| Takashi YOSHII | 4b56568 | 2006-09-27 17:15:32 +0900 | [diff] [blame] | 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 | |
| Takashi YOSHII | 4b56568 | 2006-09-27 17:15:32 +0900 | [diff] [blame] | 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 | |