39 lines
1.1 KiB
Modula-2
39 lines
1.1 KiB
Modula-2
(*$Foreign *)
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DEFINITION MODULE EM;
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(*
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Module: Interface to some EM instructions and data
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Author: Ceriel J.H. Jacobs
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Version: $Header$
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*)
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FROM SYSTEM IMPORT ADDRESS;
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TYPE TrapHandler = PROCEDURE(INTEGER);
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PROCEDURE FIF(arg1, arg2: LONGREAL; VAR intres: LONGREAL) : LONGREAL;
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(* multiplies arg1 and arg2, and returns the integer part of the
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result in "intres" and the fraction part as the function result.
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*)
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PROCEDURE FEF(arg: LONGREAL; VAR exp: INTEGER) : LONGREAL;
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(* splits "arg" in mantissa and a base-2 exponent.
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The mantissa is returned, and the exponent is left in "exp".
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*)
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PROCEDURE TRP(trapno: INTEGER);
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(* Generate EM trap number "trapno" *)
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PROCEDURE SIG(t: TrapHandler): TrapHandler;
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(* install traphandler t; return previous handler *)
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PROCEDURE FILN(): ADDRESS;
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(* return current program file-name. This only works if file-name
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and line-number generation is not disabled during compilation
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*)
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PROCEDURE LINO(): INTEGER;
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(* return current program line-number. This only works if file-name
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and line-number generation is not disabled during compilation
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*)
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END EM.
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