1 /* SPDX-License-Identifier: GPL-2.0+ 2 * 3 * Machine-dependent software floating-point definitions. 4 SuperH kernel version. 5 Copyright (C) 1997,1998,1999 Free Software Foundation, Inc. 6 This file is part of the GNU C Library. 7 Contributed by Richard Henderson (rth@cygnus.com), 8 Jakub Jelinek (jj@ultra.linux.cz), 9 David S. Miller (davem@redhat.com) and 10 Peter Maydell (pmaydell@chiark.greenend.org.uk). 11 */ 12 13 #ifndef _SFP_MACHINE_H 14 #define _SFP_MACHINE_H 15 16 #ifdef __BIG_ENDIAN__ 17 #define __BYTE_ORDER __BIG_ENDIAN 18 #define __LITTLE_ENDIAN 0 19 #else 20 #define __BYTE_ORDER __LITTLE_ENDIAN 21 #define __BIG_ENDIAN 0 22 #endif 23 24 #define _FP_W_TYPE_SIZE 32 25 #define _FP_W_TYPE unsigned long 26 #define _FP_WS_TYPE signed long 27 #define _FP_I_TYPE long 28 29 #define _FP_MUL_MEAT_S(R,X,Y) \ 30 _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm) 31 #define _FP_MUL_MEAT_D(R,X,Y) \ 32 _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm) 33 #define _FP_MUL_MEAT_Q(R,X,Y) \ 34 _FP_MUL_MEAT_4_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm) 35 36 #define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_udiv(S,R,X,Y) 37 #define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_2_udiv(D,R,X,Y) 38 #define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_4_udiv(Q,R,X,Y) 39 40 #define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1) 41 #define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1), -1 42 #define _FP_NANFRAC_Q ((_FP_QNANBIT_Q << 1) - 1), -1, -1, -1 43 #define _FP_NANSIGN_S 0 44 #define _FP_NANSIGN_D 0 45 #define _FP_NANSIGN_Q 0 46 47 #define _FP_KEEPNANFRACP 1 48 49 /* 50 * If one NaN is signaling and the other is not, 51 * we choose that one, otherwise we choose X. 52 */ 53 #define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \ 54 do { \ 55 if ((_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs) \ 56 && !(_FP_FRAC_HIGH_RAW_##fs(Y) & _FP_QNANBIT_##fs)) \ 57 { \ 58 R##_s = Y##_s; \ 59 _FP_FRAC_COPY_##wc(R,Y); \ 60 } \ 61 else \ 62 { \ 63 R##_s = X##_s; \ 64 _FP_FRAC_COPY_##wc(R,X); \ 65 } \ 66 R##_c = FP_CLS_NAN; \ 67 } while (0) 68 69 //#define FP_ROUNDMODE FPSCR_RM 70 #define FP_DENORM_ZERO 1/*FPSCR_DN*/ 71 72 /* Exception flags. */ 73 #define FP_EX_INVALID (1<<4) 74 #define FP_EX_DIVZERO (1<<3) 75 #define FP_EX_OVERFLOW (1<<2) 76 #define FP_EX_UNDERFLOW (1<<1) 77 #define FP_EX_INEXACT (1<<0) 78 79 #endif 80 81