blob: f119b20707a8bf84c822f4f13b6fa2a36e3ae81e [file] [log] [blame]
// Copyright ©2019 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 testblas
import (
"fmt"
"testing"
"golang.org/x/exp/rand"
"gonum.org/v1/gonum/blas"
)
type Zgemmer interface {
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)
}
func ZgemmTest(t *testing.T, impl Zgemmer) {
for _, tA := range []blas.Transpose{blas.NoTrans, blas.Trans, blas.ConjTrans} {
for _, tB := range []blas.Transpose{blas.NoTrans, blas.Trans, blas.ConjTrans} {
name := transString(tA) + "-" + transString(tB)
t.Run(name, func(t *testing.T) {
for _, m := range []int{0, 1, 2, 5, 10} {
for _, n := range []int{0, 1, 2, 5, 10} {
for _, k := range []int{0, 1, 2, 7, 11} {
zgemmTest(t, impl, tA, tB, m, n, k)
}
}
}
})
}
}
}
func zgemmTest(t *testing.T, impl Zgemmer, tA, tB blas.Transpose, m, n, k int) {
const tol = 1e-13
rnd := rand.New(rand.NewSource(1))
rowA, colA := m, k
if tA != blas.NoTrans {
rowA, colA = k, m
}
rowB, colB := k, n
if tB != blas.NoTrans {
rowB, colB = n, k
}
for _, lda := range []int{max(1, colA), colA + 2} {
for _, ldb := range []int{max(1, colB), colB + 3} {
for _, ldc := range []int{max(1, n), n + 4} {
for _, alpha := range []complex128{0, 1, complex(0.7, -0.9)} {
for _, beta := range []complex128{0, 1, complex(1.3, -1.1)} {
// Allocate the matrix A and fill it with random numbers.
a := make([]complex128, rowA*lda)
for i := range a {
a[i] = rndComplex128(rnd)
}
// Create a copy of A.
aCopy := make([]complex128, len(a))
copy(aCopy, a)
// Allocate the matrix B and fill it with random numbers.
b := make([]complex128, rowB*ldb)
for i := range b {
b[i] = rndComplex128(rnd)
}
// Create a copy of B.
bCopy := make([]complex128, len(b))
copy(bCopy, b)
// Allocate the matrix C and fill it with random numbers.
c := make([]complex128, m*ldc)
for i := range c {
c[i] = rndComplex128(rnd)
}
// Compute the expected result using an internal Zgemm implementation.
want := zmm(tA, tB, m, n, k, alpha, a, lda, b, ldb, beta, c, ldc)
// Compute a result using Zgemm.
impl.Zgemm(tA, tB, m, n, k, alpha, a, lda, b, ldb, beta, c, ldc)
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)
if !zsame(a, aCopy) {
t.Errorf("%v: unexpected modification of A", prefix)
continue
}
if !zsame(b, bCopy) {
t.Errorf("%v: unexpected modification of B", prefix)
continue
}
if !zEqualApprox(c, want, tol) {
t.Errorf("%v: unexpected result,\nwant=%v\ngot =%v\n", prefix, want, c)
}
}
}
}
}
}
}