1 /* 2 * Copyright (C) 2004-2010 NXP Software 3 * Copyright (C) 2010 The Android Open Source Project 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 #ifndef __SCALARARITHMETIC_H__ 19 #define __SCALARARITHMETIC_H__ 20 21 #ifdef __cplusplus 22 extern "C" { 23 #endif /* __cplusplus */ 24 25 26 /*######################################################################################*/ 27 /* Include files */ 28 /*######################################################################################*/ 29 30 #include "LVM_Types.h" 31 32 /*######################################################################################*/ 33 /* Extern function prototypes */ 34 /*######################################################################################*/ 35 36 /* Absolute value including the corner case for the extreme negative value */ 37 LVM_INT32 Abs_32(LVM_INT32 input); 38 39 /**************************************************************************************** 40 * Name : dB_to_Lin32() 41 * Input : Signed 16-bit integer 42 * MSB (16) = sign bit 43 * (15->05) = integer part 44 * (04->01) = decimal part 45 * Output : Signed 32-bit integer 46 * MSB (32) = sign bit 47 * (31->16) = integer part 48 * (15->01) = decimal part 49 * Returns : Lin value format 1.16.15 50 ****************************************************************************************/ 51 52 LVM_INT32 dB_to_Lin32(LVM_INT16 db_fix); 53 54 #ifdef __cplusplus 55 } 56 #endif /* __cplusplus */ 57 58 #endif /* __SCALARARITHMETIC_H__ */ 59 60 61
