JezK
Edit File: test-conversions.cc
// Copyright 2011 the V8 project authors. All rights reserved. #include <stdlib.h> #include "v8.h" #include "platform.h" #include "cctest.h" using namespace v8::internal; TEST(Hex) { UnicodeCache uc; CHECK_EQ(0.0, StringToDouble(&uc, "0x0", ALLOW_HEX | ALLOW_OCTALS)); CHECK_EQ(0.0, StringToDouble(&uc, "0X0", ALLOW_HEX | ALLOW_OCTALS)); CHECK_EQ(1.0, StringToDouble(&uc, "0x1", ALLOW_HEX | ALLOW_OCTALS)); CHECK_EQ(16.0, StringToDouble(&uc, "0x10", ALLOW_HEX | ALLOW_OCTALS)); CHECK_EQ(255.0, StringToDouble(&uc, "0xff", ALLOW_HEX | ALLOW_OCTALS)); CHECK_EQ(175.0, StringToDouble(&uc, "0xAF", ALLOW_HEX | ALLOW_OCTALS)); CHECK_EQ(0.0, StringToDouble(&uc, "0x0", ALLOW_HEX)); CHECK_EQ(0.0, StringToDouble(&uc, "0X0", ALLOW_HEX)); CHECK_EQ(1.0, StringToDouble(&uc, "0x1", ALLOW_HEX)); CHECK_EQ(16.0, StringToDouble(&uc, "0x10", ALLOW_HEX)); CHECK_EQ(255.0, StringToDouble(&uc, "0xff", ALLOW_HEX)); CHECK_EQ(175.0, StringToDouble(&uc, "0xAF", ALLOW_HEX)); } TEST(Octal) { UnicodeCache uc; CHECK_EQ(0.0, StringToDouble(&uc, "0", ALLOW_HEX | ALLOW_OCTALS)); CHECK_EQ(0.0, StringToDouble(&uc, "00", ALLOW_HEX | ALLOW_OCTALS)); CHECK_EQ(1.0, StringToDouble(&uc, "01", ALLOW_HEX | ALLOW_OCTALS)); CHECK_EQ(7.0, StringToDouble(&uc, "07", ALLOW_HEX | ALLOW_OCTALS)); CHECK_EQ(8.0, StringToDouble(&uc, "010", ALLOW_HEX | ALLOW_OCTALS)); CHECK_EQ(63.0, StringToDouble(&uc, "077", ALLOW_HEX | ALLOW_OCTALS)); CHECK_EQ(0.0, StringToDouble(&uc, "0", ALLOW_HEX)); CHECK_EQ(0.0, StringToDouble(&uc, "00", ALLOW_HEX)); CHECK_EQ(1.0, StringToDouble(&uc, "01", ALLOW_HEX)); CHECK_EQ(7.0, StringToDouble(&uc, "07", ALLOW_HEX)); CHECK_EQ(10.0, StringToDouble(&uc, "010", ALLOW_HEX)); CHECK_EQ(77.0, StringToDouble(&uc, "077", ALLOW_HEX)); const double x = 010000000000; // Power of 2, no rounding errors. CHECK_EQ(x * x * x * x * x, StringToDouble(&uc, "01" "0000000000" "0000000000" "0000000000" "0000000000" "0000000000", ALLOW_OCTALS)); } TEST(MalformedOctal) { UnicodeCache uc; CHECK_EQ(8.0, StringToDouble(&uc, "08", ALLOW_HEX | ALLOW_OCTALS)); CHECK_EQ(81.0, StringToDouble(&uc, "081", ALLOW_HEX | ALLOW_OCTALS)); CHECK_EQ(78.0, StringToDouble(&uc, "078", ALLOW_HEX | ALLOW_OCTALS)); CHECK(isnan(StringToDouble(&uc, "07.7", ALLOW_HEX | ALLOW_OCTALS))); CHECK(isnan(StringToDouble(&uc, "07.8", ALLOW_HEX | ALLOW_OCTALS))); CHECK(isnan(StringToDouble(&uc, "07e8", ALLOW_HEX | ALLOW_OCTALS))); CHECK(isnan(StringToDouble(&uc, "07e7", ALLOW_HEX | ALLOW_OCTALS))); CHECK_EQ(8.7, StringToDouble(&uc, "08.7", ALLOW_HEX | ALLOW_OCTALS)); CHECK_EQ(8e7, StringToDouble(&uc, "08e7", ALLOW_HEX | ALLOW_OCTALS)); CHECK_EQ(0.001, StringToDouble(&uc, "0.001", ALLOW_HEX | ALLOW_OCTALS)); CHECK_EQ(0.713, StringToDouble(&uc, "0.713", ALLOW_HEX | ALLOW_OCTALS)); CHECK_EQ(8.0, StringToDouble(&uc, "08", ALLOW_HEX)); CHECK_EQ(81.0, StringToDouble(&uc, "081", ALLOW_HEX)); CHECK_EQ(78.0, StringToDouble(&uc, "078", ALLOW_HEX)); CHECK_EQ(7.7, StringToDouble(&uc, "07.7", ALLOW_HEX)); CHECK_EQ(7.8, StringToDouble(&uc, "07.8", ALLOW_HEX)); CHECK_EQ(7e8, StringToDouble(&uc, "07e8", ALLOW_HEX)); CHECK_EQ(7e7, StringToDouble(&uc, "07e7", ALLOW_HEX)); CHECK_EQ(8.7, StringToDouble(&uc, "08.7", ALLOW_HEX)); CHECK_EQ(8e7, StringToDouble(&uc, "08e7", ALLOW_HEX)); CHECK_EQ(0.001, StringToDouble(&uc, "0.001", ALLOW_HEX)); CHECK_EQ(0.713, StringToDouble(&uc, "0.713", ALLOW_HEX)); } TEST(TrailingJunk) { UnicodeCache