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  /frameworks/base/media/libstagefright/codecs/amrnb/common/src/
log2.cpp 30 Filename: /audio/gsm_amr/c/src/log2.c
59 #include "log2.h"
87 FUNCTION NAME: log2()
93 pExponent = pointer to the integer part of Log2 of type Word16 whose
95 pFraction = pointer to the fractional part of Log2 of type Word16
101 pExponent -> integer part of the newly calculated Log2
102 pFraction -> fractional part of the newly calculated Log2
103 pOverflow -> 1 if the log2() operation resulted in saturation
131 [1] log2.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
163 void Log2(
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  /frameworks/base/media/libstagefright/codecs/amrwbenc/src/
log2.c 19 * File : log2.c *
20 * Purpose : Computes log2(L_x) *
24 #include "log2.h"
34 #include "log2_tab.h" /* Table for Log2() */
40 * PURPOSE: Computes log2(L_x, exp), where L_x is positive and
45 * The function Log2(L_x) is approximated by a table and linear
46 * interpolation. The following steps are used to compute Log2(L_x)
59 Word16 *exponent, /* (o) : Integer part of Log2. (range: 0<=val<=30) */
60 Word16 *fraction /* (o) : Fractional part of Log2. (range: 0<=val<1) */
88 * FUNCTION: Log2()
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  /frameworks/base/media/libstagefright/codecs/amrwbenc/inc/
typedefs.h 183 #define Log2 voAWB_Log2

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