ff5f50c52c
Update to current version of Go library. Update testsuite for removed types. * go-lang.c (go_langhook_init): Omit float_type_size when calling go_create_gogo. * go-c.h: Update declaration of go_create_gogo. From-SVN: r169098
283 lines
7.6 KiB
Go
283 lines
7.6 KiB
Go
// Copyright 2010 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.
|
|
|
|
package big
|
|
|
|
import "testing"
|
|
|
|
|
|
var setStringTests = []struct {
|
|
in, out string
|
|
ok bool
|
|
}{
|
|
{"0", "0", true},
|
|
{"-0", "0", true},
|
|
{"1", "1", true},
|
|
{"-1", "-1", true},
|
|
{"1.", "1", true},
|
|
{"1e0", "1", true},
|
|
{"1.e1", "10", true},
|
|
{in: "1e", ok: false},
|
|
{in: "1.e", ok: false},
|
|
{in: "1e+14e-5", ok: false},
|
|
{in: "1e4.5", ok: false},
|
|
{in: "r", ok: false},
|
|
{in: "a/b", ok: false},
|
|
{in: "a.b", ok: false},
|
|
{"-0.1", "-1/10", true},
|
|
{"-.1", "-1/10", true},
|
|
{"2/4", "1/2", true},
|
|
{".25", "1/4", true},
|
|
{"-1/5", "-1/5", true},
|
|
{"8129567.7690E14", "812956776900000000000", true},
|
|
{"78189e+4", "781890000", true},
|
|
{"553019.8935e+8", "55301989350000", true},
|
|
{"98765432109876543210987654321e-10", "98765432109876543210987654321/10000000000", true},
|
|
{"9877861857500000E-7", "3951144743/4", true},
|
|
{"2169378.417e-3", "2169378417/1000000", true},
|
|
{"884243222337379604041632732738665534", "884243222337379604041632732738665534", true},
|
|
{"53/70893980658822810696", "53/70893980658822810696", true},
|
|
{"106/141787961317645621392", "53/70893980658822810696", true},
|
|
{"204211327800791583.81095", "4084226556015831676219/20000", true},
|
|
}
|
|
|
|
func TestRatSetString(t *testing.T) {
|
|
for i, test := range setStringTests {
|
|
x, ok := new(Rat).SetString(test.in)
|
|
|
|
if ok != test.ok || ok && x.RatString() != test.out {
|
|
t.Errorf("#%d got %s want %s", i, x.RatString(), test.out)
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
var floatStringTests = []struct {
|
|
in string
|
|
prec int
|
|
out string
|
|
}{
|
|
{"0", 0, "0"},
|
|
{"0", 4, "0"},
|
|
{"1", 0, "1"},
|
|
{"1", 2, "1"},
|
|
{"-1", 0, "-1"},
|
|
{".25", 2, "0.25"},
|
|
{".25", 1, "0.3"},
|
|
{"-1/3", 3, "-0.333"},
|
|
{"-2/3", 4, "-0.6667"},
|
|
{"0.96", 1, "1.0"},
|
|
{"0.999", 2, "1.00"},
|
|
{"0.9", 0, "1"},
|
|
{".25", -1, "0"},
|
|
{".55", -1, "1"},
|
|
}
|
|
|
|
func TestFloatString(t *testing.T) {
|
|
for i, test := range floatStringTests {
|
|
x, _ := new(Rat).SetString(test.in)
|
|
|
|
if x.FloatString(test.prec) != test.out {
|
|
t.Errorf("#%d got %s want %s", i, x.FloatString(test.prec), test.out)
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
func TestRatSign(t *testing.T) {
|
|
zero := NewRat(0, 1)
|
|
for _, a := range setStringTests {
|
|
var x Rat
|
|
x.SetString(a.in)
|
|
s := x.Sign()
|
|
e := x.Cmp(zero)
|
|
if s != e {
|
|
t.Errorf("got %d; want %d for z = %v", s, e, &x)
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
var ratCmpTests = []struct {
|
|
