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d16aafd8 | 1 | /* Floating point definitions for GDB. |
f1908289 AC |
2 | |
3 | Copyright 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, | |
4 | 1996, 1997, 1998, 1999, 2000, 2001, 2003 Free Software Foundation, | |
5 | Inc. | |
d16aafd8 AC |
6 | |
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
23 | ||
24 | #ifndef DOUBLEST_H | |
25 | #define DOUBLEST_H | |
26 | ||
da3331ec | 27 | struct type; |
5ef2d0aa | 28 | struct floatformat; |
da3331ec | 29 | |
d16aafd8 AC |
30 | /* Setup definitions for host and target floating point formats. We need to |
31 | consider the format for `float', `double', and `long double' for both target | |
32 | and host. We need to do this so that we know what kind of conversions need | |
33 | to be done when converting target numbers to and from the hosts DOUBLEST | |
34 | data type. */ | |
35 | ||
36 | /* This is used to indicate that we don't know the format of the floating point | |
37 | number. Typically, this is useful for native ports, where the actual format | |
38 | is irrelevant, since no conversions will be taking place. */ | |
39 | ||
40 | #include "floatformat.h" /* For struct floatformat */ | |
41 | ||
d16aafd8 AC |
42 | /* Use `long double' if the host compiler supports it. (Note that this is not |
43 | necessarily any longer than `double'. On SunOS/gcc, it's the same as | |
44 | double.) This is necessary because GDB internally converts all floating | |
45 | point values to the widest type supported by the host. | |
46 | ||
47 | There are problems however, when the target `long double' is longer than the | |
48 | host's `long double'. In general, we'll probably reduce the precision of | |
49 | any such values and print a warning. */ | |
50 | ||
51 | #ifdef HAVE_LONG_DOUBLE | |
52 | typedef long double DOUBLEST; | |
53 | #else | |
54 | typedef double DOUBLEST; | |
55 | #endif | |
56 | ||
57 | extern void floatformat_to_doublest (const struct floatformat *, | |
64f6fcad | 58 | const void *in, DOUBLEST *out); |
d16aafd8 | 59 | extern void floatformat_from_doublest (const struct floatformat *, |
64f6fcad | 60 | const DOUBLEST *in, void *out); |
d16aafd8 AC |
61 | |
62 | extern int floatformat_is_negative (const struct floatformat *, char *); | |
63 | extern int floatformat_is_nan (const struct floatformat *, char *); | |
64 | extern char *floatformat_mantissa (const struct floatformat *, char *); | |
65 | ||
f1908289 AC |
66 | /* These functions have been replaced by extract_typed_floating and |
67 | store_typed_floating. | |
68 | ||
69 | Most calls are passing in TYPE_LENGTH (TYPE) so can be changed to | |
70 | just pass the TYPE. The remainder pass in the length of a | |
71 | register, those calls should instead pass in the floating point | |
72 | type that corresponds to that length. */ | |
87ffba60 | 73 | |
f1908289 AC |
74 | extern DOUBLEST deprecated_extract_floating (const void *addr, int len); |
75 | extern void deprecated_store_floating (void *addr, int len, DOUBLEST val); | |
96d2f608 | 76 | |
c2f05ac9 AC |
77 | /* Given TYPE, return its floatformat. TYPE_FLOATFORMAT() may return |
78 | NULL. type_floatformat() detects that and returns a floatformat | |
79 | based on the type size when FLOATFORMAT is NULL. */ | |
80 | ||
81 | const struct floatformat *floatformat_from_type (const struct type *type); | |
82 | ||
96d2f608 AC |
83 | extern DOUBLEST extract_typed_floating (const void *addr, |
84 | const struct type *type); | |
85 | extern void store_typed_floating (void *addr, const struct type *type, | |
86 | DOUBLEST val); | |
43686d64 MK |
87 | extern void convert_typed_floating (const void *from, |
88 | const struct type *from_type, | |
89 | void *to, const struct type *to_type); | |
d16aafd8 | 90 | |
5ef2d0aa AC |
91 | /* Table of convenient float-formats. */ |
92 | extern const struct floatformat *floatformat_ieee_single[BFD_ENDIAN_UNKNOWN]; | |
93 | extern const struct floatformat *floatformat_ieee_double[BFD_ENDIAN_UNKNOWN]; | |
94 | extern const struct floatformat *floatformat_arm_ext[BFD_ENDIAN_UNKNOWN]; | |
95 | extern const struct floatformat *floatformat_ia64_spill[BFD_ENDIAN_UNKNOWN]; | |
96 | extern const struct floatformat *floatformat_ia64_quad[BFD_ENDIAN_UNKNOWN]; | |
97 | ||
d16aafd8 | 98 | #endif |