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go / go / 1d77ff5b6b2ec5679cd847f0e091a827fd1716b7 / . / test / 64bit.go
blob: b014e546c925fdec42a56363748cfc2c05dba5a8 [file] [log] [blame]
// $G $D/$F.go && $L $F.$A && ./$A.out >tmp.go &&
// $G tmp.go && $L tmp.$A && ./$A.out || echo BUG: 64bit
// rm -f tmp.go
// 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.
// Generate test of 64-bit arithmetic.
// Most synthesized routines have different cases for
// constants vs variables and even the generated code has
// different cases for large and small constants,
// so try a good range of inputs.
package main
import (
"bufio";
"fmt";
"os";
)
var bout *bufio.Writer
// 64-bit math without using 64-bit numbers,
// so that we can generate the test program even
// if the compiler has buggy or missing 64-bit support.
type Uint64 struct {
hi uint32;
lo uint32;
}
type Int64 struct {
hi int32;
lo uint32;
}
func (a Uint64) Int64() (c Int64) {
c.hi = int32(a.hi);
c.lo = a.lo;
return;
}
func (a Uint64) Cmp(b Uint64) int {
switch {
case a.hi < b.hi:
return -1
case a.hi > b.hi:
return 1
case a.lo < b.lo:
return -1
case a.lo > b.lo:
return 1
}
return 0;
}
func (a Uint64) LeftShift(b uint) (c Uint64) {
switch {
case b >= 64:
c.hi = 0;
c.lo = 0;
case b >= 32:
c.hi = a.lo << (b - 32);
c.lo = 0;
default:
c.hi = a.hi<<b | a.lo>>(32-b);
c.lo = a.lo << b;
}
return;
}
func (a Uint64) RightShift(b uint) (c Uint64) {
switch {
case b >= 64:
c.hi = 0;
c.lo = a.hi;
case b >= 32:
c.hi = 0;
c.lo = a.hi >> (b - 32);
default:
c.hi = a.hi >> b;
c.lo = a.hi<<(32-b) | a.lo>>b;
}
return;
}
func (a Uint64) LeftShift64(b Uint64) (c Uint64) {
if b.hi != 0 || b.lo >= 64 {
return
}
return a.LeftShift(uint(b.lo));
}
func (a Uint64) RightShift64(b Uint64) (c Uint64) {
if b.hi != 0 || b.lo >= 64 {
return
}
return a.RightShift(uint(b.lo));
}
func (a Uint64) Plus(b Uint64) (c Uint64) {
var carry uint32;
if c.lo = a.lo + b.lo; c.lo < a.lo {
carry = 1
}
c.hi = a.hi + b.hi + carry;
return;
}
func (a Uint64) Minus(b Uint64) (c Uint64) {
var borrow uint32;
if c.lo = a.lo - b.lo; c.lo > a.lo {
borrow = 1
}
c.hi = a.hi - b.hi - borrow;
return;
}
func (a Uint64) Neg() (c Uint64) {
var zero Uint64;
return zero.Minus(a);
}
func (a Uint64) Com() (c Uint64) {
c.hi = ^a.hi;
c.lo = ^a.lo;
return;
}
func (a Uint64) Len() int {
switch {
case a.hi != 0:
for i := 31; i >= 0; i-- {
if a.hi&(1<<uint(i)) != 0 {
return i + 1 + 32
}
}
case a.lo != 0:
for i := 31; i >= 0; i-- {
if a.lo&(1<<uint(i)) != 0 {
return i + 1
}
}
}
return 0;
}
func (a Uint64) HasBit(b uint) bool {
switch {
case b >= 64:
return false
case b >= 32:
return a.hi&(1<<(b-32)) != 0
}
return a.lo&(1<<b) != 0;
}
func (a Uint64) Times(b Uint64) (c Uint64) {
for i := uint(0); i < 64; i++ {
if b.HasBit(i) {
c = c.Plus(a.LeftShift(i))
}
}
return;
}
func (a Uint64) DivMod(b Uint64) (quo, rem Uint64) {
n := a.Len() - b.Len();
if n >= 0 {
b = b.LeftShift(uint(n));
for i := 0; i <= n; i++ {
quo = quo.LeftShift(1);
if b.Cmp(a) <= 0 { // b <= a
quo.lo |= 1;
a = a.Minus(b);
}
b = b.RightShift(1);
}
}
rem = a;
return;
}
func (a Uint64) And(b Uint64) (c Uint64) {
c.hi = a.hi & b.hi;
c.lo = a.lo & b.lo;
return;
}
func (a Uint64) AndNot(b Uint64) (c Uint64) {
c.hi = a.hi &^ b.hi;
c.lo = a.lo &^ b.lo;
return;
}
func (a Uint64) Or(b Uint64) (c Uint64) {
c.hi = a.hi | b.hi;
c.lo = a.lo | b.lo;
return;
}
func (a Uint64) Xor(b Uint64) (c Uint64) {
c.hi = a.hi ^ b.hi;
c.lo = a.lo ^ b.lo;
return;
}
func (a Uint64) String() string { return fmt.Sprintf("%#x%08x", a.hi, a.lo) }
func (a Int64) Uint64() (c Uint64) {
c.hi = uint32(a.hi);
c.lo = a.lo;
return;
}
func (a Int64) Cmp(b Int64) int {
// Same body as Uint64.Cmp,
// but behaves differently
// because hi is uint32 not int32.
