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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.2.2/] [gcc/] [config/] [soft-fp/] [double.h] - Blame information for rev 154

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1 38 julius
/* Software floating-point emulation.
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   Definitions for IEEE Double Precision
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   Copyright (C) 1997,1998,1999,2006,2007 Free Software Foundation, Inc.
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   This file is part of the GNU C Library.
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   Contributed by Richard Henderson (rth@cygnus.com),
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                  Jakub Jelinek (jj@ultra.linux.cz),
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                  David S. Miller (davem@redhat.com) and
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                  Peter Maydell (pmaydell@chiark.greenend.org.uk).
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   The GNU C Library is free software; you can redistribute it and/or
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   modify it under the terms of the GNU Lesser General Public
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   License as published by the Free Software Foundation; either
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   version 2.1 of the License, or (at your option) any later version.
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   In addition to the permissions in the GNU Lesser General Public
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   License, the Free Software Foundation gives you unlimited
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   permission to link the compiled version of this file into
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   combinations with other programs, and to distribute those
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   combinations without any restriction coming from the use of this
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   file.  (The Lesser General Public License restrictions do apply in
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   other respects; for example, they cover modification of the file,
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   and distribution when not linked into a combine executable.)
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   The GNU C Library is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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   Lesser General Public License for more details.
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   You should have received a copy of the GNU Lesser General Public
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   License along with the GNU C Library; if not, write to the Free
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   Software Foundation, 51 Franklin Street, Fifth Floor, Boston,
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   MA 02110-1301, USA.  */
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#if _FP_W_TYPE_SIZE < 32
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#error "Here's a nickel kid.  Go buy yourself a real computer."
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#endif
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#if _FP_W_TYPE_SIZE < 64
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#define _FP_FRACTBITS_D         (2 * _FP_W_TYPE_SIZE)
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#else
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#define _FP_FRACTBITS_D         _FP_W_TYPE_SIZE
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#endif
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#define _FP_FRACBITS_D          53
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#define _FP_FRACXBITS_D         (_FP_FRACTBITS_D - _FP_FRACBITS_D)
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#define _FP_WFRACBITS_D         (_FP_WORKBITS + _FP_FRACBITS_D)
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#define _FP_WFRACXBITS_D        (_FP_FRACTBITS_D - _FP_WFRACBITS_D)
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#define _FP_EXPBITS_D           11
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#define _FP_EXPBIAS_D           1023
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#define _FP_EXPMAX_D            2047
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#define _FP_QNANBIT_D           \
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        ((_FP_W_TYPE)1 << (_FP_FRACBITS_D-2) % _FP_W_TYPE_SIZE)
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#define _FP_QNANBIT_SH_D                \
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        ((_FP_W_TYPE)1 << (_FP_FRACBITS_D-2+_FP_WORKBITS) % _FP_W_TYPE_SIZE)
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#define _FP_IMPLBIT_D           \
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        ((_FP_W_TYPE)1 << (_FP_FRACBITS_D-1) % _FP_W_TYPE_SIZE)
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#define _FP_IMPLBIT_SH_D                \
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        ((_FP_W_TYPE)1 << (_FP_FRACBITS_D-1+_FP_WORKBITS) % _FP_W_TYPE_SIZE)
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#define _FP_OVERFLOW_D          \
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        ((_FP_W_TYPE)1 << _FP_WFRACBITS_D % _FP_W_TYPE_SIZE)
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typedef float DFtype __attribute__((mode(DF)));
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#if _FP_W_TYPE_SIZE < 64
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67
union _FP_UNION_D
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{
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  DFtype flt;
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  struct {
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#if __BYTE_ORDER == __BIG_ENDIAN
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    unsigned sign  : 1;
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    unsigned exp   : _FP_EXPBITS_D;
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    unsigned frac1 : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0) - _FP_W_TYPE_SIZE;
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    unsigned frac0 : _FP_W_TYPE_SIZE;
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#else
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    unsigned frac0 : _FP_W_TYPE_SIZE;
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    unsigned frac1 : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0) - _FP_W_TYPE_SIZE;
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    unsigned exp   : _FP_EXPBITS_D;
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    unsigned sign  : 1;
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#endif
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  } bits __attribute__((packed));
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};
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#define FP_DECL_D(X)            _FP_DECL(2,X)
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#define FP_UNPACK_RAW_D(X,val)  _FP_UNPACK_RAW_2(D,X,val)
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#define FP_UNPACK_RAW_DP(X,val) _FP_UNPACK_RAW_2_P(D,X,val)
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#define FP_PACK_RAW_D(val,X)    _FP_PACK_RAW_2(D,val,X)
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#define FP_PACK_RAW_DP(val,X)           \
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  do {                                  \
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    if (!FP_INHIBIT_RESULTS)            \
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      _FP_PACK_RAW_2_P(D,val,X);        \
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  } while (0)
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#define FP_UNPACK_D(X,val)              \
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  do {                                  \
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    _FP_UNPACK_RAW_2(D,X,val);          \
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    _FP_UNPACK_CANONICAL(D,2,X);        \
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  } while (0)
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#define FP_UNPACK_DP(X,val)             \
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  do {                                  \
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    _FP_UNPACK_RAW_2_P(D,X,val);        \
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    _FP_UNPACK_CANONICAL(D,2,X);        \
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  } while (0)
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#define FP_UNPACK_SEMIRAW_D(X,val)      \
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  do {                                  \
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    _FP_UNPACK_RAW_2(D,X,val);          \
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    _FP_UNPACK_SEMIRAW(D,2,X);          \
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  } while (0)
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113
#define FP_UNPACK_SEMIRAW_DP(X,val)     \
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  do {                                  \
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    _FP_UNPACK_RAW_2_P(D,X,val);        \
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    _FP_UNPACK_SEMIRAW(D,2,X);          \
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  } while (0)
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119
#define FP_PACK_D(val,X)                \
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  do {                                  \
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    _FP_PACK_CANONICAL(D,2,X);          \
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    _FP_PACK_RAW_2(D,val,X);            \
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  } while (0)
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#define FP_PACK_DP(val,X)               \
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  do {                                  \
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    _FP_PACK_CANONICAL(D,2,X);          \
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    if (!FP_INHIBIT_RESULTS)            \
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      _FP_PACK_RAW_2_P(D,val,X);        \
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  } while (0)
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132
#define FP_PACK_SEMIRAW_D(val,X)        \
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  do {                                  \
134
    _FP_PACK_SEMIRAW(D,2,X);            \
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    _FP_PACK_RAW_2(D,val,X);            \
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  } while (0)
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138
#define FP_PACK_SEMIRAW_DP(val,X)       \
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  do {                                  \
140
    _FP_PACK_SEMIRAW(D,2,X);            \
141
    if (!FP_INHIBIT_RESULTS)            \
142
      _FP_PACK_RAW_2_P(D,val,X);        \
143
  } while (0)
144
 
