clarke.h

Go to the documentation of this file.

/*
 *  Copyright (C) 2023 Texas Instruments Incorporated
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *
 *    Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 *    Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the
 *    distribution.
 *
 *    Neither the name of Texas Instruments Incorporated nor the names of
 *    its contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
#ifndef _CLARKE_H_
#define _CLARKE_H_
 
#ifdef __cplusplus
extern "C"
{
#endif
 
#include <stdint.h>
 
typedef float float32_t;
 
#define ONE_OVER_THREE      0.33333333333333f
#define ONE_OVER_SQRT_THREE 0.57735026918963f
 
static __attribute__((always_inline)) 
void CLARKE_run_threeInput(const float32_t inIa, const float32_t inIb, const float32_t inIc, \
                        float32_t* pIalpha, float32_t* pIbeta)
{
    *pIalpha = ((2.0f * inIa) - (inIb + inIc)) * ONE_OVER_THREE;
    *pIbeta = (inIb - inIc) * ONE_OVER_SQRT_THREE;
}
 
static __attribute__((always_inline)) 
void CLARKE_run_twoInput(const float32_t inIa, const float32_t inIb, \
                        float32_t* pIalpha, float32_t* pIbeta)
{
    *pIalpha = inIa;
    *pIbeta = (inIa + (2.0f * inIb)) * ONE_OVER_SQRT_THREE;
}
 
#ifdef __cplusplus
}
#endif
 
#endif // _CLARKE_H_