1 // Copyright 2011 the V8 project authors. All rights reserved.
2
3 #include <stdlib.h>
4
5 #include "v8.h"
6
7 #include "platform.h"
8 #include "cctest.h"
9
10 using namespace v8::internal;
11
12
TEST(Hex)13 TEST(Hex) {
14 UnicodeCache uc;
15 CHECK_EQ(0.0, StringToDouble(&uc, "0x0", ALLOW_HEX | ALLOW_OCTALS));
16 CHECK_EQ(0.0, StringToDouble(&uc, "0X0", ALLOW_HEX | ALLOW_OCTALS));
17 CHECK_EQ(1.0, StringToDouble(&uc, "0x1", ALLOW_HEX | ALLOW_OCTALS));
18 CHECK_EQ(16.0, StringToDouble(&uc, "0x10", ALLOW_HEX | ALLOW_OCTALS));
19 CHECK_EQ(255.0, StringToDouble(&uc, "0xff", ALLOW_HEX | ALLOW_OCTALS));
20 CHECK_EQ(175.0, StringToDouble(&uc, "0xAF", ALLOW_HEX | ALLOW_OCTALS));
21
22 CHECK_EQ(0.0, StringToDouble(&uc, "0x0", ALLOW_HEX));
23 CHECK_EQ(0.0, StringToDouble(&uc, "0X0", ALLOW_HEX));
24 CHECK_EQ(1.0, StringToDouble(&uc, "0x1", ALLOW_HEX));
25 CHECK_EQ(16.0, StringToDouble(&uc, "0x10", ALLOW_HEX));
26 CHECK_EQ(255.0, StringToDouble(&uc, "0xff", ALLOW_HEX));
27 CHECK_EQ(175.0, StringToDouble(&uc, "0xAF", ALLOW_HEX));
28 }
29
30
TEST(Octal)31 TEST(Octal) {
32 UnicodeCache uc;
33 CHECK_EQ(0.0, StringToDouble(&uc, "0", ALLOW_HEX | ALLOW_OCTALS));
34 CHECK_EQ(0.0, StringToDouble(&uc, "00", ALLOW_HEX | ALLOW_OCTALS));
35 CHECK_EQ(1.0, StringToDouble(&uc, "01", ALLOW_HEX | ALLOW_OCTALS));
36 CHECK_EQ(7.0, StringToDouble(&uc, "07", ALLOW_HEX | ALLOW_OCTALS));
37 CHECK_EQ(8.0, StringToDouble(&uc, "010", ALLOW_HEX | ALLOW_OCTALS));
38 CHECK_EQ(63.0, StringToDouble(&uc, "077", ALLOW_HEX | ALLOW_OCTALS));
39
40 CHECK_EQ(0.0, StringToDouble(&uc, "0", ALLOW_HEX));
41 CHECK_EQ(0.0, StringToDouble(&uc, "00", ALLOW_HEX));
42 CHECK_EQ(1.0, StringToDouble(&uc, "01", ALLOW_HEX));
43 CHECK_EQ(7.0, StringToDouble(&uc, "07", ALLOW_HEX));
44 CHECK_EQ(10.0, StringToDouble(&uc, "010", ALLOW_HEX));
45 CHECK_EQ(77.0, StringToDouble(&uc, "077", ALLOW_HEX));
46
47 const double x = 010000000000; // Power of 2, no rounding errors.
