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| 2 | mjames | 1 | /* ---------------------------------------------------------------------- |
| 2 | * Copyright (C) 2010-2013 ARM Limited. All rights reserved. |
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| 3 | * |
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| 4 | * $Date: 17. January 2013 |
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| 5 | * $Revision: V1.4.0 |
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| 6 | * |
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| 7 | * Project: CMSIS DSP Library |
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| 8 | * |
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| 9 | * Title: math_helper.h |
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| 10 | * |
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| 11 | * Description: Prototypes of all helper functions required. |
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| 12 | * |
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| 13 | * Target Processor: Cortex-M4/Cortex-M3 |
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| 14 | * |
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| 15 | * Redistribution and use in source and binary forms, with or without |
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| 16 | * modification, are permitted provided that the following conditions |
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| 17 | * are met: |
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| 18 | * - Redistributions of source code must retain the above copyright |
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| 19 | * notice, this list of conditions and the following disclaimer. |
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| 20 | * - Redistributions in binary form must reproduce the above copyright |
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| 21 | * notice, this list of conditions and the following disclaimer in |
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| 22 | * the documentation and/or other materials provided with the |
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| 23 | * distribution. |
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| 24 | * - Neither the name of ARM LIMITED nor the names of its contributors |
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| 25 | * may be used to endorse or promote products derived from this |
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| 26 | * software without specific prior written permission. |
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| 27 | * |
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| 28 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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| 29 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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| 30 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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| 31 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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| 32 | * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 33 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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| 34 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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| 35 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
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| 36 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| 37 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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| 38 | * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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| 39 | * POSSIBILITY OF SUCH DAMAGE. |
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| 40 | * -------------------------------------------------------------------- */ |
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| 41 | |||
| 42 | |||
| 43 | #include "arm_math.h" |
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| 44 | |||
| 45 | #ifndef MATH_HELPER_H |
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| 46 | #define MATH_HELPER_H |
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| 47 | |||
| 48 | float arm_snr_f32(float *pRef, float *pTest, uint32_t buffSize); |
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| 49 | void arm_float_to_q12_20(float *pIn, q31_t * pOut, uint32_t numSamples); |
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| 50 | void arm_provide_guard_bits_q15(q15_t *input_buf, uint32_t blockSize, uint32_t guard_bits); |
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| 51 | void arm_provide_guard_bits_q31(q31_t *input_buf, uint32_t blockSize, uint32_t guard_bits); |
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| 52 | void arm_float_to_q14(float *pIn, q15_t *pOut, uint32_t numSamples); |
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| 53 | void arm_float_to_q29(float *pIn, q31_t *pOut, uint32_t numSamples); |
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| 54 | void arm_float_to_q28(float *pIn, q31_t *pOut, uint32_t numSamples); |
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| 55 | void arm_float_to_q30(float *pIn, q31_t *pOut, uint32_t numSamples); |
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| 56 | void arm_clip_f32(float *pIn, uint32_t numSamples); |
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| 57 | uint32_t arm_calc_guard_bits(uint32_t num_adds); |
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| 58 | void arm_apply_guard_bits (float32_t * pIn, uint32_t numSamples, uint32_t guard_bits); |
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| 59 | uint32_t arm_compare_fixed_q15(q15_t *pIn, q15_t * pOut, uint32_t numSamples); |
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| 60 | uint32_t arm_compare_fixed_q31(q31_t *pIn, q31_t *pOut, uint32_t numSamples); |
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| 61 | uint32_t arm_calc_2pow(uint32_t guard_bits); |
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| 62 | #endif |
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| 63 |