2013-11-08 13:32:31 +00:00
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/* ----------------------------------------------------------------------
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* Copyright (C) 2010-2013 ARM Limited. All rights reserved.
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*
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* $Date: 17. January 2013
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* $Revision: V1.4.0
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2013-02-18 15:32:11 +00:00
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*
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* Project: CMSIS DSP Library
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*
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* Title: math_helper.h
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*
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* Description: Prototypes of all helper functions required.
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*
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* Target Processor: Cortex-M4/Cortex-M3
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*
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2013-11-08 13:32:31 +00:00
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* - Neither the name of ARM LIMITED nor the names of its contributors
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* may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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2013-02-18 15:32:11 +00:00
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* -------------------------------------------------------------------- */
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#include "arm_math.h"
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#ifndef MATH_HELPER_H
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#define MATH_HELPER_H
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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float arm_snr_f32(float *pRef, float *pTest, uint32_t buffSize);
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void arm_float_to_q12_20(float *pIn, q31_t * pOut, uint32_t numSamples);
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void arm_provide_guard_bits_q15(q15_t *input_buf, uint32_t blockSize, uint32_t guard_bits);
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void arm_provide_guard_bits_q31(q31_t *input_buf, uint32_t blockSize, uint32_t guard_bits);
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void arm_float_to_q14(float *pIn, q15_t *pOut, uint32_t numSamples);
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void arm_float_to_q29(float *pIn, q31_t *pOut, uint32_t numSamples);
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void arm_float_to_q28(float *pIn, q31_t *pOut, uint32_t numSamples);
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void arm_float_to_q30(float *pIn, q31_t *pOut, uint32_t numSamples);
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void arm_clip_f32(float *pIn, uint32_t numSamples);
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uint32_t arm_calc_guard_bits(uint32_t num_adds);
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void arm_apply_guard_bits (float32_t * pIn, uint32_t numSamples, uint32_t guard_bits);
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uint32_t arm_compare_fixed_q15(q15_t *pIn, q15_t * pOut, uint32_t numSamples);
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uint32_t arm_compare_fixed_q31(q31_t *pIn, q31_t *pOut, uint32_t numSamples);
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uint32_t arm_calc_2pow(uint32_t guard_bits);
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#ifdef __cplusplus
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}
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#endif
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#endif
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