1 /* ------------------------------------------------------------------
2 * Copyright (C) 1998-2009 PacketVideo
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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
14 * See the License for the specific language governing permissions
15 * and limitations under the License.
16 * -------------------------------------------------------------------
18 /****************************************************************************************
19 Portions of this file are derived from the following 3GPP standard:
22 ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
23 Available from http://www.3gpp.org
25 (C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
26 Permission to distribute, modify and use this file under the standard license
27 terms listed above has been obtained from the copyright holder.
28 ****************************************************************************************/
32 ------------------------------------------------------------------------------
33 INPUT AND OUTPUT DEFINITIONS
36 L_var1 = 32 bit long signed integer (Word32 ) whose value falls
37 in the range : 0x8000 0000 <= L_var1 <= 0x7fff ffff.
39 Local Stores/Buffers/Pointers Needed:
42 Global Stores/Buffers/Pointers Needed:
46 L_var1 = absolute value of input (Word32)
48 Pointers and Buffers Modified:
51 Local Stores Modified:
54 Global Stores Modified:
57 ------------------------------------------------------------------------------
60 This function calculates the absolute value of L_var1; saturate in case
61 where the input is -214783648.
63 ------------------------------------------------------------------------------
68 ------------------------------------------------------------------------------
71 [1] basicop2.c, ETS Version 2.0.0, February 8, 1999
73 ------------------------------------------------------------------------------
76 Word32 L_abs (Word32 L_var1)
97 multiCounter[currCounter].L_abs++;
103 ------------------------------------------------------------------------------
107 /*----------------------------------------------------------------------------
109 ----------------------------------------------------------------------------*/
112 /*----------------------------------------------------------------------------
114 ; Define module specific macros here
115 ----------------------------------------------------------------------------*/
117 /*----------------------------------------------------------------------------
119 ; Include all pre-processor statements here. Include conditional
120 ; compile variables also.
121 ----------------------------------------------------------------------------*/
123 /*----------------------------------------------------------------------------
124 ; LOCAL FUNCTION DEFINITIONS
125 ; Function Prototype declaration
126 ----------------------------------------------------------------------------*/
128 /*----------------------------------------------------------------------------
129 ; LOCAL STORE/BUFFER/POINTER DEFINITIONS
130 ; Variable declaration - defined here and used outside this module
131 ----------------------------------------------------------------------------*/
133 /*----------------------------------------------------------------------------
134 ; EXTERNAL FUNCTION REFERENCES
135 ; Declare functions defined elsewhere and referenced in this module
136 ----------------------------------------------------------------------------*/
138 /*----------------------------------------------------------------------------
139 ; EXTERNAL GLOBAL STORE/BUFFER/POINTER REFERENCES
140 ; Declare variables used in this module but defined elsewhere
141 ----------------------------------------------------------------------------*/
143 /*----------------------------------------------------------------------------
145 ----------------------------------------------------------------------------*/
146 Word32 L_abs(Word32 L_var1)
148 /*----------------------------------------------------------------------------
149 ; Define all local variables
150 ----------------------------------------------------------------------------*/
152 /*----------------------------------------------------------------------------
154 ----------------------------------------------------------------------------*/
156 Word32 y = L_var1 - (L_var1 < 0);