mirror of
https://github.com/golang/go
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634 lines
9.2 KiB
Go
634 lines
9.2 KiB
Go
// run
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// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test integer division by constants.
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package main
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import "math/rand"
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const Count = 1e5
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func i64rand() int64 {
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for {
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a := int64(rand.Uint32())
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a = (a << 32) | int64(rand.Uint32())
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a >>= uint(rand.Intn(64))
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if -a != a {
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return a
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}
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}
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return 0 // impossible
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}
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func i64test(a, b, c int64) {
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d := a / c
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if d != b {
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println("i64", a, b, c, d)
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panic("fail")
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}
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}
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func i64run() {
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var a, b int64
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for i := 0; i < Count; i++ {
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a = i64rand()
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b = a / 1
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i64test(a, b, 1)
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b = a / 2
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i64test(a, b, 2)
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b = a / 3
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i64test(a, b, 3)
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b = a / 4
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i64test(a, b, 4)
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b = a / 5
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i64test(a, b, 5)
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b = a / 6
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i64test(a, b, 6)
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b = a / 7
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i64test(a, b, 7)
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b = a / 8
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i64test(a, b, 8)
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b = a / 10
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i64test(a, b, 10)
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b = a / 16
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i64test(a, b, 16)
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b = a / 20
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i64test(a, b, 20)
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b = a / 32
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i64test(a, b, 32)
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b = a / 60
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i64test(a, b, 60)
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b = a / 64
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i64test(a, b, 64)
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b = a / 128
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i64test(a, b, 128)
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b = a / 256
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i64test(a, b, 256)
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b = a / 16384
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i64test(a, b, 16384)
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b = a / -1
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i64test(a, b, -1)
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b = a / -2
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i64test(a, b, -2)
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b = a / -3
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i64test(a, b, -3)
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b = a / -4
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i64test(a, b, -4)
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b = a / -5
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i64test(a, b, -5)
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b = a / -6
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i64test(a, b, -6)
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b = a / -7
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i64test(a, b, -7)
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b = a / -8
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i64test(a, b, -8)
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b = a / -10
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i64test(a, b, -10)
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b = a / -16
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i64test(a, b, -16)
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b = a / -20
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i64test(a, b, -20)
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b = a / -32
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i64test(a, b, -32)
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b = a / -60
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i64test(a, b, -60)
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b = a / -64
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i64test(a, b, -64)
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b = a / -128
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i64test(a, b, -128)
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b = a / -256
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i64test(a, b, -256)
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b = a / -16384
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i64test(a, b, -16384)
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}
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}
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func u64rand() uint64 {
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a := uint64(rand.Uint32())
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a = (a << 32) | uint64(rand.Uint32())
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a >>= uint(rand.Intn(64))
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return a
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}
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func u64test(a, b, c uint64) {
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d := a / c
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if d != b {
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println("u64", a, b, c, d)
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panic("fail")
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}
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}
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func u64run() {
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var a, b uint64
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for i := 0; i < Count; i++ {
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a = u64rand()
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b = a / 1
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u64test(a, b, 1)
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b = a / 2
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u64test(a, b, 2)
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b = a / 3
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u64test(a, b, 3)
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b = a / 4
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u64test(a, b, 4)
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b = a / 5
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u64test(a, b, 5)
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b = a / 6
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u64test(a, b, 6)
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b = a / 7
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u64test(a, b, 7)
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b = a / 8
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u64test(a, b, 8)
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b = a / 10
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u64test(a, b, 10)
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b = a / 16
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u64test(a, b, 16)
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b = a / 20
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u64test(a, b, 20)
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b = a / 32
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u64test(a, b, 32)
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b = a / 60
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u64test(a, b, 60)
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b = a / 64
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u64test(a, b, 64)
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b = a / 128
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u64test(a, b, 128)
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b = a / 256
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u64test(a, b, 256)
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b = a / 16384
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u64test(a, b, 16384)
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}
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}
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func i32rand() int32 {
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for {
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a := int32(rand.Uint32())
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a >>= uint(rand.Intn(32))
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if -a != a {
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return a
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}
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}
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return 0 // impossible
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}
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func i32test(a, b, c int32) {
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d := a / c
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if d != b {
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println("i32", a, b, c, d)
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panic("fail")
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}
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}
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func i32run() {
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var a, b int32
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for i := 0; i < Count; i++ {
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a = i32rand()
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b = a / 1
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i32test(a, b, 1)
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b = a / 2
