1// Copyright 2011 the V8 project authors. All rights reserved.
2// Redistribution and use in source and binary forms, with or without
3// modification, are permitted provided that the following conditions are
4// met:
5//
6//     * Redistributions of source code must retain the above copyright
7//       notice, this list of conditions and the following disclaimer.
8//     * Redistributions in binary form must reproduce the above
9//       copyright notice, this list of conditions and the following
10//       disclaimer in the documentation and/or other materials provided
11//       with the distribution.
12//     * Neither the name of Google Inc. nor the names of its
13//       contributors may be used to endorse or promote products derived
14//       from this software without specific prior written permission.
15//
16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28#include <stdlib.h>
29
30#include "src/v8.h"
31
32#include "src/base/platform/platform.h"
33#include "test/cctest/cctest.h"
34
35using namespace v8::internal;
36
37
38TEST(Hex) {
39  UnicodeCache uc;
40  CHECK_EQ(0.0, StringToDouble(&uc, "0x0", ALLOW_HEX | ALLOW_IMPLICIT_OCTAL));
41  CHECK_EQ(0.0, StringToDouble(&uc, "0X0", ALLOW_HEX | ALLOW_IMPLICIT_OCTAL));
42  CHECK_EQ(1.0, StringToDouble(&uc, "0x1", ALLOW_HEX | ALLOW_IMPLICIT_OCTAL));
43  CHECK_EQ(16.0, StringToDouble(&uc, "0x10", ALLOW_HEX | ALLOW_IMPLICIT_OCTAL));
44  CHECK_EQ(255.0, StringToDouble(&uc, "0xff",
45                                 ALLOW_HEX | ALLOW_IMPLICIT_OCTAL));
46  CHECK_EQ(175.0, StringToDouble(&uc, "0xAF",
47                                 ALLOW_HEX | ALLOW_IMPLICIT_OCTAL));
48
49  CHECK_EQ(0.0, StringToDouble(&uc, "0x0", ALLOW_HEX));
50  CHECK_EQ(0.0, StringToDouble(&uc, "0X0", ALLOW_HEX));
51  CHECK_EQ(1.0, StringToDouble(&uc, "0x1", ALLOW_HEX));
52  CHECK_EQ(16.0, StringToDouble(&uc, "0x10", ALLOW_HEX));
53  CHECK_EQ(255.0, StringToDouble(&uc, "0xff", ALLOW_HEX));
54  CHECK_EQ(175.0, StringToDouble(&uc, "0xAF", ALLOW_HEX));
55}
56
57
58TEST(Octal) {
59  UnicodeCache uc;
60  CHECK_EQ(0.0, StringToDouble(&uc, "0o0", ALLOW_OCTAL | ALLOW_IMPLICIT_OCTAL));
61  CHECK_EQ(0.0, StringToDouble(&uc, "0O0", ALLOW_OCTAL | ALLOW_IMPLICIT_OCTAL));
62  CHECK_EQ(1.0, StringToDouble(&uc, "0o1", ALLOW_OCTAL | ALLOW_IMPLICIT_OCTAL));
63  CHECK_EQ(7.0, StringToDouble(&uc, "0o7", ALLOW_OCTAL | ALLOW_IMPLICIT_OCTAL));
64  CHECK_EQ(8.0, StringToDouble(&uc, "0o10",
65                               ALLOW_OCTAL | ALLOW_IMPLICIT_OCTAL));
66  CHECK_EQ(63.0, StringToDouble(&uc, "0o77",
67                                ALLOW_OCTAL | ALLOW_IMPLICIT_OCTAL));
68
69  CHECK_EQ(0.0, StringToDouble(&uc, "0o0", ALLOW_OCTAL));
70  CHECK_EQ(0.0, StringToDouble(&uc, "0O0", ALLOW_OCTAL));
71  CHECK_EQ(1.0, StringToDouble(&uc, "0o1", ALLOW_OCTAL));
72  CHECK_EQ(7.0, StringToDouble(&uc, "0o7", ALLOW_OCTAL));
73  CHECK_EQ(8.0, StringToDouble(&uc, "0o10", ALLOW_OCTAL));
74  CHECK_EQ(63.0, StringToDouble(&uc, "0o77", ALLOW_OCTAL));