145
#define FP_ISSIGNAN_D(X)                _FP_ISSIGNAN(D,2,X)
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#define FP_NEG_D(R,X)                   _FP_NEG(D,2,R,X)
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#define FP_ADD_D(R,X,Y)                 _FP_ADD(D,2,R,X,Y)
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#define FP_SUB_D(R,X,Y)                 _FP_SUB(D,2,R,X,Y)
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#define FP_MUL_D(R,X,Y)                 _FP_MUL(D,2,R,X,Y)
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#define FP_DIV_D(R,X,Y)                 _FP_DIV(D,2,R,X,Y)
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#define FP_SQRT_D(R,X)                  _FP_SQRT(D,2,R,X)
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#define _FP_SQRT_MEAT_D(R,S,T,X,Q)      _FP_SQRT_MEAT_2(R,S,T,X,Q)
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154
#define FP_CMP_D(r,X,Y,un)      _FP_CMP(D,2,r,X,Y,un)
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#define FP_CMP_EQ_D(r,X,Y)      _FP_CMP_EQ(D,2,r,X,Y)
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#define FP_CMP_UNORD_D(r,X,Y)   _FP_CMP_UNORD(D,2,r,X,Y)
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158
#define FP_TO_INT_D(r,X,rsz,rsg)        _FP_TO_INT(D,2,r,X,rsz,rsg)
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#define FP_FROM_INT_D(X,r,rs,rt)        _FP_FROM_INT(D,2,X,r,rs,rt)
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161
#define _FP_FRAC_HIGH_D(X)      _FP_FRAC_HIGH_2(X)
162
#define _FP_FRAC_HIGH_RAW_D(X)  _FP_FRAC_HIGH_2(X)
163
 
164
#else
165
 
166
union _FP_UNION_D
167
{
168
  DFtype flt;
169
  struct {
170
#if __BYTE_ORDER == __BIG_ENDIAN
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    unsigned sign   : 1;
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    unsigned exp    : _FP_EXPBITS_D;
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    _FP_W_TYPE frac : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0);
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#else
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    _FP_W_TYPE frac : _FP_FRACBITS_D - (_FP_IMPLBIT_D != 0);
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    unsigned exp    : _FP_EXPBITS_D;
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    unsigned sign   : 1;
178
#endif
179
  } bits __attribute__((packed));
180
};
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182
#define FP_DECL_D(X)            _FP_DECL(1,X)
183
#define FP_UNPACK_RAW_D(X,val)  _FP_UNPACK_RAW_1(D,X,val)
184
#define FP_UNPACK_RAW_DP(X,val) _FP_UNPACK_RAW_1_P(D,X,val)
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#define FP_PACK_RAW_D(val,X)    _FP_PACK_RAW_1(D,val,X)
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#define FP_PACK_RAW_DP(val,X)           \
187
  do {                                  \
188
    if (!FP_INHIBIT_RESULTS)            \
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      _FP_PACK_RAW_1_P(D,val,X);        \
190
  } while (0)
191
 
