Restoring authorship annotation for Vlad Yaroslavlev <vladon@vladon.com>. Commit 1 of 2.

1 files changed, 411 insertions, 411 deletions

diff --git a/library/cpp/int128/ut/i128_division_ut.cpp b/library/cpp/int128/ut/i128_division_ut.cpp
index 46b0ca27f5..b58731dd7e 100644
--- a/library/cpp/int128/ut/i128_division_ut.cpp
+++ b/library/cpp/int128/ut/i128_division_ut.cpp
@@ -1,413 +1,413 @@
 #include <library/cpp/testing/unittest/registar.h>
-
+ 
 #include <library/cpp/int128/int128.h>
-
-#include <util/generic/cast.h>
-
-Y_UNIT_TEST_SUITE(I128DivisionBy1Suite) {
-    Y_UNIT_TEST(I128Divide0By1) {
-        i128 dividend = 0;
-        i128 divider = 1;
-        i128 expectedQuotient = 0;
-        i128 expectedRemainder = 0;
-
-        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient);
-        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder);
-    }
-
-    Y_UNIT_TEST(I128Divide1By1) {
-        i128 dividend = 1;
-        i128 divider = 1;
-        i128 expectedQuotient = 1;
-        i128 expectedRemainder = 0;
-
-        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient);
-        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder);
-    }
-
-    Y_UNIT_TEST(I128Divide2By1) {
-        i128 dividend = 2;
-        i128 divider = 1;
-        i128 expectedQuotient = 2;
-        i128 expectedRemainder = 0;
-
-        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient);
-        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder);
-    }
-
-    Y_UNIT_TEST(I128Divide42By1) {
-        i128 dividend = 42;
-        i128 divider = 1;
-        i128 expectedQuotient = 42;
-        i128 expectedRemainder = 0;
-
-        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient);
-        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder);
-    }
-
-    Y_UNIT_TEST(I128DivideMaxUi64By1) {
-        i128 dividend = std::numeric_limits<ui64>::max();
-        i128 divider = 1;
-        i128 expectedQuotient = std::numeric_limits<ui64>::max();
-        i128 expectedRemainder = 0;
-
-        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient);
-        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder);
-    }
-
-    Y_UNIT_TEST(I128DivideMaxUi64Plus1By1) {
-        i128 dividend = i128{std::numeric_limits<ui64>::max()} + i128{1};
-        i128 divider = 1;
-        i128 expectedQuotient = i128{std::numeric_limits<ui64>::max()} + i128{1};
-        i128 expectedRemainder = 0;
-
-        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient);
-        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder);
-    }
-
-    Y_UNIT_TEST(I128DivideMaxUi64Plus42By1) {
-        i128 dividend = i128{std::numeric_limits<ui64>::max()} + i128{42};
-        i128 divider = 1;
-        i128 expectedQuotient = i128{std::numeric_limits<ui64>::max()} + i128{42};
-        i128 expectedRemainder = 0;
-
-        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient);
-        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder);
-    }
-
-    Y_UNIT_TEST(I128DivideMaxI128By1) {
-        i128 dividend = std::numeric_limits<i128>::max();
-        i128 divider = 1;
-        i128 expectedQuotient = std::numeric_limits<i128>::max();
-        i128 expectedRemainder = 0;
-
-        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient);
-        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder);
-    }
-
-    Y_UNIT_TEST(I128DivideMaxI128Minus1By1) {
-        i128 dividend = std::numeric_limits<i128>::max() - 1;
-        i128 divider = 1;
-        i128 expectedQuotient = std::numeric_limits<i128>::max() - 1;
-        i128 expectedRemainder = 0;
-
-        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient);
-        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder);
-    }
-}
-
-Y_UNIT_TEST_SUITE(I128DivisionByEqualSuite) {
-    Y_UNIT_TEST(I128Divide1ByEqual) {
-        i128 dividend = 1;
-        i128 divider = dividend;
-        i128 expectedQuotient = 1;