48 CHECK_EQ(x * x * x * x * x, StringToDouble(&uc, "01" "0000000000" "0000000000"
49 "0000000000" "0000000000" "0000000000", ALLOW_OCTALS));
50 }
51
52
TEST(MalformedOctal)53 TEST(MalformedOctal) {
54 UnicodeCache uc;
55 CHECK_EQ(8.0, StringToDouble(&uc, "08", ALLOW_HEX | ALLOW_OCTALS));
56 CHECK_EQ(81.0, StringToDouble(&uc, "081", ALLOW_HEX | ALLOW_OCTALS));
57 CHECK_EQ(78.0, StringToDouble(&uc, "078", ALLOW_HEX | ALLOW_OCTALS));
58
59 CHECK(isnan(StringToDouble(&uc, "07.7", ALLOW_HEX | ALLOW_OCTALS)));
60 CHECK(isnan(StringToDouble(&uc, "07.8", ALLOW_HEX | ALLOW_OCTALS)));
61 CHECK(isnan(StringToDouble(&uc, "07e8", ALLOW_HEX | ALLOW_OCTALS)));
62 CHECK(isnan(StringToDouble(&uc, "07e7", ALLOW_HEX | ALLOW_OCTALS)));
63
64 CHECK_EQ(8.7, StringToDouble(&uc, "08.7", ALLOW_HEX | ALLOW_OCTALS));
65 CHECK_EQ(8e7, StringToDouble(&uc, "08e7", ALLOW_HEX | ALLOW_OCTALS));
66
67 CHECK_EQ(0.001, StringToDouble(&uc, "0.001", ALLOW_HEX | ALLOW_OCTALS));
68 CHECK_EQ(0.713, StringToDouble(&uc, "0.713", ALLOW_HEX | ALLOW_OCTALS));
69
70 CHECK_EQ(8.0, StringToDouble(&uc, "08", ALLOW_HEX));
71 CHECK_EQ(81.0, StringToDouble(&uc, "081", ALLOW_HEX));
72 CHECK_EQ(78.0, StringToDouble(&uc, "078", ALLOW_HEX));
73
74 CHECK_EQ(7.7, StringToDouble(&uc, "07.7", ALLOW_HEX));
75 CHECK_EQ(7.8, StringToDouble(&uc, "07.8", ALLOW_HEX));
76 CHECK_EQ(7e8, StringToDouble(&uc, "07e8", ALLOW_HEX));
77 CHECK_EQ(7e7, StringToDouble(&uc, "07e7", ALLOW_HEX));
78
79 CHECK_EQ(8.7, StringToDouble(&uc, "08.7", ALLOW_HEX));
80 CHECK_EQ(8e7, StringToDouble(&uc, "08e7", ALLOW_HEX));
81
82 CHECK_EQ(0.001, StringToDouble(&uc, "0.001", ALLOW_HEX));
83 CHECK_EQ(0.713, StringToDouble(&uc, "0.713", ALLOW_HEX));
84 }
85
86
TEST(TrailingJunk)87 TEST(TrailingJunk) {
88 UnicodeCache uc;
89 CHECK_EQ(8.0, StringToDouble(&uc, "8q", ALLOW_TRAILING_JUNK));
90 CHECK_EQ(63.0,
91 StringToDouble(&uc, "077qqq", ALLOW_OCTALS | ALLOW_TRAILING_JUNK));
92 CHECK_EQ(10.0,
93 StringToDouble(&uc, "10e", ALLOW_OCTALS | ALLOW_TRAILING_JUNK));
94 CHECK_EQ(10.0,
95 StringToDouble(&uc, "10e-", ALLOW_OCTALS | ALLOW_TRAILING_JUNK));
96 }
97
98
TEST(NonStrDecimalLiteral)99 TEST(NonStrDecimalLiteral) {
100 UnicodeCache uc;
101 CHECK(isnan(StringToDouble(&uc, " ", NO_FLAGS, OS::nan_value())));
102 CHECK(isnan(StringToDouble(&uc, "", NO_FLAGS, OS::nan_value())));
103 CHECK(isnan(StringToDouble(&uc, " ", NO_FLAGS, OS::nan_value())));
104 CHECK_EQ(0.0, StringToDouble(&uc, "", NO_FLAGS));
105 CHECK_EQ(0.0, StringToDouble(&uc, " ", NO_FLAGS));
106 }
107
TEST(IntegerStrLiteral)108 TEST(IntegerStrLiteral) {
109 UnicodeCache uc;
110 CHECK_EQ(0.0, StringToDouble(&uc, "0.0", NO_FLAGS));
111 CHECK_EQ(0.0, StringToDouble(&uc, "0", NO_FLAGS));
112 CHECK_EQ(0.0, StringToDouble(&uc, "00", NO_FLAGS));
113 CHECK_EQ(0.0, StringToDouble(&uc, "000", NO_FLAGS));
114 CHECK_EQ(1.0, StringToDouble(&uc, "1", NO_FLAGS));
115 CHECK_EQ(-1.0, StringToDouble(&uc, "-1", NO_FLAGS));
116 CHECK_EQ(-1.0, StringToDouble(&uc, " -1 ", NO_FLAGS));
117 CHECK_EQ(1.0, StringToDouble(&uc, " +1 ", NO_FLAGS));
118 CHECK(isnan(StringToDouble(&uc, " - 1 ", NO_FLAGS)));
