/* Software floating-point emulation.
Definitions for IEEE Double Precision
Copyright (C) 1997,1998,1999 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Richard Henderson (rth@cygnus.com),
Jakub Jelinek (jj@ultra.linux.cz),
David S. Miller (davem@redhat.com) and
Peter Maydell (pmaydell@chiark.greenend.org.uk).
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
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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_DOUBLE_H__
#define __MATH_EMU_DOUBLE_H__
#if _FP_W_TYPE_SIZE < 32
#error "Here's a nickel kid. Go buy yourself a real computer."
#endif
#if _FP_W_TYPE_SIZE < 64
#define _FP_FRACTBITS_D (2 * _FP_W_TYPE_SIZE)
#else
#define _FP_FRACTBITS_D _FP_W_TYPE_SIZE
#endif
#define _FP_FRACBITS_D 53
#define _FP_FRACXBITS_D (_FP_FRACTBITS_D - _FP_FRACBITS_D)
#define _FP_WFRACBITS_D (_FP_WORKBITS + _FP_FRACBITS_D)
#define _FP_WFRACXBITS_D (_FP_FRACTBITS_D - _FP_WFRACBITS_D)
#define _FP_EXPBITS_D 11
#define _FP_EXPBIAS_D 1023
#define _FP_EXPMAX_D 2047
#define _FP_QNANBIT_D \
((_FP_W_TYPE)1 << (_FP_FRACBITS_D-2) % _FP_W_TYPE_SIZE)
#define _FP_IMPLBIT_D \
((_FP_W_TYPE)1 << (_FP_FRACBITS_D-1) % _FP_W_TYPE_SIZE)
#define _FP_OVERFLOW_D \
((_FP_W_TYPE)1 << _FP_WFRACBITS_D % _FP_W_TYPE_SIZE)
#if _FP_W_TYPE_SIZE < 64
union _FP_UNION_D
{
double flt;
struct {
#if __BYTE_ORDER == __BIG_ENDIAN
unsigned sign : 1;
unsigned exp : _FP_EXPBITS_D;
unsigned frac1 : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0) - _FP_W_TYPE_SIZE;
unsigned frac0 : _FP_W_TYPE_SIZE;
#else
unsigned frac0 : _FP_W_TYPE_SIZE;
unsigned frac1 : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0) - _FP_W_TYPE_SIZE;
unsigned exp : _FP_EXPBITS_D;
unsigned sign : 1;
#endif
} bits __attribute__((packed));
};
#define FP_DECL_D(X) _FP_DECL(2,X)
#define FP_UNPACK_RAW_D(X,val) _FP_UNPACK_RAW_2(D,X,val)
#define FP_UNPACK_RAW_DP(X,val) _FP_UNPACK_RAW_2_P(D,X,val)
#define FP_PACK_RAW_D(val,X) _FP_PACK_RAW_2(D,val,X)
#define FP_PACK_RAW_DP(val,X) \
do { \
if (!FP_INHIBIT_RESULTS) \
_FP_PACK_RAW_2_P(D,val,X); \
} while (0)
#define FP_UNPACK_D(X,val) \
do { \
_FP_UNPACK_RAW_2(D,X,val); \
_FP_UNPACK_CANONICAL(D,2,X); \
} while (0)
#define FP_UNPACK_DP(X,val) \
do { \
_FP_UNPACK_RAW_2_P(D,X,val); \
_FP_UNPACK_CANONICAL(D,2,X); \
} while (0)
#define FP_PACK_D(val,X) \
do { \
_FP_PACK_CANONICAL(D,2,X); \
_FP_PACK_RAW_2(D,val,X); \
} while (0)
#define FP_PACK_DP(val,X) \
do { \
_FP_PACK_CANONICAL(D,2,X); \
if (!FP_INHIBIT_RESULTS) \
_FP_PACK_RAW_2_P(D,val,X); \
} while (0)
#define FP_ISSIGNAN_D(X) _FP_ISSIGNAN(D,2,X)
#define FP_NEG_D(R,X) _FP_NEG(D,2,R,X)
#define FP_ADD_D(R,X,Y) _FP_ADD(D,2,R,X,Y)
#define FP_SUB_D(R,X,Y) _FP_SUB(D,2,R,X,Y)
