FreeCalypso > hg > gsm-codec-lib
annotate libtwamr/sqrt_l.h @ 529:79cd992de3ad
libgsmfr2: API definitions for TFO transform
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Thu, 19 Sep 2024 08:07:26 +0000 |
parents | 8dfb7cbe6b59 |
children |
rev | line source |
---|---|
308
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
1 /* |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
2 ******************************************************************************** |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
3 * |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
4 * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001 |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
5 * R99 Version 3.3.0 |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
6 * REL-4 Version 4.1.0 |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
7 * |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
8 ******************************************************************************** |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
9 * |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
10 * File : sqrt_l.h |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
11 * Purpose : Computes sqrt(L_x), where L_x is positive. |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
12 * : If L_x is negative or zero, the result is |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
13 * : 0 (3fff ffff). |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
14 * |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
15 ******************************************************************************** |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
16 */ |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
17 #ifndef sqrt_l_h |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
18 #define sqrt_l_h "$Id $" |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
19 |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
20 /* |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
21 ******************************************************************************** |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
22 * INCLUDE FILES |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
23 ******************************************************************************** |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
24 */ |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
25 #include "typedef.h" |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
26 |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
27 /* |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
28 ******************************************************************************** |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
29 * DECLARATION OF PROTOTYPES |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
30 ******************************************************************************** |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
31 */ |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
32 |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
33 Word32 sqrt_l_exp (/* o : output value, Q31 */ |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
34 Word32 L_x, /* i : input value, Q31 */ |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
35 Word16 *exp /* o : right shift to be applied to result, Q0 */ |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
36 ); |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
37 |
8dfb7cbe6b59
libtwamr: integrated up to bgnscd.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
38 #endif |