itpp::CFixed< w, e, o, q > Class Template Reference
[Fixed-point Module]

Templated complex fixed-point data type. More...

#include <cfixed.h>

List of all members.

Public Member Functions
	CFixed (double r=0.0, double i=0.0, int s=0, Stat *ptr=0)
	Default constructor.
	CFixed (std::complex< double > x, double, int s=0, Stat *ptr=0)
	Constructor.
	CFixed (Stat *ptr)
	Constructor.
	CFixed (const Fix &r, const Fix &i=0.0, Stat *ptr=0)
	Constructor.
	CFixed (const CFix &x, double, Stat *ptr=0)
	Constructor.
virtual	~CFixed ()
	Destructor.
CFixed &	operator= (const CFix &x)
	Assignment from CFix.
CFixed &	operator= (const Fix &x)
	Assignment from Fix.
CFixed &	operator= (const std::complex< double > &x)
	Assignment from complex<double>. Fractional part is truncated.
CFixed &	operator= (int x)
	Assignment from int.
CFix &	operator+= (const CFix &x)
	Addition of CFix.
CFix &	operator+= (const Fix &x)
	Addition of Fix.
CFix &	operator+= (const int x)
	Addition of int.
CFix &	operator-= (const CFix &x)
	Subtraction of CFix.
CFix &	operator-= (const Fix &x)
	Subtraction of Fix.
CFix &	operator-= (const int x)
	Subtraction of int.
CFix &	operator*= (const CFix &x)
	Multiplication with CFix. Temporary variables use the maximum word length (64 bits).
CFix &	operator*= (const Fix &x)
	Multiplication with Fix. Temporary variables use the maximum word length (64 bits).
CFix &	operator*= (const int x)
	Multiplication with int. Temporary variables use the maximum word length (64 bits).
CFix &	operator/= (const CFix &x)
	Division with CFix using quantization mode TRN. Temporary variables use the maximum word length (64 bits).
CFix &	operator/= (const Fix &x)
	Division with Fix using quantization mode TRN. Temporary variables use the maximum word length (64 bits).
CFix &	operator/= (const int x)
	Division with int using quantization mode TRN. Temporary variables use the maximum word length (64 bits).
CFix	operator- () const
	Unary negative of CFix.
CFix &	operator<<= (const int n)
	Left shift n bits.
CFix &	operator>>= (const int n)
	Right shift n bits using quantization mode qmode (constructor argument).
void	set (double real, double imag, int n)
	Set to (real + i*imag) * pow2(n) using quantization mode qmode (constructor argument).
void	set (double real, double imag, int n, q_mode q)
	Set to (real + i*imag) * pow2(n) using quantization mode q (function argument).
void	set (const std::complex< double > &x, int n)
	Set to x * pow2(n) using quantization mode qmode (constructor argument).
void	set (const std::complex< double > &x, int n, q_mode q)
	Set to x * pow2(n) using quantization mode q (function argument).
void	set_re (fixrep x)
	Set data representation for real part (mainly for internal use since it reveals the representation type).
void	set_im (fixrep x)
	Set data representation for imaginary part (mainly for internal use since it reveals the representation type).
void	lshift (int n)
	Left shift n bits.
void	rshift (int n)
	Right shift n bits using quantization mode qmode (constructor argument).
void	rshift (int n, q_mode q)
	Right shift n bits using quantization mode q (function argument).
virtual void	print () const
	Print restrictions.
fixrep	get_re () const
	Get data representation for real part (mainly for internal use since it reveals the representation type).
fixrep	get_im () const
	Get data representation for imaginary part (mainly for internal use since it reveals the representation type).
std::complex< double >	unfix () const
	Conversion to std::complex<double>.
	operator std::complex< double > () const
	Conversion to std::complex<double>.
void	set_shift (int s)
	Set shift (without shifting).
int	get_shift () const
	Get shift.
int	get_wordlen () const
	Get word length.
e_mode	get_e_mode () const
	Get sign encoding mode.
o_mode	get_o_mode () const
	Get overflow mode.
q_mode	get_q_mode () const
	Get quantization mode.
output_mode	get_output_mode () const
	Get output mode.
fixrep	get_max () const
	Get maximum value of data representation.
fixrep	get_min () const
	Get minimum value of data representation.
Static Public Member Functions
static void	set_output_mode (output_mode o)
	Set output mode to OUTPUT_FIX, OUTPUT_FIX_SHIFT, OUTPUT_FLOAT or OUTPUT_FLOAT_SHIFT. Static member function.
static void	set_output_mode (std::string o)
	Set output mode to "OUTPUT_FIX", "OUTPUT_FIX_SHIFT", "OUTPUT_FLOAT" or "OUTPUT_FLOAT_SHIFT". Static member function.
Protected Member Functions
void	init ()
	Calculate help variables min, max and n_unused_bits.
fixrep	apply_o_mode (fixrep x) const
	Handle overflows using overflow mode omode and make call to statistics object (if any).
fixrep	scale_and_apply_modes (double x) const
	Convert from double to fixrep using shift and quantization mode qmode, then call limit().
fixrep	scale_and_apply_modes (double x, q_mode q) const
	Convert from double to fixrep using shift and quantization mode q, then call limit().
fixrep	rshift_and_apply_q_mode (fixrep x, int n) const
	Right shift n bits using quantization mode qmode and make call to statistics object (if any).
fixrep	rshift_and_apply_q_mode (fixrep x, int n, q_mode q) const
	Right shift n bits using quantization mode q and make call to statistics object (if any).
Protected Attributes
fixrep	re
	Real data part.
fixrep	im
	Imaginary data part.
int	shift
	Accumulated bitshift (positive means left-shifted, negative means right-shifted).
int	wordlen
	Word length.
e_mode	emode
	Sign encoding mode.
o_mode	omode
	Overflow mode.
q_mode	qmode
	Quantization mode.
Stat *	stat_ptr
	Pointer to statistics object.
fixrep	min
	Minimum allowed value (help variable to speed up calculations).
fixrep	max
	Maximum allowed value (help variable to speed up calculations).
int	n_unused_bits
	Number of unused (MSB) bits (help variable to speed up calculations).
Friends
int	assert_shifts (const CFix &x, const CFix &y)
	Check that x.shift==y.shift OR x==0 OR y==0 and return the shift (for the non-zero argument).
int	assert_shifts (const CFix &x, const Fix &y)
	Check that x.shift==y.shift OR x==0 OR y==0 and return the shift (for the non-zero argument).
int	assert_shifts (const CFix &x, int y)
	Check that x.shift==0 OR x==0 OR y==0 and return x.shift.

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Detailed Description

template<int w, e_mode e = TC, o_mode o = WRAP, q_mode q = TRN>
class itpp::CFixed< w, e, o, q >

Templated complex fixed-point data type.

See the Detailed Description in the Fixed-point Module module.

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The documentation for this class was generated from the following file:

• cfixed.h