switch {
case a.hi < b.hi:
return -1
case a.hi > b.hi:
return 1
case a.lo < b.lo:
return -1
case a.lo > b.lo:
return 1
}
return 0;
}
func (a Int64) LeftShift(b uint) (c Int64) { return a.Uint64().LeftShift(b).Int64() }
func (a Int64) RightShift(b uint) (c Int64) {
switch {
case b >= 64:
c.hi = a.hi >> 31; // sign extend
c.lo = uint32(c.hi);
case b >= 32:
c.hi = a.hi >> 31; // sign extend
c.lo = uint32(a.hi >> (b - 32));
default:
c.hi = a.hi >> b;
c.lo = uint32(a.hi<<(32-b)) | a.lo>>b;
}
return;
}
func (a Int64) LeftShift64(b Uint64) (c Int64) {
if b.hi != 0 || b.lo >= 64 {
return
}
return a.LeftShift(uint(b.lo));
}
func (a Int64) RightShift64(b Uint64) (c Int64) {
if b.hi != 0 || b.lo >= 64 {
return a.RightShift(64)
}
return a.RightShift(uint(b.lo));
}
func (a Int64) Plus(b Int64) (c Int64) { return a.Uint64().Plus(b.Uint64()).Int64() }
func (a Int64) Minus(b Int64) (c Int64) { return a.Uint64().Minus(b.Uint64()).Int64() }
func (a Int64) Neg() (c Int64) { return a.Uint64().Neg().Int64() }
func (a Int64) Com() (c Int64) { return a.Uint64().Com().Int64() }
func (a Int64) Times(b Int64) (c Int64) { return a.Uint64().Times(b.Uint64()).Int64() }
func (a Int64) DivMod(b Int64) (quo Int64, rem Int64) {
var zero Int64;
quoSign := +1;
remSign := +1;
if a.Cmp(zero) < 0 {
quoSign = -1;
remSign = -1;
a = a.Neg();
}
if b.Cmp(zero) < 0 {
quoSign = -quoSign;
b = b.Neg();
}
q, r := a.Uint64().DivMod(b.Uint64());
quo = q.Int64();
rem = r.Int64();
if quoSign < 0 {
quo = quo.Neg()
}
if remSign < 0 {
rem = rem.Neg()
}
return;
}
func (a Int64) And(b Int64) (c Int64) { return a.Uint64().And(b.Uint64()).Int64() }
func (a Int64) AndNot(b Int64) (c Int64) { return a.Uint64().AndNot(b.Uint64()).Int64() }
func (a Int64) Or(b Int64) (c Int64) { return a.Uint64().Or(b.Uint64()).Int64() }
func (a Int64) Xor(b Int64) (c Int64) { return a.Uint64().Xor(b.Uint64()).Int64() }
func (a Int64) String() string {
