diff --git a/test/BigTest.hpp b/test/BigTest.hpp
index d587075..81abb56 100644
--- a/test/BigTest.hpp
+++ b/test/BigTest.hpp
@@ -1,36 +1,36 @@
-#include "Test.hpp"
-#include "storm/Big.hpp"
-#include <vector>
-
-class BigData;
-
-// Fixture for repetitive handling of BigData objects.
-struct BigDataTest {
-    using BigDataPtr = BigData*;
-
-    BigData* num;
-
-    BigDataTest() { SBigNew(&num); }
-    ~BigDataTest() { SBigDel(num); }
-
-    BigData** operator &() { return &num; }
-    operator BigDataPtr() const { return num; }
-    BigData* operator->() const { return num; }
-
-    uint32_t ToUnsigned() {
-        uint32_t result;
-        SBigToUnsigned(num, &result);
-        return result;
-    }
-
-    std::vector<uint8_t> ToBinaryBuffer() {
-        uint32_t size = 1024 * 1024;
-        std::vector<uint8_t> data(size);
-
-        uint32_t bytes = 0;
-        SBigToBinaryBuffer(this->num, data.data(), size, &bytes);
-        data.resize(bytes);
-
-        return data;
-    }
-};
+#include "Test.hpp"
+#include "storm/Big.hpp"
+#include <vector>
+
+class BigData;
+
+// Fixture for repetitive handling of BigData objects.
+struct BigDataTest {
+    using BigDataPtr = BigData*;
+
+    BigData* num;
+
+    BigDataTest() { SBigNew(&num); }
+    ~BigDataTest() { SBigDel(num); }
+
+    BigData** operator &() { return &num; }
+    operator BigDataPtr() const { return num; }
+    BigData* operator->() const { return num; }
+
+    uint32_t ToUnsigned() {
+        uint32_t result;
+        SBigToUnsigned(num, &result);
+        return result;
+    }
+
+    std::vector<uint8_t> ToBinaryBuffer() {
+        uint32_t size = 1024 * 1024;
+        std::vector<uint8_t> data(size);
+
+        uint32_t bytes = 0;
+        SBigToBinaryBuffer(this->num, data.data(), size, &bytes);
+        data.resize(bytes);
+
+        return data;
+    }
+};
diff --git a/test/big/Internal.cpp b/test/big/Internal.cpp
index b680962..4540371 100644
--- a/test/big/Internal.cpp
+++ b/test/big/Internal.cpp
@@ -1,616 +1,616 @@
-// These are the original SBig tests which rely on internals
-#include "test/BigTest.hpp"
-#include "storm/big/BigData.hpp"
-#include <string>
-
-TEST_CASE("SBigAdd internal", "[big]") {
-    BigDataTest a, b, c;
-
-    SECTION("adds 0 and 1") {
-        SBigFromUnsigned(b, 0);
-        SBigFromUnsigned(c, 1);
-
-        SBigAdd(a, b, c);
-
-        CHECK(a->Primary().Count() == 1);
-        CHECK(a->Primary()[0] == 1);
-    }
-
-    SECTION("adds 1 and 2") {
-        SBigFromUnsigned(b, 1);
-        SBigFromUnsigned(c, 2);
-
-        SBigAdd(a, b, c);
-
-        CHECK(a->Primary().Count() == 1);
-        CHECK(a->Primary()[0] == 3);
-    }
-
-    SECTION("adds 0x12345678 and 0x23456789") {
-        SBigFromUnsigned(b, 0x12345678);
-        SBigFromUnsigned(c, 0x23456789);
-
-        SBigAdd(a, b, c);
-
-        CHECK(a->Primary().Count() == 1);
-        CHECK(a->Primary()[0] == 0x3579BE01);
-    }
-
-    SECTION("adds 0xFFFFFFFF and 0xF0F0F0F0") {
-        SBigFromUnsigned(b, 0xFFFFFFFF);
-        SBigFromUnsigned(c, 0xF0F0F0F0);
-
-        SBigAdd(a, b, c);
-
-        CHECK(a->Primary().Count() == 2);
-        CHECK(a->Primary()[0] == 0xF0F0F0EF);
-        CHECK(a->Primary()[1] == 0x1);
-    }
-}
-
-TEST_CASE("SBigAnd internal", "[big]") {
-    BigDataTest a, b, c;
-
-    SECTION("overwrites output") {
-        SBigFromUnsigned(a, 123456);
-        SBigFromUnsigned(b, 0);
-        SBigFromUnsigned(c, 0);
-
-        SBigAnd(a, b, c);
-
-        CHECK(a->Primary().Count() == 1);
-        CHECK(a->Primary()[0] == 0);
-    }
-
-    SECTION("performs bitwise and on large nums") {
-        uint8_t data[] = {
-            1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 31, 12, 13, 14, 15
-        };
-        uint8_t data2[] = {
-            0, 0, 0, 6, 6, 0, 6, 0, 0, 6, 0xFF, 6, 0, 6, 0
-        };
-        SBigFromBinary(b, data, sizeof(data));
-        SBigFromBinary(c, data2, sizeof(data2));
-
-        SBigAnd(a, b, c);
-
-        CHECK(a->Primary().Count() == 4);
-        CHECK(a->Primary()[0] == 0x04000000);
-        CHECK(a->Primary()[1] == 0x00060004);
-        CHECK(a->Primary()[2] == 0x041F0200);
-        CHECK(a->Primary()[3] == 0x00000600);
-    }
-}
-
-TEST_CASE("SBigCopy internal", "[big]") {
-    BigDataTest a, b;
