1 /******************************************************************************
2 * *
3 * Copyright (C) 2023 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 * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
19 */
20
21 #include <float.h>
22 #include <math.h>
23 #include "ixheaac_type_def.h"
24 #include "ixheaac_constants.h"
25 #include "ixheaace_aac_constants.h"
26 #include "ixheaac_basic_ops32.h"
27 #include "ixheaac_basic_ops16.h"
28 #include "ixheaac_basic_ops40.h"
29 #include "ixheaac_basic_ops.h"
30
ia_enhaacplus_enc_norm32_arr(const WORD32 * word32_arr,LOOPINDEX n)31 WORD ia_enhaacplus_enc_norm32_arr(const WORD32 *word32_arr, LOOPINDEX n) {
32 WORD32 max_bits = 0;
33 for (; n != 0; n--) {
34 max_bits = max_bits | ixheaac_abs32_sat(*word32_arr++);
35 }
36 return (ixheaac_pnorm32(max_bits));
37 }
38
ixheaace_div32(FLOAT32 num,FLOAT32 den)39 FLOAT32 ixheaace_div32(FLOAT32 num, FLOAT32 den) {
40 if (fabs(den) < FLT_EPSILON) {
41 if (den < 0.0f) {
42 return -num;
43 }
44 else {
45 return num;
46 }
47 }
48 else {
49 return num / den;
50 }
51 }
52
ixheaace_div64(FLOAT64 num,FLOAT64 den)53 FLOAT64 ixheaace_div64(FLOAT64 num, FLOAT64 den) {
54 if (fabs(den) < FLT_EPSILON) {
55 if (den < 0.0) {
56 return -num;
57 }
58 else {
59 return num;
60 }
61 }
62 else {
63 return num / den;
64 }
65 }
66