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Release 4.12 include/math-emu/single.h

Directory: include/math-emu
/* Software floating-point emulation.
   Definitions for IEEE Single Precision.
   Copyright (C) 1997,1998,1999 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Richard Henderson (,
                  Jakub Jelinek (,
                  David S. Miller ( and
                  Peter Maydell (

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public License as
   published by the Free Software Foundation; either version 2 of the
   License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If
   not, write to the Free Software Foundation, Inc.,
   59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

#ifndef    __MATH_EMU_SINGLE_H__

#define    __MATH_EMU_SINGLE_H__

#if _FP_W_TYPE_SIZE < 32
#error "Here's a nickel kid.  Go buy yourself a real computer."

#define _FP_FRACBITS_S		24




#define _FP_EXPBITS_S		8

#define _FP_EXPBIAS_S		127

#define _FP_EXPMAX_S		255

#define _FP_QNANBIT_S		((_FP_W_TYPE)1 << (_FP_FRACBITS_S-2))

#define _FP_IMPLBIT_S		((_FP_W_TYPE)1 << (_FP_FRACBITS_S-1))

#define _FP_OVERFLOW_S		((_FP_W_TYPE)1 << (_FP_WFRACBITS_S))

/* The implementation of _FP_MUL_MEAT_S and _FP_DIV_MEAT_S should be
   chosen by the target machine.  */

union _FP_UNION_S
float flt;
  struct {
unsigned sign : 1;
unsigned exp  : _FP_EXPBITS_S;
unsigned frac : _FP_FRACBITS_S - (_FP_IMPLBIT_S != 0);
    unsigned frac : _FP_FRACBITS_S - (_FP_IMPLBIT_S != 0);
    unsigned exp  : _FP_EXPBITS_S;
    unsigned sign : 1;
} bits __attribute__((packed));

#define FP_DECL_S(X)		_FP_DECL(1,X)

#define FP_UNPACK_RAW_S(X,val)	_FP_UNPACK_RAW_1(S,X,val)

#define FP_UNPACK_RAW_SP(X,val)	_FP_UNPACK_RAW_1_P(S,X,val)

#define FP_PACK_RAW_S(val,X)	_FP_PACK_RAW_1(S,val,X)

#define FP_PACK_RAW_SP(val,X)		\
  do {                                    \
    if (!FP_INHIBIT_RESULTS)            \
      _FP_PACK_RAW_1_P(S,val,X);        \
  } while (0)

#define FP_UNPACK_S(X,val)		\
  do {                                    \
    _FP_UNPACK_RAW_1(S,X,val);          \
    _FP_UNPACK_CANONICAL(S,1,X);        \
  } while (0)

#define FP_UNPACK_SP(X,val)		\
  do {                                    \
    _FP_UNPACK_RAW_1_P(S,X,val);        \
    _FP_UNPACK_CANONICAL(S,1,X);        \
  } while (0)

#define FP_PACK_S(val,X)		\
  do {                                    \
    _FP_PACK_CANONICAL(S,1,X);          \
    _FP_PACK_RAW_1(S,val,X);            \
  } while (0)

#define FP_PACK_SP(val,X)		\
  do {                                    \
    _FP_PACK_CANONICAL(S,1,X);          \
    if (!FP_INHIBIT_RESULTS)            \
      _FP_PACK_RAW_1_P(S,val,X);        \
  } while (0)


#define FP_NEG_S(R,X)			_FP_NEG(S,1,R,X)

#define FP_ADD_S(R,X,Y)			_FP_ADD(S,1,R,X,Y)

#define FP_SUB_S(R,X,Y)			_FP_SUB(S,1,R,X,Y)

#define FP_MUL_S(R,X,Y)			_FP_MUL(S,1,R,X,Y)

#define FP_DIV_S(R,X,Y)			_FP_DIV(S,1,R,X,Y)

#define FP_SQRT_S(R,X)			_FP_SQRT(S,1,R,X)


#define FP_CMP_S(r,X,Y,un)	_FP_CMP(S,1,r,X,Y,un)

#define FP_CMP_EQ_S(r,X,Y)	_FP_CMP_EQ(S,1,r,X,Y)

#define FP_TO_INT_S(r,X,rsz,rsg)	_FP_TO_INT(S,1,r,X,rsz,rsg)

#define FP_TO_INT_ROUND_S(r,X,rsz,rsg)	_FP_TO_INT_ROUND(S,1,r,X,rsz,rsg)

#define FP_FROM_INT_S(X,r,rs,rt)	_FP_FROM_INT(S,1,X,r,rs,rt)



#endif /* __MATH_EMU_SINGLE_H__ */

Overall Contributors

Linus Torvalds (pre-git)36797.61%480.00%
Linus Torvalds92.39%120.00%
Directory: include/math-emu
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