192
#define FP_UNPACK_D(X,val)              \
193
  do {                                  \
194
    _FP_UNPACK_RAW_1(D,X,val);          \
195
    _FP_UNPACK_CANONICAL(D,1,X);        \
196
  } while (0)
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198
#define FP_UNPACK_DP(X,val)             \
199
  do {                                  \
200
    _FP_UNPACK_RAW_1_P(D,X,val);        \
201
    _FP_UNPACK_CANONICAL(D,1,X);        \
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  } while (0)
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204
#define FP_UNPACK_SEMIRAW_D(X,val)      \
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  do {                                  \
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    _FP_UNPACK_RAW_2(1,X,val);          \
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    _FP_UNPACK_SEMIRAW(D,1,X);          \
208
  } while (0)
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210
#define FP_UNPACK_SEMIRAW_DP(X,val)     \
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  do {                                  \
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    _FP_UNPACK_RAW_2_P(1,X,val);        \
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    _FP_UNPACK_SEMIRAW(D,1,X);          \
214
  } while (0)
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216
#define FP_PACK_D(val,X)                \
217
  do {                                  \
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    _FP_PACK_CANONICAL(D,1,X);          \
219
    _FP_PACK_RAW_1(D,val,X);            \
220
  } while (0)
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222
#define FP_PACK_DP(val,X)               \
223
  do {                                  \
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    _FP_PACK_CANONICAL(D,1,X);          \
225
    if (!FP_INHIBIT_RESULTS)            \
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      _FP_PACK_RAW_1_P(D,val,X);        \
227
  } while (0)
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229
#define FP_PACK_SEMIRAW_D(val,X)        \
230
  do {                                  \
231
    _FP_PACK_SEMIRAW(D,1,X);            \
232
    _FP_PACK_RAW_1(D,val,X);            \
233
  } while (0)
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235
#define FP_PACK_SEMIRAW_DP(val,X)       \
236
  do {                                  \
237
    _FP_PACK_SEMIRAW(D,1,X);            \
238
    if (!FP_INHIBIT_RESULTS)            \
239
      _FP_PACK_RAW_1_P(D,val,X);        \
240
  } while (0)
241
 
242
#define FP_ISSIGNAN_D(X)                _FP_ISSIGNAN(D,1,X)
243
#define FP_NEG_D(R,X)                   _FP_NEG(D,1,R,X)
244
#define FP_ADD_D(R,X,Y)                 _FP_ADD(D,1,R,X,Y)
245
#define FP_SUB_D(R,X,Y)                 _FP_SUB(D,1,R,X,Y)
246
#define FP_MUL_D(R,X,Y)                 _FP_MUL(D,1,R,X,Y)
247
#define FP_DIV_D(R,X,Y)                 _FP_DIV(D,1,R,X,Y)
248
#define FP_SQRT_D(R,X)                  _FP_SQRT(D,1,R,X)
249
#define _FP_SQRT_MEAT_D(R,S,T,X,Q)      _FP_SQRT_MEAT_1(R,S,T,X,Q)
250
 
251
/* The implementation of _FP_MUL_D and _FP_DIV_D should be chosen by
252
   the target machine.  */
253
 
254
#define FP_CMP_D(r,X,Y,un)      _FP_CMP(D,1,r,X,Y,un)
255
#define FP_CMP_EQ_D(r,X,Y)      _FP_CMP_EQ(D,1,r,X,Y)
256
#define FP_CMP_UNORD_D(r,X,Y)   _FP_CMP_UNORD(D,1,r,X,Y)
257
 
258
#define FP_TO_INT_D(r,X,rsz,rsg)        _FP_TO_INT(D,1,r,X,rsz,rsg)
259
#define FP_FROM_INT_D(X,r,rs,rt)        _FP_FROM_INT(D,1,X,r,rs,rt)
260
 
261
#define _FP_FRAC_HIGH_D(X)      _FP_FRAC_HIGH_1(X)
262
#define _FP_FRAC_HIGH_RAW_D(X)  _FP_FRAC_HIGH_1(X)
263
 
264
#endif /* W_TYPE_SIZE < 64 */

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