-        i128 expectedRemainder = 0;
-
-        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient);
-        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder);
-    }
-
-    Y_UNIT_TEST(I128Divide2ByEqual) {
-        i128 dividend = 2;
-        i128 divider = dividend;
-        i128 expectedQuotient = 1;
-        i128 expectedRemainder = 0;
-
-        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient);
-        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder);
-    }
-
-    Y_UNIT_TEST(I128Divide42ByEqual) {
-        i128 dividend = 42;
-        i128 divider = dividend;
-        i128 expectedQuotient = 1;
-        i128 expectedRemainder = 0;
-
-        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient);
-        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder);
-    }
-
-    Y_UNIT_TEST(I128DivideMaxUi64ByEqual) {
-        i128 dividend = std::numeric_limits<ui64>::max();
-        i128 divider = dividend;
-        i128 expectedQuotient = 1;
-        i128 expectedRemainder = 0;
-
-        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient);
-        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder);
-    }
-
-    Y_UNIT_TEST(I128DivideMaxUi64Plus1ByEqual) {
-        i128 dividend = i128{std::numeric_limits<ui64>::max()} + i128{1};
-        i128 divider = dividend;
-        i128 expectedQuotient = 1;
-        i128 expectedRemainder = 0;
-
-        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient);
-        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder);
-    }
-
-    Y_UNIT_TEST(I128DivideMaxUi64Plus42ByEqual) {
-        i128 dividend = i128{std::numeric_limits<ui64>::max()} + i128{42};
-        i128 divider = dividend;
-        i128 expectedQuotient = 1;
-        i128 expectedRemainder = 0;
-
-        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient);
-        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder);
-    }
-
-    Y_UNIT_TEST(I128DivideMaxI128ByEqual) {
-        i128 dividend = std::numeric_limits<i128>::max();
-        i128 divider = dividend;
-        i128 expectedQuotient = 1;
-        i128 expectedRemainder = 0;
-
-        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient);
-        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder);
-    }
-
-    Y_UNIT_TEST(I128DivideMaxI128Minus1ByEqual) {
-        i128 dividend = std::numeric_limits<i128>::max() - 1;
-        i128 divider = dividend;
-        i128 expectedQuotient = 1;
-        i128 expectedRemainder = 0;
-
-        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient);
-        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder);
-    }
-}
-
-Y_UNIT_TEST_SUITE(I128DivisionLessByHigherSuite) {
-    Y_UNIT_TEST(I128Divide42By84) {
-        i128 dividend = 42;
-        i128 divider = 84;
-        i128 expectedQuotient = 0;
-        i128 expectedRemainder = 42;
-
-        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient);
-        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder);
-    }
-
-    Y_UNIT_TEST(I128Divide42ByMaxUi64) {
-        i128 dividend = 42;
-        i128 divider = std::numeric_limits<ui64>::max();
-        i128 expectedQuotient = 0;
-        i128 expectedRemainder = 42;
-
-        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient);
-        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder);
-    }
-
-    Y_UNIT_TEST(I128Divide42ByMaxUi64Plus1) {
-        i128 dividend = 42;
-        i128 divider = i128{std::numeric_limits<ui64>::max()} + i128{1};
-        i128 expectedQuotient = 0;
-        i128 expectedRemainder = 42;
-
-        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient);
-        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder);
-    }
-
-    Y_UNIT_TEST(I128DivideMaxUi64ByMaxUi64Plus1) {
-        i128 dividend = i128{std::numeric_limits<ui64>::max()};
-        i128 divider = i128{std::numeric_limits<ui64>::max()} + i128{1};
-        i128 expectedQuotient = 0;
