32343
843447835d
- IPS200 display menu with real-time status and parameter settings - Camera image processing and line tracking - IMU attitude solution and PID control - WiFi SPI oscilloscope data transmission
108 lines
4.0 KiB
C
108 lines
4.0 KiB
C
/**
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* \file Ifx_LutLSincosF32.h
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* \brief Sin/Cos linear approximated lookup functions with fixed-point angle data type
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* \ingroup library_srvsw_sysse_math_lut_lsincos
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*
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*
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*
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* \version disabled
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* \copyright Copyright (c) 2013 Infineon Technologies AG. All rights reserved.
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*
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*
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* IMPORTANT NOTICE
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*
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*
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* Use of this file is subject to the terms of use agreed between (i) you or
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* the company in which ordinary course of business you are acting and (ii)
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* Infineon Technologies AG or its licensees. If and as long as no such
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* terms of use are agreed, use of this file is subject to following:
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* Boost Software License - Version 1.0 - August 17th, 2003
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* Permission is hereby granted, free of charge, to any person or
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* organization obtaining a copy of the software and accompanying
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* documentation covered by this license (the "Software") to use, reproduce,
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* display, distribute, execute, and transmit the Software, and to prepare
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* derivative works of the Software, and to permit third-parties to whom the
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* Software is furnished to do so, all subject to the following:
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* The copyright notices in the Software and this entire statement, including
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* the above license grant, this restriction and the following disclaimer, must
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* be included in all copies of the Software, in whole or in part, and all
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* derivative works of the Software, unless such copies or derivative works are
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* solely in the form of machine-executable object code generated by a source
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* language processor.
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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* SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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* FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* \defgroup library_srvsw_sysse_math_lut_lsincos Linear trigonometric Look-ups
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* \ingroup library_srvsw_sysse_math_f32_lut
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*
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*/
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#ifndef IFX_LUTLSINCOSF32_H
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#define IFX_LUTLSINCOSF32_H
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//________________________________________________________________________________________
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#include "SysSe/Math/IFX_Cf32.h"
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#include "Ifx_Lut.h"
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#include "Ifx_LutIndexedLinearF32.h"
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//________________________________________________________________________________________
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/**
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* \brief Look-up table for sin */
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IFX_EXTERN const Ifx_LutIndexedLinearF32 Ifx_g_LutLSincosF32;
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/**
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* \brief Sine lookup function
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* \param fxpAngle 0 .. (IFX_LUT_ANGLE_RESOLUTION - 1)
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* \return sin(2*IFX_PI*fxpAngle/IFX_LUT_ANGLE_RESOLUTION)
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* \ingroup library_srvsw_sysse_math_lut_lsincos
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*/
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IFX_INLINE float32 Ifx_LutLSincosF32_sin(Ifx_Lut_FxpAngle fxpAngle)
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{
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fxpAngle = fxpAngle & (IFX_LUT_ANGLE_RESOLUTION - 1);
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return Ifx_LutIndexedLinearF32_search(&Ifx_g_LutLSincosF32, fxpAngle);
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}
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/**
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* \brief Cosine lookup function
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* \param fxpAngle 0 .. (IFX_LUT_ANGLE_RESOLUTION - 1), which represents 0 .. 2*IFX_PI
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* \return cos(2*IFX_PI*fxpAngle/IFX_LUT_ANGLE_RESOLUTION)
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* \ingroup library_srvsw_sysse_math_lut_lsincos
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*/
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IFX_INLINE float32 Ifx_LutLSincosF32_cos(Ifx_Lut_FxpAngle fxpAngle)
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{
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return Ifx_LutLSincosF32_sin((IFX_LUT_ANGLE_PI / 2) - fxpAngle);
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}
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/**
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* \brief Sine and Cosine lookup function
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* \param fxpAngle 0 .. (IFX_LUT_ANGLE_RESOLUTION - 1), which represents 0 .. 2*IFX_PI
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* \retval real = cos(2*IFX_PI*fxpAngle/IFX_LUT_ANGLE_RESOLUTION)
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* \retval imag = sin(2*IFX_PI*fxpAngle/IFX_LUT_ANGLE_RESOLUTION)
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* \ingroup library_srvsw_sysse_math_lut_lsincos
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*/
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IFX_INLINE cfloat32 Ifx_LutLSincosF32_cossin(Ifx_Lut_FxpAngle fxpAngle)
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{
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cfloat32 result;
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result.imag = Ifx_LutLSincosF32_sin(fxpAngle);
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result.real = Ifx_LutLSincosF32_sin((IFX_LUT_ANGLE_PI / 2) - fxpAngle);
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return result;
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}
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//________________________________________________________________________________________
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#endif
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