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git.gir.st - tmk_keyboard.git/blob - tmk_core/tool/mbed/mbed-sdk/libraries/dsp/cmsis_dsp/math_helper.h
1 /* ----------------------------------------------------------------------
2 * Copyright (C) 2010-2013 ARM Limited. All rights reserved.
4 * $Date: 17. January 2013
7 * Project: CMSIS DSP Library
11 * Description: Prototypes of all helper functions required.
13 * Target Processor: Cortex-M4/Cortex-M3
15 * Redistribution and use in source and binary forms, with or without
16 * modification, are permitted provided that the following conditions
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
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.
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 * -------------------------------------------------------------------- */
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
);