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CheckMemModel.pim.mod
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CheckMemModel.pim.mod
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(*!m2pim*) (* Copyright (c) 2017 Modula-2 Software Foundation *)
MODULE CheckMemModel; (* PIM version *)
(* Prints the bit widths of types CARDINAL and LONGINT to the console *)
IMPORT Terminal;
(* ---------------------------------------------------------------------------
* bit width of type CARDINAL
* ------------------------------------------------------------------------ *)
CONST
MaxCardDivPow2Of8 = MAX(CARDINAL) DIV 256;
MaxCardDivPow2Of16 = MaxCardDivPow2Of8 DIV 256;
MaxCardDivPow2Of24 = MaxCardDivPow2Of16 DIV 256;
MaxCardDivPow2Of32 = MaxCardDivPow2Of24 DIV 256;
MaxCardDivPow2Of40 = MaxCardDivPow2Of32 DIV 256;
MaxCardDivPow2Of48 = MaxCardDivPow2Of40 DIV 256;
MaxCardDivPow2Of56 = MaxCardDivPow2Of48 DIV 256;
MaxCardDivPow2Of64 = MaxCardDivPow2Of56 DIV 256;
MaxCardDivPow2Of72 = MaxCardDivPow2Of64 DIV 256;
MaxCardDivPow2Of80 = MaxCardDivPow2Of72 DIV 256;
MaxCardDivPow2Of88 = MaxCardDivPow2Of80 DIV 256;
MaxCardDivPow2Of96 = MaxCardDivPow2Of88 DIV 256;
MaxCardDivPow2Of104 = MaxCardDivPow2Of96 DIV 256;
MaxCardDivPow2Of112 = MaxCardDivPow2Of104 DIV 256;
MaxCardDivPow2Of120 = MaxCardDivPow2Of112 DIV 256;
BW8 = (MAX(CARDINAL) <= 255);
BW16 = (MaxCardDivPow2Of8 > 0) AND (MaxCardDivPow2Of8 <= 255);
BW24 = (MaxCardDivPow2Of16 > 0) AND (MaxCardDivPow2Of16 <= 255);
BW32 = (MaxCardDivPow2Of24 > 0) AND (MaxCardDivPow2Of24 <= 255);
BW40 = (MaxCardDivPow2Of32 > 0) AND (MaxCardDivPow2Of32 <= 255);
BW48 = (MaxCardDivPow2Of40 > 0) AND (MaxCardDivPow2Of40 <= 255);
BW56 = (MaxCardDivPow2Of48 > 0) AND (MaxCardDivPow2Of48 <= 255);
BW64 = (MaxCardDivPow2Of56 > 0) AND (MaxCardDivPow2Of56 <= 255);
BW72 = (MaxCardDivPow2Of64 > 0) AND (MaxCardDivPow2Of64 <= 255);
BW80 = (MaxCardDivPow2Of72 > 0) AND (MaxCardDivPow2Of72 <= 255);
BW88 = (MaxCardDivPow2Of80 > 0) AND (MaxCardDivPow2Of80 <= 255);
BW96 = (MaxCardDivPow2Of88 > 0) AND (MaxCardDivPow2Of88 <= 255);
BW104 = (MaxCardDivPow2Of96 > 0) AND (MaxCardDivPow2Of96 <= 255);
BW112 = (MaxCardDivPow2Of104 > 0) AND (MaxCardDivPow2Of104 <= 255);
BW120 = (MaxCardDivPow2Of112 > 0) AND (MaxCardDivPow2Of112 <= 255);
BW128 = (MaxCardDivPow2Of120 > 0) AND (MaxCardDivPow2Of120 <= 255);
CardBitwidth =
8*ORD(BW8) + 16*ORD(BW16) + 24*ORD(BW24) + 32*ORD(BW32) +
40*ORD(BW40) + 48*ORD(BW48) + 56*ORD(BW56) + 64*ORD(BW64) +
72*ORD(BW72) + 80*ORD(BW80) + 88*ORD(BW88) + 96*ORD(BW96) +
104*ORD(BW104) + 112*ORD(BW112) + 120*ORD(BW120) + 128*ORD(BW128);
(* ---------------------------------------------------------------------------
* bit width of type LONGINT
* ------------------------------------------------------------------------ *)
CONST
MaxLongIntDivPow2Of8 = MAX(LONGINT) DIV 256;
MaxLongIntDivPow2Of16 = MaxLongIntDivPow2Of8 DIV 256;
