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44 lines
1.0 KiB
ObjectPascal
44 lines
1.0 KiB
ObjectPascal
{ %skiptarget=android }
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{ %cpu=i386 }
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{ %OPT=-Cg- }
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{ Source provided for Free Pascal Bug Report 5015 }
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{ Submitted by "Zeljan Rikalo" on 2006-04-15 }
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{ e-mail: zeljko@holobit.net }
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program test;
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{$mode delphi}
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const
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BitMaskTable: Array[0..31] of LongWord =
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($00000001, $00000002, $00000004, $00000008,
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$00000010, $00000020, $00000040, $00000080,
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$00000100, $00000200, $00000400, $00000800,
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$00001000, $00002000, $00004000, $00008000,
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$00010000, $00020000, $00040000, $00080000,
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$00100000, $00200000, $00400000, $00800000,
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$01000000, $02000000, $04000000, $08000000,
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$10000000, $20000000, $40000000, $80000000);
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BitsPerByte = 8;
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BitsPerWord = 16;
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BitsPerLongWord = 32;
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BytesPerCardinal = Sizeof(Cardinal);
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BitsPerCardinal = BytesPerCardinal * 8;
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function SetBit(const Value, BitIndex: LongWord): LongWord;
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asm
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{$IFOPT R+}
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CMP BitIndex, BitsPerLongWord
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JAE @Fin
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{$ENDIF}
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OR EAX, DWORD PTR [BitIndex * 4 + BitMaskTable]
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@Fin:
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end;
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begin
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end.
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