+++ /dev/null
-// Copyright ©2016 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 f64
-
-import "testing"
-
-func TestL1Norm(t *testing.T) {
- var src_gd float64 = 1
- for j, v := range []struct {
- want float64
- x []float64
- }{
- {want: 0, x: []float64{}},
- {want: 2, x: []float64{2}},
- {want: 6, x: []float64{1, 2, 3}},
- {want: 6, x: []float64{-1, -2, -3}},
- {want: nan, x: []float64{nan}},
- {want: 40, x: []float64{8, -8, 8, -8, 8}},
- {want: 5, x: []float64{0, 1, 0, -1, 0, 1, 0, -1, 0, 1}},
- } {
- g_ln := 4 + j%2
- v.x = guardVector(v.x, src_gd, g_ln)
- src := v.x[g_ln : len(v.x)-g_ln]
- ret := L1Norm(src)
- if !same(ret, v.want) {
- t.Errorf("Test %d L1Norm error Got: %f Expected: %f", j, ret, v.want)
- }
- if !isValidGuard(v.x, src_gd, g_ln) {
- t.Errorf("Test %d Guard violated in src vector %v %v", j, v.x[:g_ln], v.x[len(v.x)-g_ln:])
- }
- }
-}
-
-func TestL1NormInc(t *testing.T) {
- var src_gd float64 = 1
- for j, v := range []struct {
- inc int
- want float64
- x []float64
- }{
- {inc: 2, want: 0, x: []float64{}},
- {inc: 3, want: 2, x: []float64{2}},
- {inc: 10, want: 6, x: []float64{1, 2, 3}},
- {inc: 5, want: 6, x: []float64{-1, -2, -3}},
- {inc: 3, want: nan, x: []float64{nan}},
- {inc: 15, want: 40, x: []float64{8, -8, 8, -8, 8}},
- {inc: 1, want: 5, x: []float64{0, 1, 0, -1, 0, 1, 0, -1, 0, 1}},
- } {
- g_ln, ln := 4+j%2, len(v.x)
- v.x = guardIncVector(v.x, src_gd, v.inc, g_ln)
- src := v.x[g_ln : len(v.x)-g_ln]
- ret := L1NormInc(src, ln, v.inc)
- if !same(ret, v.want) {
- t.Errorf("Test %d L1NormInc error Got: %f Expected: %f", j, ret, v.want)
- }
- checkValidIncGuard(t, v.x, src_gd, v.inc, g_ln)
- }
-}
-
-func TestAdd(t *testing.T) {
- var src_gd, dst_gd float64 = 1, 0
- for j, v := range []struct {
- dst, src, expect []float64
- }{
- {
- dst: []float64{1},
- src: []float64{0},
- expect: []float64{1},
- },
- {
- dst: []float64{1, 2, 3},
- src: []float64{1},
- expect: []float64{2, 2, 3},
- },
- {
- dst: []float64{},
- src: []float64{},
- expect: []float64{},
- },
- {
- dst: []float64{1},
- src: []float64{nan},
- expect: []float64{nan},
- },
- {
- dst: []float64{8, 8, 8, 8, 8},
- src: []float64{2, 4, nan, 8, 9},
- expect: []float64{10, 12, nan, 16, 17},
- },
- {
- dst: []float64{0, 1, 2, 3, 4},
- src: []float64{-inf, 4, nan, 8, 9},
- expect: []float64{-inf, 5, nan, 11, 13},
- },
- {
- dst: make([]float64, 50)[1:49],
- src: make([]float64, 50)[1:49],
- expect: make([]float64, 50)[1:49],
- },
- } {
- sg_ln, dg_ln := 4+j%2, 4+j%3
- v.src, v.dst = guardVector(v.src, src_gd, sg_ln), guardVector(v.dst, dst_gd, dg_ln)
- src, dst := v.src[sg_ln:len(v.src)-sg_ln], v.dst[dg_ln:len(v.dst)-dg_ln]
- Add(dst, src)
- for i := range v.expect {
- if !same(dst[i], v.expect[i]) {
- t.Errorf("Test %d Add error at %d Got: %v Expected: %v", j, i, dst[i], v.expect[i])
- }
- }
- if !isValidGuard(v.src, src_gd, sg_ln) {