-
-    SECTION("copies data") {
-        uint8_t num[] = { 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9 };
-        SBigFromBinary(a, num, sizeof(num));
-        SBigFromUnsigned(b, 42);
-
-        CHECK(a->Primary().Count() == 4);
-
-        SBigCopy(a, b);
-
-        CHECK(a->Primary().Count() == 1);
-        CHECK(a->Primary()[0] == 42);
-    }
-}
-
-TEST_CASE("SBigDec internal", "[big]") {
-    BigDataTest a, b;
-
-    SECTION("decrements value by 1") {
-        SBigFromUnsigned(b, 5);
-
-        SBigDec(a, b);
-
-        CHECK(a->Primary().Count() == 1);
-        CHECK(a->Primary()[0] == 4);
-    }
-
-#ifdef NDEBUG
-    SECTION("decrements from 0") {
-        SBigFromUnsigned(b, 0);
-
-        SBigDec(a, b);
-
-        CHECK(a->Primary().Count() == 1);
-        CHECK(a->Primary()[0] == 0xFFFFFFFF);
-    }
-#endif
-}
-
-TEST_CASE("SBigDiv internal", "[big]") {
-    BigDataTest a, b, c;
-
-    SECTION("divides 2 by 1") {
-        SBigFromUnsigned(b, 2);
-        SBigFromUnsigned(c, 1);
-
-        SBigDiv(a, b, c);
-
-        CHECK(a->Primary().Count() == 1);
-        CHECK(a->Primary()[0] == 2);
-    }
-
-    SECTION("divides 5 by 2") {
-        SBigFromUnsigned(b, 5);
-        SBigFromUnsigned(c, 2);
-
-        SBigDiv(a, b, c);
-
-        CHECK(a->Primary().Count() == 1);
-        CHECK(a->Primary()[0] == 2);
-    }
-
-    SECTION("divides 7 by 4") {
-        SBigFromUnsigned(b, 7);
-        SBigFromUnsigned(c, 4);
-
-        SBigDiv(a, b, c);
-
-        CHECK(a->Primary().Count() == 1);
-        CHECK(a->Primary()[0] == 1);
-    }
-
-    SECTION("divides 0x9999444488885555 by 0x2222") {
-        SBigFromStr(b, std::to_string(0x9999444488885555ULL).c_str());
-        SBigFromUnsigned(c, 0x2222);
-
-        SBigDiv(a, b, c);
-
-        CHECK(a->Primary().Count() == 2);
-        CHECK(a->Primary()[0] == 0x00040002);
-        CHECK(a->Primary()[1] == 0x48002);
-    }
-
-    SECTION("divides 0x9999444488885555 by 0xFFFFFFFF") {
-        SBigFromStr(b, std::to_string(0x9999444488885555ULL).c_str());
-        SBigFromUnsigned(c, 0xFFFFFFFF);
-
-        SBigDiv(a, b, c);
-
-        CHECK(a->Primary().Count() == 1);
-        CHECK(a->Primary()[0] == 0x99994445);
-    }
-
-    SECTION("divides 0x9999444488885555 by 0x1111222233334444 (buffer divisor)") {
-        SBigFromStr(b, std::to_string(0x9999444488885555ULL).c_str());
-        SBigFromStr(c, std::to_string(0x1111222233334444ULL).c_str());
-
-        SBigDiv(a, b, c);
-
-        CHECK(a->Primary().Count() == 1);
-        CHECK(a->Primary()[0] == 8);
-    }
-}
-
-TEST_CASE("SBigFromBinary internal", "[big]") {
-    BigDataTest num;
-
-    SECTION("creates bigdata from 0") {
-        uint32_t data = 0;
-        SBigFromBinary(num, reinterpret_cast<uint8_t*>(&data), sizeof(data));
-
-        CHECK(num->Primary().Count() == 1);
-        CHECK(num->Primary()[0] == 0);
-    }
-
-    SECTION("creates bigdata from 0x123456789ABCDEF0") {
-        uint64_t data = 0x123456789ABCDEF0;
-        SBigFromBinary(num, reinterpret_cast<uint8_t*>(&data), sizeof(data));
-
-        CHECK(num->Primary().Count() == 2);
-        CHECK(num->Primary()[0] == 0x9ABCDEF0);
-        CHECK(num->Primary()[1] == 0x12345678);
-    }
-}
-
-TEST_CASE("SBigFromStr internal", "[big]") {
-    BigDataTest num;
-
-    SECTION("with empty string") {
-        SBigFromStr(num, "");
-
-        CHECK(num->Primary().Count() == 0);
-    }
-
-    SECTION("with string containing numbers") {
-        SBigFromStr(num, "123456");
-
-        CHECK(num->Primary().Count() == 1);
-        CHECK(num->Primary()[0] == 123456);
-    }
-
-    SECTION("with string containing letters (original bug)") {
-        SBigFromStr(num, "ABC");
-
-        const unsigned int expected_num = ('A' - '0') * 100 + ('B' - '0') * 10 + ('C' - '0');
-
-        CHECK(num->Primary().Count() == 1);
-        CHECK(num->Primary()[0] == expected_num);
-    }
-}
-
-TEST_CASE("SBigFromUnsigned internal", "[big]") {
-    BigDataTest num;
-
-    SECTION("creates bigdata from 0") {
-        SBigFromUnsigned(num, 0);
-
-        CHECK(num->Primary().Count() == 1);
-        CHECK(num->Primary()[0] == 0);
-    }
-
-    SECTION("creates bigdata from 0x12345678") {
-        SBigFromUnsigned(num, 0x12345678);
-
-        CHECK(num->Primary().Count() == 1);
