fastint_test.tmpl raw
1 // +build amd64
2
3
4 // Code generated by Makefile, DO NOT EDIT.
5
6 /*
7 * Copyright 2021 ByteDance Inc.
8 *
9 * Licensed under the Apache License, Version 2.0 (the "License");
10 * you may not use this file except in compliance with the License.
11 * You may obtain a copy of the License at
12 *
13 * http://www.apache.org/licenses/LICENSE-2.0
14 *
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
20 */
21
22 package {{PACKAGE}}
23
24 import (
25 `strconv`
26 `testing`
27 `fmt`
28
29 `github.com/stretchr/testify/assert`
30 )
31
32 func TestFastInt_IntToString(t *testing.T) {
33 var buf [32]byte
34 assert.Equal(t, "0" , string(buf[:i64toa(&buf[0], 0)]))
35 assert.Equal(t, "1" , string(buf[:i64toa(&buf[0], 1)]))
36 assert.Equal(t, "12" , string(buf[:i64toa(&buf[0], 12)]))
37 assert.Equal(t, "123" , string(buf[:i64toa(&buf[0], 123)]))
38 assert.Equal(t, "1234" , string(buf[:i64toa(&buf[0], 1234)]))
39 assert.Equal(t, "12345" , string(buf[:i64toa(&buf[0], 12345)]))
40 assert.Equal(t, "123456" , string(buf[:i64toa(&buf[0], 123456)]))
41 assert.Equal(t, "1234567" , string(buf[:i64toa(&buf[0], 1234567)]))
42 assert.Equal(t, "12345678" , string(buf[:i64toa(&buf[0], 12345678)]))
43 assert.Equal(t, "123456789" , string(buf[:i64toa(&buf[0], 123456789)]))
44 assert.Equal(t, "1234567890" , string(buf[:i64toa(&buf[0], 1234567890)]))
45 assert.Equal(t, "12345678901" , string(buf[:i64toa(&buf[0], 12345678901)]))
46 assert.Equal(t, "123456789012" , string(buf[:i64toa(&buf[0], 123456789012)]))
47 assert.Equal(t, "1234567890123" , string(buf[:i64toa(&buf[0], 1234567890123)]))
48 assert.Equal(t, "12345678901234" , string(buf[:i64toa(&buf[0], 12345678901234)]))
49 assert.Equal(t, "123456789012345" , string(buf[:i64toa(&buf[0], 123456789012345)]))
50 assert.Equal(t, "1234567890123456" , string(buf[:i64toa(&buf[0], 1234567890123456)]))
51 assert.Equal(t, "12345678901234567" , string(buf[:i64toa(&buf[0], 12345678901234567)]))
52 assert.Equal(t, "123456789012345678" , string(buf[:i64toa(&buf[0], 123456789012345678)]))
53 assert.Equal(t, "1234567890123456789" , string(buf[:i64toa(&buf[0], 1234567890123456789)]))
54 assert.Equal(t, "9223372036854775807" , string(buf[:i64toa(&buf[0], 9223372036854775807)]))
55 assert.Equal(t, "-1" , string(buf[:i64toa(&buf[0], -1)]))
56 assert.Equal(t, "-12" , string(buf[:i64toa(&buf[0], -12)]))
57 assert.Equal(t, "-123" , string(buf[:i64toa(&buf[0], -123)]))
58 assert.Equal(t, "-1234" , string(buf[:i64toa(&buf[0], -1234)]))
59 assert.Equal(t, "-12345" , string(buf[:i64toa(&buf[0], -12345)]))
60 assert.Equal(t, "-123456" , string(buf[:i64toa(&buf[0], -123456)]))
61 assert.Equal(t, "-1234567" , string(buf[:i64toa(&buf[0], -1234567)]))
62 assert.Equal(t, "-12345678" , string(buf[:i64toa(&buf[0], -12345678)]))
63 assert.Equal(t, "-123456789" , string(buf[:i64toa(&buf[0], -123456789)]))
64 assert.Equal(t, "-1234567890" , string(buf[:i64toa(&buf[0], -1234567890)]))
65 assert.Equal(t, "-12345678901" , string(buf[:i64toa(&buf[0], -12345678901)]))
66 assert.Equal(t, "-123456789012" , string(buf[:i64toa(&buf[0], -123456789012)]))
67 assert.Equal(t, "-1234567890123" , string(buf[:i64toa(&buf[0], -1234567890123)]))
68 assert.Equal(t, "-12345678901234" , string(buf[:i64toa(&buf[0], -12345678901234)]))
69 assert.Equal(t, "-123456789012345" , string(buf[:i64toa(&buf[0], -123456789012345)]))
70 assert.Equal(t, "-1234567890123456" , string(buf[:i64toa(&buf[0], -1234567890123456)]))
71 assert.Equal(t, "-12345678901234567" , string(buf[:i64toa(&buf[0], -12345678901234567)]))
72 assert.Equal(t, "-123456789012345678" , string(buf[:i64toa(&buf[0], -123456789012345678)]))
73 assert.Equal(t, "-1234567890123456789" , string(buf[:i64toa(&buf[0], -1234567890123456789)]))
