Definition scope: update
[babeltrace.git] / types / float.c
CommitLineData
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 *
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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 *
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15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
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17 */
18
19#include <babeltrace/compiler.h>
4c8bfb7e 20#include <babeltrace/format.h>
0a46062b 21
c054553d 22static
f6625916 23struct definition *_float_definition_new(struct declaration *declaration,
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24 struct definition_scope *parent_scope,
25 GQuark field_name, int index);
c054553d 26static
e1151715 27void _float_definition_free(struct definition *definition);
c054553d 28
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29void float_copy(struct stream_pos *destp,
30 const struct format *fdest,
31 struct stream_pos *srcp,
32 const struct format *fsrc,
e1151715 33 struct definition *definition)
0a46062b 34{
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35 struct definition_float *_float =
36 container_of(definition, struct definition_float, p);
f6625916 37 struct declaration_float *float_declaration = _float->declaration;
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38
39 if (fsrc->float_copy == fdest->float_copy) {
f6625916 40 fsrc->float_copy(destp, srcp, float_declaration);
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41 } else {
42 double v;
43
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44 v = fsrc->double_read(srcp, float_declaration);
45 fdest->double_write(destp, float_declaration, v);
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46 }
47}
48
c054553d 49static
f6625916 50void _float_declaration_free(struct declaration *declaration)
90b676d7 51{
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52 struct declaration_float *float_declaration =
53 container_of(declaration, struct declaration_float, p);
c054553d 54
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55 declaration_unref(&float_declaration->exp->p);
56 declaration_unref(&float_declaration->mantissa->p);
57 declaration_unref(&float_declaration->sign->p);
58 g_free(float_declaration);
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59}
60
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61struct declaration_float *
62 float_declaration_new(const char *name, size_t mantissa_len,
e19c3d69 63 size_t exp_len, int byte_order, size_t alignment)
0a46062b 64{
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65 struct declaration_float *float_declaration;
66 struct declaration *declaration;
0a46062b 67
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68 float_declaration = g_new(struct declaration_float, 1);
69 declaration = &float_declaration->p;
70 declaration->id = CTF_TYPE_FLOAT;
71 declaration->name = g_quark_from_string(name);
72 declaration->alignment = alignment;
73 declaration->copy = float_copy;
74 declaration->declaration_free = _float_declaration_free;
75 declaration->definition_new = _float_definition_new;
76 declaration->definition_free = _float_definition_free;
77 declaration->ref = 1;
78 float_declaration->byte_order = byte_order;
e19c3d69 79
f6625916 80 float_declaration->sign = integer_declaration_new(NULL, 1,
e19c3d69 81 byte_order, false, 1);
f6625916 82 float_declaration->mantissa = integer_declaration_new(NULL, mantissa_len - 1,
e19c3d69 83 byte_order, false, 1);
f6625916 84 float_declaration->exp = integer_declaration_new(NULL, exp_len,
e19c3d69 85 byte_order, true, 1);
f6625916 86 return float_declaration;
0a46062b 87}
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88
89static
e1151715 90struct definition *
f6625916 91 _float_definition_new(struct declaration *declaration,
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92 struct definition_scope *parent_scope,
93 GQuark field_name, int index)
c054553d 94{
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95 struct declaration_float *float_declaration =
96 container_of(declaration, struct declaration_float, p);
e1151715 97 struct definition_float *_float;
c054553d 98
e1151715 99 _float = g_new(struct definition_float, 1);
f6625916 100 declaration_ref(&float_declaration->p);
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101 _float->p.declaration = declaration;
102 _float->declaration = float_declaration;
c054553d 103 _float->p.ref = 1;
05c749e5 104 _float->p.index = index;
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105 _float->value = 0.0;
106 return &_float->p;
107}
108
109static
e1151715 110void _float_definition_free(struct definition *definition)
c054553d 111{
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112 struct definition_float *_float =
113 container_of(definition, struct definition_float, p);
c054553d 114
f6625916 115 declaration_unref(_float->p.declaration);
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116 g_free(_float);
117}
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