-        i128 expectedRemainder = i128{std::numeric_limits<ui64>::max()};
-
-        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient);
-        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder);
-    }
-}
-
-Y_UNIT_TEST_SUITE(I128DivisionWithDifferentSigns) {
-    Y_UNIT_TEST(DivisionPositiveByNegative) {
-        i128 dividend = i128{100};
-        i128 divider = i128{-33};
-        i128 expectedQuotient = -3;
-        i128 expectedRemainder = 1;
-        i128 quotient = dividend / divider;
-        i128 remainder = dividend % divider;
-
-        UNIT_ASSERT_EQUAL(quotient, expectedQuotient);
-        UNIT_ASSERT_EQUAL(remainder, expectedRemainder);
-    }
-
-    Y_UNIT_TEST(DivisionNegativeByPositive) {
-        i128 dividend = i128{-100};
-        i128 divider = i128{33};
-        i128 expectedQuotient = -3;
-        i128 expectedRemainder = -1;
-        i128 quotient = dividend / divider;
-        i128 remainder = dividend % divider;
-
-        UNIT_ASSERT_EQUAL(quotient, expectedQuotient);
-        UNIT_ASSERT_EQUAL(remainder, expectedRemainder);
-    }
-
-    Y_UNIT_TEST(DivisionNegativeByNegative) {
-        i128 dividend = i128{-100};
-        i128 divider = i128{-33};
-        i128 expectedQuotient = 3;
-        i128 expectedRemainder = -1;
-        i128 quotient = dividend / divider;
-        i128 remainder = dividend % divider;
-
-        UNIT_ASSERT_EQUAL(quotient, expectedQuotient);
-        UNIT_ASSERT_EQUAL(remainder, expectedRemainder);
-    }
-}
-
-Y_UNIT_TEST_SUITE(i128DivisionBigByBigSuite) {
-    Y_UNIT_TEST(i128DivideBigByBig1) {
-        i128 dividend = {64, 0};
-        i128 divider = {1, 0};
-        i128 expectedQuotient = 64;
-        i128 expectedRemainder = 0;
-
-        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient);
-        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder);
-    }
-
-    Y_UNIT_TEST(i128DivideBigByBig1_PosByNeg) {
-        i128 dividend = i128{64, 0};
-        i128 divider = -i128{1, 0};
-        i128 expectedQuotient = -i128{64};
-        i128 expectedRemainder = 0;
-
-        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient);
-        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder);
-    }
-
-    Y_UNIT_TEST(i128DivideBigByBig1_NegByPos) {
-        i128 dividend = -i128{64, 0};
-        i128 divider = i128{1, 0};
-        i128 expectedQuotient = -i128{64};
-        i128 expectedRemainder = 0;
-
-        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient);
-        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder);
-    }
-
-    Y_UNIT_TEST(i128DivideBigByBig1_NegByNeg) {
-        i128 dividend = -i128{64, 0};
-        i128 divider = -i128{1, 0};
-        i128 expectedQuotient = i128{64};
-        i128 expectedRemainder = 0;
-
-        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient);
-        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder);
-    }
-
-    Y_UNIT_TEST(i128DivideBigByBig2) {
-        i128 dividend = {64, 0};
-        i128 divider = {12, 5};
-        i128 expectedQuotient = 5;
-        i128 expectedRemainder = i128{3, 18446744073709551591ull}; // plz don't ask
-
-        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient);
-        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder);
-    }
-
-    Y_UNIT_TEST(i128DivideBigByBig2_PosByNeg) {
-        i128 dividend = i128{64, 0};
-        i128 divider = -i128{12, 5};
-        i128 expectedQuotient = -5;
-        i128 expectedRemainder = i128{3, 18446744073709551591ull};
-
-        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient);
-        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder);
-    }
-
-    Y_UNIT_TEST(i128DivideBigByBig2_NegByPos) {
-        i128 dividend = -i128{64, 0};
-        i128 divider = i128{12, 5};
-        i128 expectedQuotient = -5;
-        i128 expectedRemainder = -i128{3, 18446744073709551591ull};
-
-        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient);
