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: inv_sqrt.h 32 33 ------------------------------------------------------------------------------ 34 INCLUDE DESCRIPTION 35 36 This file contains all the constant definitions and prototype definitions 37 needed by the inv_sqrt() function. 38 39 ------------------------------------------------------------------------------ 40 */ 41 42 #ifndef INV_SQRT_H 43 #define INV_SQRT_H 44 45 /*---------------------------------------------------------------------------- 46 ; INCLUDES 47 ----------------------------------------------------------------------------*/ 48 #include "basicop_malloc.h" 49 50 /*--------------------------------------------------------------------------*/ 51 #ifdef __cplusplus 52 extern "C" 53 { 54 #endif 55 56 /*---------------------------------------------------------------------------- 57 ; MACROS 58 ; Define module specific macros here 59 ----------------------------------------------------------------------------*/ 60 61 /*---------------------------------------------------------------------------- 62 ; DEFINES 63 ; Include all pre-processor statements here. 64 ----------------------------------------------------------------------------*/ 65 66 /*---------------------------------------------------------------------------- 67 ; EXTERNAL VARIABLES REFERENCES 68 ; Declare variables used in this module but defined elsewhere 69 ----------------------------------------------------------------------------*/ 70 extern const Word16 inv_sqrt_tbl[]; 71 /*---------------------------------------------------------------------------- 72 ; SIMPLE TYPEDEF'S 73 ----------------------------------------------------------------------------*/ 74 75 /*---------------------------------------------------------------------------- 76 ; ENUMERATED TYPEDEF'S 77 ----------------------------------------------------------------------------*/ 78 79 /*---------------------------------------------------------------------------- 80 ; STRUCTURES TYPEDEF'S 81 ----------------------------------------------------------------------------*/ 82 83 /*---------------------------------------------------------------------------- 84 ; GLOBAL FUNCTION DEFINITIONS 85 ; Function Prototype declaration 86 ----------------------------------------------------------------------------*/ 87 OSCL_IMPORT_REF Word32 Inv_sqrt( /* (o) : output value */ 88 Word32 L_x, /* (i) : input value */ 89 Flag *pOverflow /* (i) : pointer to overflow flag */ 90 ); 91 92 /*---------------------------------------------------------------------------- 93 ; END 94 ----------------------------------------------------------------------------*/ 95 #ifdef __cplusplus 96 } 97 #endif 98 99 #endif /* _INV_SQRT_H_ */ 100 101