119 CHECK(isnan(StringToDouble(&uc, " + 1 ", NO_FLAGS)));
120
121 CHECK_EQ(0.0, StringToDouble(&uc, "0e0", ALLOW_HEX | ALLOW_OCTALS));
122 CHECK_EQ(0.0, StringToDouble(&uc, "0e1", ALLOW_HEX | ALLOW_OCTALS));
123 CHECK_EQ(0.0, StringToDouble(&uc, "0e-1", ALLOW_HEX | ALLOW_OCTALS));
124 CHECK_EQ(0.0, StringToDouble(&uc, "0e-100000", ALLOW_HEX | ALLOW_OCTALS));
125 CHECK_EQ(0.0, StringToDouble(&uc, "0e+100000", ALLOW_HEX | ALLOW_OCTALS));
126 CHECK_EQ(0.0, StringToDouble(&uc, "0.", ALLOW_HEX | ALLOW_OCTALS));
127 }
128
TEST(LongNumberStr)129 TEST(LongNumberStr) {
130 UnicodeCache uc;
131 CHECK_EQ(1e10, StringToDouble(&uc, "1" "0000000000", NO_FLAGS));
132 CHECK_EQ(1e20, StringToDouble(&uc, "1" "0000000000" "0000000000", NO_FLAGS));
133
134 CHECK_EQ(1e60, StringToDouble(&uc, "1" "0000000000" "0000000000" "0000000000"
135 "0000000000" "0000000000" "0000000000", NO_FLAGS));
136
137 CHECK_EQ(1e-2, StringToDouble(&uc, "." "0" "1", NO_FLAGS));
138 CHECK_EQ(1e-11, StringToDouble(&uc, "." "0000000000" "1", NO_FLAGS));
139 CHECK_EQ(1e-21, StringToDouble(&uc, "." "0000000000" "0000000000" "1",
140 NO_FLAGS));
141
142 CHECK_EQ(1e-61, StringToDouble(&uc, "." "0000000000" "0000000000" "0000000000"
143 "0000000000" "0000000000" "0000000000" "1", NO_FLAGS));
144
145
146 // x = 24414062505131248.0 and y = 24414062505131252.0 are representable in
147 // double. Check chat z = (x + y) / 2 is rounded to x...
148 CHECK_EQ(24414062505131248.0,
149 StringToDouble(&uc, "24414062505131250.0", NO_FLAGS));
150
151 // ... and z = (x + y) / 2 + delta is rounded to y.
152 CHECK_EQ(24414062505131252.0,
153 StringToDouble(&uc, "24414062505131250.000000001", NO_FLAGS));
154 }
155
156
TEST(MaximumSignificantDigits)157 TEST(MaximumSignificantDigits) {
158 UnicodeCache uc;
159 char num[] =
160 "4.4501477170144020250819966727949918635852426585926051135169509"
161 "122872622312493126406953054127118942431783801370080830523154578"
162 "251545303238277269592368457430440993619708911874715081505094180"
163 "604803751173783204118519353387964161152051487413083163272520124"
164 "606023105869053620631175265621765214646643181420505164043632222"
165 "668006474326056011713528291579642227455489682133472873831754840"
166 "341397809846934151055619529382191981473003234105366170879223151"
167 "087335413188049110555339027884856781219017754500629806224571029"
168 "581637117459456877330110324211689177656713705497387108207822477"
169 "584250967061891687062782163335299376138075114200886249979505279"
170 "101870966346394401564490729731565935244123171539810221213221201"
171 "847003580761626016356864581135848683152156368691976240370422601"
172 "6998291015625000000000000000000000000000000000e-308";
173
174 CHECK_EQ(4.4501477170144017780491e-308, StringToDouble(&uc, num, NO_FLAGS));
175
176 // Changes the result of strtod (at least in glibc implementation).
177 num[sizeof(num) - 8] = '1';
178
179 CHECK_EQ(4.4501477170144022721148e-308, StringToDouble(&uc, num, NO_FLAGS));
180 }
181
TEST(MinimumExponent)182 TEST(MinimumExponent) {
183 UnicodeCache uc;
184 // Same test but with different point-position.
