1*c83a76b0SSuyog Pawar /******************************************************************************
2*c83a76b0SSuyog Pawar *
3*c83a76b0SSuyog Pawar * Copyright (C) 2018 The Android Open Source Project
4*c83a76b0SSuyog Pawar *
5*c83a76b0SSuyog Pawar * Licensed under the Apache License, Version 2.0 (the "License");
6*c83a76b0SSuyog Pawar * you may not use this file except in compliance with the License.
7*c83a76b0SSuyog Pawar * You may obtain a copy of the License at:
8*c83a76b0SSuyog Pawar *
9*c83a76b0SSuyog Pawar * http://www.apache.org/licenses/LICENSE-2.0
10*c83a76b0SSuyog Pawar *
11*c83a76b0SSuyog Pawar * Unless required by applicable law or agreed to in writing, software
12*c83a76b0SSuyog Pawar * distributed under the License is distributed on an "AS IS" BASIS,
13*c83a76b0SSuyog Pawar * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14*c83a76b0SSuyog Pawar * See the License for the specific language governing permissions and
15*c83a76b0SSuyog Pawar * limitations under the License.
16*c83a76b0SSuyog Pawar *
17*c83a76b0SSuyog Pawar *****************************************************************************
18*c83a76b0SSuyog Pawar * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
19*c83a76b0SSuyog Pawar */
20*c83a76b0SSuyog Pawar /*!
21*c83a76b0SSuyog Pawar ******************************************************************************
22*c83a76b0SSuyog Pawar * \file convert_float_to_fix.c
23*c83a76b0SSuyog Pawar *
24*c83a76b0SSuyog Pawar * \brief
25*c83a76b0SSuyog Pawar * This file contain float to fix and fix to float conversion function
26*c83a76b0SSuyog Pawar *
27*c83a76b0SSuyog Pawar * \date
28*c83a76b0SSuyog Pawar *
29*c83a76b0SSuyog Pawar * \author
30*c83a76b0SSuyog Pawar * ittiam
31*c83a76b0SSuyog Pawar *
32*c83a76b0SSuyog Pawar ******************************************************************************
33*c83a76b0SSuyog Pawar */
34*c83a76b0SSuyog Pawar /*****************************************************************************/
35*c83a76b0SSuyog Pawar /* File Includes */
36*c83a76b0SSuyog Pawar /*****************************************************************************/
37*c83a76b0SSuyog Pawar /* System include files */
38*c83a76b0SSuyog Pawar #include <stdio.h>
39*c83a76b0SSuyog Pawar #include <stdlib.h>
40*c83a76b0SSuyog Pawar #include <math.h>
41*c83a76b0SSuyog Pawar #include <time.h>
42*c83a76b0SSuyog Pawar #include <string.h>
43*c83a76b0SSuyog Pawar
44*c83a76b0SSuyog Pawar /* User include files */
45*c83a76b0SSuyog Pawar #include "ia_type_def.h"
46*c83a76b0SSuyog Pawar /* #include "num_struct.h" */
47*c83a76b0SSuyog Pawar #include "var_q_operator.h"
48*c83a76b0SSuyog Pawar
49*c83a76b0SSuyog Pawar #define ABS(x) (((x) > 0) ? (x) : (-(x)))
50*c83a76b0SSuyog Pawar
convert_float_to_fix(float a_f,number_t * a)51*c83a76b0SSuyog Pawar void convert_float_to_fix(float a_f, number_t *a)
52*c83a76b0SSuyog Pawar {
53*c83a76b0SSuyog Pawar double log_a_f;
54*c83a76b0SSuyog Pawar if(a_f != 0)
55*c83a76b0SSuyog Pawar {
56*c83a76b0SSuyog Pawar log_a_f = log(ABS(a_f)) / log(2);
57*c83a76b0SSuyog Pawar
58*c83a76b0SSuyog Pawar a->e = 30 - (WORD32)ceil(log_a_f);
59*c83a76b0SSuyog Pawar a->sm = (WORD32)(a_f * pow(2, a->e));
60*c83a76b0SSuyog Pawar }
61*c83a76b0SSuyog Pawar else
62*c83a76b0SSuyog Pawar {
63*c83a76b0SSuyog Pawar a->e = 0;
64*c83a76b0SSuyog Pawar a->sm = 0;
65*c83a76b0SSuyog Pawar }
66*c83a76b0SSuyog Pawar }
67*c83a76b0SSuyog Pawar
convert_fix_to_float(number_t a,float * a_f)68*c83a76b0SSuyog Pawar void convert_fix_to_float(number_t a, float *a_f)
69*c83a76b0SSuyog Pawar {
70*c83a76b0SSuyog Pawar *a_f = (float)(a.sm / pow(2, a.e));
71*c83a76b0SSuyog Pawar }
72*c83a76b0SSuyog Pawar
73*c83a76b0SSuyog Pawar #ifdef ITT_C6678
74*c83a76b0SSuyog Pawar #pragma CODE_SECTION(convert_fix_to_float, "itt_varq_l1pram");
75*c83a76b0SSuyog Pawar #pragma CODE_SECTION(convert_float_to_fix, "itt_varq_l1pram");
76*c83a76b0SSuyog Pawar #endif
77