if a.hi < 0 {
return fmt.Sprintf("-%s", a.Neg().Uint64())
}
return a.Uint64().String();
}
var int64Values = []Int64{
Int64{0, 0},
Int64{0, 1},
Int64{0, 2},
Int64{0, 3},
Int64{0, 100},
Int64{0, 10001},
Int64{0, 1<<31 - 1},
Int64{0, 1 << 31},
Int64{0, 1<<31 + 1},
Int64{0, 1<<32 - 1<<30},
Int64{0, 1<<32 - 1},
Int64{1, 0},
Int64{1, 1},
Int64{2, 0},
Int64{1<<31 - 1, 1<<32 - 10000},
Int64{1<<31 - 1, 1<<32 - 1},
Int64{0x789abcde, 0xf0123456},
Int64{-1, 1<<32 - 1},
Int64{-1, 1<<32 - 2},
Int64{-1, 1<<32 - 3},
Int64{-1, 1<<32 - 100},
Int64{-1, 1<<32 - 10001},
Int64{-1, 1<<32 - (1<<31 - 1)},
Int64{-1, 1<<32 - 1<<31},
Int64{-1, 1<<32 - (1<<31 + 1)},
Int64{-1, 1<<32 - (1<<32 - 1<<30)},
Int64{-1, 0},
Int64{-1, 1},
Int64{-2, 0},
Int64{-(1 << 31), 10000},
Int64{-(1 << 31), 1},
Int64{-(1 << 31), 0},
Int64{-0x789abcde, 0xf0123456},
}
var uint64Values = []Uint64{
Uint64{0, 0},
Uint64{0, 1},
Uint64{0, 2},
Uint64{0, 3},
Uint64{0, 100},
Uint64{0, 10001},
Uint64{0, 1<<31 - 1},
Uint64{0, 1 << 31},
Uint64{0, 1<<31 + 1},
Uint64{0, 1<<32 - 1<<30},
Uint64{0, 1<<32 - 1},
Uint64{1, 0},
Uint64{1, 1},
Uint64{2, 0},
Uint64{1<<31 - 1, 1<<32 - 10000},
Uint64{1<<31 - 1, 1<<32 - 1},
Uint64{1<<32 - 1<<30, 0},
Uint64{1<<32 - 1, 0},
Uint64{1<<32 - 1, 1<<32 - 100},
Uint64{1<<32 - 1, 1<<32 - 1},
Uint64{0x789abcde, 0xf0123456},
Uint64{0xfedcba98, 0x76543210},
}
var shiftValues = []Uint64{
Uint64{0, 0},
Uint64{0, 1},
Uint64{0, 2},
Uint64{0, 3},
Uint64{0, 15},
Uint64{0, 16},
Uint64{0, 17},
Uint64{0, 31},
Uint64{0, 32},
Uint64{0, 33},
Uint64{0, 61},
Uint64{0, 62},
Uint64{0, 63},
Uint64{0, 64},
Uint64{0, 65},
Uint64{0, 1<<32 - 1},
Uint64{1, 0},
Uint64{1, 1},
Uint64{1 << 28, 0},
Uint64{1 << 31, 0},
Uint64{1<<32 - 1, 0},
Uint64{1<<32 - 1, 1<<32 - 1},
}
var ntest = 0
// Part 1 is tests of variable operations; generic functions
// called by repetitive code. Could make a table but not worth it.