- t.Errorf("Test %d Guard violated in src vector %v %v", j, v.src[:sg_ln], v.src[len(v.src)-sg_ln:])
- }
- if !isValidGuard(v.dst, dst_gd, dg_ln) {
- t.Errorf("Test %d Guard violated in dst vector %v %v", j, v.dst[:dg_ln], v.dst[len(v.dst)-dg_ln:])
- }
- }
-}
-
-func TestAddConst(t *testing.T) {
- var src_gd float64 = 0
- for j, v := range []struct {
- alpha float64
- src, expect []float64
- }{
- {
- alpha: 1,
- src: []float64{0},
- expect: []float64{1},
- },
- {
- alpha: 5,
- src: []float64{},
- expect: []float64{},
- },
- {
- alpha: 1,
- src: []float64{nan},
- expect: []float64{nan},
- },
- {
- alpha: 8,
- src: []float64{2, 4, nan, 8, 9},
- expect: []float64{10, 12, nan, 16, 17},
- },
- {
- alpha: inf,
- src: []float64{-inf, 4, nan, 8, 9},
- expect: []float64{nan, inf, nan, inf, inf},
- },
- } {
- g_ln := 4 + j%2
- v.src = guardVector(v.src, src_gd, g_ln)
- src := v.src[g_ln : len(v.src)-g_ln]
- AddConst(v.alpha, src)
- for i := range v.expect {
- if !same(src[i], v.expect[i]) {
- t.Errorf("Test %d AddConst error at %d Got: %v Expected: %v", j, i, src[i], v.expect[i])
- }
- }
- if !isValidGuard(v.src, src_gd, g_ln) {
- t.Errorf("Test %d Guard violated in src vector %v %v", j, v.src[:g_ln], v.src[len(v.src)-g_ln:])
- }
- }
-}
-
-func TestCumSum(t *testing.T) {
- var src_gd, dst_gd float64 = -1, 0
- for j, v := range []struct {
- dst, src, expect []float64
- }{
- {
- dst: []float64{},
- src: []float64{},
- expect: []float64{},
- },
- {
- dst: []float64{0},
- src: []float64{1},
- expect: []float64{1},
- },
- {
- dst: []float64{nan},
- src: []float64{nan},
- expect: []float64{nan},
- },
- {
- dst: []float64{0, 0, 0},
- src: []float64{1, 2, 3},
- expect: []float64{1, 3, 6},
- },
- {
- dst: []float64{0, 0, 0, 0},
- src: []float64{1, 2, 3},
- expect: []float64{1, 3, 6},
- },
- {
- dst: []float64{0, 0, 0, 0},
- src: []float64{1, 2, 3, 4},
- expect: []float64{1, 3, 6, 10},
- },
- {
- dst: []float64{1, nan, nan, 1, 1},
- src: []float64{1, 1, nan, 1, 1},
- expect: []float64{1, 2, nan, nan, nan},
- },
- {
- dst: []float64{nan, 4, inf, -inf, 9},
- src: []float64{inf, 4, nan, -inf, 9},
- expect: []float64{inf, inf, nan, nan, nan},
- },
- {
- dst: make([]float64, 16),
- src: []float64{1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1},
- expect: []float64{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16},
- },
- } {
- g_ln := 4 + j%2
- v.src, v.dst = guardVector(v.src, src_gd, g_ln), guardVector(v.dst, dst_gd, g_ln)
- src, dst := v.src[g_ln:len(v.src)-g_ln], v.dst[g_ln:len(v.dst)-g_ln]
- ret := CumSum(dst, src)
- for i := range v.expect {
- if !same(ret[i], v.expect[i]) {
- t.Errorf("Test %d CumSum error at %d Got: %v Expected: %v", j, i, ret[i], v.expect[i])
- }
- if !same(ret[i], dst[i]) {
- t.Errorf("Test %d CumSum ret/dst mismatch %d Ret: %v Dst: %v", j, i, ret[i], dst[i])
- }
- }
- if !isValidGuard(v.src, src_gd, g_ln) {
- t.Errorf("Test %d Guard violated in src vector %v %v", j, v.src[:g_ln], v.src[len(v.src)-g_ln:])