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i32test(a, b, 2)
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b = a / 3
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i32test(a, b, 3)
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b = a / 4
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i32test(a, b, 4)
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b = a / 5
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i32test(a, b, 5)
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b = a / 6
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i32test(a, b, 6)
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b = a / 7
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i32test(a, b, 7)
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b = a / 8
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i32test(a, b, 8)
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b = a / 10
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i32test(a, b, 10)
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b = a / 16
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i32test(a, b, 16)
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b = a / 20
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i32test(a, b, 20)
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b = a / 32
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i32test(a, b, 32)
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b = a / 60
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i32test(a, b, 60)
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b = a / 64
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i32test(a, b, 64)
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b = a / 128
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i32test(a, b, 128)
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b = a / 256
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i32test(a, b, 256)
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b = a / 16384
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i32test(a, b, 16384)
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b = a / -1
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i32test(a, b, -1)
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b = a / -2
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i32test(a, b, -2)
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b = a / -3
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i32test(a, b, -3)
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b = a / -4
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i32test(a, b, -4)
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b = a / -5
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i32test(a, b, -5)
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b = a / -6
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i32test(a, b, -6)
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b = a / -7
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i32test(a, b, -7)
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b = a / -8
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i32test(a, b, -8)
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b = a / -10
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i32test(a, b, -10)
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b = a / -16
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i32test(a, b, -16)
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b = a / -20
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i32test(a, b, -20)
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b = a / -32
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i32test(a, b, -32)
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b = a / -60
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i32test(a, b, -60)
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b = a / -64
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i32test(a, b, -64)
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b = a / -128
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i32test(a, b, -128)
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b = a / -256
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i32test(a, b, -256)
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}
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}
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func u32rand() uint32 {
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a := uint32(rand.Uint32())
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a >>= uint(rand.Intn(32))
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return a
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}
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func u32test(a, b, c uint32) {
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d := a / c
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if d != b {
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println("u32", a, b, c, d)
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panic("fail")
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}
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}
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func u32run() {
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var a, b uint32
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for i := 0; i < Count; i++ {
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a = u32rand()
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b = a / 1
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u32test(a, b, 1)
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b = a / 2
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u32test(a, b, 2)
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b = a / 3
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u32test(a, b, 3)
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b = a / 4
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u32test(a, b, 4)
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b = a / 5
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u32test(a, b, 5)
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b = a / 6
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u32test(a, b, 6)
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b = a / 7
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u32test(a, b, 7)
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b = a / 8
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u32test(a, b, 8)
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b = a / 10
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u32test(a, b, 10)
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b = a / 16
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u32test(a, b, 16)
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b = a / 20
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u32test(a, b, 20)
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b = a / 32
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u32test(a, b, 32)
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b = a / 60
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u32test(a, b, 60)
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b = a / 64
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u32test(a, b, 64)
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b = a / 128
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u32test(a, b, 128)
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b = a / 256
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u32test(a, b, 256)
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b = a / 16384
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u32test(a, b, 16384)
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}
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}
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func i16rand() int16 {
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for {
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a := int16(rand.Uint32())
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a >>= uint(rand.Intn(16))
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if -a != a {
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return a
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}
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}
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return 0 // impossible
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}
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func i16test(a, b, c int16) {
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d := a / c
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if d != b {
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println("i16", a, b, c, d)
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panic("fail")
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}
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}
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func i16run() {
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var a, b int16
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for i := 0; i < Count; i++ {
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a = i16rand()
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b = a / 1
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i16test(a, b, 1)
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b = a / 2
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i16test(a, b, 2)
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b = a / 3
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i16test(a, b, 3)
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b = a / 4
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i16test(a, b, 4)
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b = a / 5
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i16test(a, b, 5)
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b = a / 6
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i16test(a, b, 6)
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b = a / 7
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i16test(a, b, 7)
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b = a / 8
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i16test(a, b, 8)
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b = a / 10
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i16test(a, b, 10)
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b = a / 16
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i16test(a, b, 16)
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b = a / 20
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i16test(a, b, 20)
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b = a / 32
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i16test(a, b, 32)
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b = a / 60
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i16test(a, b, 60)
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b = a / 64
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i16test(a, b, 64)
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b = a / 128
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i16test(a, b, 128)
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b = a / 256
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i16test(a, b, 256)
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b = a / 16384
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i16test(a, b, 16384)
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b = a / -1
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i16test(a, b, -1)
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b = a / -2
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i16test(a, b, -2)
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b = a / -3
