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(* realconst.mod basic floating point test.
Copyright (C) 2001-2019 Free Software Foundation, Inc.
Contributed by Gaius Mulley <gaius.mulley@southwales.ac.uk>.
This file is part of GNU Modula-2.
GNU Modula-2 is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
GNU Modula-2 is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Modula-2; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. *)
MODULE realconst ;
FROM StrIO IMPORT WriteString, WriteLn ;
FROM MathLib0 IMPORT pi ;
FROM FpuIO IMPORT WriteReal, ReadReal ;
VAR
Degrees, Radians: REAL ;
PROCEDURE ConvertAngle (angle:REAL): REAL ;
VAR
ConversionFactor: REAL ;
BEGIN
ConversionFactor:= pi / 180.0 ;
WriteString ('Conversion factor ') ;
WriteReal (ConversionFactor, 20, 15 ) ;
WriteLn ;
RETURN ConversionFactor * angle
END ConvertAngle;
BEGIN
WriteString ("Enter an angle in degrees: ") ;
ReadReal (Degrees) ; WriteLn ;
Radians := ConvertAngle (Degrees) ;
WriteString ("The angle in radians is: ") ;
WriteReal (Radians, 20, 5) ; WriteLn ;
END realconst.
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