Mercurial > hg > CbC > CbC_gcc
annotate libdecnumber/decSingle.h @ 158:494b0b89df80 default tip
...
author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
---|---|
date | Mon, 25 May 2020 18:13:55 +0900 |
parents | 1830386684a0 |
children |
rev | line source |
---|---|
0 | 1 /* decSingle module header for the decNumber C Library. |
145 | 2 Copyright (C) 2005-2020 Free Software Foundation, Inc. |
0 | 3 Contributed by IBM Corporation. Author Mike Cowlishaw. |
4 | |
5 This file is part of GCC. | |
6 | |
7 GCC is free software; you can redistribute it and/or modify it under | |
8 the terms of the GNU General Public License as published by the Free | |
9 Software Foundation; either version 3, or (at your option) any later | |
10 version. | |
11 | |
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 for more details. | |
16 | |
17 Under Section 7 of GPL version 3, you are granted additional | |
18 permissions described in the GCC Runtime Library Exception, version | |
19 3.1, as published by the Free Software Foundation. | |
20 | |
21 You should have received a copy of the GNU General Public License and | |
22 a copy of the GCC Runtime Library Exception along with this program; | |
23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
24 <http://www.gnu.org/licenses/>. */ | |
25 | |
26 /* ------------------------------------------------------------------ */ | |
27 /* decSingle.h -- Decimal 32-bit format module header */ | |
28 /* ------------------------------------------------------------------ */ | |
29 | |
30 #if !defined(DECSINGLE) | |
31 #define DECSINGLE | |
32 | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
33 #define DECSINGLENAME "decSingle" /* Short name */ |
0 | 34 #define DECSINGLETITLE "Decimal 32-bit datum" /* Verbose name */ |
35 #define DECSINGLEAUTHOR "Mike Cowlishaw" /* Who to blame */ | |
36 | |
37 /* parameters for decSingles */ | |
38 #define DECSINGLE_Bytes 4 /* length */ | |
39 #define DECSINGLE_Pmax 7 /* maximum precision (digits) */ | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
40 #define DECSINGLE_Emin -95 /* minimum adjusted exponent */ |
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
41 #define DECSINGLE_Emax 96 /* maximum adjusted exponent */ |
0 | 42 #define DECSINGLE_EmaxD 3 /* maximum exponent digits */ |
43 #define DECSINGLE_Bias 101 /* bias for the exponent */ | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
44 #define DECSINGLE_String 16 /* maximum string length, +1 */ |
0 | 45 #define DECSINGLE_EconL 6 /* exponent continuation length */ |
46 #define DECSINGLE_Declets 2 /* count of declets */ | |
47 /* highest biased exponent (Elimit-1) */ | |
48 #define DECSINGLE_Ehigh (DECSINGLE_Emax + DECSINGLE_Bias - (DECSINGLE_Pmax-1)) | |
49 | |
50 /* Required includes */ | |
51 #include "decContext.h" | |
52 #include "decQuad.h" | |
53 #include "decDouble.h" | |
54 | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
55 /* The decSingle decimal 32-bit type, accessible by all sizes */ |
0 | 56 typedef union { |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
57 uint8_t bytes[DECSINGLE_Bytes]; /* fields: 1, 5, 6, 20 bits */ |
0 | 58 uint16_t shorts[DECSINGLE_Bytes/2]; |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
59 uint32_t words[DECSINGLE_Bytes/4]; |
0 | 60 } decSingle; |
61 | |
62 /* ---------------------------------------------------------------- */ | |
63 /* Routines -- implemented as decFloat routines in common files */ | |
64 /* ---------------------------------------------------------------- */ | |
65 | |
66 #include "decSingleSymbols.h" | |
67 | |
68 /* Utilities (binary argument(s) or result, extractors, etc.) */ | |
69 extern decSingle * decSingleFromBCD(decSingle *, int32_t, const uint8_t *, int32_t); | |
70 extern decSingle * decSingleFromPacked(decSingle *, int32_t, const uint8_t *); | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
71 extern decSingle * decSingleFromPackedChecked(decSingle *, int32_t, const uint8_t *); |
0 | 72 extern decSingle * decSingleFromString(decSingle *, const char *, decContext *); |
73 extern decSingle * decSingleFromWider(decSingle *, const decDouble *, decContext *); | |
74 extern int32_t decSingleGetCoefficient(const decSingle *, uint8_t *); | |
75 extern int32_t decSingleGetExponent(const decSingle *); | |
76 extern decSingle * decSingleSetCoefficient(decSingle *, const uint8_t *, int32_t); | |
77 extern decSingle * decSingleSetExponent(decSingle *, decContext *, int32_t); | |
78 extern void decSingleShow(const decSingle *, const char *); | |
79 extern int32_t decSingleToBCD(const decSingle *, int32_t *, uint8_t *); | |
80 extern char * decSingleToEngString(const decSingle *, char *); | |
81 extern int32_t decSingleToPacked(const decSingle *, int32_t *, uint8_t *); | |
82 extern char * decSingleToString(const decSingle *, char *); | |
83 extern decDouble * decSingleToWider(const decSingle *, decDouble *); | |
84 extern decSingle * decSingleZero(decSingle *); | |
85 | |
86 /* (No Arithmetic routines for decSingle) */ | |
87 | |
88 /* Non-computational */ | |
89 extern uint32_t decSingleRadix(const decSingle *); | |
90 extern const char * decSingleVersion(void); | |
91 | |
92 /* decNumber conversions; these are implemented as macros so as not */ | |
93 /* to force a dependency on decimal32 and decNumber in decSingle. */ | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
94 /* decSingleFromNumber returns a decimal32 * to avoid warnings. */ |
0 | 95 #define decSingleToNumber(dq, dn) decimal32ToNumber((decimal32 *)(dq), dn) |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
96 #define decSingleFromNumber(dq, dn, set) decimal32FromNumber((decimal32 *)(dq), dn, set) |
0 | 97 |
98 #endif |