75}
76
77
78TEST(ImplicitOctal) {
79  UnicodeCache uc;
80  CHECK_EQ(0.0, StringToDouble(&uc, "0", ALLOW_HEX | ALLOW_IMPLICIT_OCTAL));
81  CHECK_EQ(0.0, StringToDouble(&uc, "00", ALLOW_HEX | ALLOW_IMPLICIT_OCTAL));
82  CHECK_EQ(1.0, StringToDouble(&uc, "01", ALLOW_HEX | ALLOW_IMPLICIT_OCTAL));
83  CHECK_EQ(7.0, StringToDouble(&uc, "07", ALLOW_HEX | ALLOW_IMPLICIT_OCTAL));
84  CHECK_EQ(8.0, StringToDouble(&uc, "010", ALLOW_HEX | ALLOW_IMPLICIT_OCTAL));
85  CHECK_EQ(63.0, StringToDouble(&uc, "077", ALLOW_HEX | ALLOW_IMPLICIT_OCTAL));
86
87  CHECK_EQ(0.0, StringToDouble(&uc, "0", ALLOW_HEX));
88  CHECK_EQ(0.0, StringToDouble(&uc, "00", ALLOW_HEX));
89  CHECK_EQ(1.0, StringToDouble(&uc, "01", ALLOW_HEX));
90  CHECK_EQ(7.0, StringToDouble(&uc, "07", ALLOW_HEX));
91  CHECK_EQ(10.0, StringToDouble(&uc, "010", ALLOW_HEX));
92  CHECK_EQ(77.0, StringToDouble(&uc, "077", ALLOW_HEX));
93
94  const double x = 010000000000;  // Power of 2, no rounding errors.
95  CHECK_EQ(x * x * x * x * x, StringToDouble(&uc, "01" "0000000000" "0000000000"
96      "0000000000" "0000000000" "0000000000", ALLOW_IMPLICIT_OCTAL));
97}
98
99
100TEST(Binary) {
101  UnicodeCache uc;
102  CHECK_EQ(0.0, StringToDouble(&uc, "0b0",
103                               ALLOW_BINARY | ALLOW_IMPLICIT_OCTAL));
104  CHECK_EQ(0.0, StringToDouble(&uc, "0B0",
105                               ALLOW_BINARY | ALLOW_IMPLICIT_OCTAL));
106  CHECK_EQ(1.0, StringToDouble(&uc, "0b1",
107                               ALLOW_BINARY | ALLOW_IMPLICIT_OCTAL));
108  CHECK_EQ(2.0, StringToDouble(&uc, "0b10",
109                               ALLOW_BINARY | ALLOW_IMPLICIT_OCTAL));
110  CHECK_EQ(3.0, StringToDouble(&uc, "0b11",
111                               ALLOW_BINARY | ALLOW_IMPLICIT_OCTAL));
112
113  CHECK_EQ(0.0, StringToDouble(&uc, "0b0", ALLOW_BINARY));
114  CHECK_EQ(0.0, StringToDouble(&uc, "0B0", ALLOW_BINARY));
115  CHECK_EQ(1.0, StringToDouble(&uc, "0b1", ALLOW_BINARY));
116  CHECK_EQ(2.0, StringToDouble(&uc, "0b10", ALLOW_BINARY));
117  CHECK_EQ(3.0, StringToDouble(&uc, "0b11", ALLOW_BINARY));
118}
119
120
121TEST(MalformedOctal) {
122  UnicodeCache uc;
123  CHECK_EQ(8.0, StringToDouble(&uc, "08", ALLOW_HEX | ALLOW_IMPLICIT_OCTAL));
124  CHECK_EQ(81.0, StringToDouble(&uc, "081", ALLOW_HEX | ALLOW_IMPLICIT_OCTAL));
125  CHECK_EQ(78.0, StringToDouble(&uc, "078", ALLOW_HEX | ALLOW_IMPLICIT_OCTAL));
126
127  CHECK(std::isnan(StringToDouble(&uc, "07.7",
128                                  ALLOW_HEX | ALLOW_IMPLICIT_OCTAL)));
129  CHECK(std::isnan(StringToDouble(&uc, "07.8",
130                                  ALLOW_HEX | ALLOW_IMPLICIT_OCTAL)));
131  CHECK(std::isnan(StringToDouble(&uc, "07e8",
132                                  ALLOW_HEX | ALLOW_IMPLICIT_OCTAL)));
133  CHECK(std::isnan(StringToDouble(&uc, "07e7",
134                                  ALLOW_HEX | ALLOW_IMPLICIT_OCTAL)));
135
136  CHECK_EQ(8.7, StringToDouble(&uc, "08.7", ALLOW_HEX | ALLOW_IMPLICIT_OCTAL));
