54 lines
1 KiB
Modula-2
54 lines
1 KiB
Modula-2
IMPLEMENTATION MODULE RealInOut;
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IMPORT InOut;
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IMPORT RealConversions;
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IMPORT Traps;
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FROM SYSTEM IMPORT WORD;
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CONST MAXNDIG = 32;
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MAXWIDTH = MAXNDIG+7;
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TYPE RBUF = ARRAY [0..MAXWIDTH+1] OF CHAR;
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PROCEDURE WriteReal(arg: REAL; ndigits: CARDINAL);
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VAR buf : RBUF;
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ok : BOOLEAN;
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BEGIN
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IF ndigits > MAXWIDTH THEN ndigits := MAXWIDTH; END;
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IF ndigits < 10 THEN ndigits := 10; END;
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RealConversions.RealToString(arg, ndigits, -(ndigits - 7), buf, ok);
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InOut.WriteString(buf);
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END WriteReal;
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PROCEDURE ReadReal(VAR x: REAL);
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VAR Buf: ARRAY[0..512] OF CHAR;
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ok: BOOLEAN;
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BEGIN
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InOut.ReadString(Buf);
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RealConversions.StringToReal(Buf, x, ok);
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IF NOT ok THEN
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Traps.Message("real expected");
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HALT;
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END;
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Done := TRUE;
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END ReadReal;
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PROCEDURE wroct(x: ARRAY OF WORD);
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VAR i: CARDINAL;
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BEGIN
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FOR i := 0 TO HIGH(x) DO
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InOut.WriteOct(CARDINAL(x[i]), 0);
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InOut.WriteString(" ");
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END;
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END wroct;
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PROCEDURE WriteRealOct(x: REAL);
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BEGIN
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wroct(x);
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END WriteRealOct;
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BEGIN
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Done := FALSE;
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END RealInOut.
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