1 /* ------------------------------------------------------------------ 2 * Copyright (C) 1998-2009 PacketVideo 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 13 * express or implied. 14 * See the License for the specific language governing permissions 15 * and limitations under the License. 16 * ------------------------------------------------------------------- 17 */ 18 /**************************************************************************************** 19 Portions of this file are derived from the following 3GPP standard: 20 21 3GPP TS 26.073 22 ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec 23 Available from http://www.3gpp.org 24 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 ****************************************************************************************/ 29 /* 30 31 Filename: pow2.h 32 33 ------------------------------------------------------------------------------ 34 INCLUDE DESCRIPTION 35 36 This file contains the prototype declaration for Pow2() function. 37 38 ------------------------------------------------------------------------------ 39 */ 40 41 /*---------------------------------------------------------------------------- 42 ; CONTINUE ONLY IF NOT ALREADY DEFINED 43 ----------------------------------------------------------------------------*/ 44 #ifndef POW2_H 45 #define POW2_H 46 47 /*---------------------------------------------------------------------------- 48 ; INCLUDES 49 ----------------------------------------------------------------------------*/ 50 #include "typedef.h" 51 52 /*--------------------------------------------------------------------------*/ 53 #ifdef __cplusplus 54 extern "C" 55 { 56 #endif 57 58 /*---------------------------------------------------------------------------- 59 ; MACROS 60 ; Define module specific macros here 61 ----------------------------------------------------------------------------*/ 62 63 /*---------------------------------------------------------------------------- 64 ; DEFINES 65 ; Include all pre-processor statements here. 66 ----------------------------------------------------------------------------*/ 67 68 /*---------------------------------------------------------------------------- 69 ; EXTERNAL VARIABLES REFERENCES 70 ; Declare variables used in this module but defined elsewhere 71 ----------------------------------------------------------------------------*/ 72 extern const Word16 pow2_tbl[]; 73 /*---------------------------------------------------------------------------- 74 ; SIMPLE TYPEDEF'S 75 ----------------------------------------------------------------------------*/ 76 77 /*---------------------------------------------------------------------------- 78 ; ENUMERATED TYPEDEF'S 79 ----------------------------------------------------------------------------*/ 80 81 /*---------------------------------------------------------------------------- 82 ; STRUCTURES TYPEDEF'S 83 ----------------------------------------------------------------------------*/ 84 85 /*---------------------------------------------------------------------------- 86 ; GLOBAL FUNCTION DEFINITIONS 87 ; Function Prototype declaration 88 ----------------------------------------------------------------------------*/ 89 90 OSCL_IMPORT_REF Word32 Pow2( 91 /* (o) : result (range: 0<=val<=0x7fffffff) */ 92 Word16 exponent, /* (i) : Integer part. (range: 0<=val<=30) */ 93 Word16 fraction, /* (i) : Fractional part. (range: 0.0<=val<1.0) */ 94 Flag *pOverflow /* (i/o) : overflow flag */ 95 ); 96 97 /*---------------------------------------------------------------------------- 98 ; END 99 ----------------------------------------------------------------------------*/ 100 #ifdef __cplusplus 101 } 102 #endif 103 104 #endif /* _POW2_H_ */ 105