dc/basics/conversion.h

0001 /*
0002  * Copyright 2012-15 Advanced Micro Devices, Inc.
0003  *
0004  * Permission is hereby granted, free of charge, to any person obtaining a
0005  * copy of this software and associated documentation files (the "Software"),
0006  * to deal in the Software without restriction, including without limitation
0007  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
0008  * and/or sell copies of the Software, and to permit persons to whom the
0009  * Software is furnished to do so, subject to the following conditions:
0010  *
0011  * The above copyright notice and this permission notice shall be included in
0012  * all copies or substantial portions of the Software.
0013  *
0014  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
0015  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
0016  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
0017  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
0018  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
0019  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
0020  * OTHER DEALINGS IN THE SOFTWARE.
0021  *
0022  * Authors: AMD
0023  *
0024  */
0025
0026 #ifndef __DAL_CONVERSION_H__
0027 #define __DAL_CONVERSION_H__
0028
0029 #include "include/fixed31_32.h"
0030
0031 uint16_t fixed_point_to_int_frac(
0032     struct fixed31_32 arg,
0033     uint8_t integer_bits,
0034     uint8_t fractional_bits);
0035
0036 void convert_float_matrix(
0037     uint16_t *matrix,
0038     struct fixed31_32 *flt,
0039     uint32_t buffer_size);
0040
0041 void reduce_fraction(uint32_t num, uint32_t den,
0042         uint32_t *out_num, uint32_t *out_den);
0043
0044 static inline unsigned int log_2(unsigned int num)
0045 {
0046     return ilog2(num);
0047 }
0048
0049 #endif