forked from OSchip/llvm-project
266 lines
10 KiB
C++
266 lines
10 KiB
C++
#include "flang/Evaluate/integer.h"
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#include "testing.h"
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#include <cstdio>
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#include <string>
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using Fortran::evaluate::Ordering;
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using Fortran::evaluate::value::Integer;
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template <int BITS, typename INT = Integer<BITS>> void exhaustiveTesting() {
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std::uint64_t maxUnsignedValue{(std::uint64_t{1} << BITS) - 1};
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std::int64_t maxPositiveSignedValue{(std::int64_t{1} << (BITS - 1)) - 1};
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std::int64_t mostNegativeSignedValue{-(std::int64_t{1} << (BITS - 1))};
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char desc[64];
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std::snprintf(desc, sizeof desc,
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"BITS=%d, PARTBITS=%d, sizeof(Part)=%d, LE=%d", BITS, INT::partBits,
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static_cast<int>(sizeof(typename INT::Part)), INT::littleEndian);
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MATCH(BITS, INT::bits)(desc);
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MATCH(maxPositiveSignedValue, INT::HUGE().ToUInt64())(desc);
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INT zero;
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TEST(zero.IsZero())(desc);
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MATCH(0, zero.ToUInt64())(desc);
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MATCH(0, zero.ToInt64())(desc);
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for (std::uint64_t x{0}; x <= maxUnsignedValue; ++x) {
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unsigned long long ullx = x;
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INT a{x};
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MATCH(x, a.ToUInt64())(desc);
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INT copy{a};
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MATCH(x, copy.ToUInt64())(desc);
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copy = a;
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MATCH(x, copy.ToUInt64())(desc);
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MATCH(x == 0, a.IsZero())("%s, x=0x%llx", desc, x);
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char buffer[64];
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std::snprintf(buffer, sizeof buffer, " %llu", ullx);
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const char *p{buffer};
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auto readcheck{INT::Read(p)};
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TEST(!readcheck.overflow)("%s, x=0x%llx", desc, x);
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MATCH(x, readcheck.value.ToUInt64())("%s, x=0x%llx", desc, x);
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TEST(!*p)("%s, x=0x%llx", desc, x);
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std::snprintf(buffer, sizeof buffer, "%llx", ullx);
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p = buffer;
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readcheck = INT::Read(p, 16);
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TEST(!readcheck.overflow)("%s, x=0x%llx", desc, x);
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MATCH(x, readcheck.value.ToUInt64())("%s, x=0x%llx", desc, x);
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TEST(!*p)("%s, x=0x%llx", desc, x);
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std::string udec{a.UnsignedDecimal()};
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p = udec.data();
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readcheck = INT::Read(p);
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TEST(!readcheck.overflow)("%s, x=0x%llx", desc, x);
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MATCH(x, readcheck.value.ToUInt64())("%s, x=0x%llx", desc, x);
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TEST(!*p)("%s, x=0x%llx", desc, x);
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std::string hex{a.Hexadecimal()};
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p = hex.data();
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readcheck = INT::Read(p, 16);
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TEST(!readcheck.overflow)("%s, x=0x%llx", desc, x);
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MATCH(x, readcheck.value.ToUInt64())("%s, x=0x%llx", desc, x);
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TEST(!*p)("%s, x=0x%llx", desc, x);
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INT t{a.NOT()};
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MATCH(x ^ maxUnsignedValue, t.ToUInt64())("%s, x=0x%llx", desc, x);
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auto negated{a.Negate()};
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MATCH(x == std::uint64_t{1} << (BITS - 1), negated.overflow)
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("%s, x=0x%llx", desc, x);
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MATCH(-x & maxUnsignedValue, negated.value.ToUInt64())
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("%s, x=0x%llx", desc, x);
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auto abs{a.ABS()};
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MATCH(x == std::uint64_t{1} << (BITS - 1), abs.overflow)
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("%s, x=0x%llx", desc, x);
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MATCH(x >> (BITS - 1) ? -x & maxUnsignedValue : x, abs.value.ToUInt64())
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("%s, x=0x%llx", desc, x);
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int lzbc{a.LEADZ()};
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COMPARE(lzbc, >=, 0)("%s, x=0x%llx", desc, x);
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COMPARE(lzbc, <=, BITS)("%s, x=0x%llx", desc, x);
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MATCH(x == 0, lzbc == BITS)("%s, x=0x%llx, lzbc=%d", desc, x, lzbc);
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std::uint64_t lzcheck{std::uint64_t{1} << (BITS - lzbc)};
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COMPARE(x, <, lzcheck)("%s, x=0x%llx, lzbc=%d", desc, x, lzbc);
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COMPARE(x + x + !x, >=, lzcheck)("%s, x=0x%llx, lzbc=%d", desc, x, lzbc);
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int popcheck{0};
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for (int j{0}; j < BITS; ++j) {
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popcheck += (x >> j) & 1;
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}
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MATCH(popcheck, a.POPCNT())("%s, x=0x%llx", desc, x);
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MATCH(popcheck & 1, a.POPPAR())("%s, x=0x%llx", desc, x);
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int trailcheck{0};
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for (; trailcheck < BITS; ++trailcheck) {
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if ((x >> trailcheck) & 1) {
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break;
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}
