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math/big: use run for benchmarks
shortens code and gives an example of the use of Run. Change-Id: I75ffaf762218a589274b4b62e19022e31e805d1b Reviewed-on: https://go-review.googlesource.com/23424 Reviewed-by: Russ Cox <rsc@golang.org> Run-TryBot: Marcel van Lohuizen <mpvl@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Marcel van Lohuizen
parent
23cb8864b5
commit
07f0c19a30
@ -5,6 +5,7 @@
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package big
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import (
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"fmt"
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"math/rand"
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"testing"
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)
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@ -118,27 +119,35 @@ func rndV(n int) []Word {
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return v
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}
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func benchmarkFunVV(b *testing.B, f funVV, n int) {
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x := rndV(n)
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y := rndV(n)
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z := make([]Word, n)
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b.SetBytes(int64(n * _W))
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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f(z, x, y)
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}
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var benchSizes = []struct {
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name string
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n int
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}{
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{"1", 1},
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{"2", 2},
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{"3", 3},
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{"4", 4},
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{"5", 5},
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{"1e1", 1e1},
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{"1e2", 1e2},
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{"1e3", 1e3},
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{"1e4", 1e4},
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{"1e5", 1e5},
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}
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func BenchmarkAddVV_1(b *testing.B) { benchmarkFunVV(b, addVV, 1) }
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func BenchmarkAddVV_2(b *testing.B) { benchmarkFunVV(b, addVV, 2) }
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func BenchmarkAddVV_3(b *testing.B) { benchmarkFunVV(b, addVV, 3) }
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func BenchmarkAddVV_4(b *testing.B) { benchmarkFunVV(b, addVV, 4) }
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func BenchmarkAddVV_5(b *testing.B) { benchmarkFunVV(b, addVV, 5) }
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func BenchmarkAddVV_1e1(b *testing.B) { benchmarkFunVV(b, addVV, 1e1) }
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func BenchmarkAddVV_1e2(b *testing.B) { benchmarkFunVV(b, addVV, 1e2) }
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func BenchmarkAddVV_1e3(b *testing.B) { benchmarkFunVV(b, addVV, 1e3) }
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func BenchmarkAddVV_1e4(b *testing.B) { benchmarkFunVV(b, addVV, 1e4) }
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func BenchmarkAddVV_1e5(b *testing.B) { benchmarkFunVV(b, addVV, 1e5) }
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func BenchmarkAddVV(b *testing.B) {
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for _, tc := range benchSizes {
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x := rndV(tc.n)
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y := rndV(tc.n)
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z := make([]Word, tc.n)
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b.Run(fmt.Sprint(tc.name), func(b *testing.B) {
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b.SetBytes(int64(tc.n * _W))
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for i := 0; i < b.N; i++ {
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addVV(z, x, y)
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}
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})
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}
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}
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type funVW func(z, x []Word, y Word) (c Word)
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type argVW struct {
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@ -236,28 +245,20 @@ func TestFunVW(t *testing.T) {
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}
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}
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func benchmarkFunVW(b *testing.B, f funVW, n int) {
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x := rndV(n)
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y := rndW()
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z := make([]Word, n)
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b.SetBytes(int64(n * _S))
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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f(z, x, y)
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func BenchmarkAddVW(b *testing.B) {
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for _, tc := range benchSizes {
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x := rndV(tc.n)
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y := rndW()
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z := make([]Word, tc.n)
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b.Run(fmt.Sprint(tc.name), func(b *testing.B) {
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b.SetBytes(int64(tc.n * _S))
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for i := 0; i < b.N; i++ {
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addVW(z, x, y)
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}
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})
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}
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}
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func BenchmarkAddVW_1(b *testing.B) { benchmarkFunVW(b, addVW, 1) }
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func BenchmarkAddVW_2(b *testing.B) { benchmarkFunVW(b, addVW, 2) }
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func BenchmarkAddVW_3(b *testing.B) { benchmarkFunVW(b, addVW, 3) }
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func BenchmarkAddVW_4(b *testing.B) { benchmarkFunVW(b, addVW, 4) }
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func BenchmarkAddVW_5(b *testing.B) { benchmarkFunVW(b, addVW, 5) }