-        CHECK(num->Primary()[0] == 0x12345678);
-    }
-}
-TEST_CASE("SBigInc internal", "[big]") {
-    BigDataTest a, b;
-
-    SECTION("increments from 0") {
-        SBigFromUnsigned(b, 0);
-
-        SBigInc(a, b);
-
-        CHECK(a->Primary().Count() == 1);
-        CHECK(a->Primary()[0] == 1);
-    }
-
-    SECTION("increments from max uint") {
-        SBigFromUnsigned(b, UINT32_MAX);
-
-        SBigInc(a, b);
-
-        CHECK(a->Primary().Count() == 2);
-        CHECK(a->Primary()[0] == 0);
-        CHECK(a->Primary()[1] == 1);
-    }
-
-    SECTION("increments from a number") {
-        SBigFromUnsigned(b, 1337);
-
-        SBigInc(a, b);
-
-        CHECK(a->Primary().Count() == 1);
-        CHECK(a->Primary()[0] == 1338);
-    }
-}
-
-TEST_CASE("SBigMod internal", "[big]") {
-    BigDataTest a, b, c;
-    SECTION("mods 7 by 4") {
-        SBigFromUnsigned(b, 7);
-        SBigFromUnsigned(c, 4);
-
-        SBigMod(a, b, c);
-
-        a->Primary().Trim();
-
-        CHECK(a->Primary().Count() == 1);
-        CHECK(a->Primary()[0] == 3);
-    }
-
-    SECTION("mods 7 by 4 then mods 9 by 5") {
-        BigDataTest b1, c1, b2, c2;
-
-        SBigFromUnsigned(b1, 7);
-        SBigFromUnsigned(c1, 4);
-        SBigFromUnsigned(b2, 9);
-        SBigFromUnsigned(c2, 5);
-
-        SBigMod(a, b1, c1);
-
-        a->Primary().Trim();
-
-        CHECK(a->Primary().Count() == 1);
-        CHECK(a->Primary()[0] == 3);
-
-        SBigMod(a, b2, c2);
-
-        a->Primary().Trim();
-
-        CHECK(a->Primary().Count() == 1);
-        CHECK(a->Primary()[0] == 4);
-    }
-
-    SECTION("mods 0x9999444488885555 by 0xFFFFFFFF") {
-        uint64_t b_ = 0x9999444488885555;
-        SBigFromBinary(b, reinterpret_cast<uint8_t*>(&b_), sizeof(b_));
-        SBigFromUnsigned(c, 0xFFFFFFFF);
-
-        SBigMod(a, b, c);
-
-        a->Primary().Trim();
-
-        CHECK(a->Primary().Count() == 1);
-        CHECK(a->Primary()[0] == 0x2221999A);
-    }
-}
-
-TEST_CASE("SBigMul internal", "[big]") {
-    BigDataTest a, b, c;
-
-    SECTION("multiplies 0 and 1") {
-        SBigFromUnsigned(b, 0);
-        SBigFromUnsigned(c, 1);
-
-        SBigMul(a, b, c);
-
-        a->Primary().Trim();
-
-        CHECK(a->Primary().Count() == 0);
-    }
-
-    SECTION("multiplies 2 and 4") {
-        SBigFromUnsigned(b, 2);
-        SBigFromUnsigned(c, 4);
-
-        SBigMul(a, b, c);
-
-        a->Primary().Trim();
-
-        CHECK(a->Primary().Count() == 1);
-        CHECK(a->Primary()[0] == 8);
-    }
-
-    SECTION("multiplies 0xFFFFFFFF and 0x100") {
-        SBigFromUnsigned(b, 0xFFFFFFFF);
-        SBigFromUnsigned(c, 0x100);
-
-        SBigMul(a, b, c);
-
-        a->Primary().Trim();
-
-        CHECK(a->Primary().Count() == 2);
-        CHECK(a->Primary()[0] == 0xFFFFFF00);
-        CHECK(a->Primary()[1] == 0xFF);
-    }
-
-    SECTION("multiplies 0xFFFFFF and 0x11223344") {
-        SBigFromUnsigned(b, 0xFFFFFF);
-        SBigFromUnsigned(c, 0x11223344);
-
-        SBigMul(a, b, c);
-
-        a->Primary().Trim();
-
-        CHECK(a->Primary().Count() == 2);
-        CHECK(a->Primary()[0] == 0x32DDCCBC);
-        CHECK(a->Primary()[1] == 0x112233);
-    }
-}
-
-TEST_CASE("SBigPowMod internal", "[big]") {
-    BigDataTest a, b, c, d;
-    SECTION("takes 256 to the 8th power and mods the result by 999") {
-        SBigFromUnsigned(b, 256);
-        SBigFromUnsigned(c, 8);
-        SBigFromUnsigned(d, 999);
-
-        SBigPowMod(a, b, c, d);
-
-        a->Primary().Trim();
-
-        CHECK(a->Primary().Count() == 1);
-        CHECK(a->Primary()[0] == 160);
-    }
-}
-
-TEST_CASE("SBigNot internal", "[big]") {
-    BigDataTest a, b;
-
-    SECTION("bitwise negates small values") {
-        auto v = GENERATE(uint32_t(1), 2, 10, 0xFFFFFFFF);
-
-        SBigFromUnsigned(b, v);
-        SBigNot(a, b);
-
-        CHECK(a->Primary().Count() == 1);
-        CHECK(a->Primary()[0] == ~v);
-    }
-
-    SECTION("bitwise negates large values") {
-        auto v = GENERATE(10000000000000ULL, 0xFF00000000000000ULL);
-
-        SBigFromStr(b, std::to_string(v).c_str());
-        SBigNot(a, b);
-
-        CHECK(a->Primary().Count() == 2);
-        CHECK(a->Primary()[0] == ~uint32_t(v));
-        CHECK(a->Primary()[1] == ~uint32_t(v >> 32));
-    }
-