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}
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MATCH(trailcheck, a.TRAILZ())("%s, x=0x%llx", desc, x);
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for (int j{0}; j < BITS; ++j) {
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MATCH((x >> j) & 1, a.BTEST(j))
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("%s, x=0x%llx, bit %d", desc, x, j);
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}
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// TODO test DIM, MODULO, ISHFTC, DSHIFTL/R
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// TODO test IBCLR, IBSET, IBITS, MAX, MIN, MERGE_BITS, RANGE, SIGN
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Ordering ord{Ordering::Equal};
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std::int64_t sx = x;
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if (x + x > maxUnsignedValue) {
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TEST(a.IsNegative())("%s, x=0x%llx", desc, x);
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sx = x | (~std::uint64_t{0} << BITS);
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TEST(sx < 0)("%s, x=0x%llx %lld", desc, x, sx);
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ord = Ordering::Less;
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} else {
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TEST(!a.IsNegative())("%s, x=0x%llx", desc, x);
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TEST(sx >= 0)("%s, x=0x%llx %lld", desc, x, sx);
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if (sx > 0) {
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ord = Ordering::Greater;
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} else {
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ord = Ordering::Equal;
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}
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}
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TEST(sx == a.ToInt64())("%s, x=0x%llx %lld", desc, x, sx);
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TEST(a.CompareToZeroSigned() == ord)("%s, x=0x%llx %lld", desc, x, sx);
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for (int count{0}; count <= BITS + 1; ++count) {
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t = a.SHIFTL(count);
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MATCH((x << count) & maxUnsignedValue, t.ToUInt64())
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("%s, x=0x%llx, count=%d", desc, x, count);
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t = a.ISHFT(count);
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MATCH((x << count) & maxUnsignedValue, t.ToUInt64())
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("%s, x=0x%llx, count=%d", desc, x, count);
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t = a.SHIFTR(count);
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MATCH(x >> count, t.ToUInt64())
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("%s, x=0x%llx, count=%d", desc, x, count);
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t = a.ISHFT(-count);
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MATCH(x >> count, t.ToUInt64())("%s, x=0x%llx, count=%d", desc, x, count);
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t = a.SHIFTA(count);
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std::uint64_t fill{-(x >> (BITS - 1))};
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std::uint64_t sra{
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count >= BITS ? fill : (x >> count) | (fill << (BITS - count))};
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MATCH(sra, t.ToInt64())
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("%s, x=0x%llx, count=%d", desc, x, count);
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}
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for (std::uint64_t y{0}; y <= maxUnsignedValue; ++y) {
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std::int64_t sy = y;
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if (y + y > maxUnsignedValue) {
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sy = y | (~std::uint64_t{0} << BITS);
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}
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INT b{y};
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if (x < y) {
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ord = Ordering::Less;
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} else if (x > y) {
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ord = Ordering::Greater;
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} else {
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ord = Ordering::Equal;
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}
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TEST(a.CompareUnsigned(b) == ord)("%s, x=0x%llx, y=0x%llx", desc, x, y);
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MATCH(x >= y, a.BGE(b))("%s, x=0x%llx, y=0x%llx", desc, x, y);
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MATCH(x > y, a.BGT(b))("%s, x=0x%llx, y=0x%llx", desc, x, y);
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MATCH(x <= y, a.BLE(b))("%s, x=0x%llx, y=0x%llx", desc, x, y);
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MATCH(x < y, a.BLT(b))("%s, x=0x%llx, y=0x%llx", desc, x, y);
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if (sx < sy) {
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ord = Ordering::Less;
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} else if (sx > sy) {
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ord = Ordering::Greater;
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} else {
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ord = Ordering::Equal;
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}
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TEST(a.CompareSigned(b) == ord)
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("%s, x=0x%llx %lld %d, y=0x%llx %lld %d", desc, x, sx, a.IsNegative(), y,
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sy, b.IsNegative());
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t = a.IAND(b);
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MATCH(x & y, t.ToUInt64())("%s, x=0x%llx, y=0x%llx", desc, x, y);
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t = a.IOR(b);
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MATCH(x | y, t.ToUInt64())("%s, x=0x%llx, y=0x%llx", desc, x, y);
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t = a.IEOR(b);
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MATCH(x ^ y, t.ToUInt64())("%s, x=0x%llx, y=0x%llx", desc, x, y);
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auto sum{a.AddUnsigned(b)};
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COMPARE(
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x + y, ==, sum.value.ToUInt64() + (std::uint64_t{sum.carry} << BITS))
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("%s, x=0x%llx, y=0x%llx, carry=%d", desc, x, y, sum.carry);
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auto ssum{a.AddSigned(b)};
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MATCH((sx + sy) & maxUnsignedValue, ssum.value.ToUInt64())
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("%s, x=0x%llx, y=0x%llx", desc, x, y);
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MATCH(
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sx + sy < mostNegativeSignedValue || sx + sy > maxPositiveSignedValue,
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ssum.overflow)
