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Searched
defs:L_x
(Results
1 - 3
of
3
) sorted by null
/frameworks/base/media/libstagefright/codecs/amrnb/common/src/
pow2.cpp
88
L_x
= Result of the Pow2() computation (Word32)
103
This function computes
L_x
= pow(2.0, exponent.fraction)
105
The function Pow2(
L_x
) is approximated by a table and linear interpolation.
109
3-
L_x
= table[i]<<16 - (table[i] - table[i+1]) * a * 2
110
4-
L_x
=
L_x
>> (30-exponent) (with rounding)
131
Word32
L_x
;
133
L_x
= L_mult (fraction, 32); //
L_x
= fraction<<6
134
i = extract_h (
L_x
); // Extract b10-b16 of fractio
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all
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/frameworks/base/media/libstagefright/codecs/amrwbenc/src/
math_op.c
47
| Compute 1/sqrt(
L_x
). |
48
| if
L_x
is negative or zero, result is 1 (7fffffff). |
52
| 1- Normalization of
L_x
. |
53
| 2- call Isqrt_n(
L_x
, exponant) |
54
| 3- L_y =
L_x
<< exponant |
58
Word32
L_x
/* (i) Q0 : input value (range: 0<=val<=7fffffff) */
63
exp = norm_l(
L_x
);
64
L_x
= (
L_x
<< exp); /*
L_x
is normalized *
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...]
/frameworks/base/media/libstagefright/codecs/amrwb/src/
pvamrwb_math_op.cpp
36
one_ov_sqrt() : Compute 1/sqrt(
L_x
)
268
Compute 1/sqrt(
L_x
).
269
if
L_x
is negative or zero, result is 1 (7fffffff).
273
1- Normalization of
L_x
.
274
2- call Isqrt_n(
L_x
, exponant)
275
3- L_y =
L_x
<< exponant
278
int32
L_x
/* (i) Q0 : input value (range: 0<=val<=7fffffff) */
284
exp = normalize_amr_wb(
L_x
);
285
L_x
<<= exp; /*
L_x
is normalized *
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...]
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