-    SECTION("bitwise negates huge value") {
-        uint32_t data[] = { 0xF00DFEED, 0xBA1D, 0xBEEBBEEB, 0x12345678, 0x9ABCDEF, 0xDEADCAD, 0xD011A };
-        
-        SBigFromBinary(b, data, sizeof(data));
-        SBigNot(a, b);
-
-        CHECK(a->Primary().Count() == 7);
-        CHECK(a->Primary()[0] == ~data[0]);
-        CHECK(a->Primary()[1] == ~data[1]);
-        CHECK(a->Primary()[2] == ~data[2]);
-        CHECK(a->Primary()[3] == ~data[3]);
-        CHECK(a->Primary()[4] == ~data[4]);
-        CHECK(a->Primary()[5] == ~data[5]);
-        CHECK(a->Primary()[6] == ~data[6]);
-    }
-}
-
-TEST_CASE("SBigOr internal", "[big]") {
-    BigDataTest a, b, c;
-
-    SECTION("performs bitwise or on small numbers") {
-        auto v = GENERATE(
-            std::make_pair(0UL, 0UL),
-            std::make_pair(0UL, 123UL),
-            std::make_pair(41689UL, 786740UL)
-        );
-
-        SBigFromUnsigned(b, v.first);
-        SBigFromUnsigned(c, v.second);
-        SBigOr(a, b, c);
-
-        CHECK(a->Primary().Count() == 1);
-        CHECK(a->Primary()[0] == (v.first | v.second));
-    }
-
-    SECTION("performs bitwise or on large numbers") {
-        auto v = GENERATE(
-            std::make_pair(0xFF00FF00FF00FF00ULL, 0xFF00FF00FF00FFULL)
-        );
-
-        SBigFromStr(b, std::to_string(v.first).c_str());
-        SBigFromStr(c, std::to_string(v.second).c_str());
-        SBigOr(a, b, c);
-
-        CHECK(a->Primary().Count() == 2);
-        CHECK(a->Primary()[0] == 0xFFFFFFFF);
-        CHECK(a->Primary()[1] == 0xFFFFFFFF);
-    }
-
-    SECTION("performs bitwise or on huge value") {
-        uint32_t data[] = { 0xF00DFEEDUL, 0xBA1DUL, 0xBEEBBEEBUL, 0x12345678UL, 0x9ABCDEFUL, 0xDEADCADUL, 0xD011AUL };
-
-        SBigFromBinary(b, data, sizeof(data));
-        SBigFromUnsigned(c, 0x11111111UL);
-        SBigOr(a, b, c);
-
-        CHECK(a->Primary().Count() == 7);
-        CHECK(a->Primary()[0] == 0xF11DFFFD);
-        CHECK(a->Primary()[1] == data[1]);
-        CHECK(a->Primary()[2] == data[2]);
-        CHECK(a->Primary()[3] == data[3]);
-        CHECK(a->Primary()[4] == data[4]);
-        CHECK(a->Primary()[5] == data[5]);
-        CHECK(a->Primary()[6] == data[6]);
-    }
-}
-
-TEST_CASE("SBigShl internal", "[big]") {
-    BigDataTest a, b;
-
-    SECTION("shifts 256 left 7 bits") {
-        SBigFromUnsigned(b, 256);
-
-        SBigShl(a, b, 7);
-
-        a->Primary().Trim();
-
-        CHECK(a->Primary().Count() == 1);
-        CHECK(a->Primary()[0] == 32768);
-    }
-}
-
-TEST_CASE("SBigShr internal", "[big]") {
-    BigDataTest a, b;
-
-    SECTION("shifts 256 right 7 bits") {
-        SBigFromUnsigned(b, 256);
-
-        SBigShr(a, b, 7);
-
-        a->Primary().Trim();
-
-        CHECK(a->Primary().Count() == 1);
-        CHECK(a->Primary()[0] == 2);
-    }
-}
-
-TEST_CASE("SBigSquare internal", "[big]") {
-    BigDataTest a, b;
-
-    SECTION("squares 0xFFFFFFFF") {
-        SBigFromUnsigned(b, 0xFFFFFFFF);
-
-        SBigSquare(a, b);
-
-        a->Primary().Trim();
-
-        CHECK(a->Primary().Count() == 2);
-        CHECK(a->Primary()[0] == 0x1);
-        CHECK(a->Primary()[1] == 0xFFFFFFFE);
-    }
-}
-
-TEST_CASE("SBigSub internal", "[big]") {
-    BigDataTest a, b, c;
-
-    SECTION("subtracts 1 from 2") {
-        SBigFromUnsigned(b, 2);
-        SBigFromUnsigned(c, 1);
-
-        SBigSub(a, b, c);
-
-        a->Primary().Trim();
-
-        CHECK(a->Primary().Count() == 1);
-        CHECK(a->Primary()[0] == 1);
-    }
-
-#ifdef NDEBUG
-    SECTION("subtracts 1 from 0") {
-        SBigFromUnsigned(b, 0);
-        SBigFromUnsigned(c, 1);
-
-        SBigSub(a, b, c);
-
-        CHECK(a->Primary().Count() == 1);
-        CHECK(a->Primary()[0] == 0xFFFFFFFF);
-    }
-#endif
-}
-
-TEST_CASE("SBigXor internal", "[big]") {
-    BigDataTest a, b, c;
-
-    SECTION("performs bitwise xor on small numbers") {
-        auto v = GENERATE(
-            std::make_pair(0UL, 0UL),
-            std::make_pair(0UL, 123UL),
-            std::make_pair(41689UL, 786740UL)
-        );
-
-        SBigFromUnsigned(b, v.first);
-        SBigFromUnsigned(c, v.second);
-        SBigXor(a, b, c);
-
-        CHECK(a->Primary().Count() == 1);
-        CHECK(a->Primary()[0] == (v.first ^ v.second));
-    }
-
