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77 lines
2.2 KiB
77 lines
2.2 KiB
/******************************************************************************
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*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*****************************************************************************
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* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
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*/
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/*!
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******************************************************************************
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* \file convert_float_to_fix.c
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*
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* \brief
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* This file contain float to fix and fix to float conversion function
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*
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* \date
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*
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* \author
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* ittiam
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*
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******************************************************************************
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*/
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/*****************************************************************************/
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/* File Includes */
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/*****************************************************************************/
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/* System include files */
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#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#include <time.h>
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#include <string.h>
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/* User include files */
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#include "ia_type_def.h"
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/* #include "num_struct.h" */
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#include "var_q_operator.h"
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#define ABS(x) (((x) > 0) ? (x) : (-(x)))
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void convert_float_to_fix(float a_f, number_t *a)
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{
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double log_a_f;
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if(a_f != 0)
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{
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log_a_f = log(ABS(a_f)) / log(2);
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a->e = 30 - (WORD32)ceil(log_a_f);
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a->sm = (WORD32)(a_f * pow(2, a->e));
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}
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else
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{
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a->e = 0;
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a->sm = 0;
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}
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}
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void convert_fix_to_float(number_t a, float *a_f)
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{
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*a_f = (float)(a.sm / pow(2, a.e));
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}
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#ifdef ITT_C6678
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#pragma CODE_SECTION(convert_fix_to_float, "itt_varq_l1pram");
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#pragma CODE_SECTION(convert_float_to_fix, "itt_varq_l1pram");
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#endif
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