- }
- if !isValidGuard(v.dst, dst_gd, g_ln) {
- t.Errorf("Test %d Guard violated in dst vector %v %v", j, v.dst[:g_ln], v.dst[len(v.dst)-g_ln:])
- }
- }
-}
-
-func TestCumProd(t *testing.T) {
- var src_gd, dst_gd float64 = -1, 1
- for j, v := range []struct {
- dst, src, expect []float64
- }{
- {
- dst: []float64{},
- src: []float64{},
- expect: []float64{},
- },
- {
- dst: []float64{1},
- src: []float64{1},
- expect: []float64{1},
- },
- {
- dst: []float64{nan},
- src: []float64{nan},
- expect: []float64{nan},
- },
- {
- dst: []float64{0, 0, 0, 0},
- src: []float64{1, 2, 3, 4},
- expect: []float64{1, 2, 6, 24},
- },
- {
- dst: []float64{0, 0, 0},
- src: []float64{1, 2, 3},
- expect: []float64{1, 2, 6},
- },
- {
- dst: []float64{0, 0, 0, 0},
- src: []float64{1, 2, 3},
- expect: []float64{1, 2, 6},
- },
- {
- dst: []float64{nan, 1, nan, 1, 0},
- src: []float64{1, 1, nan, 1, 1},
- expect: []float64{1, 1, nan, nan, nan},
- },
- {
- dst: []float64{nan, 4, nan, -inf, 9},
- src: []float64{inf, 4, nan, -inf, 9},
- expect: []float64{inf, inf, nan, nan, nan},
- },
- {
- dst: make([]float64, 18),
- src: []float64{2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2},
- expect: []float64{2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536},
- },
- } {
- sg_ln, dg_ln := 4+j%2, 4+j%3
- v.src, v.dst = guardVector(v.src, src_gd, sg_ln), guardVector(v.dst, dst_gd, dg_ln)
- src, dst := v.src[sg_ln:len(v.src)-sg_ln], v.dst[dg_ln:len(v.dst)-dg_ln]
- ret := CumProd(dst, src)
- for i := range v.expect {
- if !same(ret[i], v.expect[i]) {
- t.Errorf("Test %d CumProd error at %d Got: %v Expected: %v", j, i, ret[i], v.expect[i])
- }
- if !same(ret[i], dst[i]) {
- t.Errorf("Test %d CumProd ret/dst mismatch %d Ret: %v Dst: %v", j, i, ret[i], dst[i])
- }
- }
- if !isValidGuard(v.src, src_gd, sg_ln) {
- t.Errorf("Test %d Guard violated in src vector %v %v", j, v.src[:sg_ln], v.src[len(v.src)-sg_ln:])
- }
- if !isValidGuard(v.dst, dst_gd, dg_ln) {
- t.Errorf("Test %d Guard violated in dst vector %v %v", j, v.dst[:dg_ln], v.dst[len(v.dst)-dg_ln:])
- }
- }
-}
-
-func TestDiv(t *testing.T) {
- var src_gd, dst_gd float64 = -1, 0.5
- for j, v := range []struct {
- dst, src, expect []float64
- }{
- {
- dst: []float64{1},
- src: []float64{1},
- expect: []float64{1},
- },
- {
- dst: []float64{nan},
- src: []float64{nan},
- expect: []float64{nan},
- },
- {
- dst: []float64{1, 2, 3, 4},
- src: []float64{1, 2, 3, 4},
- expect: []float64{1, 1, 1, 1},
- },
- {
- dst: []float64{1, 2, 3, 4, 2, 4, 6, 8},
- src: []float64{1, 2, 3, 4, 1, 2, 3, 4},
- expect: []float64{1, 1, 1, 1, 2, 2, 2, 2},
- },
- {
- dst: []float64{2, 4, 6},
- src: []float64{1, 2, 3},
- expect: []float64{2, 2, 2},
- },
- {
- dst: []float64{0, 0, 0, 0},
- src: []float64{1, 2, 3},
- expect: []float64{0, 0, 0},
- },
- {
- dst: []float64{nan, 1, nan, 1, 0, nan, 1, nan, 1, 0},
- src: []float64{1, 1, nan, 1, 1, 1, 1, nan, 1, 1},