MaxLongIntDivPow2Of24 = MaxLongIntDivPow2Of16 DIV 256;
MaxLongIntDivPow2Of32 = MaxLongIntDivPow2Of24 DIV 256;
MaxLongIntDivPow2Of40 = MaxLongIntDivPow2Of32 DIV 256;
MaxLongIntDivPow2Of48 = MaxLongIntDivPow2Of40 DIV 256;
MaxLongIntDivPow2Of56 = MaxLongIntDivPow2Of48 DIV 256;
MaxLongIntDivPow2Of64 = MaxLongIntDivPow2Of56 DIV 256;
MaxLongIntDivPow2Of72 = MaxLongIntDivPow2Of64 DIV 256;
MaxLongIntDivPow2Of80 = MaxLongIntDivPow2Of72 DIV 256;
MaxLongIntDivPow2Of88 = MaxLongIntDivPow2Of80 DIV 256;
MaxLongIntDivPow2Of96 = MaxLongIntDivPow2Of88 DIV 256;
MaxLongIntDivPow2Of104 = MaxLongIntDivPow2Of96 DIV 256;
MaxLongIntDivPow2Of112 = MaxLongIntDivPow2Of104 DIV 256;
MaxLongIntDivPow2Of120 = MaxLongIntDivPow2Of112 DIV 256;
LBW8 = (MAX(LONGINT) <= 127);
LBW16 = (MaxLongIntDivPow2Of8 > 0) AND (MaxLongIntDivPow2Of8 <= 127);
LBW24 = (MaxLongIntDivPow2Of16 > 0) AND (MaxLongIntDivPow2Of16 <= 127);
LBW32 = (MaxLongIntDivPow2Of24 > 0) AND (MaxLongIntDivPow2Of24 <= 127);
LBW40 = (MaxLongIntDivPow2Of32 > 0) AND (MaxLongIntDivPow2Of32 <= 127);
LBW48 = (MaxLongIntDivPow2Of40 > 0) AND (MaxLongIntDivPow2Of40 <= 127);
LBW56 = (MaxLongIntDivPow2Of48 > 0) AND (MaxLongIntDivPow2Of48 <= 127);
LBW64 = (MaxLongIntDivPow2Of56 > 0) AND (MaxLongIntDivPow2Of56 <= 127);
LBW72 = (MaxLongIntDivPow2Of64 > 0) AND (MaxLongIntDivPow2Of64 <= 127);
LBW80 = (MaxLongIntDivPow2Of72 > 0) AND (MaxLongIntDivPow2Of72 <= 127);
LBW88 = (MaxLongIntDivPow2Of80 > 0) AND (MaxLongIntDivPow2Of80 <= 127);
LBW96 = (MaxLongIntDivPow2Of88 > 0) AND (MaxLongIntDivPow2Of88 <= 127);
LBW104 = (MaxLongIntDivPow2Of96 > 0) AND (MaxLongIntDivPow2Of96 <= 127);
LBW112 = (MaxLongIntDivPow2Of104 > 0) AND (MaxLongIntDivPow2Of104 <= 127);
LBW120 = (MaxLongIntDivPow2Of112 > 0) AND (MaxLongIntDivPow2Of112 <= 127);
LBW128 = (MaxLongIntDivPow2Of120 > 0) AND (MaxLongIntDivPow2Of120 <= 127);
LongIntBitwidth =
8*ORD(LBW8) + 16*ORD(LBW16) + 24*ORD(LBW24) + 32*ORD(LBW32) +
40*ORD(LBW40) + 48*ORD(LBW48) + 56*ORD(LBW56) + 64*ORD(LBW64) +
72*ORD(LBW72) + 80*ORD(LBW80) + 88*ORD(LBW88) + 96*ORD(LBW96) +
104*ORD(LBW104) + 112*ORD(LBW112) + 120*ORD(LBW120) + 128*ORD(LBW128);
(* ---------------------------------------------------------------------------
* procedure WriteNumber -- write a cardinal value to the console
* ------------------------------------------------------------------------ *)
PROCEDURE WriteNumber ( value : CARDINAL );
VAR
weight, digit : CARDINAL;
BEGIN
(* find highest digit *)
weight := 1;
WHILE value DIV weight > 10 DO
weight := weight * 10
END; (* WHILE *)
(* print digits *)
WHILE weight > 0 DO
digit := value DIV weight;
Terminal.Write(CHR(digit + 48));
value := value MOD weight;
weight := weight DIV 10
END (* WHILE *)
END WriteNumber;
BEGIN (* CheckMemModel *)
Terminal.WriteString("CARDINAL bit width: ");
WriteNumber(CardBitwidth);
Terminal.WriteLn;
Terminal.WriteString("LONGINT bit width: ");
WriteNumber(LongIntBitwidth);
Terminal.WriteLn
END CheckMemModel.