(* testfp2.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 testfp2 ;

IMPORT fp ;


PROCEDURE foo (x: REAL) : REAL ;
BEGIN
   WHILE x>fp.pi DO
      x := x - 2.0*fp.pi
   END ;
   WHILE x>fp.pi DO
      x := x + 2.0*fp.pi
   END ;
   RETURN( x )
END foo ;

VAR
   y: REAL ;
BEGIN
   y := foo(7.0)
END testfp2.