemmTest(t, impl, tA, tB, m, n, k)
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}
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}
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}
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})
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}
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}
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}
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func zgemmTest(t *testing.T, impl Zgemmer, tA, tB blas.Transpose, m, n, k int) {
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const tol = 1e-13
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rnd := rand.New(rand.NewSource(1))
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rowA, colA := m, k
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if tA != blas.NoTrans {
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rowA, colA = k, m
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}
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rowB, colB := k, n
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if tB != blas.NoTrans {
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rowB, colB = n, k
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}
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for _, lda := range []int{max(1, colA), colA + 2} {
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for _, ldb := range []int{max(1, colB), colB + 3} {
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for _, ldc := range []int{max(1, n), n + 4} {
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for _, alpha := range []complex128{0, 1, complex(0.7, -0.9)} {
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for _, beta := range []complex128{0, 1, complex(1.3, -1.1)} {
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// Allocate the matrix A and fill it with random numbers.
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a := make([]complex128, rowA*lda)
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for i := range a {
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a[i] = rndComplex128(rnd)
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}
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// Create a copy of A.
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aCopy := make([]complex128, len(a))
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copy(aCopy, a)
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// Allocate the matrix B and fill it with random numbers.
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b := make([]complex128, rowB*ldb)
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for i := range b {
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b[i] = rndComplex128(rnd)
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}
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// Create a copy of B.
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bCopy := make([]complex128, len(b))
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copy(bCopy, b)
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// Allocate the matrix C and fill it with random numbers.
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c := make([]complex128, m*ldc)
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for i := range c {
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c[i] = rndComplex128(rnd)
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}
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// Compute the expected result using an internal Zgemm implementation.
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want := zmm(tA, tB, m, n, k, alpha, a, lda, b, ldb, beta, c, ldc)
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// Compute a result using Zgemm.
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impl.Zgemm(tA, tB, m, n, k, alpha, a, lda, b, ldb, beta, c, ldc)
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prefix := fmt.Sprintf("m=%v,n=%v,k=%v,lda=%v,ldb=%v,ldc=%v,alpha=%v,beta=%v", m, n, k, lda, ldb, ldc, alpha, beta)
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if !zsame(a, aCopy) {
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t.Errorf("%v: unexpected modification of A", prefix)
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continue
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}
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if !zsame(b, bCopy) {
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t.Errorf("%v: unexpected modification of B", prefix)
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continue
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}
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if !zEqualApprox(c, want, tol) {
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t.Errorf("%v: unexpected result,\nwant=%v\ngot =%v\n", prefix, want, c)
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}
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}
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}
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}
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}
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}
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}
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