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/* Machine-dependent software floating-point definitions.
Alpha kernel version.
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 (jakub@redhat.com) and
David S. Miller (davem@redhat.com).
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 _SFP_MACHINE_H
#define _SFP_MACHINE_H
#define _FP_W_TYPE_SIZE 64
#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_imm(_FP_WFRACBITS_S,R,X,Y)
#define _FP_MUL_MEAT_D(R,X,Y) \
_FP_MUL_MEAT_1_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm)
#define _FP_MUL_MEAT_Q(R,X,Y) \
_FP_MUL_MEAT_2_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm)
#define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_imm(S,R,X,Y,_FP_DIV_HELP_imm)
#define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_1_udiv(D,R,X,Y)
#define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_2_udiv(Q,R,X,Y)
#define _FP_NANFRAC_S _FP_QNANBIT_S
#define _FP_NANFRAC_D _FP_QNANBIT_D
#define _FP_NANFRAC_Q _FP_QNANBIT_Q
#define _FP_NANSIGN_S 1
#define _FP_NANSIGN_D 1
#define _FP_NANSIGN_Q 1
#define _FP_KEEPNANFRACP 1
/* Alpha Architecture Handbook, 4.7.10.4 sais that
* we should prefer any type of NaN in Fb, then Fa.
*/
#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \
do { \
R##_s = Y##_s; \
_FP_FRAC_COPY_##wc(R,X); \
R##_c = FP_CLS_NAN; \
} while (0)
/* Obtain the current rounding mode. */
#define FP_ROUNDMODE mode
#define FP_RND_NEAREST (FPCR_DYN_NORMAL >> FPCR_DYN_SHIFT)
#define FP_RND_ZERO (FPCR_DYN_CHOPPED >> FPCR_DYN_SHIFT)
#define FP_RND_PINF (FPCR_DYN_PLUS >> FPCR_DYN_SHIFT)
#define FP_RND_MINF (FPCR_DYN_MINUS >> FPCR_DYN_SHIFT)
/* Exception flags. */
#define FP_EX_INVALID IEEE_TRAP_ENABLE_INV
#define FP_EX_OVERFLOW IEEE_TRAP_ENABLE_OVF
#define FP_EX_UNDERFLOW IEEE_TRAP_ENABLE_UNF
#define FP_EX_DIVZERO IEEE_TRAP_ENABLE_DZE
#define FP_EX_INEXACT IEEE_TRAP_ENABLE_INE
#define FP_EX_DENORM IEEE_TRAP_ENABLE_DNO
#define FP_DENORM_ZERO (swcr & IEEE_MAP_DMZ)
/* We write the results always */
#define FP_INHIBIT_RESULTS 0
#endif