diff options
Diffstat (limited to 'thirdparties/win32/include/BroadVoice16/bvcommon/mathutil.h')
| -rw-r--r-- | thirdparties/win32/include/BroadVoice16/bvcommon/mathutil.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/thirdparties/win32/include/BroadVoice16/bvcommon/mathutil.h b/thirdparties/win32/include/BroadVoice16/bvcommon/mathutil.h new file mode 100644 index 0000000..17198cd --- /dev/null +++ b/thirdparties/win32/include/BroadVoice16/bvcommon/mathutil.h @@ -0,0 +1,47 @@ +/*****************************************************************************/ +/* BroadVoice(R)16 (BV16) Fixed-Point ANSI-C Source Code */ +/* Revision Date: November 13, 2009 */ +/* Version 1.1 */ +/*****************************************************************************/ + +/*****************************************************************************/ +/* Copyright 2000-2009 Broadcom Corporation */ +/* */ +/* This software is provided under the GNU Lesser General Public License, */ +/* version 2.1, as published by the Free Software Foundation ("LGPL"). */ +/* This program is distributed in the hope that it will be useful, but */ +/* WITHOUT ANY SUPPORT OR WARRANTY; without even the implied warranty of */ +/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the LGPL for */ +/* more details. A copy of the LGPL is available at */ +/* http://www.broadcom.com/licenses/LGPLv2.1.php, */ +/* or by writing to the Free Software Foundation, Inc., */ +/* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +/*****************************************************************************/ + + +/***************************************************************************** + fixmath.h : Common Fixed-Point Library: + + $Log$ +******************************************************************************/ + +Word32 Pow2( /* Q0 output */ + Word16 int_comp, /* Q0 Integer part */ + Word16 frac_comp /* Q15 frac_compal part */ + ); + +void Log2( + Word32 x, /* (i) input */ + Word16 *int_comp, /* Q0 integer part */ + Word16 *frac_comp /* Q15 fractional part */ + ); + +void sqrt_i(Word16 x_man, Word16 x_exp, Word16 *y_man, Word16 *y_exp); +Word16 sqrts(Word16 x); + +extern Word16 tabsqrt[]; +extern Word16 tablog[]; +extern Word16 tabpow[]; +extern Word16 costable[]; +extern Word16 acosslope[]; + |
