1 /* Machine-dependent software floating-point definitions. 2 SuperH kernel version. 3 Copyright (C) 1997,1998,1999 Free Software Foundation, Inc. 4 This file is part of the GNU C Library. 5 Contributed by Richard Henderson (rth@cygnus.com), 6 Jakub Jelinek (jj@ultra.linux.cz), 7 David S. Miller (davem@redhat.com) and 8 Peter Maydell (pmaydell@chiark.greenend.org.uk). 9 10 The GNU C Library is free software; you can redistribute it and/or 11 modify it under the terms of the GNU Library General Public License as 12 published by the Free Software Foundation; either version 2 of the 13 License, or (at your option) any later version. 14 15 The GNU C Library is distributed in the hope that it will be useful, 16 but WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18 Library General Public License for more details. 19 20 You should have received a copy of the GNU Library General Public 21 License along with the GNU C Library; see the file COPYING.LIB. If 22 not, write to the Free Software Foundation, Inc., 23 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 24 25 #ifndef _SFP_MACHINE_H 26 #define _SFP_MACHINE_H 27 28 #define _FP_W_TYPE_SIZE 32 29 #define _FP_W_TYPE unsigned long 30 #define _FP_WS_TYPE signed long 31 #define _FP_I_TYPE long 32 33 #define _FP_MUL_MEAT_S(R,X,Y) \ 34 _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm) 35 #define _FP_MUL_MEAT_D(R,X,Y) \ 36 _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm) 37 #define _FP_MUL_MEAT_Q(R,X,Y) \ 38 _FP_MUL_MEAT_4_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm) 39 40 #define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_udiv(S,R,X,Y) 41 #define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_2_udiv(D,R,X,Y) 42 #define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_4_udiv(Q,R,X,Y) 43 44 #define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1) 45 #define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1), -1 46 #define _FP_NANFRAC_Q ((_FP_QNANBIT_Q << 1) - 1), -1, -1, -1 47 #define _FP_NANSIGN_S 0 48 #define _FP_NANSIGN_D 0 49 #define _FP_NANSIGN_Q 0 50 51 #define _FP_KEEPNANFRACP 1 52 53 /* 54 * If one NaN is signaling and the other is not, 55 * we choose that one, otherwise we choose X. 56 */ 57 #define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \ 58 do { \ 59 if ((_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs) \ 60 && !(_FP_FRAC_HIGH_RAW_##fs(Y) & _FP_QNANBIT_##fs)) \ 61 { \ 62 R##_s = Y##_s; \ 63 _FP_FRAC_COPY_##wc(R,Y); \ 64 } \ 65 else \ 66 { \ 67 R##_s = X##_s; \ 68 _FP_FRAC_COPY_##wc(R,X); \ 69 } \ 70 R##_c = FP_CLS_NAN; \ 71 } while (0) 72 73 //#define FP_ROUNDMODE FPSCR_RM 74 #define FP_DENORM_ZERO 1/*FPSCR_DN*/ 75 76 /* Exception flags. */ 77 #define FP_EX_INVALID (1<<4) 78 #define FP_EX_DIVZERO (1<<3) 79 #define FP_EX_OVERFLOW (1<<2) 80 #define FP_EX_UNDERFLOW (1<<1) 81 #define FP_EX_INEXACT (1<<0) 82 83 #endif 84 85