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
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