-        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder);
-    }
-
-    Y_UNIT_TEST(i128DivideBigByBig2_NegByNeg) {
-        i128 dividend = -i128{64, 0};
-        i128 divider = -i128{12, 5};
-        i128 expectedQuotient = 5;
-        i128 expectedRemainder = -i128{3, 18446744073709551591ull};
-
-        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient);
-        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder);
-    }
-
-}
-
-Y_UNIT_TEST_SUITE(i128DivisionAlgo) {
-    Y_UNIT_TEST(ii128DivideAlgoCheck_PosByPos) {
-        /*
-            49672666804009505000000 / 10000000 == 4967266680400950
-            49672666804009505000000 % 10000000 == 5000000
-        */
-        i128 dividend = {2692ull, 14031757583392049728ull};
-        i64 divider = 10000000;
-        i128 expectedQuotient = {0, 4967266680400950ull};
-        i128 expectedRemainder = {0, 5000000ull};
-
-        i128 quotient = dividend / divider;
-        i128 reminder = dividend % divider;
-
-        UNIT_ASSERT_EQUAL(quotient, expectedQuotient);
-        UNIT_ASSERT_EQUAL(reminder, expectedRemainder);
-    }
-
-    Y_UNIT_TEST(ii128DivideAlgoCheck_PosByNeg) {
-        /*
-            49672666804009505000000 / -10000000 == -4967266680400950
-            49672666804009505000000 % -10000000 == 5000000
-        */
-        i128 dividend = {2692ull, 14031757583392049728ull};
-        i64 divider = -10000000;
-        i128 expectedQuotient = -i128{0, 4967266680400950ull};
-        i128 expectedRemainder = {0, 5000000ull};
-
-        i128 quotient = dividend / divider;
-        i128 reminder = dividend % divider;
-
-        UNIT_ASSERT_EQUAL(quotient, expectedQuotient);
-        UNIT_ASSERT_EQUAL(reminder, expectedRemainder);
-    }
-
-    Y_UNIT_TEST(ii128DivideAlgoCheck_NegByPos) {
-        /*
-            -49672666804009505000000 / 10000000 == -4967266680400950
-            -49672666804009505000000 % 10000000 == -5000000
-        */
-        i128 dividend = -i128{2692ull, 14031757583392049728ull};
-        i64 divider = 10000000;
-        i128 expectedQuotient = -i128{0, 4967266680400950ull};
-        i128 expectedRemainder = -i128{0, 5000000ull};
-
-        i128 quotient = dividend / divider;
-        i128 reminder = dividend % divider;
-
-        UNIT_ASSERT_EQUAL(quotient, expectedQuotient);
-        UNIT_ASSERT_EQUAL(reminder, expectedRemainder);
-    }
-
-    Y_UNIT_TEST(ii128DivideAlgoCheck_NegByNeg) {
-        /*
-            -49672666804009505000000 / -10000000 == 4967266680400950
-            -49672666804009505000000 % -10000000 == -5000000
-        */
-        i128 dividend = -i128{2692ull, 14031757583392049728ull};
-        i64 divider = -10000000;
-        i128 expectedQuotient = {0, 4967266680400950ull};
-        i128 expectedRemainder = -i128{0, 5000000ull};
-
-        i128 quotient = dividend / divider;
-        i128 reminder = dividend % divider;
-
-        UNIT_ASSERT_EQUAL(quotient, expectedQuotient);
-        UNIT_ASSERT_EQUAL(reminder, expectedRemainder);
-    }
-
-}
+ 
+#include <util/generic/cast.h> 
+ 
+Y_UNIT_TEST_SUITE(I128DivisionBy1Suite) { 
+    Y_UNIT_TEST(I128Divide0By1) { 
+        i128 dividend = 0; 
+        i128 divider = 1; 
+        i128 expectedQuotient = 0; 
+        i128 expectedRemainder = 0; 
+ 
+        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder); 
+    } 
+ 
+    Y_UNIT_TEST(I128Divide1By1) { 
+        i128 dividend = 1; 
+        i128 divider = 1; 
+        i128 expectedQuotient = 1; 
+        i128 expectedRemainder = 0; 
+ 
+        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder); 
+    } 
+ 
+    Y_UNIT_TEST(I128Divide2By1) { 
+        i128 dividend = 2; 
+        i128 divider = 1; 
+        i128 expectedQuotient = 2; 
+        i128 expectedRemainder = 0; 
+ 
+        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder); 
+    } 
+ 
+    Y_UNIT_TEST(I128Divide42By1) { 
+        i128 dividend = 42; 
+        i128 divider = 1; 
+        i128 expectedQuotient = 42; 
+        i128 expectedRemainder = 0; 