const prolog = "\n" +
"package main\n" +
"\n" +
"import \"os\"\n" +
"\n" +
"var ok = true\n" +
"\n" +
"func testInt64Unary(a, plus, xor, minus int64) {\n" +
" if n, op, want := +a, `+`, plus; n != want { ok=false; println(`int64`, op, a, `=`, n, `should be`, want); }\n" +
" if n, op, want := ^a, `^`, xor; n != want { ok=false; println(`int64`, op, a, `=`, n, `should be`, want); }\n" +
" if n, op, want := -a, `-`, minus; n != want { ok=false; println(`int64`, op, a, `=`, n, `should be`, want); }\n" +
"}\n" +
"\n" +
"func testInt64Binary(a, b, add, sub, mul, div, mod, and, or, xor, andnot int64, dodiv bool) {\n" +
" if n, op, want := a + b, `+`, add; n != want { ok=false; println(`int64`, a, op, b, `=`, n, `should be`, want); }\n" +
" if n, op, want := a - b, `-`, sub; n != want { ok=false; println(`int64`, a, op, b, `=`, n, `should be`, want); }\n" +
" if n, op, want := a * b, `*`, mul; n != want { ok=false; println(`int64`, a, op, b, `=`, n, `should be`, want); }\n" +
" if dodiv {\n" +
" if n, op, want := a / b, `/`, div; n != want { ok=false; println(`int64`, a, op, b, `=`, n, `should be`, want); }\n" +
" if n, op, want := a % b, `%`, mod; n != want { ok=false; println(`int64`, a, op, b, `=`, n, `should be`, want); }\n" +
" }\n" +
" if n, op, want := a & b, `&`, and; n != want { ok=false; println(`int64`, a, op, b, `=`, n, `should be`, want); }\n" +
" if n, op, want := a | b, `|`, or; n != want { ok=false; println(`int64`, a, op, b, `=`, n, `should be`, want); }\n" +
" if n, op, want := a ^ b, `^`, xor; n != want { ok=false; println(`int64`, a, op, b, `=`, n, `should be`, want); }\n" +
" if n, op, want := a &^ b, `&^`, andnot; n != want { ok=false; println(`int64`, a, op, b, `=`, n, `should be`, want); }\n" +
"}\n" +
"\n" +
"func testInt64Shift(a int64, b uint64, left, right int64) {\n" +
" if n, op, s, want := a << b, `<<`, b, left; n != want { ok=false; println(`int64`, a, op, `uint64`, s, `=`, n, `should be`, want); }\n" +
" if n, op, s, want := a >> b, `>>`, b, right; n != want { ok=false; println(`int64`, a, op, `uint64`, s, `=`, n, `should be`, want); }\n" +
" if uint64(uint(b)) == b {\n" +
" b := uint(b);\n" +
" if n, op, s, want := a << b, `<<`, b, left; n != want { ok=false; println(`int64`, a, op, `uint`, s, `=`, n, `should be`, want); }\n" +
" if n, op, s, want := a >> b, `>>`, b, right; n != want { ok=false; println(`int64`, a, op, `uint`, s, `=`, n, `should be`, want); }\n" +
" }\n" +
" if uint64(uint32(b)) == b {\n" +
" b := uint32(b);\n" +
" if n, op, s, want := a << b, `<<`, b, left; n != want { ok=false; println(`int64`, a, op, `uint32`, s, `=`, n, `should be`, want); }\n" +
" if n, op, s, want := a >> b, `>>`, b, right; n != want { ok=false; println(`int64`, a, op, `uint32`, s, `=`, n, `should be`, want); }\n" +
" }\n" +
" if uint64(uint16(b)) == b {\n" +
" b := uint16(b);\n" +
" if n, op, s, want := a << b, `<<`, b, left; n != want { ok=false; println(`int64`, a, op, `uint16`, s, `=`, n, `should be`, want); }\n" +
" if n, op, s, want := a >> b, `>>`, b, right; n != want { ok=false; println(`int64`, a, op, `uint16`, s, `=`, n, `should be`, want); }\n" +
" }\n" +
" if uint64(uint8(b)) == b {\n" +
" b := uint8(b);\n" +
" if n, op, s, want := a << b, `<<`, b, left; n != want { ok=false; println(`int64`, a, op, `uint8`, s, `=`, n, `should be`, want); }\n" +
" if n, op, s, want := a >> b, `>>`, b, right; n != want { ok=false; println(`int64`, a, op, `uint8`, s, `=`, n, `should be`, want); }\n" +
" }\n" +
"}\n" +
"\n" +
"func testUint64Unary(a, plus, xor, minus uint64) {\n" +
" if n, op, want := +a, `+`, plus; n != want { ok=false; println(`uint64`, op, a, `=`, n, `should be`, want); }\n" +
