327 lines
9.7 KiB
C
327 lines
9.7 KiB
C
/* Software floating-point emulation.
|
|
Definitions for IEEE Quad Precision.
|
|
Copyright (C) 1997-2022 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
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, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef SOFT_FP_QUAD_H
|
|
#define SOFT_FP_QUAD_H 1
|
|
|
|
#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)
|
|
# define _FP_FRACTBITS_DW_Q (8*_FP_W_TYPE_SIZE)
|
|
#else
|
|
# define _FP_FRACTBITS_Q (2*_FP_W_TYPE_SIZE)
|
|
# define _FP_FRACTBITS_DW_Q (4*_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_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))
|
|
|
|
#define _FP_WFRACBITS_DW_Q (2 * _FP_WFRACBITS_Q)
|
|
#define _FP_WFRACXBITS_DW_Q (_FP_FRACTBITS_DW_Q - _FP_WFRACBITS_DW_Q)
|
|
#define _FP_HIGHBIT_DW_Q \
|
|
((_FP_W_TYPE) 1 << (_FP_WFRACBITS_DW_Q - 1) % _FP_W_TYPE_SIZE)
|
|
|
|
typedef float TFtype __attribute__ ((mode (TF)));
|
|
|
|
#if _FP_W_TYPE_SIZE < 64
|
|
|
|
union _FP_UNION_Q
|
|
{
|
|
TFtype flt;
|
|
struct _FP_STRUCT_LAYOUT
|
|
{
|
|
# 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;
|
|
};
|
|
|
|
|
|
# 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_UNPACK_SEMIRAW_Q(X, val) \
|
|
do \
|
|
{ \
|
|
_FP_UNPACK_RAW_4 (Q, X, (val)); \
|
|
_FP_UNPACK_SEMIRAW (Q, 4, X); \
|
|
} \
|
|
while (0)
|
|
|
|
# define FP_UNPACK_SEMIRAW_QP(X, val) \
|
|
do \
|
|
{ \
|
|
_FP_UNPACK_RAW_4_P (Q, X, (val)); \
|
|
_FP_UNPACK_SEMIRAW (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_PACK_SEMIRAW_Q(val, X) \
|
|
do \
|
|
{ \
|
|
_FP_PACK_SEMIRAW (Q, 4, X); \
|
|
_FP_PACK_RAW_4 (Q, (val), X); \
|
|
} \
|
|
while (0)
|
|
|
|
# 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)
|
|
|
|
# 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_FMA_Q(R, X, Y, Z) _FP_FMA (Q, 4, 8, R, X, Y, Z)
|
|
|
|
# define FP_CMP_Q(r, X, Y, un, ex) _FP_CMP (Q, 4, (r), X, Y, (un), (ex))
|
|
# define FP_CMP_EQ_Q(r, X, Y, ex) _FP_CMP_EQ (Q, 4, (r), X, Y, (ex))
|
|
# define FP_CMP_UNORD_Q(r, X, Y, ex) _FP_CMP_UNORD (Q, 4, (r), X, Y, (ex))
|
|
|
|
# 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)
|
|
|
|
# define _FP_FRAC_HIGH_DW_Q(X) _FP_FRAC_HIGH_8 (X)
|
|
|
|
#else /* not _FP_W_TYPE_SIZE < 64 */
|
|
union _FP_UNION_Q
|
|
{
|
|
TFtype flt /* __attribute__ ((mode (TF))) */ ;
|
|
struct _FP_STRUCT_LAYOUT
|
|
{
|
|
_FP_W_TYPE a, b;
|
|
} longs;
|
|
struct _FP_STRUCT_LAYOUT
|
|
{
|
|
# 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;
|
|
};
|
|
|
|
# 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_UNPACK_SEMIRAW_Q(X, val) \
|
|
do \
|
|
{ \
|
|
_FP_UNPACK_RAW_2 (Q, X, (val)); \
|
|
_FP_UNPACK_SEMIRAW (Q, 2, X); \
|
|
} \
|
|
while (0)
|
|
|
|
# define FP_UNPACK_SEMIRAW_QP(X, val) \
|
|
do \
|
|
{ \
|
|
_FP_UNPACK_RAW_2_P (Q, X, (val)); \
|
|
_FP_UNPACK_SEMIRAW (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_PACK_SEMIRAW_Q(val, X) \
|
|
do \
|
|
{ \
|
|
_FP_PACK_SEMIRAW (Q, 2, X); \
|
|
_FP_PACK_RAW_2 (Q, (val), X); \
|
|
} \
|
|
while (0)
|
|
|
|
# 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)
|
|
|
|
# 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_FMA_Q(R, X, Y, Z) _FP_FMA (Q, 2, 4, R, X, Y, Z)
|
|
|
|
# define FP_CMP_Q(r, X, Y, un, ex) _FP_CMP (Q, 2, (r), X, Y, (un), (ex))
|
|
# define FP_CMP_EQ_Q(r, X, Y, ex) _FP_CMP_EQ (Q, 2, (r), X, Y, (ex))
|
|
# define FP_CMP_UNORD_Q(r, X, Y, ex) _FP_CMP_UNORD (Q, 2, (r), X, Y, (ex))
|
|
|
|
# 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)
|
|
|
|
# define _FP_FRAC_HIGH_DW_Q(X) _FP_FRAC_HIGH_4 (X)
|
|
|
|
#endif /* not _FP_W_TYPE_SIZE < 64 */
|
|
|
|
#endif /* !SOFT_FP_QUAD_H */
|