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 38 #ifdef BUILD_FLOAT 39 LVM_FLOAT Abs_Float(LVM_FLOAT input); 40 #else 41 LVM_INT32 Abs_32(LVM_INT32 input); 42 #endif 43 44 /**************************************************************************************** 45 * Name : dB_to_Lin32() 46 * Input : Signed 16-bit integer 47 * MSB (16) = sign bit 48 * (15->05) = integer part 49 * (04->01) = decimal part 50 * Output : Signed 32-bit integer 51 * MSB (32) = sign bit 52 * (31->16) = integer part 53 * (15->01) = decimal part 54 * Returns : Lin value format 1.16.15 55 ****************************************************************************************/ 56 #ifdef BUILD_FLOAT 57 LVM_FLOAT dB_to_LinFloat(LVM_INT16 db_fix); 58 #else 59 LVM_INT32 dB_to_Lin32(LVM_INT16 db_fix); 60 #endif 61 62 #ifdef __cplusplus 63 } 64 #endif /* __cplusplus */ 65 66 #endif /* __SCALARARITHMETIC_H__ */ 67 68 69