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("%s, x=0x%llx, y=0x%llx", desc, x, y);
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auto diff{a.SubtractSigned(b)};
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MATCH((sx - sy) & maxUnsignedValue, diff.value.ToUInt64())
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("%s, x=0x%llx, y=0x%llx", desc, x, y);
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MATCH(
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sx - sy < mostNegativeSignedValue || sx - sy > maxPositiveSignedValue,
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diff.overflow)
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("%s, x=0x%llx, y=0x%llx", desc, x, y);
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auto product{a.MultiplyUnsigned(b)};
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MATCH(
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x * y, (product.upper.ToUInt64() << BITS) ^ product.lower.ToUInt64())
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("%s, x=0x%llx, y=0x%llx, lower=0x%llx, upper=0x%llx", desc, x, y,
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product.lower.ToUInt64(), product.upper.ToUInt64());
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product = a.MultiplySigned(b);
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MATCH((sx * sy) & maxUnsignedValue, product.lower.ToUInt64())
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("%s, x=0x%llx, y=0x%llx", desc, x, y);
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MATCH(((sx * sy) >> BITS) & maxUnsignedValue, product.upper.ToUInt64())
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("%s, x=0x%llx, y=0x%llx", desc, x, y);
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auto quot{a.DivideUnsigned(b)};
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MATCH(y == 0, quot.divisionByZero)("%s, x=0x%llx, y=0x%llx", desc, x, y);
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if (y == 0) {
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MATCH(maxUnsignedValue, quot.quotient.ToUInt64())
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("%s, x=0x%llx, y=0x%llx", desc, x, y);
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MATCH(0, quot.remainder.ToUInt64())
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("%s, x=0x%llx, y=0x%llx", desc, x, y);
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} else {
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MATCH(x / y, quot.quotient.ToUInt64())
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("%s, x=0x%llx, y=0x%llx", desc, x, y);
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MATCH(x % y, quot.remainder.ToUInt64())
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("%s, x=0x%llx, y=0x%llx", desc, x, y);
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}
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quot = a.DivideSigned(b);
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bool badCase{sx == mostNegativeSignedValue &&
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((sy == -1 && sx != sy) || (BITS == 1 && sx == sy))};
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MATCH(y == 0, quot.divisionByZero)("%s, x=0x%llx, y=0x%llx", desc, x, y);
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MATCH(badCase, quot.overflow)("%s, x=0x%llx, y=0x%llx", desc, x, y);
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if (y == 0) {
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if (sx >= 0) {
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MATCH(maxPositiveSignedValue, quot.quotient.ToInt64())
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("%s, x=0x%llx, y=0x%llx", desc, x, y);
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} else {
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MATCH(mostNegativeSignedValue, quot.quotient.ToInt64())
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("%s, x=0x%llx, y=0x%llx", desc, x, y);
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}
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MATCH(0, quot.remainder.ToUInt64())
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("%s, x=0x%llx, y=0x%llx", desc, x, y);
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} else if (badCase) {
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MATCH(x, quot.quotient.ToUInt64())
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("%s, x=0x%llx, y=0x%llx", desc, x, y);
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MATCH(0, quot.remainder.ToUInt64())
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("%s, x=0x%llx, y=0x%llx", desc, x, y);
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} else {
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MATCH(sx / sy, quot.quotient.ToInt64())
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("%s, x=0x%llx %lld, y=0x%llx %lld; unsigned 0x%llx", desc, x, sx, y,
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sy, quot.quotient.ToUInt64());
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MATCH(sx - sy * (sx / sy), quot.remainder.ToInt64())
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("%s, x=0x%llx, y=0x%llx", desc, x, y);
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}
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}
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}
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}
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int main() {
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TEST(Reverse(Ordering::Less) == Ordering::Greater);
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TEST(Reverse(Ordering::Greater) == Ordering::Less);
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TEST(Reverse(Ordering::Equal) == Ordering::Equal);
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TEST(Integer<128>{123456789}.UnsignedDecimal() == "123456789");
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TEST(Integer<128>{123456789}.SignedDecimal() == "123456789");
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TEST(Integer<128>{-123456789}.SignedDecimal() == "-123456789");
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std::uint64_t big{0x123456789abcdef};
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TEST(Integer<128>{big}.Hexadecimal() == "123456789abcdef");
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exhaustiveTesting<1>();
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exhaustiveTesting<2>();
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exhaustiveTesting<7>();
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exhaustiveTesting<8>();
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exhaustiveTesting<9>();
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exhaustiveTesting<9, Integer<9, true, 1>>();
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exhaustiveTesting<9, Integer<9, true, 1, std::uint8_t, std::uint16_t>>();
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exhaustiveTesting<9, Integer<9, true, 2>>();
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exhaustiveTesting<9, Integer<9, true, 2, std::uint8_t, std::uint16_t>>();
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exhaustiveTesting<9, Integer<9, true, 8, std::uint8_t, std::uint16_t>>();
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exhaustiveTesting<9, Integer<9, false, 8, std::uint8_t, std::uint16_t>>();
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return testing::Complete();
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}
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