185 char num[] =
186 "445014771701440202508199667279499186358524265859260511351695091"
187 "228726223124931264069530541271189424317838013700808305231545782"
188 "515453032382772695923684574304409936197089118747150815050941806"
189 "048037511737832041185193533879641611520514874130831632725201246"
190 "060231058690536206311752656217652146466431814205051640436322226"
191 "680064743260560117135282915796422274554896821334728738317548403"
192 "413978098469341510556195293821919814730032341053661708792231510"
193 "873354131880491105553390278848567812190177545006298062245710295"
194 "816371174594568773301103242116891776567137054973871082078224775"
195 "842509670618916870627821633352993761380751142008862499795052791"
196 "018709663463944015644907297315659352441231715398102212132212018"
197 "470035807616260163568645811358486831521563686919762403704226016"
198 "998291015625000000000000000000000000000000000e-1108";
199
200 CHECK_EQ(4.4501477170144017780491e-308, StringToDouble(&uc, num, NO_FLAGS));
201
202 // Changes the result of strtod (at least in glibc implementation).
203 num[sizeof(num) - 8] = '1';
204
205 CHECK_EQ(4.4501477170144022721148e-308, StringToDouble(&uc, num, NO_FLAGS));
206 }
207
208
TEST(MaximumExponent)209 TEST(MaximumExponent) {
210 UnicodeCache uc;
211 char num[] = "0.16e309";
212
213 CHECK_EQ(1.59999999999999997765e+308, StringToDouble(&uc, num, NO_FLAGS));
214 }
215
216
TEST(ExponentNumberStr)217 TEST(ExponentNumberStr) {
218 UnicodeCache uc;
219 CHECK_EQ(1e1, StringToDouble(&uc, "1e1", NO_FLAGS));
220 CHECK_EQ(1e1, StringToDouble(&uc, "1e+1", NO_FLAGS));
221 CHECK_EQ(1e-1, StringToDouble(&uc, "1e-1", NO_FLAGS));
222 CHECK_EQ(1e100, StringToDouble(&uc, "1e+100", NO_FLAGS));
223 CHECK_EQ(1e-100, StringToDouble(&uc, "1e-100", NO_FLAGS));
224 CHECK_EQ(1e-106, StringToDouble(&uc, ".000001e-100", NO_FLAGS));
225 }
226
227 class OneBit1: public BitField<uint32_t, 0, 1> {};
228 class OneBit2: public BitField<uint32_t, 7, 1> {};
229 class EightBit1: public BitField<uint32_t, 0, 8> {};
230 class EightBit2: public BitField<uint32_t, 13, 8> {};
231
TEST(BitField)232 TEST(BitField) {
233 uint32_t x;
234
235 // One bit bit field can hold values 0 and 1.
236 CHECK(!OneBit1::is_valid(static_cast<uint32_t>(-1)));
237 CHECK(!OneBit2::is_valid(static_cast<uint32_t>(-1)));
238 for (int i = 0; i < 2; i++) {
239 CHECK(OneBit1::is_valid(i));
240 x = OneBit1::encode(i);
241 CHECK_EQ(i, OneBit1::decode(x));
242
243 CHECK(OneBit2::is_valid(i));
244 x = OneBit2::encode(i);
245 CHECK_EQ(i, OneBit2::decode(x));
246 }
247 CHECK(!OneBit1::is_valid(2));
248 CHECK(!OneBit2::is_valid(2));
249
250 // Eight bit bit field can hold values from 0 tp 255.
251 CHECK(!EightBit1::is_valid(static_cast<uint32_t>(-1)));
252 CHECK(!EightBit2::is_valid(static_cast<uint32_t>(-1)));
253 for (int i = 0; i < 256; i++) {
254 CHECK(EightBit1::is_valid(i));
255 x = EightBit1::encode(i);
256 CHECK_EQ(i, EightBit1::decode(x));
257 CHECK(EightBit2::is_valid(i));
258 x = EightBit2::encode(i);
259 CHECK_EQ(i, EightBit2::decode(x));
260 }
261 CHECK(!EightBit1::is_valid(256));
262 CHECK(!EightBit2::is_valid(256));
263 }
264