-    SECTION("performs bitwise xor on large number") {
-        SBigFromStr(b, std::to_string(0xFF00FF00FF00FF00ULL).c_str());
-        SBigFromStr(c, std::to_string(0xFF00FF00FF00FULL).c_str());
-        SBigXor(a, b, c);
-
-        CHECK(a->Primary().Count() == 2);
-        CHECK(a->Primary()[0] == 0xF0F0F0F);
-        CHECK(a->Primary()[1] == 0xFF0F0F0F);
-    }
-
-    SECTION("performs bitwise xor on huge value") {
-        uint32_t data[] = { 0xF00DFEEDUL, 0xBA1DUL, 0xBEEBBEEBUL, 0x12345678UL, 0x9ABCDEFUL, 0xDEADCADUL, 0xD011AUL };
-
-        SBigFromBinary(b, data, sizeof(data));
-        SBigFromUnsigned(c, 0x1111111FUL);
-        SBigXor(a, b, c);
-
-        CHECK(a->Primary().Count() == 7);
-        CHECK(a->Primary()[0] == 0xE11CEFF2);
-        CHECK(a->Primary()[1] == data[1]);
-        CHECK(a->Primary()[2] == data[2]);
-        CHECK(a->Primary()[3] == data[3]);
-        CHECK(a->Primary()[4] == data[4]);
-        CHECK(a->Primary()[5] == data[5]);
-        CHECK(a->Primary()[6] == data[6]);
-    }
-}
+// These are the original SBig tests which rely on internals
+#include "test/BigTest.hpp"
+#include "storm/big/BigData.hpp"
+#include <string>
+
+TEST_CASE("SBigAdd internal", "[big]") {
+    BigDataTest a, b, c;
+
+    SECTION("adds 0 and 1") {
+        SBigFromUnsigned(b, 0);
+        SBigFromUnsigned(c, 1);
+
+        SBigAdd(a, b, c);
+
+        CHECK(a->Primary().Count() == 1);
+        CHECK(a->Primary()[0] == 1);
+    }
+
+    SECTION("adds 1 and 2") {
+        SBigFromUnsigned(b, 1);
+        SBigFromUnsigned(c, 2);
+
+        SBigAdd(a, b, c);
+
+        CHECK(a->Primary().Count() == 1);
+        CHECK(a->Primary()[0] == 3);
+    }
+
+    SECTION("adds 0x12345678 and 0x23456789") {
+        SBigFromUnsigned(b, 0x12345678);
+        SBigFromUnsigned(c, 0x23456789);
+
+        SBigAdd(a, b, c);
+
+        CHECK(a->Primary().Count() == 1);
+        CHECK(a->Primary()[0] == 0x3579BE01);
+    }
+
+    SECTION("adds 0xFFFFFFFF and 0xF0F0F0F0") {
+        SBigFromUnsigned(b, 0xFFFFFFFF);
+        SBigFromUnsigned(c, 0xF0F0F0F0);
+
+        SBigAdd(a, b, c);
+
+        CHECK(a->Primary().Count() == 2);
+        CHECK(a->Primary()[0] == 0xF0F0F0EF);
+        CHECK(a->Primary()[1] == 0x1);
+    }
+}
+
+TEST_CASE("SBigAnd internal", "[big]") {
+    BigDataTest a, b, c;
+
+    SECTION("overwrites output") {
+        SBigFromUnsigned(a, 123456);
+        SBigFromUnsigned(b, 0);
+        SBigFromUnsigned(c, 0);
+
+        SBigAnd(a, b, c);
+
+        CHECK(a->Primary().Count() == 1);
+        CHECK(a->Primary()[0] == 0);
+    }
+
+    SECTION("performs bitwise and on large nums") {
+        uint8_t data[] = {
+            1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 31, 12, 13, 14, 15
+        };
+        uint8_t data2[] = {
+            0, 0, 0, 6, 6, 0, 6, 0, 0, 6, 0xFF, 6, 0, 6, 0
+        };
+        SBigFromBinary(b, data, sizeof(data));
+        SBigFromBinary(c, data2, sizeof(data2));
+
+        SBigAnd(a, b, c);
+
+        CHECK(a->Primary().Count() == 4);
+        CHECK(a->Primary()[0] == 0x04000000);
+        CHECK(a->Primary()[1] == 0x00060004);
+        CHECK(a->Primary()[2] == 0x041F0200);
+        CHECK(a->Primary()[3] == 0x00000600);
+    }
+}
+
+TEST_CASE("SBigCopy internal", "[big]") {
+    BigDataTest a, b;
+
+    SECTION("copies data") {
+        uint8_t num[] = { 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9 };
+        SBigFromBinary(a, num, sizeof(num));
+        SBigFromUnsigned(b, 42);
+
+        CHECK(a->Primary().Count() == 4);
+
+        SBigCopy(a, b);
+
+        CHECK(a->Primary().Count() == 1);
+        CHECK(a->Primary()[0] == 42);
+    }
+}
+
+TEST_CASE("SBigDec internal", "[big]") {
+    BigDataTest a, b;
+
+    SECTION("decrements value by 1") {
+        SBigFromUnsigned(b, 5);
+
+        SBigDec(a, b);
+
+        CHECK(a->Primary().Count() == 1);
+        CHECK(a->Primary()[0] == 4);
+    }
+
+#ifdef NDEBUG
+    SECTION("decrements from 0") {
+        SBigFromUnsigned(b, 0);
+
+        SBigDec(a, b);
+
+        CHECK(a->Primary().Count() == 1);
+        CHECK(a->Primary()[0] == 0xFFFFFFFF);
+    }
+#endif
+}
+
+TEST_CASE("SBigDiv internal", "[big]") {
+    BigDataTest a, b, c;
+
+    SECTION("divides 2 by 1") {
+        SBigFromUnsigned(b, 2);
+        SBigFromUnsigned(c, 1);