74 assert.Equal(t, "-9223372036854775808" , string(buf[:i64toa(&buf[0], -9223372036854775808)]))
75 }
76
77 func TestFastInt_UintToString(t *testing.T) {
78 var buf [32]byte
79 assert.Equal(t, "0" , string(buf[:u64toa(&buf[0], 0)]))
80 assert.Equal(t, "1" , string(buf[:u64toa(&buf[0], 1)]))
81 assert.Equal(t, "12" , string(buf[:u64toa(&buf[0], 12)]))
82 assert.Equal(t, "123" , string(buf[:u64toa(&buf[0], 123)]))
83 assert.Equal(t, "1234" , string(buf[:u64toa(&buf[0], 1234)]))
84 assert.Equal(t, "12345" , string(buf[:u64toa(&buf[0], 12345)]))
85 assert.Equal(t, "123456" , string(buf[:u64toa(&buf[0], 123456)]))
86 assert.Equal(t, "1234567" , string(buf[:u64toa(&buf[0], 1234567)]))
87 assert.Equal(t, "12345678" , string(buf[:u64toa(&buf[0], 12345678)]))
88 assert.Equal(t, "123456789" , string(buf[:u64toa(&buf[0], 123456789)]))
89 assert.Equal(t, "1234567890" , string(buf[:u64toa(&buf[0], 1234567890)]))
90 assert.Equal(t, "12345678901" , string(buf[:u64toa(&buf[0], 12345678901)]))
91 assert.Equal(t, "123456789012" , string(buf[:u64toa(&buf[0], 123456789012)]))
92 assert.Equal(t, "1234567890123" , string(buf[:u64toa(&buf[0], 1234567890123)]))
93 assert.Equal(t, "12345678901234" , string(buf[:u64toa(&buf[0], 12345678901234)]))
94 assert.Equal(t, "123456789012345" , string(buf[:u64toa(&buf[0], 123456789012345)]))
95 assert.Equal(t, "1234567890123456" , string(buf[:u64toa(&buf[0], 1234567890123456)]))
96 assert.Equal(t, "12345678901234567" , string(buf[:u64toa(&buf[0], 12345678901234567)]))
97 assert.Equal(t, "123456789012345678" , string(buf[:u64toa(&buf[0], 123456789012345678)]))
98 assert.Equal(t, "1234567890123456789" , string(buf[:u64toa(&buf[0], 1234567890123456789)]))
99 assert.Equal(t, "12345678901234567890" , string(buf[:u64toa(&buf[0], 12345678901234567890)]))
100 assert.Equal(t, "18446744073709551615" , string(buf[:u64toa(&buf[0], 18446744073709551615)]))
101 }
102
103 func BenchmarkFastInt_IntToString(b *testing.B) {
104 benchmarks := []struct {
105 name string
106 test func(*testing.B)
107 }{{
108 name: "StdLib-Positive",
109 test: func(b *testing.B) { var buf [32]byte; for i := 0; i < b.N; i++ { strconv.AppendInt(buf[:0], int64(i), 10) }},
110 }, {
111 name: "StdLib-Negative",
112 test: func(b *testing.B) { var buf [32]byte; for i := 0; i < b.N; i++ { strconv.AppendInt(buf[:0], -int64(i), 10) }},
113 }, {
114 name: "FastInt-Positive",
115 test: func(b *testing.B) { var buf [32]byte; for i := 0; i < b.N; i++ { i64toa(&buf[0], int64(i)) }},
116 }, {
117 name: "FastInt-Negative",
118 test: func(b *testing.B) { var buf [32]byte; for i := 0; i < b.N; i++ { i64toa(&buf[0], -int64(i)) }},
119 }}
120 for _, bm := range benchmarks {
121 b.Run(bm.name, bm.test)
122 }
123 }
124
125 type utoaBench struct {
126 name string
127 num uint64
128 }
129
130 func BenchmarkFastInt_UintToString(b *testing.B) {
131 maxUint := "18446744073709551615"
132 benchs := make([]utoaBench, len(maxUint) + 1)
133 benchs[0].name = "Zero"
134 benchs[0].num = 0
135 for i := 1; i <= len(maxUint); i++ {
136 benchs[i].name = strconv.FormatInt(int64(i), 10) + "-Digs"
137 benchs[i].num, _ = strconv.ParseUint(string(maxUint[:i]), 10, 64)
138 }
139
140 for _, t := range(benchs) {
141 benchmarks := []struct {
142 name string
143 test func(*testing.B)
144 }{{
145 name: "StdLib",
146 test: func(b *testing.B) { var buf [32]byte; for i := 0; i < b.N; i++ { strconv.AppendUint(buf[:0], t.num, 10) }},
147 }, {
148 name: "FastInt",
149 test: func(b *testing.B) { var buf [32]byte; for i := 0; i < b.N; i++ { u64toa(&buf[0], t.num) }},
150 }}
151 for _, bm := range benchmarks {
152 name := fmt.Sprintf("%s_%s", bm.name, t.name)
153 b.Run(name, bm.test)
154 }
155 }
156 }