tmk_core/tool/mbed/mbed-sdk/libraries/dsp/cmsis_dsp/math_helper.h

   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 #ifdef  __cplusplus
  49 extern "C"
  50 {
  51 #endif
  52
  53 float arm_snr_f32(float *pRef, float *pTest,  uint32_t buffSize);
  54 void arm_float_to_q12_20(float *pIn, q31_t * pOut, uint32_t numSamples);
  55 void arm_provide_guard_bits_q15(q15_t *input_buf, uint32_t blockSize, uint32_t guard_bits);
  56 void arm_provide_guard_bits_q31(q31_t *input_buf, uint32_t blockSize, uint32_t guard_bits);
  57 void arm_float_to_q14(float *pIn, q15_t *pOut, uint32_t numSamples);
  58 void arm_float_to_q29(float *pIn, q31_t *pOut, uint32_t numSamples);
  59 void arm_float_to_q28(float *pIn, q31_t *pOut, uint32_t numSamples);
  60 void arm_float_to_q30(float *pIn, q31_t *pOut, uint32_t numSamples);
  61 void arm_clip_f32(float *pIn, uint32_t numSamples);
  62 uint32_t arm_calc_guard_bits(uint32_t num_adds);
  63 void arm_apply_guard_bits (float32_t * pIn, uint32_t numSamples, uint32_t guard_bits);
  64 uint32_t arm_compare_fixed_q15(q15_t *pIn, q15_t * pOut, uint32_t numSamples);
  65 uint32_t arm_compare_fixed_q31(q31_t *pIn, q31_t *pOut, uint32_t numSamples);
  66 uint32_t arm_calc_2pow(uint32_t guard_bits);
  67
  68 #ifdef  __cplusplus
  69 }
  70 #endif
  71
  72 #endif
  73