uc; CHECK_EQ(8.0, StringToDouble(&uc, "8q", ALLOW_TRAILING_JUNK)); CHECK_EQ(63.0, StringToDouble(&uc, "077qqq", ALLOW_OCTALS | ALLOW_TRAILING_JUNK)); CHECK_EQ(10.0, StringToDouble(&uc, "10e", ALLOW_OCTALS | ALLOW_TRAILING_JUNK)); CHECK_EQ(10.0, StringToDouble(&uc, "10e-", ALLOW_OCTALS | ALLOW_TRAILING_JUNK)); } TEST(NonStrDecimalLiteral) { UnicodeCache uc; CHECK(isnan(StringToDouble(&uc, " ", NO_FLAGS, OS::nan_value()))); CHECK(isnan(StringToDouble(&uc, "", NO_FLAGS, OS::nan_value()))); CHECK(isnan(StringToDouble(&uc, " ", NO_FLAGS, OS::nan_value()))); CHECK_EQ(0.0, StringToDouble(&uc, "", NO_FLAGS)); CHECK_EQ(0.0, StringToDouble(&uc, " ", NO_FLAGS)); } TEST(IntegerStrLiteral) { UnicodeCache uc; CHECK_EQ(0.0, StringToDouble(&uc, "0.0", NO_FLAGS)); CHECK_EQ(0.0, StringToDouble(&uc, "0", NO_FLAGS)); CHECK_EQ(0.0, StringToDouble(&uc, "00", NO_FLAGS)); CHECK_EQ(0.0, StringToDouble(&uc, "000", NO_FLAGS)); CHECK_EQ(1.0, StringToDouble(&uc, "1", NO_FLAGS)); CHECK_EQ(-1.0, StringToDouble(&uc, "-1", NO_FLAGS)); CHECK_EQ(-1.0, StringToDouble(&uc, " -1 ", NO_FLAGS)); CHECK_EQ(1.0, StringToDouble(&uc, " +1 ", NO_FLAGS)); CHECK(isnan(StringToDouble(&uc, " - 1 ", NO_FLAGS))); CHECK(isnan(StringToDouble(&uc, " + 1 ", NO_FLAGS))); CHECK_EQ(0.0, StringToDouble(&uc, "0e0", ALLOW_HEX | ALLOW_OCTALS)); CHECK_EQ(0.0, StringToDouble(&uc, "0e1", ALLOW_HEX | ALLOW_OCTALS)); CHECK_EQ(0.0, StringToDouble(&uc, "0e-1", ALLOW_HEX | ALLOW_OCTALS)); CHECK_EQ(0.0, StringToDouble(&uc, "0e-100000", ALLOW_HEX | ALLOW_OCTALS)); CHECK_EQ(0.0, StringToDouble(&uc, "0e+100000", ALLOW_HEX | ALLOW_OCTALS)); CHECK_EQ(0.0, StringToDouble(&uc, "0.", ALLOW_HEX | ALLOW_OCTALS)); } TEST(LongNumberStr) { UnicodeCache uc; CHECK_EQ(1e10, StringToDouble(&uc, "1" "0000000000", NO_FLAGS)); CHECK_EQ(1e20, StringToDouble(&uc, "1" "0000000000" "0000000000", NO_FLAGS)); CHECK_EQ(1e60, StringToDouble(&uc, "1" "0000000000" "0000000000" "0000000000" "0000000000" "0000000000" "0000000000", NO_FLAGS)); CHECK_EQ(1e-2, StringToDouble(&uc, "." "0" "1", NO_FLAGS)); CHECK_EQ(1e-11, StringToDouble(&uc, "." "0000000000" "1", NO_FLAGS)); CHECK_EQ(1e-21, StringToDouble(&uc, "." "0000000000" "0000000000" "1", NO_FLAGS)); CHECK_EQ(1e-61, StringToDouble(&uc, "." "0000000000" "0000000000" "0000000000" "0000000000" "0000000000" "0000000000" "1", NO_FLAGS)); // x = 24414062505131248.0 and y = 24414062505131252.0 are representable in // double. Check chat z = (x + y) / 2 is rounded to x... CHECK_EQ(24414062505131248.0, StringToDouble(&uc, "24414062505131250.0", NO_FLAGS)); // ... and z = (x + y) / 2 + delta is rounded to y. CHECK_EQ(24414062505131252.0, StringToDouble(&uc, "24414062505131250.000000001", NO_FLAGS)); } TEST(MaximumSignificantDigits) { UnicodeCache uc; char num[] = "4.4501477170144020250819966727949918635852426585926051135169509" "122872622312493126406953054127118942431783801370080830523154578" "251545303238277269592368457430440993619708911874715081505094180" "604803751173783204118519353387964161152051487413083163272520124" "606023105869053620631175265621765214646643181420505164043632222" "668006474326056011713528291579642227455489682133472873831754840" "341397809846934151055619529382191981473003234105366170879223151" "087335413188049110555339027884856781219017754500629806224571029" "581637117459456877330110324211689177656713705497387108207822477" "584250967061891687062782163335299376138075114200886249979505279" "101870966346394401564490729731565935244123171539810221213221201" "847003580761626016356864581135848683152156368691976240370422601" "6998291015625000000000000000000000000000000000e-308"; CHECK_EQ(4.4501477170144017780491e-308, StringToDouble(&uc, num, NO_FLAGS)); // Changes