137  CHECK_EQ(8e7, StringToDouble(&uc, "08e7", ALLOW_HEX | ALLOW_IMPLICIT_OCTAL));
138
139  CHECK_EQ(0.001, StringToDouble(&uc, "0.001",
140                                 ALLOW_HEX | ALLOW_IMPLICIT_OCTAL));
141  CHECK_EQ(0.713, StringToDouble(&uc, "0.713",
142                                 ALLOW_HEX | ALLOW_IMPLICIT_OCTAL));
143
144  CHECK_EQ(8.0, StringToDouble(&uc, "08", ALLOW_HEX));
145  CHECK_EQ(81.0, StringToDouble(&uc, "081", ALLOW_HEX));
146  CHECK_EQ(78.0, StringToDouble(&uc, "078", ALLOW_HEX));
147
148  CHECK_EQ(7.7, StringToDouble(&uc, "07.7", ALLOW_HEX));
149  CHECK_EQ(7.8, StringToDouble(&uc, "07.8", ALLOW_HEX));
150  CHECK_EQ(7e8, StringToDouble(&uc, "07e8", ALLOW_HEX));
151  CHECK_EQ(7e7, StringToDouble(&uc, "07e7", ALLOW_HEX));
152
153  CHECK_EQ(8.7, StringToDouble(&uc, "08.7", ALLOW_HEX));
154  CHECK_EQ(8e7, StringToDouble(&uc, "08e7", ALLOW_HEX));
155
156  CHECK_EQ(0.001, StringToDouble(&uc, "0.001", ALLOW_HEX));
157  CHECK_EQ(0.713, StringToDouble(&uc, "0.713", ALLOW_HEX));
158}
159
160
161TEST(TrailingJunk) {
162  UnicodeCache uc;
163  CHECK_EQ(8.0, StringToDouble(&uc, "8q", ALLOW_TRAILING_JUNK));
164  CHECK_EQ(63.0, StringToDouble(&uc, "077qqq",
165                                ALLOW_IMPLICIT_OCTAL | ALLOW_TRAILING_JUNK));
166  CHECK_EQ(10.0, StringToDouble(&uc, "10e",
167                                ALLOW_IMPLICIT_OCTAL | ALLOW_TRAILING_JUNK));
168  CHECK_EQ(10.0, StringToDouble(&uc, "10e-",
169                                ALLOW_IMPLICIT_OCTAL | ALLOW_TRAILING_JUNK));
170}
171
172
173TEST(NonStrDecimalLiteral) {
174  UnicodeCache uc;
175  CHECK(std::isnan(
176      StringToDouble(&uc, " ", NO_FLAGS, v8::base::OS::nan_value())));
177  CHECK(
178      std::isnan(StringToDouble(&uc, "", NO_FLAGS, v8::base::OS::nan_value())));
179  CHECK(std::isnan(
180      StringToDouble(&uc, " ", NO_FLAGS, v8::base::OS::nan_value())));
181  CHECK_EQ(0.0, StringToDouble(&uc, "", NO_FLAGS));
182  CHECK_EQ(0.0, StringToDouble(&uc, " ", NO_FLAGS));
183}
184
185
186TEST(IntegerStrLiteral) {
187  UnicodeCache uc;
188  CHECK_EQ(0.0, StringToDouble(&uc, "0.0", NO_FLAGS));
189  CHECK_EQ(0.0, StringToDouble(&uc, "0", NO_FLAGS));
190  CHECK_EQ(0.0, StringToDouble(&uc, "00", NO_FLAGS));
191  CHECK_EQ(0.0, StringToDouble(&uc, "000", NO_FLAGS));
192  CHECK_EQ(1.0, StringToDouble(&uc, "1", NO_FLAGS));
193  CHECK_EQ(-1.0, StringToDouble(&uc, "-1", NO_FLAGS));
194  CHECK_EQ(-1.0, StringToDouble(&uc, "  -1  ", NO_FLAGS));
195  CHECK_EQ(1.0, StringToDouble(&uc, "  +1  ", NO_FLAGS));
196  CHECK(std::isnan(StringToDouble(&uc, "  -  1  ", NO_FLAGS)));
197  CHECK(std::isnan(StringToDouble(&uc, "  +  1  ", NO_FLAGS)));
198
199  CHECK_EQ(0.0, StringToDouble(&uc, "0e0", ALLOW_HEX | ALLOW_IMPLICIT_OCTAL));
200  CHECK_EQ(0.0, StringToDouble(&uc, "0e1", ALLOW_HEX | ALLOW_IMPLICIT_OCTAL));
201  CHECK_EQ(0.0, StringToDouble(&uc, "0e-1", ALLOW_HEX | ALLOW_IMPLICIT_OCTAL));
