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- /* fix-num.c: conversions on ``fixnums'', which are a 32-bit
- word with 20 bits of fraction.
-
- Copyright (C) 1992 Free Software Foundation, Inc.
-
- This program 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 2, or (at your option)
- any later version.
-
- This program 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 this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #include "config.h"
-
- #include "fix-num.h"
-
-
- #define FIX_UNITY (1 << 20)
-
-
- const real
- fix_to_real (fix_word f)
- {
- real r = f / FIX_UNITY + ((real) (f % FIX_UNITY) / (real) FIX_UNITY);
-
- return r;
- }
-
-
- const fix_word
- real_to_fix (real r)
- {
- fix_word f = floor (r) * FIX_UNITY + (r - floor (r)) * FIX_UNITY;
-
- return f;
- }
-