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// Code generated by Makefile, DO NOT EDIT.
/*
* Copyright 2021 ByteDance Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package {{PACKAGE}}
import (
`encoding/json`
`math`
`math/rand`
`strconv`
`testing`
`github.com/stretchr/testify/assert`
)
func TestFastFloat_Encode(t *testing.T) {
var buf [64]byte
assert.Equal(t, "0" , string(buf[:f64toa(&buf[0], 0)]))
assert.Equal(t, "-0" , string(buf[:f64toa(&buf[0], math.Float64frombits(0x8000000000000000))]))
assert.Equal(t, "12340000000" , string(buf[:f64toa(&buf[0], 1234e7)]))
assert.Equal(t, "12.34" , string(buf[:f64toa(&buf[0], 1234e-2)]))
assert.Equal(t, "0.001234" , string(buf[:f64toa(&buf[0], 1234e-6)]))
assert.Equal(t, "1e+30" , string(buf[:f64toa(&buf[0], 1e30)]))
assert.Equal(t, "1.234e+33" , string(buf[:f64toa(&buf[0], 1234e30)]))
assert.Equal(t, "1.234e+308" , string(buf[:f64toa(&buf[0], 1234e305)]))
assert.Equal(t, "1.234e-317" , string(buf[:f64toa(&buf[0], 1234e-320)]))
assert.Equal(t, "1.7976931348623157e+308" , string(buf[:f64toa(&buf[0], 1.7976931348623157e308)]))
assert.Equal(t, "-12340000000" , string(buf[:f64toa(&buf[0], -1234e7)]))
assert.Equal(t, "-12.34" , string(buf[:f64toa(&buf[0], -1234e-2)]))
assert.Equal(t, "-0.001234" , string(buf[:f64toa(&buf[0], -1234e-6)]))
assert.Equal(t, "-1e+30" , string(buf[:f64toa(&buf[0], -1e30)]))
assert.Equal(t, "-1.234e+33" , string(buf[:f64toa(&buf[0], -1234e30)]))
assert.Equal(t, "-1.234e+308" , string(buf[:f64toa(&buf[0], -1234e305)]))
assert.Equal(t, "-1.234e-317" , string(buf[:f64toa(&buf[0], -1234e-320)]))
assert.Equal(t, "-2.2250738585072014e-308" , string(buf[:f64toa(&buf[0], -2.2250738585072014e-308)]))
}
func TestFastFloat_Random(t *testing.T) {
var buf [64]byte
N := 10000
for i := 0; i < N; i++ {
b64 := uint64(rand.Uint32())<<32 | uint64(rand.Uint32())
f64 := math.Float64frombits(b64)
jout, jerr := json.Marshal(f64)
n := f64toa(&buf[0], f64)
if jerr == nil {
assert.Equal(t, jout, buf[:n])
} else {
assert.True(t, n == 0)
}
f32 := math.Float32frombits(rand.Uint32())
jout, jerr = json.Marshal(f32)
n = f32toa(&buf[0], f32)
if jerr == nil {
assert.Equal(t, jout, buf[:n])
} else {
assert.True(t, n == 0)
}
}
}
func BenchmarkParseFloat64(b *testing.B) {
var f64toaBenches = []struct {
name string
float float64
}{
{"Zero", 0},
{"Decimal", 33909},
{"Float", 339.7784},
{"Exp", -5.09e75},
{"NegExp", -5.11e-95},
{"LongExp", 1.234567890123456e-78},
{"Big", 123456789123456789123456789},
}
for _, c := range f64toaBenches {
f64bench := []struct {
name string
test func(*testing.B)
}{{
name: "StdLib",
test: func(b *testing.B) { var buf [64]byte; for i := 0; i < b.N; i++ { strconv.AppendFloat(buf[:0], c.float, 'g', -1, 64) }},
}, {
name: "FastFloat",
test: func(b *testing.B) { var buf [64]byte; for i := 0; i < b.N; i++ { f64toa(&buf[0], c.float) }},
}}
for _, bm := range f64bench {
name := bm.name + "_" + c.name
b.Run(name, bm.test)
}
}
}
func BenchmarkParseFloat32(b *testing.B) {
var f32toaBenches = []struct {
name string
float float32
}{
{"Zero", 0},
{"Integer", 33909},
{"ExactFraction", 3.375},
{"Point", 339.7784},
{"Exp", -5.09e25},
{"NegExp", -5.11e-25},
{"Shortest", 1.234567e-8},
}
for _, c := range f32toaBenches {
bench := []struct {
name string
test func(*testing.B)
}{{
name: "StdLib32",
test: func(b *testing.B) { var buf [64]byte; for i := 0; i < b.N; i++ { strconv.AppendFloat(buf[:0], float64(c.float), 'g', -1, 32) }},
}, {
name: "FastFloat32",
test: func(b *testing.B) { var buf [64]byte; for i := 0; i < b.N; i++ { f32toa(&buf[0], c.float) }},
}}
for _, bm := range bench {
name := bm.name + "_" + c.name
b.Run(name, bm.test)
}
}
}
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