+ 
+        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder); 
+    } 
+ 
+    Y_UNIT_TEST(I128DivideMaxUi64By1) { 
+        i128 dividend = std::numeric_limits<ui64>::max(); 
+        i128 divider = 1; 
+        i128 expectedQuotient = std::numeric_limits<ui64>::max(); 
+        i128 expectedRemainder = 0; 
+ 
+        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder); 
+    } 
+ 
+    Y_UNIT_TEST(I128DivideMaxUi64Plus1By1) { 
+        i128 dividend = i128{std::numeric_limits<ui64>::max()} + i128{1}; 
+        i128 divider = 1; 
+        i128 expectedQuotient = i128{std::numeric_limits<ui64>::max()} + i128{1}; 
+        i128 expectedRemainder = 0; 
+ 
+        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder); 
+    } 
+ 
+    Y_UNIT_TEST(I128DivideMaxUi64Plus42By1) { 
+        i128 dividend = i128{std::numeric_limits<ui64>::max()} + i128{42}; 
+        i128 divider = 1; 
+        i128 expectedQuotient = i128{std::numeric_limits<ui64>::max()} + i128{42}; 
+        i128 expectedRemainder = 0; 
+ 
+        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder); 
+    } 
+ 
+    Y_UNIT_TEST(I128DivideMaxI128By1) { 
+        i128 dividend = std::numeric_limits<i128>::max(); 
+        i128 divider = 1; 
+        i128 expectedQuotient = std::numeric_limits<i128>::max(); 
+        i128 expectedRemainder = 0; 
+ 
+        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder); 
+    } 
+ 
+    Y_UNIT_TEST(I128DivideMaxI128Minus1By1) { 
+        i128 dividend = std::numeric_limits<i128>::max() - 1; 
+        i128 divider = 1; 
+        i128 expectedQuotient = std::numeric_limits<i128>::max() - 1; 
+        i128 expectedRemainder = 0; 
+ 
+        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder); 
+    } 
+} 
+ 
+Y_UNIT_TEST_SUITE(I128DivisionByEqualSuite) { 
+    Y_UNIT_TEST(I128Divide1ByEqual) { 
+        i128 dividend = 1; 
+        i128 divider = dividend; 
+        i128 expectedQuotient = 1; 
+        i128 expectedRemainder = 0; 
+ 
+        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder); 
+    } 
+ 
+    Y_UNIT_TEST(I128Divide2ByEqual) { 
+        i128 dividend = 2; 
+        i128 divider = dividend; 
+        i128 expectedQuotient = 1; 
+        i128 expectedRemainder = 0; 
+ 
+        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder); 
+    } 
+ 
+    Y_UNIT_TEST(I128Divide42ByEqual) { 
+        i128 dividend = 42; 
+        i128 divider = dividend; 
+        i128 expectedQuotient = 1; 
+        i128 expectedRemainder = 0; 
+ 
+        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder); 
+    } 
+ 
+    Y_UNIT_TEST(I128DivideMaxUi64ByEqual) { 
+        i128 dividend = std::numeric_limits<ui64>::max(); 
+        i128 divider = dividend; 
+        i128 expectedQuotient = 1; 
+        i128 expectedRemainder = 0; 
+ 
+        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder); 
+    } 
+ 
+    Y_UNIT_TEST(I128DivideMaxUi64Plus1ByEqual) { 
+        i128 dividend = i128{std::numeric_limits<ui64>::max()} + i128{1}; 
+        i128 divider = dividend; 
+        i128 expectedQuotient = 1; 
+        i128 expectedRemainder = 0; 
+ 
+        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder); 
+    } 
+ 
+    Y_UNIT_TEST(I128DivideMaxUi64Plus42ByEqual) { 
+        i128 dividend = i128{std::numeric_limits<ui64>::max()} + i128{42}; 
+        i128 divider = dividend; 
+        i128 expectedQuotient = 1; 
+        i128 expectedRemainder = 0; 
+ 
+        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder); 
+    } 
+ 
+    Y_UNIT_TEST(I128DivideMaxI128ByEqual) { 
+        i128 dividend = std::numeric_limits<i128>::max(); 
+        i128 divider = dividend; 
+        i128 expectedQuotient = 1; 
+        i128 expectedRemainder = 0; 
+ 
+        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder); 
+    } 
+ 
+    Y_UNIT_TEST(I128DivideMaxI128Minus1ByEqual) { 
+        i128 dividend = std::numeric_limits<i128>::max() - 1; 
+        i128 divider = dividend; 
