1/*
2 * Copyright (C) 2008 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17/* ---- includes ----------------------------------------------------------- */
18
19#include "b_TensorEm/Int16Vec3D.h"
20#include "b_BasicEm/Functions.h"
21#include "b_BasicEm/Math.h"
22#include "b_BasicEm/Memory.h"
23
24/* ------------------------------------------------------------------------- */
25
26/* ========================================================================= */
27/*                                                                           */
28/* ---- \ghd{ auxiliary functions } ---------------------------------------- */
29/*                                                                           */
30/* ========================================================================= */
31
32/* ------------------------------------------------------------------------- */
33
34/* ========================================================================= */
35/*                                                                           */
36/* ---- \ghd{ constructor / destructor } ----------------------------------- */
37/*                                                                           */
38/* ========================================================================= */
39
40/* ------------------------------------------------------------------------- */
41
42/* ========================================================================= */
43/*                                                                           */
44/* ---- \ghd{ operators } -------------------------------------------------- */
45/*                                                                           */
46/* ========================================================================= */
47
48/* ------------------------------------------------------------------------- */
49
50/* ========================================================================= */
51/*                                                                           */
52/* ---- \ghd{ query functions } -------------------------------------------- */
53/*                                                                           */
54/* ========================================================================= */
55
56/* ------------------------------------------------------------------------- */
57
58/* ========================================================================= */
59/*                                                                           */
60/* ---- \ghd{ modify functions } ------------------------------------------- */
61/*                                                                           */
62/* ========================================================================= */
63
64/* ------------------------------------------------------------------------- */
65
66/* ========================================================================= */
67/*                                                                           */
68/* ---- \ghd{ I/O } -------------------------------------------------------- */
69/*                                                                           */
70/* ========================================================================= */
71
72/* ------------------------------------------------------------------------- */
73
74uint32 bts_Int16Vec3D_memSize( struct bbs_Context* cpA,
75							   const struct bts_Int16Vec3D *ptrA )
76{
77	return bbs_SIZEOF16( struct bts_Int16Vec3D );
78}
79
80/* ------------------------------------------------------------------------- */
81
82uint32 bts_Int16Vec3D_memWrite( struct bbs_Context* cpA,
83							    const struct bts_Int16Vec3D* ptrA,
84								uint16* memPtrA )
85{
86	memPtrA += bbs_memWrite16( &ptrA->xE, memPtrA );
87	memPtrA += bbs_memWrite16( &ptrA->yE, memPtrA );
88	memPtrA += bbs_memWrite16( &ptrA->zE, memPtrA );
89	return bbs_SIZEOF16( *ptrA );
90}
91
92/* ------------------------------------------------------------------------- */
93
94uint32 bts_Int16Vec3D_memRead( struct bbs_Context* cpA,
95							   struct bts_Int16Vec3D* ptrA,
96							   const uint16* memPtrA )
97{
98	if( bbs_Context_error( cpA ) ) return 0;
99	memPtrA += bbs_memRead16( &ptrA->xE, memPtrA );
100	memPtrA += bbs_memRead16( &ptrA->yE, memPtrA );
101	memPtrA += bbs_memRead16( &ptrA->zE, memPtrA );
102	return bbs_SIZEOF16( *ptrA );
103}
104
105/* ------------------------------------------------------------------------- */
106
107/* ========================================================================= */
108/*                                                                           */
109/* ---- \ghd{ exec functions } --------------------------------------------- */
110/*                                                                           */
111/* ========================================================================= */
112
113/* ------------------------------------------------------------------------- */
114
115uint32 bts_Int16Vec3D_norm2( const struct bts_Int16Vec3D* ptrA )
116{
117	return ( int32 ) ptrA->xE * ptrA->xE +
118		   ( int32 ) ptrA->yE * ptrA->yE +
119		   ( int32 ) ptrA->zE * ptrA->zE;
120}
121
122/* ------------------------------------------------------------------------- */
123
124uint16 bts_Int16Vec3D_norm( const struct bts_Int16Vec3D* ptrA )
125{
126	return bbs_sqrt32( ( int32 ) ptrA->xE * ptrA->xE +
127					   ( int32 ) ptrA->yE * ptrA->yE +
128					   ( int32 ) ptrA->zE * ptrA->zE );
129}
130
131/* ------------------------------------------------------------------------- */
132
133void bts_Int16Vec3D_normalize( struct bts_Int16Vec3D* ptrA, int32 bbpA )
134{
135	int32 normL = bbs_sqrt32( ( int32 ) ptrA->xE * ptrA->xE +
136							  ( int32 ) ptrA->yE * ptrA->yE +
137							  ( int32 ) ptrA->zE * ptrA->zE );
138
139	int32 xL = ( ( int32 )ptrA->xE << 16 ) / normL;
140	int32 yL = ( ( int32 )ptrA->yE << 16 ) / normL;
141	int32 zL = ( ( int32 )ptrA->zE << 16 ) / normL;
142	ptrA->xE = xL >> ( 16 - bbpA );
143	ptrA->yE = yL >> ( 16 - bbpA );
144	ptrA->zE = zL >> ( 16 - bbpA );
145}
146
147/* ------------------------------------------------------------------------- */
148
149struct bts_Int16Vec3D bts_Int16Vec3D_normalized( const struct bts_Int16Vec3D* ptrA, int32 bbpA )
150{
151	struct bts_Int16Vec3D vecL = *ptrA;
152	bts_Int16Vec3D_normalize( &vecL, bbpA );
153	return vecL;
154}
155
156/* ------------------------------------------------------------------------- */
157
158/* ========================================================================= */
159
160