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177 lines
6.9 KiB
C
177 lines
6.9 KiB
C
/******************************************************************************
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*
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* (c) Copyright 2009, Freescale & STMicroelectronics
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*
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***************************************************************************//*!
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*
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* @file SWLIBS_Defines.h
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*
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* @author r63172
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*
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* @version 1.0.1.0
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*
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* @date Dec-6-2012
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*
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* @brief Defines and common Macros definition file.
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*
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*******************************************************************************
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*
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******************************************************************************/
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#ifndef _SWLIBS_DEFINES_H
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#define _SWLIBS_DEFINES_H
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#include "SWLIBS_Typedefs.h"
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/******************************************************************************
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* Defines and macros (scope: module-local)
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******************************************************************************/
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/*! If USE_ASM macro is enabled then, if existing, an assembly version of
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* the functions are used */
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//#define USE_ASM
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/*! If USE_FRAC32_ARITHMETIC macro is enabled then, 32bit arithmetic is used
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* for intermediate calculations, achieving best possible calculation accuracy.*/
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#define USE_FRAC32_ARITHMETIC
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/*! Constant representing the maximal negative value of a signed fixed point 16-bit fractional
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* number eq -1.0 */
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#define SFRACT_MIN (-1.0)
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/*! Constant representing the maximal positive value of a signed fixed point 16-bit fractional
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* number eq 0.999969482421875 */
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#define SFRACT_MAX (0.999969482421875)
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/*! Constant representing the maximal negative value of a signed fixed point 32-bit fractional
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* number eq -1.0 */
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#define FRACT_MIN (-1.0)
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/*! Constant representing the maximal positive value of a signed fixed point 32-bit fractional
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* number eq 0.9999999995343387126922607421875 */
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#define FRACT_MAX (0.9999999995343387126922607421875)
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/*! Constant representing the maximal positive value of a signed fixed point 16-bit integer
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* number eq \f$ 2^{16-1}-1 = \f$ 0x7fff. */
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#ifndef INT16_MAX
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#define INT16_MAX ((Word16) 0x7fff)
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#endif
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/*! Constant representing the maximal negative value of a signed fixed point 16-bit integer
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* number eq \f$ -2^{16-1} = \f$ 0x8000. */
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#ifndef INT16_MIN
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#define INT16_MIN ((Word16) 0x8000)
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#endif
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/*! Constant representing the maximal positive value of a signed fixed point 32-bit integer
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* number eq \f$ 2^{32-1}-1 = \f$ 0x7fff ffff. */
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#ifndef INT32_MAX
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#define INT32_MAX ((Word32) 0x7fffffff)
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#endif
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/*! Constant representing the maximal negative value of a signed fixed point 32-bit integer
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* number eq \f$ -2^{32-1} = \f$ 0x8000 0000. */
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#ifndef INT32_MIN
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#define INT32_MIN ((Word32) 0x80000000)
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#endif
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/*! Macro converting a signed fractional [-1,1) number into a fixed point 16-bit
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* number in the format Q1.15. */
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#define FRAC16(x) ((Frac16) ((x) < (SFRACT_MAX) ? ((x) >= SFRACT_MIN ? (x)*0x8000 : 0x8000) : 0x7fff))
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/*! Macro converting a signed fractional [-1,1) number into a fixed point 32-bit
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* number in the format Q1.31. */
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#define FRAC32(x) ((Frac32) ((x) < (FRACT_MAX) ? ((x) >= FRACT_MIN ? (x)*0x80000000 : 0x80000000) : 0x7fffffff))
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/*! Type casting - a signed 16-bit fractional value cast as a signed 16-bit integer */
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#define F16TOINT16(x) ((Word16) (x))
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/*! Type casting - the lower 16 bits of a signed fractional 32-bit fractional value cast
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* as a signed integer 16-bit integer */
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#define F32TOINT16(x) ((Word16) (x))
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/*! Type casting - the lower 16 bits of a signed fractional 64-bit fractional value cast
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* as a signed integer 16-bit integer */
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#define F64TOINT16(x) ((Word16) (x))
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/*! Type casting - a signed 16-bit fractional value cast as a signed 32-bit
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* integer, the value placed at the lower 16 bits of the 32-bit result */
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#define F16TOINT32(x) ((Word32) (x))
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/*! Type casting - a signed 32-bit fractional value cast as a signed
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* 32-bit integer */
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#define F32TOINT32(x) ((Word32) (x))
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/*! Type casting - lower 32 bits of a signed 64-bit fractional value cast as a
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* signed 32-bit integer */
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#define F64TOINT32(x) ((Word32) (x))
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/*! Type casting - a signed 16-bit fractional value cast as a signed 64-bit
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* integer, the value placed at the lower 16 bits of the 64-bit result */
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#define F16TOINT64(x) ((Word64) (x))
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/*! Type casting - a signed 32-bit fractional value cast as a signed 64-bit integer,
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* the value placed at the lower 32 bits of the 64-bit result */
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#define F32TOINT64(x) ((Word64) (x))
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/*! Type casting - a signed 64-bit fractional value cast as a signed
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* 64-bit integer */
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#define F64TOINT64(x) ((Word64) (x))
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/*! Type casting - a signed 16-bit integer value cast as a signed
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* 16-bit fractional */
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#define INT16TOF16(x) ((Frac16) (x))
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/*! Type casting - a signed 16-bit integer value cast as a signed 32-bit
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* fractional, the value placed at the lower 16 bits of the 32-bit result */
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#define INT16TOF32(x) ((Frac32) (x))
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/*! Type casting - the lower 16 bits of a signed 32-bit integer value cast as a
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* signed 16-bit fractional */
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#define INT32TOF16(x) ((Frac16) (x))
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/*! Type casting - a signed 32-bit integer value cast as a signed fractional
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* 32-bit fractional */
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#define INT32TOF32(x) ((Frac32) (x))
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/*! Type casting - the lower 16 bits of a signed 64-bit integer value cast as a
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* signed 16-bit fractional */
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#define INT64TOF16(x) ((Frac16) (x))
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/*! Type casting - the lower 32 bits of a signed 64-bit integer value cast as a
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* signed 32-bit fractional */
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#define INT64TOF32(x) ((Frac32) (x))
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/*! One over sqrt(3) with a 16-bit result, the result rounded for a better
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* precision, i.e. \f$ round(1/sqrt(3)*2^{15}) \f$ */
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#define F16_1_DIVBY_SQRT3 ((Frac16) 0x49E7)
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/*! One over sqrt(3) with a 32-bit result, the result rounded for a better
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* precision, i.e. \f$ round(1/sqrt(3)*2^{31}) \f$ */
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#define F32_1_DIVBY_SQRT3 ((Frac32) 0x49E69D16)
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/*! Sqrt(3) divided by two with a 16-bit result, the result rounded for a better
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* precision, i.e. \f$ round(sqrt(3)/2*2^{15}) \f$ */
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#define F16_SQRT3_DIVBY_2 ((Frac16) 0x6EDA)
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/*! Sqrt(3) divided by two with a 32-bit result, the result rounded for a better
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* precision, i.e. \f$ round(sqrt(3)/2*2^{31}) \f$ */
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#define F32_SQRT3_DIVBY_2 ((Frac32) 0x6ED9EBA1)
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/******************************************************************************
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* Typedefs and structures (scope: module-local)
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******************************************************************************/
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/******************************************************************************
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* Exported variables
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******************************************************************************/
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/******************************************************************************
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* Exported function prototypes
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******************************************************************************/
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/******************************************************************************
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* Inline functions
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******************************************************************************/
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#endif /* _SWLIBS_DEFINES_H */
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