This is the official Fastcode library.
The FastCode.Libraries-0.6.4.zip is a "0.6" version so use it at your own risk.
Version 0.6 includes AnsiStringReplace, CharPos, CompareMem, CompareStr, CompareText, FillChar, LowerCase, Pos, PosEx, StrIComp, StrToInt32, StrComp, StrCopy, StrLen, StrLen, UpperCase.
There are two ways to use it: (a) RTL patching, (b) Direct calling
To use RTL patching just include the "Fastcode" unit as the first in the uses clause of your delphi project. If you're using an alternative memory manager and/or FastMove the order should be like this:
Whenever the program is calling AnsiStringReplace, CompareMem, CompareStr, CompareText, FillChar, LowerCase, Pos, PosEx, StrComp, StrCopy, StrLen, StrLen and UpperCase it will automatically use the Fastcode functions.
When using direct calls there is no check that the function that is called can actually be executed by the current CPU ! If LowerCaseP4N is called on a 486 it is very possible that the program just crashes. To use the direct calling mode include the Fastcode unit as required. For example, if you want to call LowerCaseP4N include the unit "FastcodeLowerCase.pas"
This library version contains the following targets (in this example UpperCase)