Improve 'r1 = ' comments

SergeiPavlov · Aug 3, 2022 · 39a504a · 39a504a
1 parent de9a57a
commit 39a504a
Showing 1 changed file with 4 additions and 4 deletions.
diff --git a/src/libraries/System.Private.CoreLib/src/System/DateTime.cs b/src/libraries/System.Private.CoreLib/src/System/DateTime.cs
@@ -1357,7 +1357,7 @@ public DateTime Date
  internal void GetDate(out int year, out int month, out int day)
  {
  // y100 = number of whole 100-year periods since 3/1/0000
- // r1 = (day number within 100-year period) * 4
+ // r1 = (day number within 100-year period) * 4 + 3
  (uint y100, uint r1) = Math.DivRem(((uint)(UTicks / TicksPer6Hours) | 3U) + 1224, DaysPer400Years);
  ulong u2 = (ulong)Math.BigMul(2939745, (int)r1 | 3);
  ushort daySinceMarch1 = (ushort)((uint)u2 / 11758980);
@@ -1419,7 +1419,7 @@ public int Day
  {
  get
  {
- // r1 = (day number within 100-year period) * 4
+ // r1 = (day number within 100-year period) * 4 + 3
  uint r1 = (((uint)(UTicks / TicksPer6Hours) | 3U) + 1224) % DaysPer400Years;
  ulong u2 = (ulong)Math.BigMul(2939745, (int)r1 | 3);
  ushort daySinceMarch1 = (ushort)((uint)u2 / 11758980);
@@ -1496,7 +1496,7 @@ public int Month
  {
  get
  {
- // r1 = (day number within 100-year period) * 4
+ // r1 = (day number within 100-year period) * 4 + 3
  uint r1 = (((uint)(UTicks / TicksPer6Hours) | 3U) + 1224) % DaysPer400Years;
  ulong u2 = (ulong)Math.BigMul(2939745, (int)r1 | 3);
  ushort daySinceMarch1 = (ushort)((uint)u2 / 11758980);
@@ -1556,7 +1556,7 @@ public int Year
  get
  {
  // y100 = number of whole 100-year periods since 1/1/0001
- // r1 = (day number within 100-year period) * 4
+ // r1 = (day number within 100-year period) * 4 + 3
  (uint y100, uint r1) = Math.DivRem(((uint)(UTicks / TicksPer6Hours) | 3U), DaysPer400Years);
  return 100 * (int)y100
  + ((int)r1 | 3) / DaysPer4Years