202  CHECK_EQ(0.0, StringToDouble(&uc, "0e-100000",
203                               ALLOW_HEX | ALLOW_IMPLICIT_OCTAL));
204  CHECK_EQ(0.0, StringToDouble(&uc, "0e+100000",
205                               ALLOW_HEX | ALLOW_IMPLICIT_OCTAL));
206  CHECK_EQ(0.0, StringToDouble(&uc, "0.", ALLOW_HEX | ALLOW_IMPLICIT_OCTAL));
207}
208
209
210TEST(LongNumberStr) {
211  UnicodeCache uc;
212  CHECK_EQ(1e10, StringToDouble(&uc, "1" "0000000000", NO_FLAGS));
213  CHECK_EQ(1e20, StringToDouble(&uc, "1" "0000000000" "0000000000", NO_FLAGS));
214
215  CHECK_EQ(1e60, StringToDouble(&uc, "1" "0000000000" "0000000000" "0000000000"
216      "0000000000" "0000000000" "0000000000", NO_FLAGS));
217
218  CHECK_EQ(1e-2, StringToDouble(&uc, "." "0" "1", NO_FLAGS));
219  CHECK_EQ(1e-11, StringToDouble(&uc, "." "0000000000" "1", NO_FLAGS));
220  CHECK_EQ(1e-21, StringToDouble(&uc, "." "0000000000" "0000000000" "1",
221                                 NO_FLAGS));
222
223  CHECK_EQ(1e-61, StringToDouble(&uc, "." "0000000000" "0000000000" "0000000000"
224      "0000000000" "0000000000" "0000000000" "1", NO_FLAGS));
225
226
227  // x = 24414062505131248.0 and y = 24414062505131252.0 are representable in
228  // double. Check chat z = (x + y) / 2 is rounded to x...
229  CHECK_EQ(24414062505131248.0,
230           StringToDouble(&uc, "24414062505131250.0", NO_FLAGS));
231
232  // ... and z = (x + y) / 2 + delta is rounded to y.
233  CHECK_EQ(24414062505131252.0,
234           StringToDouble(&uc, "24414062505131250.000000001", NO_FLAGS));
235}
236
237
238TEST(MaximumSignificantDigits) {
239  UnicodeCache uc;
240  char num[] =
241      "4.4501477170144020250819966727949918635852426585926051135169509"
242      "122872622312493126406953054127118942431783801370080830523154578"
243      "251545303238277269592368457430440993619708911874715081505094180"
244      "604803751173783204118519353387964161152051487413083163272520124"
245      "606023105869053620631175265621765214646643181420505164043632222"
246      "668006474326056011713528291579642227455489682133472873831754840"
247      "341397809846934151055619529382191981473003234105366170879223151"
248      "087335413188049110555339027884856781219017754500629806224571029"
249      "581637117459456877330110324211689177656713705497387108207822477"
250      "584250967061891687062782163335299376138075114200886249979505279"
251      "101870966346394401564490729731565935244123171539810221213221201"
252      "847003580761626016356864581135848683152156368691976240370422601"
253      "6998291015625000000000000000000000000000000000e-308";
254
255  CHECK_EQ(4.4501477170144017780491e-308, StringToDouble(&uc, num, NO_FLAGS));
256
257  // Changes the result of strtod (at least in glibc implementation).
258  num[sizeof(num) - 8] = '1';
259
260  CHECK_EQ(4.4501477170144022721148e-308, StringToDouble(&uc, num, NO_FLAGS));
261}
262
263
264TEST(MinimumExponent) {
265  UnicodeCache uc;
266  // Same test but with different point-position.
