(* Copyright (C) 1987 Jensen & Partners International *)
DEFINITION MODULE MATHLIB;

IMPORT SYSTEM;
IMPORT Lib;

PROCEDURE Sin (A : LONGREAL) : LONGREAL;
PROCEDURE Cos (A : LONGREAL) : LONGREAL;
PROCEDURE Tan (A : LONGREAL) : LONGREAL;
PROCEDURE SinH(A : LONGREAL) : LONGREAL;
PROCEDURE CosH(A : LONGREAL) : LONGREAL;
PROCEDURE TanH(A : LONGREAL) : LONGREAL;
PROCEDURE ASin(A : LONGREAL) : LONGREAL;
PROCEDURE ACos(A : LONGREAL) : LONGREAL;
PROCEDURE ATan(A : LONGREAL) : LONGREAL;

PROCEDURE Exp  (A : LONGREAL) : LONGREAL;
PROCEDURE Log  (A : LONGREAL) : LONGREAL;
PROCEDURE Log10(A : LONGREAL) : LONGREAL;
PROCEDURE Pow(X,Y : LONGREAL) : LONGREAL;

PROCEDURE ATan2(X,Y : LONGREAL) : LONGREAL;
PROCEDURE Mod(X,Y : LONGREAL) : LONGREAL;
PROCEDURE Rexp(VAR I : INTEGER;A : LONGREAL) : LONGREAL;
PROCEDURE Sqrt(A : LONGREAL) : LONGREAL;

(* 8087 instructions *)

TYPE
  PackedBcd   = ARRAY[0..9] OF SHORTCARD;
  Environment = RECORD
                  ControlWord  : BITSET;
                  StatusWord   : BITSET;
                  TagWord      : BITSET;
                  IP           : CARDINAL;
                  Opcode       : CARDINAL;
                  DataPointer  : CARDINAL;
                  R80287       : CARDINAL;
                END;


PROCEDURE LongToBcd(A: LONGREAL)  : PackedBcd;
PROCEDURE BcdToLong(A: PackedBcd) : LONGREAL;

PROCEDURE LoadControlWord(C : BITSET);
PROCEDURE StoreControlWord() : BITSET;
PROCEDURE ClearExceptions();
PROCEDURE StoreEnvironment() : Environment;

(* end of 8087 instructions *)


VAR
  MathError  : PROCEDURE (LONGREAL, ARRAY OF CHAR);
  MathError2 : PROCEDURE (LONGREAL, LONGREAL, ARRAY OF CHAR);


END MATHLIB.