" if n, op, want := ^a, `^`, xor; n != want { ok=false; println(`uint64`, op, a, `=`, n, `should be`, want); }\n" +
" if n, op, want := -a, `-`, minus; n != want { ok=false; println(`uint64`, op, a, `=`, n, `should be`, want); }\n" +
"}\n" +
"\n" +
"func testUint64Binary(a, b, add, sub, mul, div, mod, and, or, xor, andnot uint64, dodiv bool) {\n" +
" if n, op, want := a + b, `+`, add; n != want { ok=false; println(`uint64`, a, op, b, `=`, n, `should be`, want); }\n" +
" if n, op, want := a - b, `-`, sub; n != want { ok=false; println(`uint64`, a, op, b, `=`, n, `should be`, want); }\n" +
" if n, op, want := a * b, `*`, mul; n != want { ok=false; println(`uint64`, a, op, b, `=`, n, `should be`, want); }\n" +
" if dodiv {\n" +
" if n, op, want := a / b, `/`, div; n != want { ok=false; println(`uint64`, a, op, b, `=`, n, `should be`, want); }\n" +
" if n, op, want := a % b, `%`, mod; n != want { ok=false; println(`uint64`, a, op, b, `=`, n, `should be`, want); }\n" +
" }\n" +
" if n, op, want := a & b, `&`, and; n != want { ok=false; println(`uint64`, a, op, b, `=`, n, `should be`, want); }\n" +
" if n, op, want := a | b, `|`, or; n != want { ok=false; println(`uint64`, a, op, b, `=`, n, `should be`, want); }\n" +
" if n, op, want := a ^ b, `^`, xor; n != want { ok=false; println(`uint64`, a, op, b, `=`, n, `should be`, want); }\n" +
" if n, op, want := a &^ b, `&^`, andnot; n != want { ok=false; println(`uint64`, a, op, b, `=`, n, `should be`, want); }\n" +
"}\n" +
"\n" +
"func testUint64Shift(a, b, left, right uint64) {\n" +
" if n, op, s, want := a << b, `<<`, b, left; n != want { ok=false; println(`uint64`, a, op, `uint64`, s, `=`, n, `should be`, want); }\n" +
" if n, op, s, want := a >> b, `>>`, b, right; n != want { ok=false; println(`uint64`, a, op, `uint64`, s, `=`, n, `should be`, want); }\n" +
" if uint64(uint(b)) == b {\n" +
" b := uint(b);\n" +
" if n, op, s, want := a << b, `<<`, b, left; n != want { ok=false; println(`uint64`, a, op, `uint`, s, `=`, n, `should be`, want); }\n" +
" if n, op, s, want := a >> b, `>>`, b, right; n != want { ok=false; println(`uint64`, a, op, `uint`, s, `=`, n, `should be`, want); }\n" +
" }\n" +
" if uint64(uint32(b)) == b {\n" +
" b := uint32(b);\n" +
" if n, op, s, want := a << b, `<<`, b, left; n != want { ok=false; println(`uint64`, a, op, `uint32`, s, `=`, n, `should be`, want); }\n" +
" if n, op, s, want := a >> b, `>>`, b, right; n != want { ok=false; println(`uint64`, a, op, `uint32`, s, `=`, n, `should be`, want); }\n" +
" }\n" +
" if uint64(uint16(b)) == b {\n" +
" b := uint16(b);\n" +
" if n, op, s, want := a << b, `<<`, b, left; n != want { ok=false; println(`uint64`, a, op, `uint16`, s, `=`, n, `should be`, want); }\n" +
" if n, op, s, want := a >> b, `>>`, b, right; n != want { ok=false; println(`uint64`, a, op, `uint16`, s, `=`, n, `should be`, want); }\n" +
" }\n" +
" if uint64(uint8(b)) == b {\n" +
" b := uint8(b);\n" +
" if n, op, s, want := a << b, `<<`, b, left; n != want { ok=false; println(`uint64`, a, op, `uint8`, s, `=`, n, `should be`, want); }\n" +
" if n, op, s, want := a >> b, `>>`, b, right; n != want { ok=false; println(`uint64`, a, op, `uint8`, s, `=`, n, `should be`, want); }\n" +
" }\n" +
"}\n" +
"\n"
func varTests() {
fmt.Fprint(bout, prolog);
for _, a := range int64Values {
fmt.Fprintf(bout, "func test%v() {\n", ntest);
ntest++;
fmt.Fprintf(bout, "\ttestInt64Unary(%v, %v, %v, %v);\n", a, a, a.Com(), a.Neg());
for _, b := range int64Values {
var div, mod Int64;
dodiv := false;
var zero Int64;
if b.Cmp(zero) != 0 { // b != 0
// Can't divide by zero but also can't divide -0x8000...000 by -1.
