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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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