rom/mathffp/mathffp_intern.h

   1 /*
   2     Copyright © 1995-2004, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5 #ifndef __MATHFFP_INTERN_H__
   6 #define __MATHFFP_INTERN_H__
   7
   8 /* the following line is necessary so that the function headers are
   9    created correctly and the functions can be compiled properly */
  10
  11 #define float LONG
  12
  13
  14 /* This is a short file that contains a few things every mathffp function
  15     needs */
  16
  17 #ifndef AROS_LIBCALL_H
  18 #   include <aros/libcall.h>
  19 #endif
  20 #include <proto/arossupport.h>
  21 #ifndef PROTO_MATHFFP_H
  22 #   include <proto/mathffp.h>
  23 #endif
  24
  25 #ifndef EXEC_EXECBASE_H
  26 #   include <exec/execbase.h>
  27 #endif
  28 #ifndef EXEC_TYPES_H
  29 #   include <exec/types.h>
  30 #endif
  31 #ifndef EXEC_LIBRARIES_H
  32 #   include <exec/libraries.h>
  33 #endif
  34 #ifndef DOS_DOS_H
  35 #   include <dos/dos.h>
  36 #endif
  37
  38 #include <proto/exec.h>
  39 #include <libcore/base.h>
  40
  41 /*
  42     This is the MAthffpBase structure. It is documented here because it is
  43     completely private. Applications should treat it as a struct Library, and
  44     use the mathffp.library functions to get information.
  45 */
  46
  47 #undef SysBase
  48 #define SysBase (MathBase->lh_SysBase)
  49
  50 #define FFPMantisse_Mask 0xFFFFFF00 /* 24 bit for the mantisse    */
  51 #define FFPExponent_Mask 0x0000007F /*  7 bit for the exponent    */
  52 #define FFPSign_Mask     0x00000080 /*  1 bit for the sign        */
  53
  54 #define IEEESPMantisse_Mask 0x007FFFFF /* 23 bit for the mantisse */
  55 #define IEEESPExponent_Mask 0x7F800000 /*  8 bit for the exponent */
  56 #define IEEESPSign_Mask     0x80000000 /*  1 bit for the sign     */
  57
  58 #define Zero_Bit     0x00000004  /* Flags of the 680xx CPU */
  59 #define Negative_Bit 0x00000008
  60 #define Overflow_Bit 0x00000002
  61
  62 /* some Motorla fast floting point format constants  */
  63 #define SP_zero   0x00000000
  64 #define SP_pinfty 0xffffff7f
  65
  66 /* basic constants */
  67 #define one      0x80000041 /*  1.00000000000000000000e+00 */
  68 #define minusone 0x800000c1 /* -1.00000000000000000000e+00 */
  69 #define two      0x80000042 /*  2.0                        */
  70 #define onehalf  0x80000040 /*  0.5                        */
  71
  72 #endif /* __MATHFFP_INTERN_H__  */