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// run
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Test integer modulus by constants.
package main
import "math/rand"
const Count = 1e5
func i64rand() int64 {
for {
a := int64(rand.Uint32())
a = (a << 32) | int64(rand.Uint32())
a >>= uint(rand.Intn(64))
if -a != a {
return a
}
}
return 0 // impossible
}
func i64test(a, b, c int64) {
d := a % c
if d != b {
println("i64", a, b, c, d)
panic("fail")
}
}
func i64run() {
var a, b int64
for i := 0; i < Count; i++ {
a = i64rand()
b = a % 1
i64test(a, b, 1)
b = a % 2
i64test(a, b, 2)
b = a % 3
i64test(a, b, 3)
b = a % 4
i64test(a, b, 4)
b = a % 5
i64test(a, b, 5)
b = a % 6
i64test(a, b, 6)
b = a % 7
i64test(a, b, 7)
b = a % 8
i64test(a, b, 8)
b = a % 10
i64test(a, b, 10)
b = a % 16
i64test(a, b, 16)
b = a % 20
i64test(a, b, 20)
b = a % 32
i64test(a, b, 32)
b = a % 60
i64test(a, b, 60)
b = a % 64
i64test(a, b, 64)
b = a % 128
i64test(a, b, 128)
b = a % 256
i64test(a, b, 256)
b = a % 16384
i64test(a, b, 16384)
b = a % -1
i64test(a, b, -1)
b = a % -2
i64test(a, b, -2)
b = a % -3
i64test(a, b, -3)
b = a % -4
i64test(a, b, -4)
b = a % -5
i64test(a, b, -5)
b = a % -6
i64test(a, b, -6)
b = a % -7
i64test(a, b, -7)
b = a % -8
i64test(a, b, -8)
b = a % -10
i64test(a, b, -10)
b = a % -16
i64test(a, b, -16)
b = a % -20
i64test(a, b, -20)
b = a % -32
i64test(a, b, -32)
b = a % -60
i64test(a, b, -60)
b = a % -64
i64test(a, b, -64)
b = a % -128
i64test(a, b, -128)
b = a % -256
i64test(a, b, -256)
b = a % -16384
i64test(a, b, -16384)
}
}
func u64rand() uint64 {
a := uint64(rand.Uint32())
a = (a << 32) | uint64(rand.Uint32())
a >>= uint(rand.Intn(64))
return a
}
func u64test(a, b, c uint64) {
d := a % c
if d != b {
println("u64", a, b, c, d)
panic("fail")
}
}
func u64run() {
var a, b uint64
for i := 0; i < Count; i++ {
a = u64rand()
b = a % 1
u64test(a, b, 1)
b = a % 2
u64test(a, b, 2)
b = a % 3
u64test(a, b, 3)
b = a % 4
u64test(a, b, 4)
b = a % 5
u64test(a, b, 5)
b = a % 6
u64test(a, b, 6)
b = a % 7
u64test(a, b, 7)
b = a % 8
u64test(a, b, 8)
b = a % 10
u64test(a, b, 10)
b = a % 16
u64test(a, b, 16)
b = a % 20
u64test(a, b, 20)
b = a % 32
u64test(a, b, 32)
b = a % 60
u64test(a, b, 60)
b = a % 64
u64test(a, b, 64)
b = a % 128
u64test(a, b, 128)
b = a % 256
u64test(a, b, 256)
b = a % 16384
u64test(a, b, 16384)
}
}
func i32rand() int32 {
for {
a := int32(rand.Uint32())
a >>= uint(rand.Intn(32))
if -a != a {
return a
}
}
return 0 // impossible
}
func i32test(a, b, c int32) {
d := a % c
if d != b {
println("i32", a, b, c, d)
panic("fail")
}
}
func i32run() {
var a, b int32