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i16test(a, b, -3)
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b = a / -4
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i16test(a, b, -4)
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b = a / -5
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i16test(a, b, -5)
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b = a / -6
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i16test(a, b, -6)
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b = a / -7
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i16test(a, b, -7)
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b = a / -8
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i16test(a, b, -8)
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b = a / -10
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i16test(a, b, -10)
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b = a / -16
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i16test(a, b, -16)
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b = a / -20
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i16test(a, b, -20)
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b = a / -32
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i16test(a, b, -32)
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b = a / -60
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i16test(a, b, -60)
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b = a / -64
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i16test(a, b, -64)
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b = a / -128
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i16test(a, b, -128)
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b = a / -256
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i16test(a, b, -256)
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b = a / -16384
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i16test(a, b, -16384)
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}
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}
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func u16rand() uint16 {
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a := uint16(rand.Uint32())
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a >>= uint(rand.Intn(16))
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return a
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}
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func u16test(a, b, c uint16) {
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d := a / c
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if d != b {
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println("u16", a, b, c, d)
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panic("fail")
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}
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}
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func u16run() {
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var a, b uint16
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for i := 0; i < Count; i++ {
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a = u16rand()
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b = a / 1
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u16test(a, b, 1)
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b = a / 2
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u16test(a, b, 2)
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b = a / 3
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u16test(a, b, 3)
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b = a / 4
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u16test(a, b, 4)
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b = a / 5
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u16test(a, b, 5)
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b = a / 6
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u16test(a, b, 6)
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b = a / 7
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u16test(a, b, 7)
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b = a / 8
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u16test(a, b, 8)
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b = a / 10
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u16test(a, b, 10)
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b = a / 16
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u16test(a, b, 16)
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b = a / 20
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u16test(a, b, 20)
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b = a / 32
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u16test(a, b, 32)
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b = a / 60
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u16test(a, b, 60)
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b = a / 64
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u16test(a, b, 64)
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b = a / 128
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u16test(a, b, 128)
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b = a / 256
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u16test(a, b, 256)
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b = a / 16384
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u16test(a, b, 16384)
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}
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}
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func i8rand() int8 {
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for {
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a := int8(rand.Uint32())
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a >>= uint(rand.Intn(8))
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if -a != a {
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return a
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}
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}
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return 0 // impossible
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}
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func i8test(a, b, c int8) {
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d := a / c
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if d != b {
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println("i8", a, b, c, d)
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panic("fail")
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}
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}
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func i8run() {
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var a, b int8
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for i := 0; i < Count; i++ {
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a = i8rand()
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b = a / 1
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i8test(a, b, 1)
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b = a / 2
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i8test(a, b, 2)
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b = a / 3
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i8test(a, b, 3)
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b = a / 4
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i8test(a, b, 4)
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b = a / 5
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i8test(a, b, 5)
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b = a / 6
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i8test(a, b, 6)
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b = a / 7
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i8test(a, b, 7)
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b = a / 8
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i8test(a, b, 8)
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b = a / 10
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i8test(a, b, 10)
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b = a / 8
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i8test(a, b, 8)
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b = a / 20
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i8test(a, b, 20)
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b = a / 32
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i8test(a, b, 32)
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b = a / 60
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i8test(a, b, 60)
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b = a / 64
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i8test(a, b, 64)
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b = a / 127
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i8test(a, b, 127)
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b = a / -1
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i8test(a, b, -1)
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b = a / -2
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i8test(a, b, -2)
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b = a / -3
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i8test(a, b, -3)
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b = a / -4
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i8test(a, b, -4)
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b = a / -5
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i8test(a, b, -5)
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b = a / -6
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i8test(a, b, -6)
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b = a / -7
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i8test(a, b, -7)
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b = a / -8
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i8test(a, b, -8)
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b = a / -10
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i8test(a, b, -10)
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b = a / -8
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i8test(a, b, -8)
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b = a / -20
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i8test(a, b, -20)
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b = a / -32
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i8test(a, b, -32)
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b = a / -60
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i8test(a, b, -60)
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b = a / -64
|
|
i8test(a, b, -64)
|
|
b = a / -128
|
|
i8test(a, b, -128)
|
|
}
|
|
}
|
|
|
|
func u8rand() uint8 {
|
|
a := uint8(rand.Uint32())
|
|
a >>= uint(rand.Intn(8))
|
|
return a
|
|
}
|
|
|
|
func u8test(a, b, c uint8) {
|
|
d := a / c
|
|
if d != b {
|
|
println("u8", a, b, c, d)
|
|
panic("fail")
|
|
}
|
|
}
|
|
|
|
func u8run() {
|
|
var a, b uint8
|
|
|
|
for i := 0; i < Count; i++ {
|
|
a = u8rand()
|
|
|
|
b = a / 1
|
|
u8test(a, b, 1)
|
|
b = a / 2
|
|
u8test(a, b, 2)
|
|
b = a / 3
|
|
u8test(a, b, 3)
|
|
b = a / 4
|
|
u8test(a, b, 4)
|
|
b = a / 5
|
|
u8test(a, b, 5)
|
|
b = a / 6
|
|
u8test(a, b, 6)
|
|
b = a / 7
|
|
u8test(a, b, 7)
|
|
b = a / 8
|
|
u8test(a, b, 8)
|
|
b = a / 10
|
|
u8test(a, b, 10)
|
|
b = a / 8
|
|
u8test(a, b, 8)
|
|
b = a / 20
|
|
u8test(a, b, 20)
|
|
b = a / 32
|
|
u8test(a, b, 32)
|
|
b = a / 60
|
|
u8test(a, b, 60)
|
|
b = a / 64
|
|
u8test(a, b, 64)
|
|
b = a / 128
|
|
u8test(a, b, 128)
|
|
b = a / 184
|
|
u8test(a, b, 184)
|
|
}
|
|
}
|
|
|
|
func main() {
|
|
xtest()
|
|
i64run()
|
|
u64run()
|
|
i32run()
|
|
u32run()
|
|
i16run()
|
|
u16run()
|
|
i8run()
|
|
u8run()
|
|
}
|
|
|
|
func xtest() {
|
|
}
|