rat1, rat2 string
|
|
out int
|
|
}{
|
|
{"0", "0/1", 0},
|
|
{"1/1", "1", 0},
|
|
{"-1", "-2/2", 0},
|
|
{"1", "0", 1},
|
|
{"0/1", "1/1", -1},
|
|
{"-5/1434770811533343057144", "-5/1434770811533343057145", -1},
|
|
{"49832350382626108453/8964749413", "49832350382626108454/8964749413", -1},
|
|
{"-37414950961700930/7204075375675961", "37414950961700930/7204075375675961", -1},
|
|
{"37414950961700930/7204075375675961", "74829901923401860/14408150751351922", 0},
|
|
}
|
|
|
|
func TestRatCmp(t *testing.T) {
|
|
for i, test := range ratCmpTests {
|
|
x, _ := new(Rat).SetString(test.rat1)
|
|
y, _ := new(Rat).SetString(test.rat2)
|
|
|
|
out := x.Cmp(y)
|
|
if out != test.out {
|
|
t.Errorf("#%d got out = %v; want %v", i, out, test.out)
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
func TestIsInt(t *testing.T) {
|
|
one := NewInt(1)
|
|
for _, a := range setStringTests {
|
|
var x Rat
|
|
x.SetString(a.in)
|
|
i := x.IsInt()
|
|
e := x.Denom().Cmp(one) == 0
|
|
if i != e {
|
|
t.Errorf("got %v; want %v for z = %v", i, e, &x)
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
func TestRatAbs(t *testing.T) {
|
|
zero := NewRat(0, 1)
|
|
for _, a := range setStringTests {
|
|
var z Rat
|
|
z.SetString(a.in)
|
|
var e Rat
|
|
e.Set(&z)
|
|
if e.Cmp(zero) < 0 {
|
|
e.Sub(zero, &e)
|
|
}
|
|
z.Abs(&z)
|
|
if z.Cmp(&e) != 0 {
|
|
t.Errorf("got z = %v; want %v", &z, &e)
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
type ratBinFun func(z, x, y *Rat) *Rat
|
|
type ratBinArg struct {
|
|
x, y, z string
|
|
}
|
|
|
|
func testRatBin(t *testing.T, i int, name string, f ratBinFun, a ratBinArg) {
|
|
x, _ := NewRat(0, 1).SetString(a.x)
|
|
y, _ := NewRat(0, 1).SetString(a.y)
|
|
z, _ := NewRat(0, 1).SetString(a.z)
|
|
out := f(NewRat(0, 1), x, y)
|
|
|
|
if out.Cmp(z) != 0 {
|
|
t.Errorf("%s #%d got %s want %s", name, i, out, z)
|
|
}
|
|
}
|
|
|
|
|
|
var ratBinTests = []struct {
|
|
x, y string
|
|
sum, prod string
|
|
}{
|
|
{"0", "0", "0", "0"},
|
|
{"0", "1", "1", "0"},
|
|
{"-1", "0", "-1", "0"},
|
|
{"-1", "1", "0", "-1"},
|
|
{"1", "1", "2", "1"},
|
|
{"1/2", "1/2", "1", "1/4"},
|
|
{"1/4", "1/3", "7/12", "1/12"},
|
|
{"2/5", "-14/3", "-64/15", "-28/15"},
|
|
{"4707/49292519774798173060", "-3367/70976135186689855734", "84058377121001851123459/1749296273614329067191168098769082663020", "-1760941/388732505247628681598037355282018369560"},
|
|
{"-61204110018146728334/3", "-31052192278051565633/2", "-215564796870448153567/6", "950260896245257153059642991192710872711/3"},
|
|
{"-854857841473707320655/4237645934602118692642972629634714039", "-18/31750379913563777419", "-27/133467566250814981", "15387441146526731771790/134546868362786310073779084329032722548987800600710485341"},
|
|
{"618575745270541348005638912139/19198433543745179392300736", "-19948846211000086/637313996471", "27674141753240653/30123979153216", "-6169936206128396568797607742807090270137721977/6117715203873571641674006593837351328"},
|
|