for i := 0; i < Count; i++ {
a = i32rand()
b = a % 1
i32test(a, b, 1)
b = a % 2
i32test(a, b, 2)
b = a % 3
i32test(a, b, 3)
b = a % 4
i32test(a, b, 4)
b = a % 5
i32test(a, b, 5)
b = a % 6
i32test(a, b, 6)
b = a % 7
i32test(a, b, 7)
b = a % 8
i32test(a, b, 8)
b = a % 10
i32test(a, b, 10)
b = a % 16
i32test(a, b, 16)
b = a % 20
i32test(a, b, 20)
b = a % 32
i32test(a, b, 32)
b = a % 60
i32test(a, b, 60)
b = a % 64
i32test(a, b, 64)
b = a % 128
i32test(a, b, 128)
b = a % 256
i32test(a, b, 256)
b = a % 16384
i32test(a, b, 16384)
b = a % -1
i32test(a, b, -1)
b = a % -2
i32test(a, b, -2)
b = a % -3
i32test(a, b, -3)
b = a % -4
i32test(a, b, -4)
b = a % -5
i32test(a, b, -5)
b = a % -6
i32test(a, b, -6)
b = a % -7
i32test(a, b, -7)
b = a % -8
i32test(a, b, -8)
b = a % -10
i32test(a, b, -10)
b = a % -16
i32test(a, b, -16)
b = a % -20
i32test(a, b, -20)
b = a % -32
i32test(a, b, -32)
b = a % -60
i32test(a, b, -60)
b = a % -64
i32test(a, b, -64)
b = a % -128
i32test(a, b, -128)
b = a % -256
i32test(a, b, -256)
}
}
func u32rand() uint32 {
a := uint32(rand.Uint32())
a >>= uint(rand.Intn(32))
return a
}
func u32test(a, b, c uint32) {
d := a % c
if d != b {
println("u32", a, b, c, d)
panic("fail")
}
}
func u32run() {
var a, b uint32
for i := 0; i < Count; i++ {
a = u32rand()
b = a % 1
u32test(a, b, 1)
b = a % 2
u32test(a, b, 2)
b = a % 3
u32test(a, b, 3)
b = a % 4
u32test(a, b, 4)
b = a % 5
u32test(a, b, 5)
b = a % 6
u32test(a, b, 6)
b = a % 7
u32test(a, b, 7)
b = a % 8
u32test(a, b, 8)
b = a % 10
u32test(a, b, 10)
b = a % 16
u32test(a, b, 16)
b = a % 20
u32test(a, b, 20)
b = a % 32
u32test(a, b, 32)
b = a % 60
u32test(a, b, 60)
b = a % 64
u32test(a, b, 64)
b = a % 128
u32test(a, b, 128)
b = a % 256
u32test(a, b, 256)
b = a % 16384
u32test(a, b, 16384)
}
}
func i16rand() int16 {
for {
a := int16(rand.Uint32())
a >>= uint(rand.Intn(16))
if -a != a {
return a
}
}
return 0 // impossible
}
func i16test(a, b, c int16) {
d := a % c
if d != b {
println("i16", a, b, c, d)
panic("fail")
}
}
func i16run() {
var a, b int16
for i := 0; i < Count; i++ {
a = i16rand()
b = a % 1
i16test(a, b, 1)
b = a % 2
i16test(a, b, 2)
b = a % 3
i16test(a, b, 3)
b = a % 4
i16test(a, b, 4)
b = a % 5
i16test(a, b, 5)
b = a % 6
i16test(a, b, 6)
b = a % 7
i16test(a, b, 7)
b = a % 8
i16test(a, b, 8)
b = a % 10
i16test(a, b, 10)
b = a % 16
i16test(a, b, 16)
b = a % 20
i16test(a, b, 20)
b = a % 32
i16test(a, b, 32)
b = a % 60
i16test(a, b, 60)
b = a % 64
i16test(a, b, 64)
b = a % 128
i16test(a, b, 128)
b = a % 256
i16test(a, b, 256)
b = a % 16384
i16test(a, b, 16384)
b = a % -1
i16test(a, b, -1)
b = a % -2