the result of strtod (at least in glibc implementation). num[sizeof(num) - 8] = '1'; CHECK_EQ(4.4501477170144022721148e-308, StringToDouble(&uc, num, NO_FLAGS)); } TEST(MinimumExponent) { UnicodeCache uc; // Same test but with different point-position. char num[] = "445014771701440202508199667279499186358524265859260511351695091" "228726223124931264069530541271189424317838013700808305231545782" "515453032382772695923684574304409936197089118747150815050941806" "048037511737832041185193533879641611520514874130831632725201246" "060231058690536206311752656217652146466431814205051640436322226" "680064743260560117135282915796422274554896821334728738317548403" "413978098469341510556195293821919814730032341053661708792231510" "873354131880491105553390278848567812190177545006298062245710295" "816371174594568773301103242116891776567137054973871082078224775" "842509670618916870627821633352993761380751142008862499795052791" "018709663463944015644907297315659352441231715398102212132212018" "470035807616260163568645811358486831521563686919762403704226016" "998291015625000000000000000000000000000000000e-1108"; CHECK_EQ(4.4501477170144017780491e-308, StringToDouble(&uc, num, NO_FLAGS)); // Changes the result of strtod (at least in glibc implementation). num[sizeof(num) - 8] = '1'; CHECK_EQ(4.4501477170144022721148e-308, StringToDouble(&uc, num, NO_FLAGS)); } TEST(MaximumExponent) { UnicodeCache uc; char num[] = "0.16e309"; CHECK_EQ(1.59999999999999997765e+308, StringToDouble(&uc, num, NO_FLAGS)); } TEST(ExponentNumberStr) { UnicodeCache uc; CHECK_EQ(1e1, StringToDouble(&uc, "1e1", NO_FLAGS)); CHECK_EQ(1e1, StringToDouble(&uc, "1e+1", NO_FLAGS)); CHECK_EQ(1e-1, StringToDouble(&uc, "1e-1", NO_FLAGS)); CHECK_EQ(1e100, StringToDouble(&uc, "1e+100", NO_FLAGS)); CHECK_EQ(1e-100, StringToDouble(&uc, "1e-100", NO_FLAGS)); CHECK_EQ(1e-106, StringToDouble(&uc, ".000001e-100", NO_FLAGS)); } class OneBit1: public BitField<uint32_t, 0, 1> {}; class OneBit2: public BitField<uint32_t, 7, 1> {}; class EightBit1: public BitField<uint32_t, 0, 8> {}; class EightBit2: public BitField<uint32_t, 13, 8> {}; TEST(BitField) { uint32_t x; // One bit bit field can hold values 0 and 1. CHECK(!OneBit1::is_valid(static_cast<uint32_t>(-1))); CHECK(!OneBit2::is_valid(static_cast<uint32_t>(-1))); for (int i = 0; i < 2; i++) { CHECK(OneBit1::is_valid(i)); x = OneBit1::encode(i); CHECK_EQ(i, OneBit1::decode(x)); CHECK(OneBit2::is_valid(i)); x = OneBit2::encode(i); CHECK_EQ(i, OneBit2::decode(x)); } CHECK(!OneBit1::is_valid(2)); CHECK(!OneBit2::is_valid(2)); // Eight bit bit field can hold values from 0 tp 255. CHECK(!EightBit1::is_valid(static_cast<uint32_t>(-1))); CHECK(!EightBit2::is_valid(static_cast<uint32_t>(-1))); for (int i = 0; i < 256; i++) { CHECK(EightBit1::is_valid(i)); x = EightBit1::encode(i); CHECK_EQ(i, EightBit1::decode(x)); CHECK(EightBit2::is_valid(i)); x = EightBit2::encode(i); CHECK_EQ(i, EightBit2::decode(x)); } CHECK(!EightBit1::is_valid(256)); CHECK(!EightBit2::is_valid(256)); }