+
+        SBigDiv(a, b, c);
+
+        CHECK(a->Primary().Count() == 1);
+        CHECK(a->Primary()[0] == 2);
+    }
+
+    SECTION("divides 5 by 2") {
+        SBigFromUnsigned(b, 5);
+        SBigFromUnsigned(c, 2);
+
+        SBigDiv(a, b, c);
+
+        CHECK(a->Primary().Count() == 1);
+        CHECK(a->Primary()[0] == 2);
+    }
+
+    SECTION("divides 7 by 4") {
+        SBigFromUnsigned(b, 7);
+        SBigFromUnsigned(c, 4);
+
+        SBigDiv(a, b, c);
+
+        CHECK(a->Primary().Count() == 1);
+        CHECK(a->Primary()[0] == 1);
+    }
+
+    SECTION("divides 0x9999444488885555 by 0x2222") {
+        SBigFromStr(b, std::to_string(0x9999444488885555ULL).c_str());
+        SBigFromUnsigned(c, 0x2222);
+
+        SBigDiv(a, b, c);
+
+        CHECK(a->Primary().Count() == 2);
+        CHECK(a->Primary()[0] == 0x00040002);
+        CHECK(a->Primary()[1] == 0x48002);
+    }
+
+    SECTION("divides 0x9999444488885555 by 0xFFFFFFFF") {
+        SBigFromStr(b, std::to_string(0x9999444488885555ULL).c_str());
+        SBigFromUnsigned(c, 0xFFFFFFFF);
+
+        SBigDiv(a, b, c);
+
+        CHECK(a->Primary().Count() == 1);
+        CHECK(a->Primary()[0] == 0x99994445);
+    }
+
+    SECTION("divides 0x9999444488885555 by 0x1111222233334444 (buffer divisor)") {
+        SBigFromStr(b, std::to_string(0x9999444488885555ULL).c_str());
+        SBigFromStr(c, std::to_string(0x1111222233334444ULL).c_str());
+
+        SBigDiv(a, b, c);
+
+        CHECK(a->Primary().Count() == 1);
+        CHECK(a->Primary()[0] == 8);
+    }
+}
+
+TEST_CASE("SBigFromBinary internal", "[big]") {
+    BigDataTest num;
+
+    SECTION("creates bigdata from 0") {
+        uint32_t data = 0;
+        SBigFromBinary(num, reinterpret_cast<uint8_t*>(&data), sizeof(data));
+
+        CHECK(num->Primary().Count() == 1);
+        CHECK(num->Primary()[0] == 0);
+    }
+
+    SECTION("creates bigdata from 0x123456789ABCDEF0") {
+        uint64_t data = 0x123456789ABCDEF0;
+        SBigFromBinary(num, reinterpret_cast<uint8_t*>(&data), sizeof(data));
+
+        CHECK(num->Primary().Count() == 2);
+        CHECK(num->Primary()[0] == 0x9ABCDEF0);
+        CHECK(num->Primary()[1] == 0x12345678);
+    }
+}
+
+TEST_CASE("SBigFromStr internal", "[big]") {
+    BigDataTest num;
+
+    SECTION("with empty string") {
+        SBigFromStr(num, "");
+
+        CHECK(num->Primary().Count() == 0);
+    }
+
+    SECTION("with string containing numbers") {
+        SBigFromStr(num, "123456");
+
+        CHECK(num->Primary().Count() == 1);
+        CHECK(num->Primary()[0] == 123456);
+    }
+
+    SECTION("with string containing letters (original bug)") {
+        SBigFromStr(num, "ABC");
+
+        const unsigned int expected_num = ('A' - '0') * 100 + ('B' - '0') * 10 + ('C' - '0');
+
+        CHECK(num->Primary().Count() == 1);
+        CHECK(num->Primary()[0] == expected_num);
+    }
+}
+
+TEST_CASE("SBigFromUnsigned internal", "[big]") {
+    BigDataTest num;
+
+    SECTION("creates bigdata from 0") {
+        SBigFromUnsigned(num, 0);
+
+        CHECK(num->Primary().Count() == 1);
+        CHECK(num->Primary()[0] == 0);
+    }
+
+    SECTION("creates bigdata from 0x12345678") {
+        SBigFromUnsigned(num, 0x12345678);
+
+        CHECK(num->Primary().Count() == 1);
+        CHECK(num->Primary()[0] == 0x12345678);
+    }
+}
+TEST_CASE("SBigInc internal", "[big]") {
+    BigDataTest a, b;
+
+    SECTION("increments from 0") {
+        SBigFromUnsigned(b, 0);
+
+        SBigInc(a, b);
+
+        CHECK(a->Primary().Count() == 1);
+        CHECK(a->Primary()[0] == 1);
+    }
+
+    SECTION("increments from max uint") {
+        SBigFromUnsigned(b, UINT32_MAX);
+
+        SBigInc(a, b);
+
+        CHECK(a->Primary().Count() == 2);
+        CHECK(a->Primary()[0] == 0);
+        CHECK(a->Primary()[1] == 1);
+    }
+
+    SECTION("increments from a number") {
+        SBigFromUnsigned(b, 1337);
+
+        SBigInc(a, b);
+
+        CHECK(a->Primary().Count() == 1);
+        CHECK(a->Primary()[0] == 1338);
+    }
+}
+
+TEST_CASE("SBigMod internal", "[big]") {
+    BigDataTest a, b, c;
+    SECTION("mods 7 by 4") {
+        SBigFromUnsigned(b, 7);
+        SBigFromUnsigned(c, 4);
+
+        SBigMod(a, b, c);
+
+        a->Primary().Trim();
+
+        CHECK(a->Primary().Count() == 1);