+        i128 expectedQuotient = 1; 
+        i128 expectedRemainder = 0; 
+ 
+        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder); 
+    } 
+} 
+ 
+Y_UNIT_TEST_SUITE(I128DivisionLessByHigherSuite) { 
+    Y_UNIT_TEST(I128Divide42By84) { 
+        i128 dividend = 42; 
+        i128 divider = 84; 
+        i128 expectedQuotient = 0; 
+        i128 expectedRemainder = 42; 
+ 
+        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder); 
+    } 
+ 
+    Y_UNIT_TEST(I128Divide42ByMaxUi64) { 
+        i128 dividend = 42; 
+        i128 divider = std::numeric_limits<ui64>::max(); 
+        i128 expectedQuotient = 0; 
+        i128 expectedRemainder = 42; 
+ 
+        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder); 
+    } 
+ 
+    Y_UNIT_TEST(I128Divide42ByMaxUi64Plus1) { 
+        i128 dividend = 42; 
+        i128 divider = i128{std::numeric_limits<ui64>::max()} + i128{1}; 
+        i128 expectedQuotient = 0; 
+        i128 expectedRemainder = 42; 
+ 
+        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder); 
+    } 
+ 
+    Y_UNIT_TEST(I128DivideMaxUi64ByMaxUi64Plus1) { 
+        i128 dividend = i128{std::numeric_limits<ui64>::max()}; 
+        i128 divider = i128{std::numeric_limits<ui64>::max()} + i128{1}; 
+        i128 expectedQuotient = 0; 
+        i128 expectedRemainder = i128{std::numeric_limits<ui64>::max()}; 
+ 
+        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder); 
+    } 
+} 
+ 
+Y_UNIT_TEST_SUITE(I128DivisionWithDifferentSigns) { 
+    Y_UNIT_TEST(DivisionPositiveByNegative) { 
+        i128 dividend = i128{100}; 
+        i128 divider = i128{-33}; 
+        i128 expectedQuotient = -3; 
+        i128 expectedRemainder = 1; 
+        i128 quotient = dividend / divider; 
+        i128 remainder = dividend % divider; 
+ 
+        UNIT_ASSERT_EQUAL(quotient, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(remainder, expectedRemainder); 
+    } 
+ 
+    Y_UNIT_TEST(DivisionNegativeByPositive) { 
+        i128 dividend = i128{-100}; 
+        i128 divider = i128{33}; 
+        i128 expectedQuotient = -3; 
+        i128 expectedRemainder = -1; 
+        i128 quotient = dividend / divider; 
+        i128 remainder = dividend % divider; 
+ 
+        UNIT_ASSERT_EQUAL(quotient, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(remainder, expectedRemainder); 
+    } 
+ 
+    Y_UNIT_TEST(DivisionNegativeByNegative) { 
+        i128 dividend = i128{-100}; 
+        i128 divider = i128{-33}; 
+        i128 expectedQuotient = 3; 
+        i128 expectedRemainder = -1; 
+        i128 quotient = dividend / divider; 
+        i128 remainder = dividend % divider; 
+ 
+        UNIT_ASSERT_EQUAL(quotient, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(remainder, expectedRemainder); 
+    } 
+} 
+ 
+Y_UNIT_TEST_SUITE(i128DivisionBigByBigSuite) { 
+    Y_UNIT_TEST(i128DivideBigByBig1) { 
+        i128 dividend = {64, 0}; 
+        i128 divider = {1, 0}; 
+        i128 expectedQuotient = 64; 
+        i128 expectedRemainder = 0; 
+ 
+        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder); 
+    } 
+ 
+    Y_UNIT_TEST(i128DivideBigByBig1_PosByNeg) { 
+        i128 dividend = i128{64, 0}; 
+        i128 divider = -i128{1, 0}; 
+        i128 expectedQuotient = -i128{64}; 
+        i128 expectedRemainder = 0; 
+ 
+        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder); 
+    } 
+ 
+    Y_UNIT_TEST(i128DivideBigByBig1_NegByPos) { 
+        i128 dividend = -i128{64, 0}; 
+        i128 divider = i128{1, 0}; 
+        i128 expectedQuotient = -i128{64}; 
+        i128 expectedRemainder = 0; 
+ 
+        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder); 
+    } 
+ 
+    Y_UNIT_TEST(i128DivideBigByBig1_NegByNeg) { 
+        i128 dividend = -i128{64, 0}; 
+        i128 divider = -i128{1, 0}; 
+        i128 expectedQuotient = i128{64}; 
+        i128 expectedRemainder = 0; 
+ 
+        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder); 
+    } 
+ 
