1  /* Soft-FP definitions for Altera Nios II.
       2     Copyright (C) 2013-2023 Free Software Foundation, Inc.
       3  
       4  This file is free software; you can redistribute it and/or modify it
       5  under the terms of the GNU General Public License as published by the
       6  Free Software Foundation; either version 3, or (at your option) any
       7  later version.
       8  
       9  This file is distributed in the hope that it will be useful, but
      10  WITHOUT ANY WARRANTY; without even the implied warranty of
      11  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12  General Public License for more details.
      13  
      14  Under Section 7 of GPL version 3, you are granted additional
      15  permissions described in the GCC Runtime Library Exception, version
      16  3.1, as published by the Free Software Foundation.
      17  
      18  You should have received a copy of the GNU General Public License and
      19  a copy of the GCC Runtime Library Exception along with this program;
      20  see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
      21  <http://www.gnu.org/licenses/>.  */
      22  
      23  #define _FP_W_TYPE_SIZE		32
      24  #define _FP_W_TYPE		unsigned long
      25  #define _FP_WS_TYPE		signed long
      26  #define _FP_I_TYPE		long
      27  
      28  #define _FP_MUL_MEAT_S(R,X,Y)				\
      29    _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm)
      30  #define _FP_MUL_MEAT_D(R,X,Y)				\
      31    _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm)
      32  #define _FP_MUL_MEAT_Q(R,X,Y)				\
      33    _FP_MUL_MEAT_4_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm)
      34  
      35  #define _FP_DIV_MEAT_S(R,X,Y)	_FP_DIV_MEAT_1_loop(S,R,X,Y)
      36  #define _FP_DIV_MEAT_D(R,X,Y)	_FP_DIV_MEAT_2_udiv(D,R,X,Y)
      37  #define _FP_DIV_MEAT_Q(R,X,Y)	_FP_DIV_MEAT_4_udiv(Q,R,X,Y)
      38  
      39  #define _FP_NANFRAC_S		((_FP_QNANBIT_S << 1) - 1)
      40  #define _FP_NANFRAC_D		((_FP_QNANBIT_D << 1) - 1), -1
      41  #define _FP_NANFRAC_Q		((_FP_QNANBIT_Q << 1) - 1), -1, -1, -1
      42  #define _FP_NANSIGN_S		0
      43  #define _FP_NANSIGN_D		0
      44  #define _FP_NANSIGN_Q		0
      45  
      46  #define _FP_KEEPNANFRACP 1
      47  #define _FP_QNANNEGATEDP 0
      48  
      49  /* Someone please check this.  */
      50  #define _FP_CHOOSENAN(fs, wc, R, X, Y, OP)			\
      51    do {								\
      52      if ((_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs)		\
      53  	&& !(_FP_FRAC_HIGH_RAW_##fs(Y) & _FP_QNANBIT_##fs))	\
      54        {								\
      55  	R##_s = Y##_s;						\
      56  	_FP_FRAC_COPY_##wc(R,Y);				\
      57        }								\
      58      else							\
      59        {								\
      60  	R##_s = X##_s;						\
      61  	_FP_FRAC_COPY_##wc(R,X);				\
      62        }								\
      63      R##_c = FP_CLS_NAN;						\
      64    } while (0)
      65  
      66  /* Not checked.  */
      67  #define _FP_TININESS_AFTER_ROUNDING 0
      68  
      69  #define	__LITTLE_ENDIAN	1234
      70  #define	__BIG_ENDIAN	4321
      71  
      72  #ifdef __nios2_little_endian__
      73  #define __BYTE_ORDER __LITTLE_ENDIAN
      74  #else
      75  #define __BYTE_ORDER __BIG_ENDIAN
      76  #endif
      77  
      78  /* Define ALIASNAME as a strong alias for NAME.  */
      79  # define strong_alias(name, aliasname) _strong_alias(name, aliasname)
      80  # define _strong_alias(name, aliasname) \
      81    extern __typeof (name) aliasname __attribute__ ((alias (#name)));