gr_math.h File Reference

#include <gr_core_api.h>
#include <gr_complex.h>

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Functions
static bool	gr_is_power_of_2 (long x)
GR_CORE_API float	gr_fast_atan2f (float y, float x)
	Fast arc tangent using table lookup and linear interpolation.
static float	gr_fast_atan2f (gr_complex z)
static float	gr_branchless_clip (float x, float clip)
static float	gr_clip (float x, float clip)
static unsigned int	gr_binary_slicer (float x)
static unsigned int	gr_quad_45deg_slicer (float r, float i)
static unsigned int	gr_quad_0deg_slicer (float r, float i)
static unsigned int	gr_quad_45deg_slicer (gr_complex x)
static unsigned int	gr_quad_0deg_slicer (gr_complex x)
static unsigned int	gr_branchless_binary_slicer (float x)
static unsigned int	gr_branchless_quad_0deg_slicer (float r, float i)
static unsigned int	gr_branchless_quad_0deg_slicer (gr_complex x)
static unsigned int	gr_branchless_quad_45deg_slicer (float r, float i)
static unsigned int	gr_branchless_quad_45deg_slicer (gr_complex x)
static size_t	gr_p2_round_down (size_t x, size_t pow2)
static size_t	gr_p2_round_up (size_t x, size_t pow2)
static size_t	gr_p2_modulo (size_t x, size_t pow2)
static size_t	gr_p2_modulo_neg (size_t x, size_t pow2)

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Function Documentation

static unsigned int gr_binary_slicer

(

float

x

)

[inline, static]

static unsigned int gr_branchless_binary_slicer

(

float

x

)

[inline, static]

static float gr_branchless_clip	(	float	x,
		float	clip
	)		[inline, static]

static unsigned int gr_branchless_quad_0deg_slicer	(	float	r,
		float	i
	)		[inline, static]

Referenced by gr_branchless_quad_0deg_slicer().

static unsigned int gr_branchless_quad_0deg_slicer

(

gr_complex

x

)

[inline, static]

References gr_branchless_quad_0deg_slicer().

static unsigned int gr_branchless_quad_45deg_slicer	(	float	r,
		float	i
	)		[inline, static]

Referenced by gr_branchless_quad_45deg_slicer().

static unsigned int gr_branchless_quad_45deg_slicer

(

gr_complex

x

)

[inline, static]

References gr_branchless_quad_45deg_slicer().

static float gr_clip	(	float	x,
		float	clip
	)		[inline, static]

Referenced by digital_kurtotic_equalizer_cc::error(), and digital_cma_equalizer_cc::error().

static float gr_fast_atan2f

(

gr_complex

z

)

[inline, static]

References gr_fast_atan2f().

static bool gr_is_power_of_2

(

long

x

)

[inline, static]

static size_t gr_p2_modulo	(	size_t	x,
		size_t	pow2
	)		[inline, static]

Parameters:

x	any value
pow2	must be a power of 2

Returns:

x modulo pow2.

Referenced by gr_p2_modulo_neg().

static size_t gr_p2_modulo_neg	(	size_t	x,
		size_t	pow2
	)		[inline, static]

Parameters:

x	any value
pow2	must be a power of 2

Returns:

pow2 - (x modulo pow2).

References gr_p2_modulo().

static size_t gr_p2_round_down	(	size_t	x,
		size_t	pow2
	)		[inline, static]

Parameters:

x	any value
pow2	must be a power of 2

Returns:

x rounded down to a multiple of pow2.

Referenced by gr_p2_round_up().

static size_t gr_p2_round_up	(	size_t	x,
		size_t	pow2
	)		[inline, static]

Parameters:

x	any value
pow2	must be a power of 2

Returns:

x rounded up to a multiple of pow2.

References gr_p2_round_down().

static unsigned int gr_quad_0deg_slicer	(	float	r,
		float	i
	)		[inline, static]

Referenced by gr_quad_0deg_slicer().

static unsigned int gr_quad_0deg_slicer

(

gr_complex

x

)

[inline, static]

References gr_quad_0deg_slicer().

static unsigned int gr_quad_45deg_slicer

(

gr_complex

x

)

[inline, static]

References gr_quad_45deg_slicer().

static unsigned int gr_quad_45deg_slicer	(	float	r,
		float	i
	)		[inline, static]

Referenced by gr_quad_45deg_slicer().