Commit | Line | Data |
---|---|---|
0a46062b | 1 | /* |
ccd7e1c8 | 2 | * float.c |
0a46062b | 3 | * |
ccd7e1c8 | 4 | * BabelTrace - Float Type Converter |
0a46062b | 5 | * |
c054553d | 6 | * Copyright 2010, 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
0a46062b | 7 | * |
ccd7e1c8 MD |
8 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
9 | * of this software and associated documentation files (the "Software"), to deal | |
10 | * in the Software without restriction, including without limitation the rights | |
11 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
12 | * copies of the Software, and to permit persons to whom the Software is | |
13 | * furnished to do so, subject to the following conditions: | |
0a46062b | 14 | * |
ccd7e1c8 MD |
15 | * The above copyright notice and this permission notice shall be included in |
16 | * all copies or substantial portions of the Software. | |
0a46062b MD |
17 | */ |
18 | ||
19 | #include <babeltrace/compiler.h> | |
4c8bfb7e | 20 | #include <babeltrace/format.h> |
0a46062b | 21 | |
c054553d MD |
22 | static |
23 | struct type_float *_float_type_new(struct type_class *type_class, | |
24 | struct declaration_scope *parent_scope); | |
25 | static | |
26 | void _float_type_free(struct type *type); | |
27 | ||
4c8bfb7e MD |
28 | void float_copy(struct stream_pos *destp, |
29 | const struct format *fdest, | |
30 | struct stream_pos *srcp, | |
31 | const struct format *fsrc, | |
c054553d | 32 | struct type *type) |
0a46062b | 33 | { |
c054553d MD |
34 | struct type_float *_float = container_of(type, struct type_float, p); |
35 | struct type_class_float *float_class = _float->_class; | |
0a46062b MD |
36 | |
37 | if (fsrc->float_copy == fdest->float_copy) { | |
4c8bfb7e | 38 | fsrc->float_copy(destp, srcp, float_class); |
0a46062b MD |
39 | } else { |
40 | double v; | |
41 | ||
4c8bfb7e MD |
42 | v = fsrc->double_read(srcp, float_class); |
43 | fdest->double_write(destp, float_class, v); | |
0a46062b MD |
44 | } |
45 | } | |
46 | ||
c054553d MD |
47 | static |
48 | void _float_type_class_free(struct type_class *type_class) | |
90b676d7 MD |
49 | { |
50 | struct type_class_float *float_class = | |
51 | container_of(type_class, struct type_class_float, p); | |
c054553d MD |
52 | |
53 | type_class_unref(&float_class->exp->p); | |
54 | type_class_unref(&float_class->mantissa->p); | |
55 | type_class_unref(&float_class->sign->p); | |
56 | g_free(float_class); | |
90b676d7 MD |
57 | } |
58 | ||
c054553d MD |
59 | struct type_class_float * |
60 | float_type_class_new(const char *name, size_t mantissa_len, | |
61 | size_t exp_len, int byte_order, size_t alignment) | |
0a46062b MD |
62 | { |
63 | struct type_class_float *float_class; | |
bed864a7 | 64 | struct type_class *type_class; |
0a46062b MD |
65 | int ret; |
66 | ||
0a46062b | 67 | float_class = g_new(struct type_class_float, 1); |
bed864a7 | 68 | type_class = &float_class->p; |
bed864a7 MD |
69 | type_class->name = g_quark_from_string(name); |
70 | type_class->alignment = alignment; | |
71 | type_class->copy = float_copy; | |
c054553d MD |
72 | type_class->class_free = _float_type_class_free; |
73 | type_class->type_new = _float_type_new; | |
74 | type_class->type_free = _float_type_free; | |
4c8bfb7e | 75 | type_class->ref = 1; |
0a46062b | 76 | float_class->byte_order = byte_order; |
bed864a7 | 77 | |
7fe00194 MD |
78 | float_class->sign = integer_type_new(NULL, 1, |
79 | byte_order, false, 1); | |
11d43b90 MD |
80 | if (!float_class->mantissa) |
81 | goto error_sign; | |
7fe00194 MD |
82 | float_class->mantissa = integer_type_new(NULL, mantissa_len - 1, |
83 | byte_order, false, 1); | |
bed864a7 MD |
84 | if (!float_class->mantissa) |
85 | goto error_mantissa; | |
7fe00194 MD |
86 | float_class->exp = integer_type_new(NULL, exp_len, |
87 | byte_order, true, 1); | |
bed864a7 MD |
88 | if (!float_class->exp) |
89 | goto error_exp; | |
90 | ||
0a46062b | 91 | if (float_class->p.name) { |
be85c1c7 | 92 | ret = register_type(&float_class->p); |
bed864a7 MD |
93 | if (ret) |
94 | goto error_register; | |
0a46062b MD |
95 | } |
96 | return float_class; | |
bed864a7 MD |
97 | |
98 | error_register: | |
c054553d | 99 | type_class_unref(&float_class->exp->p); |
bed864a7 | 100 | error_exp: |
c054553d | 101 | type_class_unref(&float_class->mantissa->p); |
bed864a7 | 102 | error_mantissa: |
c054553d | 103 | type_class_unref(&float_class->sign->p); |
11d43b90 | 104 | error_sign: |
bed864a7 MD |
105 | g_free(float_class); |
106 | return NULL; | |
0a46062b | 107 | } |
c054553d MD |
108 | |
109 | static | |
110 | struct type_float *_float_type_new(struct type_class *type_class, | |
111 | struct declaration_scope *parent_scope) | |
112 | { | |
113 | struct type_class_float *float_class = | |
114 | container_of(type_class, struct type_class_float, p); | |
115 | struct type_float *_float; | |
116 | ||
117 | _float = g_new(struct type_float, 1); | |
118 | type_class_ref(&_float_class->p); | |
119 | _float->p._class = _float_class; | |
120 | _float->p.ref = 1; | |
121 | _float->value = 0.0; | |
122 | return &_float->p; | |
123 | } | |
124 | ||
125 | static | |
126 | void _float_type_free(struct type *type) | |
127 | { | |
128 | struct type_float *_float = container_of(type, struct type_float, p); | |
129 | ||
130 | type_class_unref(_float->p._class); | |
131 | g_free(_float); | |
132 | } |