Viewing file: 
quad.h (6.48 KB) -rw-r--r--Select action/file-type:
(
+) |
(
+) |
(
+) |
Code (
+) |
Session (
+) |
(
+) |
SDB (
+) |
(
+) |
(
+) |
(
+) |
(
+) |
(
+) |
/* Software floating-point emulation.
Definitions for IEEE Quad 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_QUAD_H__
#define __MATH_EMU_QUAD_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_Q (4*_FP_W_TYPE_SIZE)
#else
#define _FP_FRACTBITS_Q (2*_FP_W_TYPE_SIZE)
#endif
#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
#define _FP_QNANBIT_Q \
((_FP_W_TYPE)1 << (_FP_FRACBITS_Q-2) % _FP_W_TYPE_SIZE)
#define _FP_IMPLBIT_Q \
((_FP_W_TYPE)1 << (_FP_FRACBITS_Q-1) % _FP_W_TYPE_SIZE)
#define _FP_OVERFLOW_Q \
((_FP_W_TYPE)1 << (_FP_WFRACBITS_Q % _FP_W_TYPE_SIZE))
#if _FP_W_TYPE_SIZE < 64
union _FP_UNION_Q
{
long double 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));
};
#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)
#define FP_UNPACK_Q(X,val) \
do { \
_FP_UNPACK_RAW_4(Q,X,val); \
_FP_UNPACK_CANONICAL(Q,4,X); \
} while (0)
#define FP_UNPACK_QP(X,val) \
do { \
_FP_UNPACK_RAW_4_P(Q,X,val); \
_FP_UNPACK_CANONICAL(Q,4,X); \
} while (0)
#define FP_PACK_Q(val,X) \
do { \
_FP_PACK_CANONICAL(Q,4,X); \
_FP_PACK_RAW_4(Q,val,X); \
} while (0)
#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)
#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)
#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_TO_INT_Q(r,X,rsz,rsg) _FP_TO_INT(Q,4,r,X,rsz,rsg)
#define FP_TO_INT_ROUND_Q(r,X,rsz,rsg) _FP_TO_INT_ROUND(Q,4,r,X,rsz,rsg)
#define FP_FROM_INT_Q(X,r,rs,rt) _FP_FROM_INT(Q,4,X,r,rs,rt)
#define _FP_FRAC_HIGH_Q(X) _FP_FRAC_HIGH_4(X)
#define _FP_FRAC_HIGH_RAW_Q(X) _FP_FRAC_HIGH_4(X)
#else /* not _FP_W_TYPE_SIZE < 64 */
union _FP_UNION_Q
{
long double flt /* __attribute__((mode(TF))) */ ;
struct {
#if __BYTE_ORDER == __BIG_ENDIAN
unsigned sign : 1;
unsigned exp : _FP_EXPBITS_Q;
unsigned long frac1 : _FP_FRACBITS_Q-(_FP_IMPLBIT_Q != 0)-_FP_W_TYPE_SIZE;
unsigned long frac0 : _FP_W_TYPE_SIZE;
#else
unsigned long frac0 : _FP_W_TYPE_SIZE;
unsigned long frac1 : _FP_FRACBITS_Q-(_FP_IMPLBIT_Q != 0)-_FP_W_TYPE_SIZE;
unsigned exp : _FP_EXPBITS_Q;
unsigned sign : 1;
#endif
} bits;
};
#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)
#define FP_UNPACK_Q(X,val) \
do { \
_FP_UNPACK_RAW_2(Q,X,val); \
_FP_UNPACK_CANONICAL(Q,2,X); \
} while (0)
#define FP_UNPACK_QP(X,val) \
do { \
_FP_UNPACK_RAW_2_P(Q,X,val); \
_FP_UNPACK_CANONICAL(Q,2,X); \
} while (0)
#define FP_PACK_Q(val,X) \
do { \
_FP_PACK_CANONICAL(Q,2,X); \
_FP_PACK_RAW_2(Q,val,X); \
} while (0)
#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)
#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)
#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_TO_INT_Q(r,X,rsz,rsg) _FP_TO_INT(Q,2,r,X,rsz,rsg)
#define FP_TO_INT_ROUND_Q(r,X,rsz,rsg) _FP_TO_INT_ROUND(Q,2,r,X,rsz,rsg)
#define FP_FROM_INT_Q(X,r,rs,rt) _FP_FROM_INT(Q,2,X,r,rs,rt)
#define _FP_FRAC_HIGH_Q(X) _FP_FRAC_HIGH_2(X)
#define _FP_FRAC_HIGH_RAW_Q(X) _FP_FRAC_HIGH_2(X)
#endif /* not _FP_W_TYPE_SIZE < 64 */
#endif /* __MATH_EMU_QUAD_H__ */
