/*****************************************************************************/ /* 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[];