- expect: []float64{nan, 1, nan, 1, 0, nan, 1, nan, 1, 0},
- },
- {
- dst: []float64{inf, 4, nan, -inf, 9, inf, 4, nan, -inf, 9},
- src: []float64{inf, 4, nan, -inf, 3, inf, 4, nan, -inf, 3},
- expect: []float64{nan, 1, nan, nan, 3, nan, 1, nan, nan, 3},
- },
- } {
- sg_ln, dg_ln := 4+j%2, 4+j%3
- v.src, v.dst = guardVector(v.src, src_gd, sg_ln), guardVector(v.dst, dst_gd, dg_ln)
- src, dst := v.src[sg_ln:len(v.src)-sg_ln], v.dst[dg_ln:len(v.dst)-dg_ln]
- Div(dst, src)
- for i := range v.expect {
- if !same(dst[i], v.expect[i]) {
- t.Errorf("Test %d Div error at %d Got: %v Expected: %v", j, i, dst[i], v.expect[i])
- }
- }
- if !isValidGuard(v.src, src_gd, sg_ln) {
- t.Errorf("Test %d Guard violated in src vector %v %v", j, v.src[:sg_ln], v.src[len(v.src)-sg_ln:])
- }
- if !isValidGuard(v.dst, dst_gd, dg_ln) {
- t.Errorf("Test %d Guard violated in dst vector %v %v", j, v.dst[:dg_ln], v.dst[len(v.dst)-dg_ln:])
- }
- }
-}
-
-func TestDivTo(t *testing.T) {
- var dst_gd, x_gd, y_gd float64 = -1, 0.5, 0.25
- for j, v := range []struct {
- dst, x, y, expect []float64
- }{
- {
- dst: []float64{1},
- x: []float64{1},
- y: []float64{1},
- expect: []float64{1},
- },
- {
- dst: []float64{1},
- x: []float64{nan},
- y: []float64{nan},
- expect: []float64{nan},
- },
- {
- dst: []float64{-2, -2, -2},
- x: []float64{1, 2, 3},
- y: []float64{1, 2, 3},
- expect: []float64{1, 1, 1},
- },
- {
- dst: []float64{0, 0, 0},
- x: []float64{2, 4, 6},
- y: []float64{1, 2, 3, 4},
- expect: []float64{2, 2, 2},
- },
- {
- dst: []float64{-1, -1, -1},
- x: []float64{0, 0, 0},
- y: []float64{1, 2, 3},
- expect: []float64{0, 0, 0},
- },
- {
- dst: []float64{inf, inf, inf, inf, inf, inf, inf, inf, inf, inf},
- x: []float64{nan, 1, nan, 1, 0, nan, 1, nan, 1, 0},
- y: []float64{1, 1, nan, 1, 1, 1, 1, nan, 1, 1},
- expect: []float64{nan, 1, nan, 1, 0, nan, 1, nan, 1, 0},
- },
- {
- dst: []float64{0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
- x: []float64{inf, 4, nan, -inf, 9, inf, 4, nan, -inf, 9},
- y: []float64{inf, 4, nan, -inf, 3, inf, 4, nan, -inf, 3},
- expect: []float64{nan, 1, nan, nan, 3, nan, 1, nan, nan, 3},
- },
- } {
- xg_ln, yg_ln := 4+j%2, 4+j%3
- v.y, v.x = guardVector(v.y, y_gd, yg_ln), guardVector(v.x, x_gd, xg_ln)
- y, x := v.y[yg_ln:len(v.y)-yg_ln], v.x[xg_ln:len(v.x)-xg_ln]
- v.dst = guardVector(v.dst, dst_gd, xg_ln)
- dst := v.dst[xg_ln : len(v.dst)-xg_ln]
- ret := DivTo(dst, x, y)
- for i := range v.expect {
- if !same(ret[i], v.expect[i]) {
- t.Errorf("Test %d DivTo error at %d Got: %v Expected: %v", j, i, ret[i], v.expect[i])
- }
- if !same(ret[i], dst[i]) {
- t.Errorf("Test %d DivTo ret/dst mismatch %d Ret: %v Dst: %v", j, i, ret[i], dst[i])
- }
- }
- if !isValidGuard(v.y, y_gd, yg_ln) {
- t.Errorf("Test %d Guard violated in y vector %v %v", j, v.y[:yg_ln], v.y[len(v.y)-yg_ln:])
- }
- if !isValidGuard(v.x, x_gd, xg_ln) {
- t.Errorf("Test %d Guard violated in x vector %v %v", j, v.x[:xg_ln], v.x[len(v.x)-xg_ln:])