+    Y_UNIT_TEST(i128DivideBigByBig2) { 
+        i128 dividend = {64, 0}; 
+        i128 divider = {12, 5}; 
+        i128 expectedQuotient = 5; 
+        i128 expectedRemainder = i128{3, 18446744073709551591ull}; // plz don't ask 
+ 
+        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder); 
+    } 
+ 
+    Y_UNIT_TEST(i128DivideBigByBig2_PosByNeg) { 
+        i128 dividend = i128{64, 0}; 
+        i128 divider = -i128{12, 5}; 
+        i128 expectedQuotient = -5; 
+        i128 expectedRemainder = i128{3, 18446744073709551591ull}; 
+ 
+        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder); 
+    } 
+ 
+    Y_UNIT_TEST(i128DivideBigByBig2_NegByPos) { 
+        i128 dividend = -i128{64, 0}; 
+        i128 divider = i128{12, 5}; 
+        i128 expectedQuotient = -5; 
+        i128 expectedRemainder = -i128{3, 18446744073709551591ull}; 
+ 
+        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder); 
+    } 
+ 
+    Y_UNIT_TEST(i128DivideBigByBig2_NegByNeg) { 
+        i128 dividend = -i128{64, 0}; 
+        i128 divider = -i128{12, 5}; 
+        i128 expectedQuotient = 5; 
+        i128 expectedRemainder = -i128{3, 18446744073709551591ull}; 
+ 
+        UNIT_ASSERT_EQUAL(dividend / divider, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(dividend % divider, expectedRemainder); 
+    } 
+ 
+} 
+ 
+Y_UNIT_TEST_SUITE(i128DivisionAlgo) { 
+    Y_UNIT_TEST(ii128DivideAlgoCheck_PosByPos) { 
+        /* 
+            49672666804009505000000 / 10000000 == 4967266680400950 
+            49672666804009505000000 % 10000000 == 5000000 
+        */ 
+        i128 dividend = {2692ull, 14031757583392049728ull}; 
+        i64 divider = 10000000; 
+        i128 expectedQuotient = {0, 4967266680400950ull}; 
+        i128 expectedRemainder = {0, 5000000ull}; 
+ 
+        i128 quotient = dividend / divider; 
+        i128 reminder = dividend % divider; 
+ 
+        UNIT_ASSERT_EQUAL(quotient, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(reminder, expectedRemainder); 
+    } 
+ 
+    Y_UNIT_TEST(ii128DivideAlgoCheck_PosByNeg) { 
+        /* 
+            49672666804009505000000 / -10000000 == -4967266680400950 
+            49672666804009505000000 % -10000000 == 5000000 
+        */ 
+        i128 dividend = {2692ull, 14031757583392049728ull}; 
+        i64 divider = -10000000; 
+        i128 expectedQuotient = -i128{0, 4967266680400950ull}; 
+        i128 expectedRemainder = {0, 5000000ull}; 
+ 
+        i128 quotient = dividend / divider; 
+        i128 reminder = dividend % divider; 
+ 
+        UNIT_ASSERT_EQUAL(quotient, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(reminder, expectedRemainder); 
+    } 
+ 
+    Y_UNIT_TEST(ii128DivideAlgoCheck_NegByPos) { 
+        /* 
+            -49672666804009505000000 / 10000000 == -4967266680400950 
+            -49672666804009505000000 % 10000000 == -5000000 
+        */ 
+        i128 dividend = -i128{2692ull, 14031757583392049728ull}; 
+        i64 divider = 10000000; 
+        i128 expectedQuotient = -i128{0, 4967266680400950ull}; 
+        i128 expectedRemainder = -i128{0, 5000000ull}; 
+ 
+        i128 quotient = dividend / divider; 
+        i128 reminder = dividend % divider; 
+ 
+        UNIT_ASSERT_EQUAL(quotient, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(reminder, expectedRemainder); 
+    } 
+ 
+    Y_UNIT_TEST(ii128DivideAlgoCheck_NegByNeg) { 
+        /* 
+            -49672666804009505000000 / -10000000 == 4967266680400950 
+            -49672666804009505000000 % -10000000 == -5000000 
+        */ 
+        i128 dividend = -i128{2692ull, 14031757583392049728ull}; 
+        i64 divider = -10000000; 
+        i128 expectedQuotient = {0, 4967266680400950ull}; 
+        i128 expectedRemainder = -i128{0, 5000000ull}; 
+ 
+        i128 quotient = dividend / divider; 
+        i128 reminder = dividend % divider; 
+ 
+        UNIT_ASSERT_EQUAL(quotient, expectedQuotient); 
+        UNIT_ASSERT_EQUAL(reminder, expectedRemainder); 
+    } 
+ 
+}