Remove unnecessary files in third_party/bigint

third_party/bigint/testsuite.cc

-/* Test suite for the library.  First, it ``tests'' that all the constructs it
- * uses compile successfully.  Then, its output to stdout is compared to the
- * expected output automatically extracted from slash-slash comments below.
- * 
- * NOTE: For now, the test suite expects a 32-bit system.  On others, some tests
- * may fail, and it may be ineffective at catching bugs.  TODO: Remedy this. */
-
-#include "BigIntegerLibrary.hh"
-
-#include <string>
-#include <iostream>
-using namespace std;
-
-// Evaluate expr and print the result or "error" as appropriate.
-#define TEST(expr) do {\
-        cout << "Line " << __LINE__ << ": ";\
-        try {\
-                cout << (expr);\
-        } catch (const char *err) {\
-                cout << "error";\
-        }\
-        cout << endl;\
-} while (0)
-
-const BigUnsigned &check(const BigUnsigned &x) {
-        unsigned int l = x.getLength();
-        if (l != 0 && x.getBlock(l-1) == 0)
-                cout << "check: Unzapped number!" << endl;
-        if (l > x.getCapacity())
-                cout << "check: Capacity inconsistent with length!" << endl;
-        return x;
-}
-
-const BigInteger &check(const BigInteger &x) {
-        if (x.getSign() == 0 && !x.getMagnitude().isZero())
-                cout << "check: Sign should not be zero!" << endl;
-        if (x.getSign() != 0 && x.getMagnitude().isZero())
-                cout << "check: Sign should be zero!" << endl;
-        check(x.getMagnitude());
-        return x;
-}
-
-short pathologicalShort = ~((unsigned short)(~0) >> 1);
-int pathologicalInt = ~((unsigned int)(~0) >> 1);
-long pathologicalLong = ~((unsigned long)(~0) >> 1);
-
-int main() {
-
-try {
-
-BigUnsigned z(0), one(1), ten(10);
-TEST(z); //0
-TEST(1); //1
-TEST(10); //10
-
-// TODO: Comprehensively test the general and special cases of each function.
-
-// === Default constructors ===
-
-TEST(check(BigUnsigned())); //0
-TEST(check(BigInteger())); //0
-
-// === Block-array constructors ===
-
-BigUnsigned::Blk myBlocks[3];
-myBlocks[0] = 3;
-myBlocks[1] = 4;
-myBlocks[2] = 0;
-BigUnsigned bu(myBlocks, 3);
-TEST(check(bu)); //17179869187
-TEST(check(BigInteger(myBlocks, 3))); //17179869187
-TEST(check(BigInteger(bu         ))); //17179869187
-
-// For nonzero magnitude, reject zero and invalid signs.
-TEST(check(BigInteger(myBlocks, 3, BigInteger::positive))); //17179869187
-TEST(check(BigInteger(myBlocks, 3, BigInteger::negative))); //-17179869187
-TEST(check(BigInteger(myBlocks, 3, BigInteger::zero    ))); //error
-TEST(check(BigInteger(bu,          BigInteger::positive))); //17179869187
-TEST(check(BigInteger(bu,          BigInteger::negative))); //-17179869187
-TEST(check(BigInteger(bu,          BigInteger::zero    ))); //error
-
-// For zero magnitude, force the sign to zero without error.
-BigUnsigned::Blk myZeroBlocks[1];
-myZeroBlocks[0] = 0;
-TEST(check(BigInteger(myZeroBlocks, 1, BigInteger::positive))); //0
-TEST(check(BigInteger(myZeroBlocks, 1, BigInteger::negative))); //0
-TEST(check(BigInteger(myZeroBlocks, 1, BigInteger::zero    ))); //0
-
-// === BigUnsigned conversion limits ===
-
-TEST(BigUnsigned(0).toUnsignedLong()); //0
-TEST(BigUnsigned(4294967295U).toUnsignedLong()); //4294967295
-TEST(stringToBigUnsigned("4294967296").toUnsignedLong()); //error
-
-TEST(BigUnsigned(0).toLong()); //0
-TEST(BigUnsigned(2147483647).toLong()); //2147483647
-TEST(BigUnsigned(2147483648U).toLong()); //error
-
-// int is the same as long on a 32-bit system
-TEST(BigUnsigned(0).toUnsignedInt()); //0
-TEST(BigUnsigned(4294967295U).toUnsignedInt()); //4294967295
-TEST(stringToBigUnsigned("4294967296").toUnsignedInt()); //error
-
-TEST(BigUnsigned(0).toInt()); //0
-TEST(BigUnsigned(2147483647).toInt()); //2147483647
