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/* Software floating-point emulation. |
Definitions for IEEE Quad Precision. |
Copyright (C) 1997,1998,1999,2006,2007 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). |
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The GNU C Library is free software; you can redistribute it and/or |
modify it under the terms of the GNU Lesser General Public |
License as published by the Free Software Foundation; either |
version 2.1 of the License, or (at your option) any later version. |
|
In addition to the permissions in the GNU Lesser General Public |
License, the Free Software Foundation gives you unlimited |
permission to link the compiled version of this file into |
combinations with other programs, and to distribute those |
combinations without any restriction coming from the use of this |
file. (The Lesser General Public License restrictions do apply in |
other respects; for example, they cover modification of the file, |
and distribution when not linked into a combine executable.) |
|
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 |
Lesser General Public License for more details. |
|
You should have received a copy of the GNU Lesser General Public |
License along with the GNU C Library; if not, write to the Free |
Software Foundation, 51 Franklin Street, Fifth Floor, Boston, |
MA 02110-1301, USA. */ |
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#if _FP_W_TYPE_SIZE < 32 |
#error "Here's a nickel, kid. Go buy yourself a real computer." |
#endif |
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#if _FP_W_TYPE_SIZE < 64 |
#define _FP_FRACTBITS_Q (4*_FP_W_TYPE_SIZE) |
#else |
#define _FP_FRACTBITS_Q (2*_FP_W_TYPE_SIZE) |
#endif |
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#define _FP_FRACBITS_Q 113 |
#define _FP_FRACXBITS_Q (_FP_FRACTBITS_Q - _FP_FRACBITS_Q) |
#define _FP_WFRACBITS_Q (_FP_WORKBITS + _FP_FRACBITS_Q) |
#define _FP_WFRACXBITS_Q (_FP_FRACTBITS_Q - _FP_WFRACBITS_Q) |
#define _FP_EXPBITS_Q 15 |
#define _FP_EXPBIAS_Q 16383 |
#define _FP_EXPMAX_Q 32767 |
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#define _FP_QNANBIT_Q \ |
((_FP_W_TYPE)1 << (_FP_FRACBITS_Q-2) % _FP_W_TYPE_SIZE) |
#define _FP_QNANBIT_SH_Q \ |
((_FP_W_TYPE)1 << (_FP_FRACBITS_Q-2+_FP_WORKBITS) % _FP_W_TYPE_SIZE) |
#define _FP_IMPLBIT_Q \ |
((_FP_W_TYPE)1 << (_FP_FRACBITS_Q-1) % _FP_W_TYPE_SIZE) |
#define _FP_IMPLBIT_SH_Q \ |
((_FP_W_TYPE)1 << (_FP_FRACBITS_Q-1+_FP_WORKBITS) % _FP_W_TYPE_SIZE) |
#define _FP_OVERFLOW_Q \ |
((_FP_W_TYPE)1 << (_FP_WFRACBITS_Q % _FP_W_TYPE_SIZE)) |
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typedef float TFtype __attribute__((mode(TF))); |
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#if _FP_W_TYPE_SIZE < 64 |
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union _FP_UNION_Q |
{ |
TFtype flt; |
struct |
{ |
#if __BYTE_ORDER == __BIG_ENDIAN |
unsigned sign : 1; |
unsigned exp : _FP_EXPBITS_Q; |
unsigned long frac3 : _FP_FRACBITS_Q - (_FP_IMPLBIT_Q != 0)-(_FP_W_TYPE_SIZE * 3); |
unsigned long frac2 : _FP_W_TYPE_SIZE; |
unsigned long frac1 : _FP_W_TYPE_SIZE; |
unsigned long frac0 : _FP_W_TYPE_SIZE; |
#else |
unsigned long frac0 : _FP_W_TYPE_SIZE; |
unsigned long frac1 : _FP_W_TYPE_SIZE; |