{"-3/26206484091896184128", "5/2848423294177090248", "15310893822118706237/9330894968229805033368778458685147968", "-5/24882386581946146755650075889827061248"},
|
|
{"26946729/330400702820", "41563965/225583428284", "1238218672302860271/4658307703098666660055", "224002580204097/14906584649915733312176"},
|
|
{"-8259900599013409474/7", "-84829337473700364773/56707961321161574960", "-468402123685491748914621885145127724451/396955729248131024720", "350340947706464153265156004876107029701/198477864624065512360"},
|
|
{"575775209696864/1320203974639986246357", "29/712593081308", "410331716733912717985762465/940768218243776489278275419794956", "808/45524274987585732633"},
|
|
{"1786597389946320496771/2066653520653241", "6269770/1992362624741777", "3559549865190272133656109052308126637/4117523232840525481453983149257", "8967230/3296219033"},
|
|
{"-36459180403360509753/32150500941194292113930", "9381566963714/9633539", "301622077145533298008420642898530153/309723104686531919656937098270", "-3784609207827/3426986245"},
|
|
}
|
|
|
|
func TestRatBin(t *testing.T) {
|
|
for i, test := range ratBinTests {
|
|
arg := ratBinArg{test.x, test.y, test.sum}
|
|
testRatBin(t, i, "Add", (*Rat).Add, arg)
|
|
|
|
arg = ratBinArg{test.y, test.x, test.sum}
|
|
testRatBin(t, i, "Add symmetric", (*Rat).Add, arg)
|
|
|
|
arg = ratBinArg{test.sum, test.x, test.y}
|
|
testRatBin(t, i, "Sub", (*Rat).Sub, arg)
|
|
|
|
arg = ratBinArg{test.sum, test.y, test.x}
|
|
testRatBin(t, i, "Sub symmetric", (*Rat).Sub, arg)
|
|
|
|
arg = ratBinArg{test.x, test.y, test.prod}
|
|
testRatBin(t, i, "Mul", (*Rat).Mul, arg)
|
|
|
|
arg = ratBinArg{test.y, test.x, test.prod}
|
|
testRatBin(t, i, "Mul symmetric", (*Rat).Mul, arg)
|
|
|
|
if test.x != "0" {
|
|
arg = ratBinArg{test.prod, test.x, test.y}
|
|
testRatBin(t, i, "Quo", (*Rat).Quo, arg)
|
|
}
|
|
|
|
if test.y != "0" {
|
|
arg = ratBinArg{test.prod, test.y, test.x}
|
|
testRatBin(t, i, "Quo symmetric", (*Rat).Quo, arg)
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
func TestIssue820(t *testing.T) {
|
|
x := NewRat(3, 1)
|
|
y := NewRat(2, 1)
|
|
z := y.Quo(x, y)
|
|
q := NewRat(3, 2)
|
|
if z.Cmp(q) != 0 {
|
|
t.Errorf("got %s want %s", z, q)
|
|
}
|
|
|
|
y = NewRat(3, 1)
|
|
x = NewRat(2, 1)
|
|
z = y.Quo(x, y)
|
|
q = NewRat(2, 3)
|
|
if z.Cmp(q) != 0 {
|
|
t.Errorf("got %s want %s", z, q)
|
|
}
|
|
|
|
x = NewRat(3, 1)
|
|
z = x.Quo(x, x)
|
|
q = NewRat(3, 3)
|
|
if z.Cmp(q) != 0 {
|
|
t.Errorf("got %s want %s", z, q)
|
|
}
|
|
}
|
|
|
|
|
|
var setFrac64Tests = []struct {
|
|
a, b int64
|
|
out string
|
|
}{
|
|
{0, 1, "0"},
|
|
{0, -1, "0"},
|
|
{1, 1, "1"},
|
|
{-1, 1, "-1"},
|
|
{1, -1, "-1"},
|
|
{-1, -1, "1"},
|
|
{-9223372036854775808, -9223372036854775808, "1"},
|
|
}
|
|
|
|
func TestRatSetFrac64Rat(t *testing.T) {
|
|
for i, test := range setFrac64Tests {
|
|
x := new(Rat).SetFrac64(test.a, test.b)
|
|
if x.RatString() != test.out {
|
|
t.Errorf("#%d got %s want %s", i, x.RatString(), test.out)
|
|
}
|
|
}
|
|
}
|