267  char num[] =
268  "445014771701440202508199667279499186358524265859260511351695091"
269  "228726223124931264069530541271189424317838013700808305231545782"
270  "515453032382772695923684574304409936197089118747150815050941806"
271  "048037511737832041185193533879641611520514874130831632725201246"
272  "060231058690536206311752656217652146466431814205051640436322226"
273  "680064743260560117135282915796422274554896821334728738317548403"
274  "413978098469341510556195293821919814730032341053661708792231510"
275  "873354131880491105553390278848567812190177545006298062245710295"
276  "816371174594568773301103242116891776567137054973871082078224775"
277  "842509670618916870627821633352993761380751142008862499795052791"
278  "018709663463944015644907297315659352441231715398102212132212018"
279  "470035807616260163568645811358486831521563686919762403704226016"
280  "998291015625000000000000000000000000000000000e-1108";
281
282  CHECK_EQ(4.4501477170144017780491e-308, StringToDouble(&uc, num, NO_FLAGS));
283
284  // Changes the result of strtod (at least in glibc implementation).
285  num[sizeof(num) - 8] = '1';
286
287  CHECK_EQ(4.4501477170144022721148e-308, StringToDouble(&uc, num, NO_FLAGS));
288}
289
290
291TEST(MaximumExponent) {
292  UnicodeCache uc;
293  char num[] = "0.16e309";
294
295  CHECK_EQ(1.59999999999999997765e+308, StringToDouble(&uc, num, NO_FLAGS));
296}
297
298
299TEST(ExponentNumberStr) {
300  UnicodeCache uc;
301  CHECK_EQ(1e1, StringToDouble(&uc, "1e1", NO_FLAGS));
302  CHECK_EQ(1e1, StringToDouble(&uc, "1e+1", NO_FLAGS));
303  CHECK_EQ(1e-1, StringToDouble(&uc, "1e-1", NO_FLAGS));
304  CHECK_EQ(1e100, StringToDouble(&uc, "1e+100", NO_FLAGS));
305  CHECK_EQ(1e-100, StringToDouble(&uc, "1e-100", NO_FLAGS));
306  CHECK_EQ(1e-106, StringToDouble(&uc, ".000001e-100", NO_FLAGS));
307}
308
309
310class OneBit1: public BitField<uint32_t, 0, 1> {};
311class OneBit2: public BitField<uint32_t, 7, 1> {};
312class EightBit1: public BitField<uint32_t, 0, 8> {};
313class EightBit2: public BitField<uint32_t, 13, 8> {};
314
315TEST(BitField) {
316  uint32_t x;
317
318  // One bit bit field can hold values 0 and 1.
319  CHECK(!OneBit1::is_valid(static_cast<uint32_t>(-1)));
320  CHECK(!OneBit2::is_valid(static_cast<uint32_t>(-1)));
321  for (int i = 0; i < 2; i++) {
322    CHECK(OneBit1::is_valid(i));
323    x = OneBit1::encode(i);
324    CHECK_EQ(i, OneBit1::decode(x));
325
326    CHECK(OneBit2::is_valid(i));
327    x = OneBit2::encode(i);
328    CHECK_EQ(i, OneBit2::decode(x));
329  }
330  CHECK(!OneBit1::is_valid(2));
331  CHECK(!OneBit2::is_valid(2));
332
333  // Eight bit bit field can hold values from 0 tp 255.
334  CHECK(!EightBit1::is_valid(static_cast<uint32_t>(-1)));
335  CHECK(!EightBit2::is_valid(static_cast<uint32_t>(-1)));
336  for (int i = 0; i < 256; i++) {
337    CHECK(EightBit1::is_valid(i));
338    x = EightBit1::encode(i);
339    CHECK_EQ(i, EightBit1::decode(x));
340    CHECK(EightBit2::is_valid(i));
341    x = EightBit2::encode(i);
342    CHECK_EQ(i, EightBit2::decode(x));
343  }
344  CHECK(!EightBit1::is_valid(256));
345  CHECK(!EightBit2::is_valid(256));
346}
347
348
349class UpperBits: public BitField64<int, 61, 3> {};
350class MiddleBits: public BitField64<int, 31, 2> {};
351
352TEST(BitField64) {
353  uint64_t x;
354
355  // Test most significant bits.
356  x = V8_2PART_UINT64_C(0xE0000000, 00000000);
357  CHECK(x == UpperBits::encode(7));
358  CHECK_EQ(7, UpperBits::decode(x));
359
360  // Test the 32/64-bit boundary bits.
361  x = V8_2PART_UINT64_C(0x00000001, 80000000);
362  CHECK(x == MiddleBits::encode(3));
363  CHECK_EQ(3, MiddleBits::decode(x));
364}
365