var bigneg = Int64{-0x80000000, 0};
var minus1 = Int64{-1, ^uint32(0)};
if a.Cmp(bigneg) != 0 || b.Cmp(minus1) != 0 { // a != -1<<63 || b != -1
div, mod = a.DivMod(b);
dodiv = true;
}
}
fmt.Fprintf(bout, "\ttestInt64Binary(%v, %v, %v, %v, %v, %v, %v, %v, %v, %v, %v, %v);\n",
a, b, a.Plus(b), a.Minus(b), a.Times(b), div, mod,
a.And(b), a.Or(b), a.Xor(b), a.AndNot(b), dodiv);
}
for _, b := range shiftValues {
fmt.Fprintf(bout, "\ttestInt64Shift(%v, %v, %v, %v);\n",
a, b, a.LeftShift64(b), a.RightShift64(b))
}
fmt.Fprintf(bout, "}\n");
}
for _, a := range uint64Values {
fmt.Fprintf(bout, "func test%v() {\n", ntest);
ntest++;
fmt.Fprintf(bout, "\ttestUint64Unary(%v, %v, %v, %v);\n", a, a, a.Com(), a.Neg());
for _, b := range uint64Values {
var div, mod Uint64;
dodiv := false;
var zero Uint64;
if b.Cmp(zero) != 0 { // b != 0
div, mod = a.DivMod(b);
dodiv = true;
}
fmt.Fprintf(bout, "\ttestUint64Binary(%v, %v, %v, %v, %v, %v, %v, %v, %v, %v, %v, %v);\n",
a, b, a.Plus(b), a.Minus(b), a.Times(b), div, mod,
a.And(b), a.Or(b), a.Xor(b), a.AndNot(b), dodiv);
}
for _, b := range shiftValues {
fmt.Fprintf(bout, "\ttestUint64Shift(%v, %v, %v, %v);\n",
a, b, a.LeftShift64(b), a.RightShift64(b))
}
fmt.Fprintf(bout, "}\n");
}
}
// Part 2 is tests of operations involving one variable and one constant.
const binaryConstL = "func test%vBinaryL%v(b, add, sub, mul, div, mod, and, or, xor, andnot %v, dodiv bool) {\n" +
" const a %v = %v;\n" +
" const typ = `%s`;\n" +
" if n, op, want := a + b, `+`, add; n != want { ok=false; println(typ, `const`, a, op, `var`, b, `=`, n, `should be`, want); }\n" +
" if n, op, want := a - b, `-`, sub; n != want { ok=false; println(typ, `const`, a, op, `var`, b, `=`, n, `should be`, want); }\n" +
" if n, op, want := a * b, `*`, mul; n != want { ok=false; println(typ, `const`, a, op, `var`, b, `=`, n, `should be`, want); }\n" +
" if dodiv {\n" +
" if n, op, want := a / b, `/`, div; n != want { ok=false; println(typ, `const`, a, op, `var`, b, `=`, n, `should be`, want); }\n" +
" if n, op, want := a %% b, `%%`, mod; n != want { ok=false; println(typ, `const`, a, op, `var`, b, `=`, n, `should be`, want); }\n" +
" }\n" +
" if n, op, want := a & b, `&`, and; n != want { ok=false; println(typ, `const`, a, op, `var`, b, `=`, n, `should be`, want); }\n" +
" if n, op, want := a | b, `|`, or; n != want { ok=false; println(typ, `const`, a, op, `var`, b, `=`, n, `should be`, want); }\n" +
" if n, op, want := a ^ b, `^`, xor; n != want { ok=false; println(typ, `const`, a, op, `var`, b, `=`, n, `should be`, want); }\n" +
" if n, op, want := a &^ b, `&^`, andnot; n != want { ok=false; println(typ, `const`, a, op, `var`, b, `=`, n, `should be`, want); }\n" +
"}\n" +
"\n"
const binaryConstR = "func test%vBinaryR%v(a, add, sub, mul, div, mod, and, or, xor, andnot %v, dodiv bool) {\n" +
" const b %v = %v;\n" +
" const typ = `%s`;\n" +
" if n, op, want := a + b, `+`, add; n != want { ok=false; println(typ, `var`, a, op, `const`, b, `=`, n, `should be`, want); }\n" +
" if n, op, want := a - b, `-`, sub; n != want { ok=false; println(typ, `var`, a, op, `const`, b, `=`, n, `should be`, want); }\n" +
" if n, op, want := a * b, `*`, mul; n != want { ok=false; println(typ, `var`, a, op, `const`, b, `=`, n, `should be`, want); }\n" +
" if dodiv {\n" +