+        CHECK(a->Primary()[0] == 3);
+    }
+
+    SECTION("mods 7 by 4 then mods 9 by 5") {
+        BigDataTest b1, c1, b2, c2;
+
+        SBigFromUnsigned(b1, 7);
+        SBigFromUnsigned(c1, 4);
+        SBigFromUnsigned(b2, 9);
+        SBigFromUnsigned(c2, 5);
+
+        SBigMod(a, b1, c1);
+
+        a->Primary().Trim();
+
+        CHECK(a->Primary().Count() == 1);
+        CHECK(a->Primary()[0] == 3);
+
+        SBigMod(a, b2, c2);
+
+        a->Primary().Trim();
+
+        CHECK(a->Primary().Count() == 1);
+        CHECK(a->Primary()[0] == 4);
+    }
+
+    SECTION("mods 0x9999444488885555 by 0xFFFFFFFF") {
+        uint64_t b_ = 0x9999444488885555;
+        SBigFromBinary(b, reinterpret_cast<uint8_t*>(&b_), sizeof(b_));
+        SBigFromUnsigned(c, 0xFFFFFFFF);
+
+        SBigMod(a, b, c);
+
+        a->Primary().Trim();
+
+        CHECK(a->Primary().Count() == 1);
+        CHECK(a->Primary()[0] == 0x2221999A);
+    }
+}
+
+TEST_CASE("SBigMul internal", "[big]") {
+    BigDataTest a, b, c;
+
+    SECTION("multiplies 0 and 1") {
+        SBigFromUnsigned(b, 0);
+        SBigFromUnsigned(c, 1);
+
+        SBigMul(a, b, c);
+
+        a->Primary().Trim();
+
+        CHECK(a->Primary().Count() == 0);
+    }
+
+    SECTION("multiplies 2 and 4") {
+        SBigFromUnsigned(b, 2);
+        SBigFromUnsigned(c, 4);
+
+        SBigMul(a, b, c);
+
+        a->Primary().Trim();
+
+        CHECK(a->Primary().Count() == 1);
+        CHECK(a->Primary()[0] == 8);
+    }
+
+    SECTION("multiplies 0xFFFFFFFF and 0x100") {
+        SBigFromUnsigned(b, 0xFFFFFFFF);
+        SBigFromUnsigned(c, 0x100);
+
+        SBigMul(a, b, c);
+
+        a->Primary().Trim();
+
+        CHECK(a->Primary().Count() == 2);
+        CHECK(a->Primary()[0] == 0xFFFFFF00);
+        CHECK(a->Primary()[1] == 0xFF);
+    }
+
+    SECTION("multiplies 0xFFFFFF and 0x11223344") {
+        SBigFromUnsigned(b, 0xFFFFFF);
+        SBigFromUnsigned(c, 0x11223344);
+
+        SBigMul(a, b, c);
+
+        a->Primary().Trim();
+
+        CHECK(a->Primary().Count() == 2);
+        CHECK(a->Primary()[0] == 0x32DDCCBC);
+        CHECK(a->Primary()[1] == 0x112233);
+    }
+}
+
+TEST_CASE("SBigPowMod internal", "[big]") {
+    BigDataTest a, b, c, d;
+    SECTION("takes 256 to the 8th power and mods the result by 999") {
+        SBigFromUnsigned(b, 256);
+        SBigFromUnsigned(c, 8);
+        SBigFromUnsigned(d, 999);
+
+        SBigPowMod(a, b, c, d);
+
+        a->Primary().Trim();
+
+        CHECK(a->Primary().Count() == 1);
+        CHECK(a->Primary()[0] == 160);
+    }
+}
+
+TEST_CASE("SBigNot internal", "[big]") {
+    BigDataTest a, b;
+
+    SECTION("bitwise negates small values") {
+        auto v = GENERATE(uint32_t(1), 2, 10, 0xFFFFFFFF);
+
+        SBigFromUnsigned(b, v);
+        SBigNot(a, b);
+
+        CHECK(a->Primary().Count() == 1);
+        CHECK(a->Primary()[0] == ~v);
+    }
+
+    SECTION("bitwise negates large values") {
+        auto v = GENERATE(10000000000000ULL, 0xFF00000000000000ULL);
+
+        SBigFromStr(b, std::to_string(v).c_str());
+        SBigNot(a, b);
+
+        CHECK(a->Primary().Count() == 2);
+        CHECK(a->Primary()[0] == ~uint32_t(v));
+        CHECK(a->Primary()[1] == ~uint32_t(v >> 32));
+    }
+
+    SECTION("bitwise negates huge value") {
+        uint32_t data[] = { 0xF00DFEED, 0xBA1D, 0xBEEBBEEB, 0x12345678, 0x9ABCDEF, 0xDEADCAD, 0xD011A };
+
+        SBigFromBinary(b, data, sizeof(data));
+        SBigNot(a, b);
+
+        CHECK(a->Primary().Count() == 7);
+        CHECK(a->Primary()[0] == ~data[0]);
+        CHECK(a->Primary()[1] == ~data[1]);
+        CHECK(a->Primary()[2] == ~data[2]);
+        CHECK(a->Primary()[3] == ~data[3]);
+        CHECK(a->Primary()[4] == ~data[4]);
+        CHECK(a->Primary()[5] == ~data[5]);
+        CHECK(a->Primary()[6] == ~data[6]);
+    }
+}
+
+TEST_CASE("SBigOr internal", "[big]") {
+    BigDataTest a, b, c;
+
+    SECTION("performs bitwise or on small numbers") {
+        auto v = GENERATE(
+            std::make_pair(0UL, 0UL),
+            std::make_pair(0UL, 123UL),
+            std::make_pair(41689UL, 786740UL)
+        );
+
+        SBigFromUnsigned(b, v.first);
+        SBigFromUnsigned(c, v.second);
+        SBigOr(a, b, c);
+
