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 ****************************************************************************************/
33 ------------------------------------------------------------------------------
36 This file contains all the constant definitions and prototype definitions
37 needed by the L_sub function.
39 ------------------------------------------------------------------------------
42 /*----------------------------------------------------------------------------
43 ; CONTINUE ONLY IF NOT ALREADY DEFINED
44 ----------------------------------------------------------------------------*/
49 /*----------------------------------------------------------------------------
51 ----------------------------------------------------------------------------*/
52 #include "basicop_malloc.h"
54 /*--------------------------------------------------------------------------*/
60 /*----------------------------------------------------------------------------
62 ; Define module specific macros here
63 ----------------------------------------------------------------------------*/
65 /*----------------------------------------------------------------------------
67 ; Include all pre-processor statements here.
68 ----------------------------------------------------------------------------*/
70 /*----------------------------------------------------------------------------
71 ; EXTERNAL VARIABLES REFERENCES
72 ; Declare variables used in this module but defined elsewhere
73 ----------------------------------------------------------------------------*/
75 /*----------------------------------------------------------------------------
77 ----------------------------------------------------------------------------*/
79 /*----------------------------------------------------------------------------
80 ; ENUMERATED TYPEDEF'S
81 ----------------------------------------------------------------------------*/
83 /*----------------------------------------------------------------------------
84 ; STRUCTURES TYPEDEF'S
85 ----------------------------------------------------------------------------*/
87 /*----------------------------------------------------------------------------
88 ; GLOBAL FUNCTION DEFINITIONS
89 ; Function Prototype declaration
90 ----------------------------------------------------------------------------*/
91 #if defined(PV_ARM_V5) /* Instructions for ARM Assembly on ADS*/
93 __inline Word32 L_sub(Word32 L_var1, Word32 L_var2, Flag *pOverflow)
97 OSCL_UNUSED_ARG(pOverflow);
101 QSUB result, L_var1, L_var2
108 #elif defined(PV_ARM_GCC_V5) /* Instructions for ARM-linux cross-compiler*/
110 __inline Word32 L_sub(Word32 L_var1, Word32 L_var2, Flag *pOverflow)
112 register Word32 ra = L_var1;
113 register Word32 rb = L_var2;
116 OSCL_UNUSED_ARG(pOverflow);
118 asm volatile("qsub %0, %1, %2"
126 #else /* C EQUIVALENT */
128 static inline Word32 L_sub(register Word32 L_var1, register Word32 L_var2,
129 register Flag *pOverflow)
133 L_diff = L_var1 - L_var2;
135 if ((L_var1 ^ L_var2) < 0)
137 if ((L_diff ^ L_var1) & MIN_32)
139 L_diff = (L_var1 < 0L) ? MIN_32 : MAX_32;
148 /*----------------------------------------------------------------------------
150 ----------------------------------------------------------------------------*/
155 #endif /* _L_SUB_H_ */