- }
- if !isValidGuard(v.dst, dst_gd, xg_ln) {
- t.Errorf("Test %d Guard violated in dst vector %v %v", j, v.dst[:xg_ln], v.dst[len(v.dst)-xg_ln:])
- }
- }
-}
-
-func TestL1Dist(t *testing.T) {
- var t_gd, s_gd float64 = -inf, inf
- for j, v := range []struct {
- s, t []float64
- expect float64
- }{
- {
- s: []float64{1},
- t: []float64{1},
- expect: 0,
- },
- {
- s: []float64{nan},
- t: []float64{nan},
- expect: nan,
- },
- {
- s: []float64{1, 2, 3, 4},
- t: []float64{1, 2, 3, 4},
- expect: 0,
- },
- {
- s: []float64{2, 4, 6},
- t: []float64{1, 2, 3, 4},
- expect: 6,
- },
- {
- s: []float64{0, 0, 0},
- t: []float64{1, 2, 3},
- expect: 6,
- },
- {
- s: []float64{0, -4, -10},
- t: []float64{1, 2, 3},
- expect: 20,
- },
- {
- s: []float64{0, 1, 0, 1, 0},
- t: []float64{1, 1, inf, 1, 1},
- expect: inf,
- },
- {
- s: []float64{inf, 4, nan, -inf, 9},
- t: []float64{inf, 4, nan, -inf, 3},
- expect: nan,
- },
- } {
- sg_ln, tg_ln := 4+j%2, 4+j%3
- v.s, v.t = guardVector(v.s, s_gd, sg_ln), guardVector(v.t, t_gd, tg_ln)
- s_lc, t_lc := v.s[sg_ln:len(v.s)-sg_ln], v.t[tg_ln:len(v.t)-tg_ln]
- ret := L1Dist(s_lc, t_lc)
- if !same(ret, v.expect) {
- t.Errorf("Test %d L1Dist error Got: %f Expected: %f", j, ret, v.expect)
- }
- if !isValidGuard(v.s, s_gd, sg_ln) {
- t.Errorf("Test %d Guard violated in s vector %v %v", j, v.s[:sg_ln], v.s[len(v.s)-sg_ln:])
- }
- if !isValidGuard(v.t, t_gd, tg_ln) {
- t.Errorf("Test %d Guard violated in t vector %v %v", j, v.t[:tg_ln], v.t[len(v.t)-tg_ln:])
- }
- }
-}
-
-func TestLinfDist(t *testing.T) {
- var t_gd, s_gd float64 = 0, inf
- for j, v := range []struct {
- s, t []float64
- expect float64
- }{
- {
- s: []float64{},
- t: []float64{},
- expect: 0,
- },
- {
- s: []float64{1},
- t: []float64{1},
- expect: 0,
- },
- {
- s: []float64{nan},
- t: []float64{nan},
- expect: nan,
- },
- {
- s: []float64{1, 2, 3, 4},
- t: []float64{1, 2, 3, 4},
- expect: 0,
- },
- {
- s: []float64{2, 4, 6},
- t: []float64{1, 2, 3, 4},
- expect: 3,
- },
- {
- s: []float64{0, 0, 0},
- t: []float64{1, 2, 3},
- expect: 3,
- },
- {
- s: []float64{0, 1, 0, 1, 0},
- t: []float64{1, 1, inf, 1, 1},
- expect: inf,
- },
- {
- s: []float64{inf, 4, nan, -inf, 9},
- t: []float64{inf, 4, nan, -inf, 3},
- expect: 6,
- },
- } {
- sg_ln, tg_ln := 4+j%2, 4+j%3
- v.s, v.t = guardVector(v.s, s_gd, sg_ln), guardVector(v.t, t_gd, tg_ln)
- s_lc, t_lc := v.s[sg_ln:len(v.s)-sg_ln], v.t[tg_ln:len(v.t)-tg_ln]
- ret := LinfDist(s_lc, t_lc)
- if !same(ret, v.expect) {
- t.Errorf("Test %d LinfDist error Got: %f Expected: %f", j, ret, v.expect)
- }
- if !isValidGuard(v.s, s_gd, sg_ln) {
- t.Errorf("Test %d Guard violated in s vector %v %v", j, v.s[:sg_ln], v.s[len(v.s)-sg_ln:])
- }
- if !isValidGuard(v.t, t_gd, tg_ln) {
- t.Errorf("Test %d Guard violated in t vector %v %v", j, v.t[:tg_ln], v.t[len(v.t)-tg_ln:])
- }
- }
-}
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