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_BasicEm/Complex.h"
20#include "b_BasicEm/APh.h"
21#include "b_BasicEm/Functions.h"
22#include "b_BasicEm/Math.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
50flag bbs_Complex_equal( struct bbs_Complex compl1A, struct bbs_Complex compl2A )
51{
52	return ( compl1A.realE == compl2A.realE ) && ( compl1A.imagE == compl2A.imagE );
53}
54
55/* ------------------------------------------------------------------------- */
56
57/* ========================================================================= */
58/*                                                                           */
59/* ---- \ghd{ query functions } -------------------------------------------- */
60/*                                                                           */
61/* ========================================================================= */
62
63/* ------------------------------------------------------------------------- */
64
65/* ========================================================================= */
66/*                                                                           */
67/* ---- \ghd{ modify functions } ------------------------------------------- */
68/*                                                                           */
69/* ========================================================================= */
70
71/* ------------------------------------------------------------------------- */
72
73/* ========================================================================= */
74/*                                                                           */
75/* ---- \ghd{ I/O } -------------------------------------------------------- */
76/*                                                                           */
77/* ========================================================================= */
78
79/* ------------------------------------------------------------------------- */
80
81uint32 bbs_Complex_memSize( struct bbs_Context* cpA,
82						    struct bbs_Complex complA )
83{
84	return bbs_SIZEOF16( complA.realE ) + bbs_SIZEOF16( complA.imagE );
85}
86
87/* ------------------------------------------------------------------------- */
88
89uint32 bbs_Complex_memWrite( struct bbs_Context* cpA,
90							 const struct bbs_Complex* ptrA,
91							 uint16* memPtrA )
92{
93	memPtrA += bbs_memWrite16( &ptrA->realE, memPtrA );
94	memPtrA += bbs_memWrite16( &ptrA->imagE, memPtrA );
95	return bbs_Complex_memSize( cpA, *ptrA );
96}
97
98/* ------------------------------------------------------------------------- */
99
100uint32 bbs_Complex_memRead( struct bbs_Context* cpA,
101						    struct bbs_Complex* ptrA,
102							const uint16* memPtrA )
103{
104	if( bbs_Context_error( cpA ) ) return 0;
105	memPtrA += bbs_memRead16( &ptrA->realE, memPtrA );
106	memPtrA += bbs_memRead16( &ptrA->imagE, memPtrA );
107	return bbs_Complex_memSize( cpA, *ptrA );
108}
109
110/* ------------------------------------------------------------------------- */
111
112/* ========================================================================= */
113/*                                                                           */
114/* ---- \ghd{ exec functions } --------------------------------------------- */
115/*                                                                           */
116/* ========================================================================= */
117
118struct bbs_Complex bbs_Complex_conj( struct bbs_Complex complA )
119{
120	struct bbs_Complex resultL;
121	resultL.imagE = - complA.imagE;
122	resultL.realE = complA.realE;
123	return resultL;
124}
125
126/* ------------------------------------------------------------------------- */
127
128uint32 bbs_Complex_abs2( struct bbs_Complex complA )
129{
130	return ( int32 ) complA.realE * complA.realE +
131		   ( int32 ) complA.imagE * complA.imagE;
132}
133
134/* ------------------------------------------------------------------------- */
135
136uint16 bbs_Complex_abs( struct bbs_Complex complA )
137{
138	return bbs_sqrt32( bbs_Complex_abs2( complA ) );
139}
140
141/* ------------------------------------------------------------------------- */
142
143phase16 bbs_Complex_phase( struct bbs_Complex complA )
144{
145	int32 realL, imagL;
146	realL = complA.realE;
147	imagL = complA.imagE;
148
149	return bbs_phase16( realL, imagL );
150}
151
152/* ------------------------------------------------------------------------- */
153
154void bbs_Complex_importAPh( struct bbs_Complex* dstPtrA, const struct bbs_APh* srcPtrA )
155{
156	dstPtrA->realE = ( ( bbs_cos32( srcPtrA->phaseE ) >> 8 ) * srcPtrA->absE ) >> 16;
157	dstPtrA->imagE = ( ( bbs_sin32( srcPtrA->phaseE ) >> 8 ) * srcPtrA->absE ) >> 16;
158}
159
160/* ------------------------------------------------------------------------- */
161
162/* ========================================================================= */
163
164
165