1 /* ---------------------------------------------------------------------- 2 * Copyright (C) 2010-2013 ARM Limited. All rights reserved. 3 * 4 * $Date: 17. January 2013 5 * $Revision: V1.4.0 6 * 7 * Project: CMSIS DSP Library 8 * 9 * Title: math_helper.h 10 * 11 * Description: Prototypes of all helper functions required. 12 * 13 * Target Processor: Cortex-M4/Cortex-M3 14 * 15 * Redistribution and use in source and binary forms, with or without 16 * modification, are permitted provided that the following conditions 17 * are met: 18 * - Redistributions of source code must retain the above copyright 19 * notice, this list of conditions and the following disclaimer. 20 * - Redistributions in binary form must reproduce the above copyright 21 * notice, this list of conditions and the following disclaimer in 22 * the documentation and/or other materials provided with the 23 * distribution. 24 * - Neither the name of ARM LIMITED nor the names of its contributors 25 * may be used to endorse or promote products derived from this 26 * software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 29 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 30 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 31 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 32 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 33 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 34 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 35 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 36 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 38 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 39 * POSSIBILITY OF SUCH DAMAGE. 40 * -------------------------------------------------------------------- */ 41 42 43 #include "arm_math.h" 44 45 #ifndef MATH_HELPER_H 46 #define MATH_HELPER_H 47 48 float arm_snr_f32(float *pRef, float *pTest, uint32_t buffSize); 49 void arm_float_to_q12_20(float *pIn, q31_t * pOut, uint32_t numSamples); 50 void arm_provide_guard_bits_q15(q15_t *input_buf, uint32_t blockSize, uint32_t guard_bits); 51 void arm_provide_guard_bits_q31(q31_t *input_buf, uint32_t blockSize, uint32_t guard_bits); 52 void arm_float_to_q14(float *pIn, q15_t *pOut, uint32_t numSamples); 53 void arm_float_to_q29(float *pIn, q31_t *pOut, uint32_t numSamples); 54 void arm_float_to_q28(float *pIn, q31_t *pOut, uint32_t numSamples); 55 void arm_float_to_q30(float *pIn, q31_t *pOut, uint32_t numSamples); 56 uint32_t arm_calc_guard_bits(uint32_t num_adds); 57 void arm_apply_guard_bits (float32_t * pIn, uint32_t numSamples, uint32_t guard_bits); 58 uint32_t arm_compare_fixed_q15(q15_t *pIn, q15_t * pOut, uint32_t numSamples); 59 uint32_t arm_compare_fixed_q31(q31_t *pIn, q31_t *pOut, uint32_t numSamples); 60 uint32_t arm_calc_2pow(uint32_t guard_bits); 61 #endif 62 63
