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package inf
import (
"fmt"
"math/big"
"math/rand"
"sync"
"testing"
)
const maxcap = 1024 * 1024
const bits = 256
const maxscale = 32
var once sync.Once
var decInput [][2]Dec
var intInput [][2]big.Int
var initBench = func() {
decInput = make([][2]Dec, maxcap)
intInput = make([][2]big.Int, maxcap)
max := new(big.Int).Lsh(big.NewInt(1), bits)
r := rand.New(rand.NewSource(0))
for i := 0; i < cap(decInput); i++ {
decInput[i][0].SetUnscaledBig(new(big.Int).Rand(r, max)).
SetScale(Scale(r.Int31n(int32(2*maxscale-1)) - int32(maxscale)))
decInput[i][1].SetUnscaledBig(new(big.Int).Rand(r, max)).
SetScale(Scale(r.Int31n(int32(2*maxscale-1)) - int32(maxscale)))
}
for i := 0; i < cap(intInput); i++ {
intInput[i][0].Rand(r, max)
intInput[i][1].Rand(r, max)
}
}
func doBenchmarkDec1(b *testing.B, f func(z *Dec)) {
once.Do(initBench)
b.ResetTimer()
b.StartTimer()
for i := 0; i < b.N; i++ {
f(&decInput[i%maxcap][0])
}
}
func doBenchmarkDec2(b *testing.B, f func(x, y *Dec)) {
once.Do(initBench)
b.ResetTimer()
b.StartTimer()
for i := 0; i < b.N; i++ {
f(&decInput[i%maxcap][0], &decInput[i%maxcap][1])
}
}
func doBenchmarkInt1(b *testing.B, f func(z *big.Int)) {
once.Do(initBench)
b.ResetTimer()
b.StartTimer()
for i := 0; i < b.N; i++ {
f(&intInput[i%maxcap][0])
}
}
func doBenchmarkInt2(b *testing.B, f func(x, y *big.Int)) {
once.Do(initBench)
b.ResetTimer()
b.StartTimer()
for i := 0; i < b.N; i++ {
f(&intInput[i%maxcap][0], &intInput[i%maxcap][1])
}
}
func Benchmark_Dec_String(b *testing.B) {
doBenchmarkDec1(b, func(x *Dec) {
x.String()
})
}
func Benchmark_Dec_StringScan(b *testing.B) {
doBenchmarkDec1(b, func(x *Dec) {
s := x.String()
d := new(Dec)
fmt.Sscan(s, d)
})
}
func Benchmark_Dec_GobEncode(b *testing.B) {
doBenchmarkDec1(b, func(x *Dec) {
x.GobEncode()
})
}
func Benchmark_Dec_GobEnDecode(b *testing.B) {
doBenchmarkDec1(b, func(x *Dec) {
g, _ := x.GobEncode()
new(Dec).GobDecode(g)
})
}
func Benchmark_Dec_Add(b *testing.B) {
doBenchmarkDec2(b, func(x, y *Dec) {
ys := y.Scale()
y.SetScale(x.Scale())
_ = new(Dec).Add(x, y)
y.SetScale(ys)
})
}
func Benchmark_Dec_AddMixed(b *testing.B) {
doBenchmarkDec2(b, func(x, y *Dec) {
_ = new(Dec).Add(x, y)
})
}
func Benchmark_Dec_Sub(b *testing.B) {
doBenchmarkDec2(b, func(x, y *Dec) {
ys := y.Scale()
y.SetScale(x.Scale())
_ = new(Dec).Sub(x, y)
y.SetScale(ys)
})
}
func Benchmark_Dec_SubMixed(b *testing.B) {
doBenchmarkDec2(b, func(x, y *Dec) {
_ = new(Dec).Sub(x, y)
})
}
func Benchmark_Dec_Mul(b *testing.B) {
doBenchmarkDec2(b, func(x, y *Dec) {
_ = new(Dec).Mul(x, y)
})
}
func Benchmark_Dec_Mul_QuoExact(b *testing.B) {
doBenchmarkDec2(b, func(x, y *Dec) {
v := new(Dec).Mul(x, y)
_ = new(Dec).QuoExact(v, y)
})
}
func Benchmark_Dec_QuoRound_Fixed_Down(b *testing.B) {
doBenchmarkDec2(b, func(x, y *Dec) {
_ = new(Dec).QuoRound(x, y, 0, RoundDown)
})
}
func Benchmark_Dec_QuoRound_Fixed_HalfUp(b *testing.B) {
doBenchmarkDec2(b, func(x, y *Dec) {
_ = new(Dec).QuoRound(x, y, 0, RoundHalfUp)
})
}
func Benchmark_Int_String(b *testing.B) {
doBenchmarkInt1(b, func(x *big.Int) {
x.String()
})
}
func Benchmark_Int_StringScan(b *testing.B) {
doBenchmarkInt1(b, func(x *big.Int) {
s := x.String()
d := new(big.Int)
fmt.Sscan(s, d)
})
}
func Benchmark_Int_GobEncode(b *testing.B) {
doBenchmarkInt1(b, func(x *big.Int) {
x.GobEncode()
})
}
func Benchmark_Int_GobEnDecode(b *testing.B) {
doBenchmarkInt1(b, func(x *big.Int) {
g, _ := x.GobEncode()
new(big.Int).GobDecode(g)
})
}
func Benchmark_Int_Add(b *testing.B) {
doBenchmarkInt2(b, func(x, y *big.Int) {
_ = new(big.Int).Add(x, y)
})
}
func Benchmark_Int_Sub(b *testing.B) {
doBenchmarkInt2(b, func(x, y *big.Int) {
_ = new(big.Int).Sub(x, y)
})
}
func Benchmark_Int_Mul(b *testing.B) {
doBenchmarkInt2(b, func(x, y *big.Int) {
_ = new(big.Int).Mul(x, y)
})
}
func Benchmark_Int_Quo(b *testing.B) {
doBenchmarkInt2(b, func(x, y *big.Int) {
_ = new(big.Int).Quo(x, y)
})
}
func Benchmark_Int_QuoRem(b *testing.B) {
doBenchmarkInt2(b, func(x, y *big.Int) {
_, _ = new(big.Int).QuoRem(x, y, new(big.Int))
})
}
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