fast_math_functions.h File Reference

Macros
#define	FAST_MATH_TABLE_SIZE   512
	Macros required for SINE and COSINE Fast math approximations. More...
#define	FAST_MATH_Q31_SHIFT   (32 - 10)
#define	FAST_MATH_Q15_SHIFT   (16 - 10)
#define	PI   3.14159265358979f
#define	PI_F64   3.14159265358979323846

Functions
float32_t	arm_sin_f32 (float32_t x)
	Fast approximation to the trigonometric sine function for floating-point data. More...
q31_t	arm_sin_q31 (q31_t x)
	Fast approximation to the trigonometric sine function for Q31 data. More...
q15_t	arm_sin_q15 (q15_t x)
	Fast approximation to the trigonometric sine function for Q15 data. More...
float32_t	arm_cos_f32 (float32_t x)
	Fast approximation to the trigonometric cosine function for floating-point data. More...
q31_t	arm_cos_q31 (q31_t x)
	Fast approximation to the trigonometric cosine function for Q31 data. More...
q15_t	arm_cos_q15 (q15_t x)
	Fast approximation to the trigonometric cosine function for Q15 data. More...
void	arm_vlog_f32 (const float32_t *pSrc, float32_t *pDst, uint32_t blockSize)
	Floating-point vector of log values. More...
void	arm_vlog_f64 (const float64_t *pSrc, float64_t *pDst, uint32_t blockSize)
	Floating-point vector of log values. More...
void	arm_vlog_q31 (const q31_t *pSrc, q31_t *pDst, uint32_t blockSize)
	q31 vector of log values. More...
void	arm_vlog_q15 (const q15_t *pSrc, q15_t *pDst, uint32_t blockSize)
	q15 vector of log values. More...
void	arm_vexp_f32 (const float32_t *pSrc, float32_t *pDst, uint32_t blockSize)
	Floating-point vector of exp values. More...
void	arm_vexp_f64 (const float64_t *pSrc, float64_t *pDst, uint32_t blockSize)
	Floating-point vector of exp values. More...
arm_status	arm_sqrt_f32 (const float32_t in, float32_t *pOut)
	Floating-point square root function. More...
arm_status	arm_sqrt_q31 (q31_t in, q31_t *pOut)
	Q31 square root function. More...
arm_status	arm_sqrt_q15 (q15_t in, q15_t *pOut)
	Q15 square root function. More...
arm_status	arm_divide_q15 (q15_t numerator, q15_t denominator, q15_t *quotient, int16_t *shift)
	Fixed point division. More...
arm_status	arm_divide_q31 (q31_t numerator, q31_t denominator, q31_t *quotient, int16_t *shift)
	Fixed point division. More...
arm_status	arm_atan2_f32 (float32_t y, float32_t x, float32_t *result)
	Arc tangent in radian of y/x using sign of x and y to determine right quadrant. More...
arm_status	arm_atan2_q31 (q31_t y, q31_t x, q31_t *result)
	Arc tangent in radian of y/x using sign of x and y to determine right quadrant. More...
arm_status	arm_atan2_q15 (q15_t y, q15_t x, q15_t *result)
	Arc tangent in radian of y/x using sign of x and y to determine right quadrant. More...

Macro Definition Documentation

FAST_MATH_Q15_SHIFT

#define FAST_MATH_Q15_SHIFT   (16 - 10)

FAST_MATH_Q31_SHIFT

#define FAST_MATH_Q31_SHIFT   (32 - 10)

FAST_MATH_TABLE_SIZE

#define FAST_MATH_TABLE_SIZE   512

PI

#define PI   3.14159265358979f

PI_F64

#define PI_F64   3.14159265358979323846

Function Documentation

arm_vexp_f64()

void arm_vexp_f64	(	const float64_t *	pSrc,
		float64_t *	pDst,
		uint32_t	blockSize
	)

Parameters

[in]	pSrc	points to the input vector
[out]	pDst	points to the output vector
[in]	blockSize	number of samples in each vector

Returns

none

arm_vlog_f64()

void arm_vlog_f64	(	const float64_t *	pSrc,
		float64_t *	pDst,
		uint32_t	blockSize
	)

Parameters

[in]	pSrc	points to the input vector
[out]	pDst	points to the output vector
[in]	blockSize	number of samples in each vector

Returns

none