Initial commit: Go 1.23 release state

test/ken/modconst.go

@@ -0,0 +1,634 @@
+// 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() {
+}