#define FP_MUL_D(R,X,Y) _FP_MUL(D,2,R,X,Y)
#define FP_DIV_D(R,X,Y) _FP_DIV(D,2,R,X,Y)
#define FP_SQRT_D(R,X) _FP_SQRT(D,2,R,X)
#define _FP_SQRT_MEAT_D(R,S,T,X,Q) _FP_SQRT_MEAT_2(R,S,T,X,Q)
#define FP_CMP_D(r,X,Y,un) _FP_CMP(D,2,r,X,Y,un)
#define FP_CMP_EQ_D(r,X,Y) _FP_CMP_EQ(D,2,r,X,Y)
#define FP_TO_INT_D(r,X,rsz,rsg) _FP_TO_INT(D,2,r,X,rsz,rsg)
#define FP_TO_INT_ROUND_D(r,X,rsz,rsg) _FP_TO_INT_ROUND(D,2,r,X,rsz,rsg)
#define FP_FROM_INT_D(X,r,rs,rt) _FP_FROM_INT(D,2,X,r,rs,rt)
#define _FP_FRAC_HIGH_D(X) _FP_FRAC_HIGH_2(X)
#define _FP_FRAC_HIGH_RAW_D(X) _FP_FRAC_HIGH_2(X)
#else
union _FP_UNION_D
{
double flt;
struct {
#if __BYTE_ORDER == __BIG_ENDIAN
unsigned sign : 1;
unsigned exp : _FP_EXPBITS_D;
unsigned long frac : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0);
#else
unsigned long frac : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0);
unsigned exp : _FP_EXPBITS_D;
unsigned sign : 1;
#endif
} bits __attribute__((packed));
};
#define FP_DECL_D(X) _FP_DECL(1,X)
#define FP_UNPACK_RAW_D(X,val) _FP_UNPACK_RAW_1(D,X,val)
#define FP_UNPACK_RAW_DP(X,val) _FP_UNPACK_RAW_1_P(D,X,val)
#define FP_PACK_RAW_D(val,X) _FP_PACK_RAW_1(D,val,X)
#define FP_PACK_RAW_DP(val,X) \
do { \
if (!FP_INHIBIT_RESULTS) \
_FP_PACK_RAW_1_P(D,val,X); \
} while (0)
#define FP_UNPACK_D(X,val) \
do { \
_FP_UNPACK_RAW_1(D,X,val); \
_FP_UNPACK_CANONICAL(D,1,X); \
} while (0)
#define FP_UNPACK_DP(X,val) \
do { \
_FP_UNPACK_RAW_1_P(D,X,val); \
_FP_UNPACK_CANONICAL(D,1,X); \
} while (0)
#define FP_PACK_D(val,X) \
do { \
_FP_PACK_CANONICAL(D,1,X); \
_FP_PACK_RAW_1(D,val,X); \
} while (0)
#define FP_PACK_DP(val,X) \
do { \
_FP_PACK_CANONICAL(D,1,X); \
if (!FP_INHIBIT_RESULTS) \
_FP_PACK_RAW_1_P(D,val,X); \
} while (0)
#define FP_ISSIGNAN_D(X) _FP_ISSIGNAN(D,1,X)
#define FP_NEG_D(R,X) _FP_NEG(D,1,R,X)
#define FP_ADD_D(R,X,Y) _FP_ADD(D,1,R,X,Y)
#define FP_SUB_D(R,X,Y) _FP_SUB(D,1,R,X,Y)
#define FP_MUL_D(R,X,Y) _FP_MUL(D,1,R,X,Y)
#define FP_DIV_D(R,X,Y) _FP_DIV(D,1,R,X,Y)
#define FP_SQRT_D(R,X) _FP_SQRT(D,1,R,X)
#define _FP_SQRT_MEAT_D(R,S,T,X,Q) _FP_SQRT_MEAT_1(R,S,T,X,Q)
/* The implementation of _FP_MUL_D and _FP_DIV_D should be chosen by
the target machine. */
#define FP_CMP_D(r,X,Y,un) _FP_CMP(D,1,r,X,Y,un)
#define FP_CMP_EQ_D(r,X,Y) _FP_CMP_EQ(D,1,r,X,Y)
#define FP_TO_INT_D(r,X,rsz,rsg) _FP_TO_INT(D,1,r,X,rsz,rsg)
#define FP_TO_INT_ROUND_D(r,X,rsz,rsg) _FP_TO_INT_ROUND(D,1,r,X,rsz,rsg)
#define FP_FROM_INT_D(X,r,rs,rt) _FP_FROM_INT(D,1,X,r,rs,rt)
#define _FP_FRAC_HIGH_D(X) _FP_FRAC_HIGH_1(X)
#define _FP_FRAC_HIGH_RAW_D(X) _FP_FRAC_HIGH_1(X)
#endif /* W_TYPE_SIZE < 64 */
#endif /* __MATH_EMU_DOUBLE_H__ */
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