" if n, op, want := a / b, `/`, div; n != want { ok=false; println(typ, `var`, a, op, `const`, b, `=`, n, `should be`, want); }\n" +
" if n, op, want := a %% b, `%%`, mod; n != want { ok=false; println(typ, `var`, a, op, `const`, b, `=`, n, `should be`, want); }\n" +
" }\n" +
" if n, op, want := a & b, `&`, and; n != want { ok=false; println(typ, `var`, a, op, `const`, b, `=`, n, `should be`, want); }\n" +
" if n, op, want := a | b, `|`, or; n != want { ok=false; println(typ, `var`, a, op, `const`, b, `=`, n, `should be`, want); }\n" +
" if n, op, want := a ^ b, `^`, xor; n != want { ok=false; println(typ, `var`, a, op, `const`, b, `=`, n, `should be`, want); }\n" +
" if n, op, want := a &^ b, `&^`, andnot; n != want { ok=false; println(typ, `var`, a, op, `const`, b, `=`, n, `should be`, want); }\n" +
"}\n" +
"\n"
const shiftConstL = "func test%vShiftL%v(b uint64, left, right %v) {\n" +
" const a %v = %v;\n" +
" const typ = `%s`;\n" +
" if n, op, s, want := a << b, `<<`, b, left; n != want { ok=false; println(typ, `const`, a, op, `var`, s, `=`, n, `should be`, want); }\n" +
" if n, op, s, want := a >> b, `>>`, b, right; n != want { ok=false; println(typ, `const`, a, op, `var`, s, `=`, n, `should be`, want); }\n" +
" if uint64(uint32(b)) == b {\n" +
" b := uint32(b);\n" +
" if n, op, s, want := a << b, `<<`, b, left; n != want { ok=false; println(typ, `const`, a, op, `var`, s, `=`, n, `should be`, want); }\n" +
" if n, op, s, want := a >> b, `>>`, b, right; n != want { ok=false; println(typ, `const`, a, op, `var`, s, `=`, n, `should be`, want); }\n" +
" }\n" +
"}\n"
const shiftConstR = "func test%vShiftR%v(a, left, right %v) {\n" +
" const b uint64 = %v;\n" +
" const typ = `%s`;\n" +
" if n, op, s, want := a << b, `<<`, b, left; n != want { ok=false; println(typ, `var`, a, op, `const`, s, `=`, n, `should be`, want); }\n" +
" if n, op, s, want := a >> b, `>>`, b, right; n != want { ok=false; println(typ, `var`, a, op, `const`, s, `=`, n, `should be`, want); }\n" +
" if b & 0xffffffff == b {\n" +
" const b = uint32(b & 0xffffffff);\n" +
" if n, op, s, want := a << b, `<<`, b, left; n != want { ok=false; println(typ, `var`, a, op, `const`, s, `=`, n, `should be`, want); }\n" +
" if n, op, s, want := a >> b, `>>`, b, right; n != want { ok=false; println(typ, `var`, a, op, `const`, s, `=`, n, `should be`, want); }\n" +
" }\n" +
"}\n"
func constTests() {
for i, a := range int64Values {
fmt.Fprintf(bout, binaryConstL, "Int64", i, "int64", "int64", a, "int64");
fmt.Fprintf(bout, binaryConstR, "Int64", i, "int64", "int64", a, "int64");
fmt.Fprintf(bout, shiftConstL, "Int64", i, "int64", "int64", a, "int64");
}
for i, a := range uint64Values {
fmt.Fprintf(bout, binaryConstL, "Uint64", i, "uint64", "uint64", a, "uint64");
fmt.Fprintf(bout, binaryConstR, "Uint64", i, "uint64", "uint64", a, "uint64");
fmt.Fprintf(bout, shiftConstL, "Uint64", i, "uint64", "uint64", a, "uint64");
}
for i, a := range shiftValues {
fmt.Fprintf(bout, shiftConstR, "Int64", i, "int64", a, "int64");
fmt.Fprintf(bout, shiftConstR, "Uint64", i, "uint64", a, "uint64");
}
for i, a := range int64Values {
fmt.Fprintf(bout, "func test%v() {\n", ntest);
ntest++;
for j, b := range int64Values {
var div, mod Int64;
dodiv := false;
var zero Int64;
if b.Cmp(zero) != 0 { // b != 0
// Can't divide by zero but also can't divide -0x8000...000 by -1.
