1 // Copyright ©2017 The Gonum Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
12 type Zdotuer interface {
13 Zdotu(n int, x []complex128, incX int, y []complex128, incY int) complex128
16 func ZdotuTest(t *testing.T, impl Zdotuer) {
17 for tc, test := range []struct {
20 want complex128 // Result when both increments have the same sign.
21 wantRev complex128 // Result when the increments have opposite sign.
30 x: []complex128{1 + 2i},
31 y: []complex128{30 + 31i},
36 x: []complex128{1 + 2i, 3 + 4i},
37 y: []complex128{30 + 31i, 33 + 34i},
42 x: []complex128{1 + 2i, 3 + 4i, 5 + 6i},
43 y: []complex128{30 + 31i, 33 + 34i, 36 + 37i},
48 x: []complex128{1 + 2i, 3 + 4i, 5 + 6i, 7 + 8i},
49 y: []complex128{30 + 31i, 33 + 34i, 36 + 37i, 39 + 40i},
51 wantRev: -158 + 1198i,
54 x: []complex128{1 + 2i, 3 + 4i, 5 + 6i, 7 + 8i, 9 + 10i},
55 y: []complex128{30 + 31i, 33 + 34i, 36 + 37i, 39 + 40i, 42 + 43i},
57 wantRev: -210 + 1885i,
60 x: []complex128{1 + 2i, 3 + 4i, 5 + 6i, 7 + 8i, 9 + 10i, 11 + 12i},
61 y: []complex128{30 + 31i, 33 + 34i, 36 + 37i, 39 + 40i, 42 + 43i, 45 + 46i},
63 wantRev: -267 + 2751i,
66 x: []complex128{1 + 2i, 3 + 4i, 5 + 6i, 7 + 8i, 9 + 10i, 11 + 12i, 13 + 14i},
67 y: []complex128{30 + 31i, 33 + 34i, 36 + 37i, 39 + 40i, 42 + 43i, 45 + 46i, 48 + 49i},
69 wantRev: -329 + 3808i,
72 x: []complex128{1 + 2i, 3 + 4i, 5 + 6i, 7 + 8i, 9 + 10i, 11 + 12i, 13 + 14i, 15 + 16i},
73 y: []complex128{30 + 31i, 33 + 34i, 36 + 37i, 39 + 40i, 42 + 43i, 45 + 46i, 48 + 49i, 51 + 52i},
75 wantRev: -396 + 5068i,
78 x: []complex128{1 + 2i, 3 + 4i, 5 + 6i, 7 + 8i, 9 + 10i, 11 + 12i, 13 + 14i, 15 + 16i, 17 + 18i},
79 y: []complex128{30 + 31i, 33 + 34i, 36 + 37i, 39 + 40i, 42 + 43i, 45 + 46i, 48 + 49i, 51 + 52i, 54 + 55i},
81 wantRev: -468 + 6543i,
84 x: []complex128{1 + 2i, 3 + 4i, 5 + 6i, 7 + 8i, 9 + 10i, 11 + 12i, 13 + 14i, 15 + 16i, 17 + 18i, 19 + 20i},
85 y: []complex128{30 + 31i, 33 + 34i, 36 + 37i, 39 + 40i, 42 + 43i, 45 + 46i, 48 + 49i, 51 + 52i, 54 + 55i, 57 + 58i},
87 wantRev: -545 + 8245i,
90 x: []complex128{1 + 2i, 3 + 4i, 5 + 6i, 7 + 8i, 9 + 10i, 11 + 12i, 13 + 14i, 15 + 16i, 17 + 18i, 19 + 20i, 21 + 22i},
91 y: []complex128{30 + 31i, 33 + 34i, 36 + 37i, 39 + 40i, 42 + 43i, 45 + 46i, 48 + 49i, 51 + 52i, 54 + 55i, 57 + 58i, 60 + 61i},
93 wantRev: -627 + 10186i,
96 x: []complex128{1 + 2i, 3 + 4i, 5 + 6i, 7 + 8i, 9 + 10i, 11 + 12i, 13 + 14i, 15 + 16i, 17 + 18i, 19 + 20i, 21 + 22i, 23 + 24i},
97 y: []complex128{30 + 31i, 33 + 34i, 36 + 37i, 39 + 40i, 42 + 43i, 45 + 46i, 48 + 49i, 51 + 52i, 54 + 55i, 57 + 58i, 60 + 61i, 63 + 64i},
99 wantRev: -714 + 12378i,
103 if len(test.y) != n {
106 for _, inc := range allPairs([]int{-7, -3, 1, 13}, []int{-11, -5, 1, 17}) {
110 x := makeZVector(test.x, incX)
111 xCopy := make([]complex128, len(x))
114 y := makeZVector(test.y, incY)
115 yCopy := make([]complex128, len(y))
123 got := impl.Zdotu(n, x, incX, y, incY)
125 prefix := fmt.Sprintf("Case %v (incX=%v,incY=%v):", tc, incX, incY)
127 if !zsame(x, xCopy) {
128 t.Errorf("%v: unexpected modification of x", prefix)
130 if !zsame(y, yCopy) {
131 t.Errorf("%v: unexpected modification of y", prefix)
135 t.Errorf("%v: unexpected result. want %v, got %v", prefix, want, got)