+        CHECK(a->Primary().Count() == 1);
+        CHECK(a->Primary()[0] == (v.first | v.second));
+    }
+
+    SECTION("performs bitwise or on large numbers") {
+        auto v = GENERATE(
+            std::make_pair(0xFF00FF00FF00FF00ULL, 0xFF00FF00FF00FFULL)
+        );
+
+        SBigFromStr(b, std::to_string(v.first).c_str());
+        SBigFromStr(c, std::to_string(v.second).c_str());
+        SBigOr(a, b, c);
+
+        CHECK(a->Primary().Count() == 2);
+        CHECK(a->Primary()[0] == 0xFFFFFFFF);
+        CHECK(a->Primary()[1] == 0xFFFFFFFF);
+    }
+
+    SECTION("performs bitwise or on huge value") {
+        uint32_t data[] = { 0xF00DFEEDUL, 0xBA1DUL, 0xBEEBBEEBUL, 0x12345678UL, 0x9ABCDEFUL, 0xDEADCADUL, 0xD011AUL };
+
+        SBigFromBinary(b, data, sizeof(data));
+        SBigFromUnsigned(c, 0x11111111UL);
+        SBigOr(a, b, c);
+
+        CHECK(a->Primary().Count() == 7);
+        CHECK(a->Primary()[0] == 0xF11DFFFD);
+        CHECK(a->Primary()[1] == data[1]);
+        CHECK(a->Primary()[2] == data[2]);
+        CHECK(a->Primary()[3] == data[3]);
+        CHECK(a->Primary()[4] == data[4]);
+        CHECK(a->Primary()[5] == data[5]);
+        CHECK(a->Primary()[6] == data[6]);
+    }
+}
+
+TEST_CASE("SBigShl internal", "[big]") {
+    BigDataTest a, b;
+
+    SECTION("shifts 256 left 7 bits") {
+        SBigFromUnsigned(b, 256);
+
+        SBigShl(a, b, 7);
+
+        a->Primary().Trim();
+
+        CHECK(a->Primary().Count() == 1);
+        CHECK(a->Primary()[0] == 32768);
+    }
+}
+
+TEST_CASE("SBigShr internal", "[big]") {
+    BigDataTest a, b;
+
+    SECTION("shifts 256 right 7 bits") {
+        SBigFromUnsigned(b, 256);
+
+        SBigShr(a, b, 7);
+
+        a->Primary().Trim();
+
+        CHECK(a->Primary().Count() == 1);
+        CHECK(a->Primary()[0] == 2);
+    }
+}
+
+TEST_CASE("SBigSquare internal", "[big]") {
+    BigDataTest a, b;
+
+    SECTION("squares 0xFFFFFFFF") {
+        SBigFromUnsigned(b, 0xFFFFFFFF);
+
+        SBigSquare(a, b);
+
+        a->Primary().Trim();
+
+        CHECK(a->Primary().Count() == 2);
+        CHECK(a->Primary()[0] == 0x1);
+        CHECK(a->Primary()[1] == 0xFFFFFFFE);
+    }
+}
+
+TEST_CASE("SBigSub internal", "[big]") {
+    BigDataTest a, b, c;
+
+    SECTION("subtracts 1 from 2") {
+        SBigFromUnsigned(b, 2);
+        SBigFromUnsigned(c, 1);
+
+        SBigSub(a, b, c);
+
+        a->Primary().Trim();
+
+        CHECK(a->Primary().Count() == 1);
+        CHECK(a->Primary()[0] == 1);
+    }
+
+#ifdef NDEBUG
+    SECTION("subtracts 1 from 0") {
+        SBigFromUnsigned(b, 0);
+        SBigFromUnsigned(c, 1);
+
+        SBigSub(a, b, c);
+
+        CHECK(a->Primary().Count() == 1);
+        CHECK(a->Primary()[0] == 0xFFFFFFFF);
+    }
+#endif
+}
+
+TEST_CASE("SBigXor internal", "[big]") {
+    BigDataTest a, b, c;
+
+    SECTION("performs bitwise xor on small numbers") {
+        auto v = GENERATE(
+            std::make_pair(0UL, 0UL),
+            std::make_pair(0UL, 123UL),
+            std::make_pair(41689UL, 786740UL)
+        );
+
+        SBigFromUnsigned(b, v.first);
+        SBigFromUnsigned(c, v.second);
+        SBigXor(a, b, c);
+
+        CHECK(a->Primary().Count() == 1);
+        CHECK(a->Primary()[0] == (v.first ^ v.second));
+    }
+
+    SECTION("performs bitwise xor on large number") {
+        SBigFromStr(b, std::to_string(0xFF00FF00FF00FF00ULL).c_str());
+        SBigFromStr(c, std::to_string(0xFF00FF00FF00FULL).c_str());
+        SBigXor(a, b, c);
+
+        CHECK(a->Primary().Count() == 2);
+        CHECK(a->Primary()[0] == 0xF0F0F0F);
+        CHECK(a->Primary()[1] == 0xFF0F0F0F);
+    }
+
+    SECTION("performs bitwise xor on huge value") {
+        uint32_t data[] = { 0xF00DFEEDUL, 0xBA1DUL, 0xBEEBBEEBUL, 0x12345678UL, 0x9ABCDEFUL, 0xDEADCADUL, 0xD011AUL };
+
+        SBigFromBinary(b, data, sizeof(data));
+        SBigFromUnsigned(c, 0x1111111FUL);
+        SBigXor(a, b, c);
+
+        CHECK(a->Primary().Count() == 7);
+        CHECK(a->Primary()[0] == 0xE11CEFF2);
+        CHECK(a->Primary()[1] == data[1]);
+        CHECK(a->Primary()[2] == data[2]);
+        CHECK(a->Primary()[3] == data[3]);
+        CHECK(a->Primary()[4] == data[4]);
+        CHECK(a->Primary()[5] == data[5]);
+        CHECK(a->Primary()[6] == data[6]);
+    }
+}