compiler/mlib/fpmath.h

   1 /*-
   2  * Copyright (c) 2003 Mike Barcroft <mike@FreeBSD.org>
   3  * Copyright (c) 2002 David Schultz <das@FreeBSD.ORG>
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  *
  27  * $FreeBSD: src/lib/libc/include/fpmath.h,v 1.3 2005/02/06 03:23:31 das Exp $
  28  */
  29
  30 #include <aros/cpu.h>
  31
  32 #if defined __i386__
  33 #   include "i386/_fpmath.h"
  34 #elif defined __x86_64__
  35 #   include "x86_64/_fpmath.h"
  36 #elif defined __mc68000__
  37 #   include "m68k/_fpmath.h"
  38 #elif defined __powerpc__
  39 #   include "ppc/_fpmath.h"
  40 #elif defined __arm__
  41 #   include "arm/_fpmath.h"
  42 #else
  43 #   error unsupported CPU type
  44 #endif
  45
  46 union IEEEf2bits {
  47         float   f;
  48         struct {
  49 #if !AROS_BIG_ENDIAN
  50                 unsigned int    man     :23;
  51                 unsigned int    exp     :8;
  52                 unsigned int    sign    :1;
  53 #else /* AROS_BIG_ENDIAN */
  54                 unsigned int    sign    :1;
  55                 unsigned int    exp     :8;
  56                 unsigned int    man     :23;
  57 #endif
  58         } bits;
  59 };
  60
  61 #define DBL_MANH_SIZE   20
  62 #define DBL_MANL_SIZE   32
  63
  64 union IEEEd2bits {
  65         double  d;
  66         struct {
  67 #if !AROS_BIG_ENDIAN
  68                 unsigned int    manl    :32;
  69                 unsigned int    manh    :20;
  70                 unsigned int    exp     :11;
  71                 unsigned int    sign    :1;
  72 #else /* AROS_BIG_ENDIAN */
  73                 unsigned int    sign    :1;
  74                 unsigned int    exp     :11;
  75                 unsigned int    manh    :20;
  76                 unsigned int    manl    :32;
  77 #endif
  78         } bits;
  79 };