mirror of
https://github.com/autc04/Retro68.git
synced 2024-12-11 19:49:32 +00:00
82 lines
2.7 KiB
C
82 lines
2.7 KiB
C
/* Soft-FP definitions for Altera Nios II.
|
|
Copyright (C) 2013-2016 Free Software Foundation, Inc.
|
|
|
|
This file is free software; you can redistribute it and/or modify it
|
|
under the terms of the GNU General Public License as published by the
|
|
Free Software Foundation; either version 3, or (at your option) any
|
|
later version.
|
|
|
|
This file 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
|
|
General Public License for more details.
|
|
|
|
Under Section 7 of GPL version 3, you are granted additional
|
|
permissions described in the GCC Runtime Library Exception, version
|
|
3.1, as published by the Free Software Foundation.
|
|
|
|
You should have received a copy of the GNU General Public License and
|
|
a copy of the GCC Runtime Library Exception along with this program;
|
|
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#define _FP_W_TYPE_SIZE 32
|
|
#define _FP_W_TYPE unsigned long
|
|
#define _FP_WS_TYPE signed long
|
|
#define _FP_I_TYPE long
|
|
|
|
#define _FP_MUL_MEAT_S(R,X,Y) \
|
|
_FP_MUL_MEAT_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm)
|
|
#define _FP_MUL_MEAT_D(R,X,Y) \
|
|
_FP_MUL_MEAT_2_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm)
|
|
#define _FP_MUL_MEAT_Q(R,X,Y) \
|
|
_FP_MUL_MEAT_4_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm)
|
|
|
|
#define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_loop(S,R,X,Y)
|
|
#define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_2_udiv(D,R,X,Y)
|
|
#define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_4_udiv(Q,R,X,Y)
|
|
|
|
#define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1)
|
|
#define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1), -1
|
|
#define _FP_NANFRAC_Q ((_FP_QNANBIT_Q << 1) - 1), -1, -1, -1
|
|
#define _FP_NANSIGN_S 0
|
|
#define _FP_NANSIGN_D 0
|
|
#define _FP_NANSIGN_Q 0
|
|
|
|
#define _FP_KEEPNANFRACP 1
|
|
#define _FP_QNANNEGATEDP 0
|
|
|
|
/* Someone please check this. */
|
|
#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \
|
|
do { \
|
|
if ((_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs) \
|
|
&& !(_FP_FRAC_HIGH_RAW_##fs(Y) & _FP_QNANBIT_##fs)) \
|
|
{ \
|
|
R##_s = Y##_s; \
|
|
_FP_FRAC_COPY_##wc(R,Y); \
|
|
} \
|
|
else \
|
|
{ \
|
|
R##_s = X##_s; \
|
|
_FP_FRAC_COPY_##wc(R,X); \
|
|
} \
|
|
R##_c = FP_CLS_NAN; \
|
|
} while (0)
|
|
|
|
/* Not checked. */
|
|
#define _FP_TININESS_AFTER_ROUNDING 0
|
|
|
|
#define __LITTLE_ENDIAN 1234
|
|
#define __BIG_ENDIAN 4321
|
|
|
|
#ifdef __nios2_little_endian__
|
|
#define __BYTE_ORDER __LITTLE_ENDIAN
|
|
#else
|
|
#define __BYTE_ORDER __BIG_ENDIAN
|
|
#endif
|
|
|
|
/* Define ALIASNAME as a strong alias for NAME. */
|
|
# define strong_alias(name, aliasname) _strong_alias(name, aliasname)
|
|
# define _strong_alias(name, aliasname) \
|
|
extern __typeof (name) aliasname __attribute__ ((alias (#name)));
|