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Search for a character in a memory range.
Source position: systemh.inc line 789
function IndexChar( |
const buf; |
len: SizeInt; |
b: Char |
):SizeInt; |
IndexChar searches the memory at buf for maximally len positions for the character b and returns it's position if it found one. If b is not found then -1 is returned. The position is zero-based. The IndexChar0 variant stops looking if a null character is found, and returns -1 in that case.
Buf and Len are not checked to see if they are valid values.
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Search for a byte in a memory range. |
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Search for a DWord value in a memory range. |
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Search for a WORD value in a memory range. |
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compare 2 memory buffers character per character |
Program Example108; { Program to demonstrate the IndexChar function. } Const ArraySize = 1000; MaxValue = 26; Var Buffer : Array[1..ArraySize] of Char; I,J : longint; K : Char; begin Randomize; For I:=1 To ArraySize do Buffer[I]:=chr(Ord('A')+Random(MaxValue)); For I:=1 to 10 do begin K:=chr(Ord('A')+Random(MaxValue)); J:=IndexChar(Buffer,ArraySize,K); if J=-1 then Writeln('Value ',K,' was not found in buffer.') else Writeln('Found ',K,' at position ',J,' in buffer'); end; end.