Experimental optimized Delphi TDateTime functions
Aproximate speed improvements, release-mode optimized compilation:
32-bit x86 CPU (13th gen Intel), Windows 11:
| Function | RAD 13.0 Florence | Lazarus / FreePascal |
|---|---|---|
| YearOf | 41% faster | 35% faster |
| MonthOf | 28% faster | 0% * |
| DayOf | 28% faster | 0% * |
| DayOfTheYear | 52% faster | 46% faster |
- Lazarus RTL DateUtils functions are very fast, different algorithm
64-bit CPU, Windows:
| Function | RAD 13.0 Florence | Lazarus / FreePascal |
|---|---|---|
| YearOf | 82% faster | (slower, FPC 62% faster) |
| MonthOf | 69% faster | (slower, FPC 200% faster) |
| DayOf | 69% faster | (slower, FPC 200% faster) |
| DayOfTheYear | 80% faster | (similar speed) |
- Lazarus 64bit compiler gives faster execution