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func BenchmarkAddVW_1e1(b *testing.B) { benchmarkFunVW(b, addVW, 1e1) }
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func BenchmarkAddVW_1e2(b *testing.B) { benchmarkFunVW(b, addVW, 1e2) }
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func BenchmarkAddVW_1e3(b *testing.B) { benchmarkFunVW(b, addVW, 1e3) }
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func BenchmarkAddVW_1e4(b *testing.B) { benchmarkFunVW(b, addVW, 1e4) }
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func BenchmarkAddVW_1e5(b *testing.B) { benchmarkFunVW(b, addVW, 1e5) }
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type funVWW func(z, x []Word, y, r Word) (c Word)
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type argVWW struct {
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z, x nat
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@ -382,28 +383,20 @@ func TestMulAddWWW(t *testing.T) {
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}
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}
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func benchmarkAddMulVVW(b *testing.B, n int) {
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x := rndV(n)
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y := rndW()
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z := make([]Word, n)
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b.SetBytes(int64(n * _W))
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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addMulVVW(z, x, y)
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func BenchmarkAddMulVVW(b *testing.B) {
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for _, tc := range benchSizes {
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x := rndV(tc.n)
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y := rndW()
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z := make([]Word, tc.n)
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b.Run(fmt.Sprint(tc.n), func(b *testing.B) {
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b.SetBytes(int64(tc.n * _W))
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for i := 0; i < b.N; i++ {
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addMulVVW(z, x, y)
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}
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})
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}
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}
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func BenchmarkAddMulVVW_1(b *testing.B) { benchmarkAddMulVVW(b, 1) }
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func BenchmarkAddMulVVW_2(b *testing.B) { benchmarkAddMulVVW(b, 2) }
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func BenchmarkAddMulVVW_3(b *testing.B) { benchmarkAddMulVVW(b, 3) }
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func BenchmarkAddMulVVW_4(b *testing.B) { benchmarkAddMulVVW(b, 4) }
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func BenchmarkAddMulVVW_5(b *testing.B) { benchmarkAddMulVVW(b, 5) }
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func BenchmarkAddMulVVW_1e1(b *testing.B) { benchmarkAddMulVVW(b, 1e1) }
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func BenchmarkAddMulVVW_1e2(b *testing.B) { benchmarkAddMulVVW(b, 1e2) }
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func BenchmarkAddMulVVW_1e3(b *testing.B) { benchmarkAddMulVVW(b, 1e3) }
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func BenchmarkAddMulVVW_1e4(b *testing.B) { benchmarkAddMulVVW(b, 1e4) }
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func BenchmarkAddMulVVW_1e5(b *testing.B) { benchmarkAddMulVVW(b, 1e5) }
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func testWordBitLen(t *testing.T, fname string, f func(Word) int) {
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for i := 0; i <= _W; i++ {
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x := Word(1) << uint(i-1) // i == 0 => x == 0
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@ -420,23 +413,15 @@ func TestWordBitLen(t *testing.T) {
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}
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// runs b.N iterations of bitLen called on a Word containing (1 << nbits)-1.
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func benchmarkBitLenN(b *testing.B, nbits uint) {
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testword := Word((uint64(1) << nbits) - 1)
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for i := 0; i < b.N; i++ {
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bitLen(testword)
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func BenchmarkBitLen(b *testing.B) {
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// Individual bitLen tests. Numbers chosen to examine both sides
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// of powers-of-two boundaries.
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for _, nbits := range []uint{0, 1, 2, 3, 4, 5, 8, 9, 16, 17, 31} {
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testword := Word((uint64(1) << nbits) - 1)
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b.Run(fmt.Sprint(nbits), func(b *testing.B) {
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for i := 0; i < b.N; i++ {
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bitLen(testword)
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}
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})
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}
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}
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// Individual bitLen tests. Numbers chosen to examine both sides
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// of powers-of-two boundaries.
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func BenchmarkBitLen0(b *testing.B) { benchmarkBitLenN(b, 0) }
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func BenchmarkBitLen1(b *testing.B) { benchmarkBitLenN(b, 1) }
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func BenchmarkBitLen2(b *testing.B) { benchmarkBitLenN(b, 2) }
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func BenchmarkBitLen3(b *testing.B) { benchmarkBitLenN(b, 3) }
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func BenchmarkBitLen4(b *testing.B) { benchmarkBitLenN(b, 4) }
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func BenchmarkBitLen5(b *testing.B) { benchmarkBitLenN(b, 5) }
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func BenchmarkBitLen8(b *testing.B) { benchmarkBitLenN(b, 8) }
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func BenchmarkBitLen9(b *testing.B) { benchmarkBitLenN(b, 9) }
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func BenchmarkBitLen16(b *testing.B) { benchmarkBitLenN(b, 16) }
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func BenchmarkBitLen17(b *testing.B) { benchmarkBitLenN(b, 17) }
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func BenchmarkBitLen31(b *testing.B) { benchmarkBitLenN(b, 31) }
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