1*4882a593Smuzhiyun /* Machine-dependent software floating-point definitions. 2*4882a593Smuzhiyun Alpha kernel version. 3*4882a593Smuzhiyun Copyright (C) 1997,1998,1999 Free Software Foundation, Inc. 4*4882a593Smuzhiyun This file is part of the GNU C Library. 5*4882a593Smuzhiyun Contributed by Richard Henderson (rth@cygnus.com), 6*4882a593Smuzhiyun Jakub Jelinek (jakub@redhat.com) and 7*4882a593Smuzhiyun David S. Miller (davem@redhat.com). 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun The GNU C Library is free software; you can redistribute it and/or 10*4882a593Smuzhiyun modify it under the terms of the GNU Library General Public License as 11*4882a593Smuzhiyun published by the Free Software Foundation; either version 2 of the 12*4882a593Smuzhiyun License, or (at your option) any later version. 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun The GNU C Library is distributed in the hope that it will be useful, 15*4882a593Smuzhiyun but WITHOUT ANY WARRANTY; without even the implied warranty of 16*4882a593Smuzhiyun MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 17*4882a593Smuzhiyun Library General Public License for more details. 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun You should have received a copy of the GNU Library General Public 20*4882a593Smuzhiyun License along with the GNU C Library; see the file COPYING.LIB. If 21*4882a593Smuzhiyun not, write to the Free Software Foundation, Inc., 22*4882a593Smuzhiyun 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun #ifndef _SFP_MACHINE_H 25*4882a593Smuzhiyun #define _SFP_MACHINE_H 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun #define _FP_W_TYPE_SIZE 64 28*4882a593Smuzhiyun #define _FP_W_TYPE unsigned long 29*4882a593Smuzhiyun #define _FP_WS_TYPE signed long 30*4882a593Smuzhiyun #define _FP_I_TYPE long 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun #define _FP_MUL_MEAT_S(R,X,Y) \ 33*4882a593Smuzhiyun _FP_MUL_MEAT_1_imm(_FP_WFRACBITS_S,R,X,Y) 34*4882a593Smuzhiyun #define _FP_MUL_MEAT_D(R,X,Y) \ 35*4882a593Smuzhiyun _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm) 36*4882a593Smuzhiyun #define _FP_MUL_MEAT_Q(R,X,Y) \ 37*4882a593Smuzhiyun _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm) 38*4882a593Smuzhiyun 39*4882a593Smuzhiyun #define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_imm(S,R,X,Y,_FP_DIV_HELP_imm) 40*4882a593Smuzhiyun #define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_1_udiv(D,R,X,Y) 41*4882a593Smuzhiyun #define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_2_udiv(Q,R,X,Y) 42*4882a593Smuzhiyun 43*4882a593Smuzhiyun #define _FP_NANFRAC_S _FP_QNANBIT_S 44*4882a593Smuzhiyun #define _FP_NANFRAC_D _FP_QNANBIT_D 45*4882a593Smuzhiyun #define _FP_NANFRAC_Q _FP_QNANBIT_Q 46*4882a593Smuzhiyun #define _FP_NANSIGN_S 1 47*4882a593Smuzhiyun #define _FP_NANSIGN_D 1 48*4882a593Smuzhiyun #define _FP_NANSIGN_Q 1 49*4882a593Smuzhiyun 50*4882a593Smuzhiyun #define _FP_KEEPNANFRACP 1 51*4882a593Smuzhiyun 52*4882a593Smuzhiyun /* Alpha Architecture Handbook, 4.7.10.4 sais that 53*4882a593Smuzhiyun * we should prefer any type of NaN in Fb, then Fa. 54*4882a593Smuzhiyun */ 55*4882a593Smuzhiyun #define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \ 56*4882a593Smuzhiyun do { \ 57*4882a593Smuzhiyun R##_s = Y##_s; \ 58*4882a593Smuzhiyun _FP_FRAC_COPY_##wc(R,X); \ 59*4882a593Smuzhiyun R##_c = FP_CLS_NAN; \ 60*4882a593Smuzhiyun } while (0) 61*4882a593Smuzhiyun 62*4882a593Smuzhiyun /* Obtain the current rounding mode. */ 63*4882a593Smuzhiyun #define FP_ROUNDMODE mode 64*4882a593Smuzhiyun #define FP_RND_NEAREST (FPCR_DYN_NORMAL >> FPCR_DYN_SHIFT) 65*4882a593Smuzhiyun #define FP_RND_ZERO (FPCR_DYN_CHOPPED >> FPCR_DYN_SHIFT) 66*4882a593Smuzhiyun #define FP_RND_PINF (FPCR_DYN_PLUS >> FPCR_DYN_SHIFT) 67*4882a593Smuzhiyun #define FP_RND_MINF (FPCR_DYN_MINUS >> FPCR_DYN_SHIFT) 68*4882a593Smuzhiyun 69*4882a593Smuzhiyun /* Exception flags. */ 70*4882a593Smuzhiyun #define FP_EX_INVALID IEEE_TRAP_ENABLE_INV 71*4882a593Smuzhiyun #define FP_EX_OVERFLOW IEEE_TRAP_ENABLE_OVF 72*4882a593Smuzhiyun #define FP_EX_UNDERFLOW IEEE_TRAP_ENABLE_UNF 73*4882a593Smuzhiyun #define FP_EX_DIVZERO IEEE_TRAP_ENABLE_DZE 74*4882a593Smuzhiyun #define FP_EX_INEXACT IEEE_TRAP_ENABLE_INE 75*4882a593Smuzhiyun #define FP_EX_DENORM IEEE_TRAP_ENABLE_DNO 76*4882a593Smuzhiyun 77*4882a593Smuzhiyun #define FP_DENORM_ZERO (swcr & IEEE_MAP_DMZ) 78*4882a593Smuzhiyun 79*4882a593Smuzhiyun /* We write the results always */ 80*4882a593Smuzhiyun #define FP_INHIBIT_RESULTS 0 81*4882a593Smuzhiyun 82*4882a593Smuzhiyun #endif 83