-TEST(BigUnsigned(2147483648U).toInt()); //error
-
-TEST(BigUnsigned(0).toUnsignedShort()); //0
-TEST(BigUnsigned(65535).toUnsignedShort()); //65535
-TEST(BigUnsigned(65536).toUnsignedShort()); //error
-
-TEST(BigUnsigned(0).toShort()); //0
-TEST(BigUnsigned(32767).toShort()); //32767
-TEST(BigUnsigned(32768).toShort()); //error
-
-// === BigInteger conversion limits ===
-
-TEST(BigInteger(-1).toUnsignedLong()); //error
-TEST(BigInteger(0).toUnsignedLong()); //0
-TEST(BigInteger(4294967295U).toUnsignedLong()); //4294967295
-TEST(stringToBigInteger("4294967296").toUnsignedLong()); //error
-
-TEST(stringToBigInteger("-2147483649").toLong()); //error
-TEST(stringToBigInteger("-2147483648").toLong()); //-2147483648
-TEST(BigInteger(-2147483647).toLong()); //-2147483647
-TEST(BigInteger(0).toLong()); //0
-TEST(BigInteger(2147483647).toLong()); //2147483647
-TEST(BigInteger(2147483648U).toLong()); //error
-
-// int is the same as long on a 32-bit system
-TEST(BigInteger(-1).toUnsignedInt()); //error
-TEST(BigInteger(0).toUnsignedInt()); //0
-TEST(BigInteger(4294967295U).toUnsignedInt()); //4294967295
-TEST(stringToBigInteger("4294967296").toUnsignedInt()); //error
-
-TEST(stringToBigInteger("-2147483649").toInt()); //error
-TEST(stringToBigInteger("-2147483648").toInt()); //-2147483648
-TEST(BigInteger(-2147483647).toInt()); //-2147483647
-TEST(BigInteger(0).toInt()); //0
-TEST(BigInteger(2147483647).toInt()); //2147483647
-TEST(BigInteger(2147483648U).toInt()); //error
-
-TEST(BigInteger(-1).toUnsignedShort()); //error
-TEST(BigInteger(0).toUnsignedShort()); //0
-TEST(BigInteger(65535).toUnsignedShort()); //65535
-TEST(BigInteger(65536).toUnsignedShort()); //error
-
-TEST(BigInteger(-32769).toShort()); //error
-TEST(BigInteger(-32768).toShort()); //-32768
-TEST(BigInteger(-32767).toShort()); //-32767
-TEST(BigInteger(0).toShort()); //0
-TEST(BigInteger(32767).toShort()); //32767
-TEST(BigInteger(32768).toShort()); //error
-
-// === Negative BigUnsigneds ===
-
-// ...during construction
-TEST(BigUnsigned(short(-1))); //error
-TEST(BigUnsigned(pathologicalShort)); //error
-TEST(BigUnsigned(-1)); //error
-TEST(BigUnsigned(pathologicalInt)); //error
-TEST(BigUnsigned(long(-1))); //error
-TEST(BigUnsigned(pathologicalLong)); //error
-
-// ...during subtraction
-TEST(BigUnsigned(5) - BigUnsigned(6)); //error
-TEST(stringToBigUnsigned("314159265358979323") - stringToBigUnsigned("314159265358979324")); //error
-TEST(check(BigUnsigned(5) - BigUnsigned(5))); //0
-TEST(check(stringToBigUnsigned("314159265358979323") - stringToBigUnsigned("314159265358979323"))); //0
-TEST(check(stringToBigUnsigned("4294967296") - BigUnsigned(1))); //4294967295
-
-// === BigUnsigned addition ===
-
-TEST(check(BigUnsigned(0) + 0)); //0
-TEST(check(BigUnsigned(0) + 1)); //1
-// Ordinary carry
-TEST(check(stringToBigUnsigned("8589934591" /* 2^33 - 1*/)
-                + stringToBigUnsigned("4294967298" /* 2^32 + 2 */))); //12884901889
-// Creation of a new block
-TEST(check(BigUnsigned(0xFFFFFFFFU) + 1)); //4294967296
-
-// === BigUnsigned subtraction ===
-
-TEST(check(BigUnsigned(1) - 0)); //1
-TEST(check(BigUnsigned(1) - 1)); //0
-TEST(check(BigUnsigned(2) - 1)); //1
-// Ordinary borrow
-TEST(check(stringToBigUnsigned("12884901889")
-                - stringToBigUnsigned("4294967298"))); //8589934591
-// Borrow that removes a block
-TEST(check(stringToBigUnsigned("4294967296") - 1)); //4294967295
-
-// === BigUnsigned multiplication and division ===
-
-BigUnsigned a = check(BigUnsigned(314159265) * 358979323);
-TEST(a); //112776680263877595
-TEST(a / 123); //916883579381118
-TEST(a % 123); //81
-
-TEST(BigUnsigned(5) / 0); //error
-
-// === Block accessors ===
-
-BigUnsigned b;
-TEST(b); //0
-TEST(b.getBlock(0)); //0
-b.setBlock(1, 314);
-// Did b grow properly?  And did we zero intermediate blocks?