i16test(a, b, -2)
b = a % -3
i16test(a, b, -3)
b = a % -4
i16test(a, b, -4)
b = a % -5
i16test(a, b, -5)
b = a % -6
i16test(a, b, -6)
b = a % -7
i16test(a, b, -7)
b = a % -8
i16test(a, b, -8)
b = a % -10
i16test(a, b, -10)
b = a % -16
i16test(a, b, -16)
b = a % -20
i16test(a, b, -20)
b = a % -32
i16test(a, b, -32)
b = a % -60
i16test(a, b, -60)
b = a % -64
i16test(a, b, -64)
b = a % -128
i16test(a, b, -128)
b = a % -256
i16test(a, b, -256)
b = a % -16384
i16test(a, b, -16384)
}
}
func u16rand() uint16 {
a := uint16(rand.Uint32())
a >>= uint(rand.Intn(16))
return a
}
func u16test(a, b, c uint16) {
d := a % c
if d != b {
println("u16", a, b, c, d)
panic("fail")
}
}
func u16run() {
var a, b uint16
for i := 0; i < Count; i++ {
a = u16rand()
b = a % 1
u16test(a, b, 1)
b = a % 2
u16test(a, b, 2)
b = a % 3
u16test(a, b, 3)
b = a % 4
u16test(a, b, 4)
b = a % 5
u16test(a, b, 5)
b = a % 6
u16test(a, b, 6)
b = a % 7
u16test(a, b, 7)
b = a % 8
u16test(a, b, 8)
b = a % 10
u16test(a, b, 10)
b = a % 16
u16test(a, b, 16)
b = a % 20
u16test(a, b, 20)
b = a % 32
u16test(a, b, 32)
b = a % 60
u16test(a, b, 60)
b = a % 64
u16test(a, b, 64)
b = a % 128
u16test(a, b, 128)
b = a % 256
u16test(a, b, 256)
b = a % 16384
u16test(a, b, 16384)
}
}
func i8rand() int8 {
for {
a := int8(rand.Uint32())
a >>= uint(rand.Intn(8))
if -a != a {
return a
}
}
return 0 // impossible
}
func i8test(a, b, c int8) {
d := a % c
if d != b {
println("i8", a, b, c, d)
panic("fail")
}
}
func i8run() {
var a, b int8
for i := 0; i < Count; i++ {
a = i8rand()
b = a % 1
i8test(a, b, 1)
b = a % 2
i8test(a, b, 2)
b = a % 3
i8test(a, b, 3)
b = a % 4
i8test(a, b, 4)
b = a % 5
i8test(a, b, 5)
b = a % 6
i8test(a, b, 6)
b = a % 7
i8test(a, b, 7)
b = a % 8
i8test(a, b, 8)
b = a % 10
i8test(a, b, 10)
b = a % 8
i8test(a, b, 8)
b = a % 20
i8test(a, b, 20)
b = a % 32
i8test(a, b, 32)
b = a % 60
i8test(a, b, 60)
b = a % 64
i8test(a, b, 64)
b = a % 127
i8test(a, b, 127)
b = a % -1
i8test(a, b, -1)
b = a % -2
i8test(a, b, -2)
b = a % -3
i8test(a, b, -3)
b = a % -4
i8test(a, b, -4)
b = a % -5
i8test(a, b, -5)
b = a % -6
i8test(a, b, -6)
b = a % -7
i8test(a, b, -7)
b = a % -8
i8test(a, b, -8)
b = a % -10
i8test(a, b, -10)
b = a % -8
i8test(a, b, -8)
b = a % -20
i8test(a, b, -20)
b = a % -32
i8test(a, b, -32)
b = a % -60
i8test(a, b, -60)
b = a % -64
i8test(a, b, -64)
b = a % -128
i8test(a, b, -128)
b = a % -101
i8test(a, b, -101)
}
}
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 % 127
u8test(a, b, 127)
}
}
func main() {
xtest()
i64run()
u64run()
i32run()
u32run()
i16run()
u16run()
i8run()
u8run()
}
func xtest() {
}