var bigneg = Int64{-0x80000000, 0};
var minus1 = Int64{-1, ^uint32(0)};
if a.Cmp(bigneg) != 0 || b.Cmp(minus1) != 0 { // a != -1<<63 || b != -1
div, mod = a.DivMod(b);
dodiv = true;
}
}
fmt.Fprintf(bout, "\ttestInt64BinaryL%v(%v, %v, %v, %v, %v, %v, %v, %v, %v, %v, %v);\n",
i, b, a.Plus(b), a.Minus(b), a.Times(b), div, mod,
a.And(b), a.Or(b), a.Xor(b), a.AndNot(b), dodiv);
fmt.Fprintf(bout, "\ttestInt64BinaryR%v(%v, %v, %v, %v, %v, %v, %v, %v, %v, %v, %v);\n",
j, a, a.Plus(b), a.Minus(b), a.Times(b), div, mod,
a.And(b), a.Or(b), a.Xor(b), a.AndNot(b), dodiv);
}
for j, b := range shiftValues {
fmt.Fprintf(bout, "\ttestInt64ShiftL%v(%v, %v, %v);\n",
i, b, a.LeftShift64(b), a.RightShift64(b));
fmt.Fprintf(bout, "\ttestInt64ShiftR%v(%v, %v, %v);\n",
j, a, a.LeftShift64(b), a.RightShift64(b));
}
fmt.Fprintf(bout, "}\n");
}
for i, a := range uint64Values {
fmt.Fprintf(bout, "func test%v() {\n", ntest);
ntest++;
for j, b := range uint64Values {
var div, mod Uint64;
dodiv := false;
var zero Uint64;
if b.Cmp(zero) != 0 { // b != 0
div, mod = a.DivMod(b);
dodiv = true;
}
fmt.Fprintf(bout, "\ttestUint64BinaryL%v(%v, %v, %v, %v, %v, %v, %v, %v, %v, %v, %v);\n",
i, b, a.Plus(b), a.Minus(b), a.Times(b), div, mod,
a.And(b), a.Or(b), a.Xor(b), a.AndNot(b), dodiv);
fmt.Fprintf(bout, "\ttestUint64BinaryR%v(%v, %v, %v, %v, %v, %v, %v, %v, %v, %v, %v);\n",
j, a, a.Plus(b), a.Minus(b), a.Times(b), div, mod,
a.And(b), a.Or(b), a.Xor(b), a.AndNot(b), dodiv);
}
for j, b := range shiftValues {
fmt.Fprintf(bout, "\ttestUint64ShiftL%v(%v, %v, %v);\n",
i, b, a.LeftShift64(b), a.RightShift64(b));
fmt.Fprintf(bout, "\ttestUint64ShiftR%v(%v, %v, %v);\n",
j, a, a.LeftShift64(b), a.RightShift64(b));
}
fmt.Fprintf(bout, "}\n");
}
}
func main() {
bout = bufio.NewWriter(os.Stdout);
varTests();
constTests();
fmt.Fprintf(bout, "func main() {\n");
for i := 0; i < ntest; i++ {
fmt.Fprintf(bout, "\ttest%v();\n", i)
}
fmt.Fprintf(bout, "\tif !ok { os.Exit(1) }\n");
fmt.Fprintf(bout, "}\n");
bout.Flush();
}