-TEST(check(b)); //1348619730944
-TEST(b.getLength()); //2
-TEST(b.getBlock(0)); //0
-TEST(b.getBlock(1)); //314
-// Did b shrink properly?
-b.setBlock(1, 0);
-TEST(check(b)); //0
-
-BigUnsigned bb(314);
-bb.setBlock(1, 159);
-// Make sure we used allocateAndCopy, not allocate
-TEST(bb.getBlock(0)); //314
-TEST(bb.getBlock(1)); //159
-// Blocks beyond the number should be zero regardless of whether they are
-// within the capacity.
-bb.add(1, 2);
-TEST(bb.getBlock(0)); //3
-TEST(bb.getBlock(1)); //0
-TEST(bb.getBlock(2)); //0
-TEST(bb.getBlock(314159)); //0
-
-// === Bit accessors ===
-
-TEST(BigUnsigned(0).bitLength()); //0
-TEST(BigUnsigned(1).bitLength()); //1
-TEST(BigUnsigned(4095).bitLength()); //12
-TEST(BigUnsigned(4096).bitLength()); //13
-// 5 billion is between 2^32 (about 4 billion) and 2^33 (about 8 billion).
-TEST(stringToBigUnsigned("5000000000").bitLength()); //33
-
-// 25 is binary 11001.
-BigUnsigned bbb(25);
-TEST(bbb.getBit(4)); //1
-TEST(bbb.getBit(3)); //1
-TEST(bbb.getBit(2)); //0
-TEST(bbb.getBit(1)); //0
-TEST(bbb.getBit(0)); //1
-TEST(bbb.bitLength()); //5
-// Effectively add 2^32.
-bbb.setBit(32, true);
-TEST(bbb); //4294967321
-bbb.setBit(31, true);
-bbb.setBit(32, false);
-TEST(check(bbb)); //2147483673
-
-// === Combining BigUnsigned, BigInteger, and primitive integers ===
-
-BigUnsigned p1 = BigUnsigned(3) * 5;
-TEST(p1); //15
-/* In this case, we would like g++ to implicitly promote the BigUnsigned to a
- * BigInteger, but it seems to prefer converting the -5 to a BigUnsigned, which
- * causes an error.  If I take out constructors for BigUnsigned from signed
- * primitive integers, the BigUnsigned(3) becomes ambiguous, and if I take out
- * all the constructors but BigUnsigned(unsigned long), g++ uses that
- * constructor and gets a wrong (positive) answer.  Thus, I think we'll just
- * have to live with this cast. */
-BigInteger p2 = BigInteger(BigUnsigned(3)) * -5;
-TEST(p2); //-15
-
-// === Test some previous bugs ===
-
-{
-        /* Test that BigInteger division sets the sign to zero.
-         * Bug reported by David Allen. */
-        BigInteger num(3), denom(5), quotient;
-        num.divideWithRemainder(denom, quotient);
-        check(quotient);
-        num = 5;
-        num.divideWithRemainder(denom, quotient);
-        check(num);
-}
-
-{
-        /* Test that BigInteger subtraction sets the sign properly.
-         * Bug reported by Samuel Larkin. */
-        BigInteger zero(0), three(3), ans;
-        ans = zero - three;
-        TEST(check(ans).getSign()); //-1
-}
-
-{
-        /* Test that BigInteger multiplication shifts bits properly on systems
-         * where long is bigger than int.  (Obviously, this would only catch the
-         * bug when run on such a system.)
-         * Bug reported by Mohand Mezmaz. */
-        BigInteger f=4; f*=3;
-        TEST(check(f)); //12
-}
-
-{
-        /* Test that bitwise XOR allocates the larger length.
-         * Bug reported by Sriram Sankararaman. */
-        BigUnsigned a(0), b(3), ans;
-        ans = a ^ b;
-        TEST(ans); //3
-}
-
-{
-        /* Test that an aliased multiplication works.
-         * Bug reported by Boris Dessy. */
-        BigInteger num(5);
-        num *= num;
-        TEST(check(num)); //25
-}
-
-{
-        /* Test that BigUnsignedInABase(std::string) constructor rejects digits
-         * too big for the specified base.
-         * Bug reported by Niakam Kazemi. */
-        TEST(BigUnsignedInABase("f", 10)); //error
-}
-
-} catch (const char *err) {
-        cout << "UNCAUGHT ERROR: " << err << endl;
-}
-
-return 0;
-}