unsigned long frac2 : _FP_W_TYPE_SIZE; |
unsigned long frac3 : _FP_FRACBITS_Q - (_FP_IMPLBIT_Q != 0)-(_FP_W_TYPE_SIZE * 3); |
unsigned exp : _FP_EXPBITS_Q; |
unsigned sign : 1; |
#endif /* not bigendian */ |
} bits __attribute__((packed)); |
}; |
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#define FP_DECL_Q(X) _FP_DECL(4,X) |
#define FP_UNPACK_RAW_Q(X,val) _FP_UNPACK_RAW_4(Q,X,val) |
#define FP_UNPACK_RAW_QP(X,val) _FP_UNPACK_RAW_4_P(Q,X,val) |
#define FP_PACK_RAW_Q(val,X) _FP_PACK_RAW_4(Q,val,X) |
#define FP_PACK_RAW_QP(val,X) \ |
do { \ |
if (!FP_INHIBIT_RESULTS) \ |
_FP_PACK_RAW_4_P(Q,val,X); \ |
} while (0) |
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#define FP_UNPACK_Q(X,val) \ |
do { \ |
_FP_UNPACK_RAW_4(Q,X,val); \ |
_FP_UNPACK_CANONICAL(Q,4,X); \ |
} while (0) |
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#define FP_UNPACK_QP(X,val) \ |
do { \ |
_FP_UNPACK_RAW_4_P(Q,X,val); \ |
_FP_UNPACK_CANONICAL(Q,4,X); \ |
} while (0) |
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#define FP_UNPACK_SEMIRAW_Q(X,val) \ |
do { \ |
_FP_UNPACK_RAW_4(Q,X,val); \ |
_FP_UNPACK_SEMIRAW(Q,4,X); \ |
} while (0) |
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#define FP_UNPACK_SEMIRAW_QP(X,val) \ |
do { \ |
_FP_UNPACK_RAW_4_P(Q,X,val); \ |
_FP_UNPACK_SEMIRAW(Q,4,X); \ |
} while (0) |
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#define FP_PACK_Q(val,X) \ |
do { \ |
_FP_PACK_CANONICAL(Q,4,X); \ |
_FP_PACK_RAW_4(Q,val,X); \ |
} while (0) |
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#define FP_PACK_QP(val,X) \ |
do { \ |
_FP_PACK_CANONICAL(Q,4,X); \ |
if (!FP_INHIBIT_RESULTS) \ |
_FP_PACK_RAW_4_P(Q,val,X); \ |
} while (0) |
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#define FP_PACK_SEMIRAW_Q(val,X) \ |
do { \ |
_FP_PACK_SEMIRAW(Q,4,X); \ |
_FP_PACK_RAW_4(Q,val,X); \ |
} while (0) |
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#define FP_PACK_SEMIRAW_QP(val,X) \ |
do { \ |
_FP_PACK_SEMIRAW(Q,4,X); \ |
if (!FP_INHIBIT_RESULTS) \ |
_FP_PACK_RAW_4_P(Q,val,X); \ |
} while (0) |
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#define FP_ISSIGNAN_Q(X) _FP_ISSIGNAN(Q,4,X) |
#define FP_NEG_Q(R,X) _FP_NEG(Q,4,R,X) |
#define FP_ADD_Q(R,X,Y) _FP_ADD(Q,4,R,X,Y) |
#define FP_SUB_Q(R,X,Y) _FP_SUB(Q,4,R,X,Y) |
#define FP_MUL_Q(R,X,Y) _FP_MUL(Q,4,R,X,Y) |
#define FP_DIV_Q(R,X,Y) _FP_DIV(Q,4,R,X,Y) |
#define FP_SQRT_Q(R,X) _FP_SQRT(Q,4,R,X) |
#define _FP_SQRT_MEAT_Q(R,S,T,X,Q) _FP_SQRT_MEAT_4(R,S,T,X,Q) |
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#define FP_CMP_Q(r,X,Y,un) _FP_CMP(Q,4,r,X,Y,un) |
#define FP_CMP_EQ_Q(r,X,Y) _FP_CMP_EQ(Q,4,r,X,Y) |
#define FP_CMP_UNORD_Q(r,X,Y) _FP_CMP_UNORD(Q,4,r,X,Y) |
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#define FP_TO_INT_Q(r,X,rsz,rsg) _FP_TO_INT(Q,4,r,X,rsz,rsg) |
#define FP_FROM_INT_Q(X,r,rs,rt) _FP_FROM_INT(Q,4,X,r,rs,rt) |
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#define _FP_FRAC_HIGH_Q(X) _FP_FRAC_HIGH_4(X) |
#define _FP_FRAC_HIGH_RAW_Q(X) _FP_FRAC_HIGH_4(X) |
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#else /* not _FP_W_TYPE_SIZE < 64 */ |
union _FP_UNION_Q |
{ |
TFtype flt /* __attribute__((mode(TF))) */ ; |
struct { |
_FP_W_TYPE a, b; |
} longs; |
struct { |
#if __BYTE_ORDER == __BIG_ENDIAN |
unsigned sign : 1; |
unsigned exp : _FP_EXPBITS_Q; |
_FP_W_TYPE frac1 : _FP_FRACBITS_Q - (_FP_IMPLBIT_Q != 0) - _FP_W_TYPE_SIZE; |
_FP_W_TYPE frac0 : _FP_W_TYPE_SIZE; |
#else |
_FP_W_TYPE frac0 : _FP_W_TYPE_SIZE; |
_FP_W_TYPE frac1 : _FP_FRACBITS_Q - (_FP_IMPLBIT_Q != 0) - _FP_W_TYPE_SIZE; |
unsigned exp : _FP_EXPBITS_Q; |
unsigned sign : 1; |
#endif |
} bits; |
}; |
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#define FP_DECL_Q(X) _FP_DECL(2,X) |
#define FP_UNPACK_RAW_Q(X,val) _FP_UNPACK_RAW_2(Q,X,val) |
#define FP_UNPACK_RAW_QP(X,val) _FP_UNPACK_RAW_2_P(Q,X,val) |
#define FP_PACK_RAW_Q(val,X) _FP_PACK_RAW_2(Q,val,X) |
#define FP_PACK_RAW_QP(val,X) \ |
do { \ |
if (!FP_INHIBIT_RESULTS) \ |
_FP_PACK_RAW_2_P(Q,val,X); \ |
} while (0) |
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#define FP_UNPACK_Q(X,val) \ |
do { \ |
_FP_UNPACK_RAW_2(Q,X,val); \ |
_FP_UNPACK_CANONICAL(Q,2,X); \ |
} while (0) |
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#define FP_UNPACK_QP(X,val) \ |
do { \ |
_FP_UNPACK_RAW_2_P(Q,X,val); \ |
_FP_UNPACK_CANONICAL(Q,2,X); \ |
} while (0) |
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#define FP_UNPACK_SEMIRAW_Q(X,val) \ |
do { \ |
_FP_UNPACK_RAW_2(Q,X,val); \ |
_FP_UNPACK_SEMIRAW(Q,2,X); \ |
} while (0) |
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#define FP_UNPACK_SEMIRAW_QP(X,val) \ |
do { \ |
_FP_UNPACK_RAW_2_P(Q,X,val); \ |
_FP_UNPACK_SEMIRAW(Q,2,X); \ |
} while (0) |
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#define FP_PACK_Q(val,X) \ |
do { \ |
_FP_PACK_CANONICAL(Q,2,X); \ |
_FP_PACK_RAW_2(Q,val,X); \ |
} while (0) |
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#define FP_PACK_QP(val,X) \ |
do { \ |
_FP_PACK_CANONICAL(Q,2,X); \ |
if (!FP_INHIBIT_RESULTS) \ |
_FP_PACK_RAW_2_P(Q,val,X); \ |
} while (0) |
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#define FP_PACK_SEMIRAW_Q(val,X) \ |
do { \ |
_FP_PACK_SEMIRAW(Q,2,X); \ |
_FP_PACK_RAW_2(Q,val,X); \ |
} while (0) |
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#define FP_PACK_SEMIRAW_QP(val,X) \ |
do { \ |
_FP_PACK_SEMIRAW(Q,2,X); \ |
if (!FP_INHIBIT_RESULTS) \ |
_FP_PACK_RAW_2_P(Q,val,X); \ |
} while (0) |
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#define FP_ISSIGNAN_Q(X) _FP_ISSIGNAN(Q,2,X) |
#define FP_NEG_Q(R,X) _FP_NEG(Q,2,R,X) |
#define FP_ADD_Q(R,X,Y) _FP_ADD(Q,2,R,X,Y) |
#define FP_SUB_Q(R,X,Y) _FP_SUB(Q,2,R,X,Y) |
#define FP_MUL_Q(R,X,Y) _FP_MUL(Q,2,R,X,Y) |
#define FP_DIV_Q(R,X,Y) _FP_DIV(Q,2,R,X,Y) |
#define FP_SQRT_Q(R,X) _FP_SQRT(Q,2,R,X) |
#define _FP_SQRT_MEAT_Q(R,S,T,X,Q) _FP_SQRT_MEAT_2(R,S,T,X,Q) |
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#define FP_CMP_Q(r,X,Y,un) _FP_CMP(Q,2,r,X,Y,un) |
#define FP_CMP_EQ_Q(r,X,Y) _FP_CMP_EQ(Q,2,r,X,Y) |
#define FP_CMP_UNORD_Q(r,X,Y) _FP_CMP_UNORD(Q,2,r,X,Y) |
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#define FP_TO_INT_Q(r,X,rsz,rsg) _FP_TO_INT(Q,2,r,X,rsz,rsg) |
#define FP_FROM_INT_Q(X,r,rs,rt) _FP_FROM_INT(Q,2,X,r,rs,rt) |
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#define _FP_FRAC_HIGH_Q(X) _FP_FRAC_HIGH_2(X) |
#define _FP_FRAC_HIGH_RAW_Q(X) _FP_FRAC_HIGH_2(X) |
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#endif /* not _FP_W_TYPE_SIZE < 64 */ |