casacore::QMath_global_functions_Quantum_mathematical_operations Struct Reference

Mathematical operations for the Quantum class. More...

#include <QMath.h>

Public Member Functions
template<class Qtype >
Quantum< Qtype >	min (const Quantum< Qtype > &left, const Quantum< Qtype > &other)
	min and max More...
template<class Qtype >
Quantum< Qtype >	max (const Quantum< Qtype > &left, const Quantum< Qtype > &other)
template<class Qtype >
Quantum< Qtype >	operator+ (const Quantum< Qtype > &left, const Qtype &other)
	Unary operations. More...
template<class Qtype >
Quantum< Qtype >	operator+ (const Qtype &left, const Quantum< Qtype > &other)
template<class Qtype >
Quantum< Qtype >	operator- (const Quantum< Qtype > &left, const Qtype &other)
template<class Qtype >
Quantum< Qtype >	operator- (const Qtype &left, const Quantum< Qtype > &other)
template<class Qtype >
Quantum< Qtype >	operator* (const Quantum< Qtype > &left, const Qtype &other)
template<class Qtype >
Quantum< Qtype >	operator* (const Qtype &left, const Quantum< Qtype > &other)
template<class Qtype >
Quantum< Qtype >	operator/ (const Quantum< Qtype > &left, const Qtype &other)
template<class Qtype >
Quantum< Qtype >	operator/ (const Qtype &left, const Quantum< Qtype > &other)
template<class Qtype >
Quantum< Qtype >	pow (const Quantum< Qtype > &left, Int p)
	Some useful arithmetic (linear) functions. More...
template<class Qtype >
Quantum< Qtype >	root (const Quantum< Qtype > &left, Int p)
template<class Qtype >
Quantum< Qtype >	sqrt (const Quantum< Qtype > &left)
template<class Qtype >
Quantum< Qtype >	abs (const Quantum< Qtype > &left)
template<class Qtype >
Quantum< Qtype >	ceil (const Quantum< Qtype > &left)
template<class Qtype >
Quantum< Qtype >	floor (const Quantum< Qtype > &left)
template<class Qtype >
Quantum< Qtype >	sin (const Quantum< Qtype > &left)
	Trigonometric and exponential functions For direct functions input should be in angles, output will be empty units. More...
template<class Qtype >
Quantum< Qtype >	cos (const Quantum< Qtype > &left)
template<class Qtype >
Quantum< Qtype >	tan (const Quantum< Qtype > &left)
template<class Qtype >
Quantum< Qtype >	asin (const Quantum< Qtype > &left)
template<class Qtype >
Quantum< Qtype >	acos (const Quantum< Qtype > &left)
template<class Qtype >
Quantum< Qtype >	atan (const Quantum< Qtype > &left)
template<class Qtype >
Quantum< Qtype >	atan2 (const Quantum< Qtype > &left, const Quantum< Qtype > &other)
template<class Qtype >
Quantum< Qtype >	atan2 (const Quantum< Qtype > &left, const Qtype &other)
template<class Qtype >
Quantum< Qtype >	atan2 (const Qtype &left, const Quantum< Qtype > &other)
template<class Qtype >
Quantum< Qtype >	log (const Quantum< Qtype > &left)
template<class Qtype >
Quantum< Qtype >	log10 (const Quantum< Qtype > &left)
template<class Qtype >
Quantum< Qtype >	exp (const Quantum< Qtype > &left)
Int	ceil (const Int &val)
	Functions to implement integer ceil/floor and others. More...
Int	floor (const Int &val)
Array< Complex >	operator* (const Array< Complex > &in, Double f)
Array< Complex >	operator/ (const Array< Complex > &in, Double f)
Array< DComplex >	operator* (const Array< DComplex > &in, Double f)
Array< DComplex >	operator/ (const Array< DComplex > &in, Double f)
Array< Float >	operator* (const Array< Float > &in, Double f)
Array< Float >	operator/ (const Array< Float > &in, Double f)
Array< Int >	operator* (const Array< Int > &in, Double f)
Array< Int >	operator/ (const Array< Int > &in, Double f)

Detailed Description

Mathematical operations for the Quantum class.

Intended use:

Public interface

Review Status

Reviewed By:

UNKNOWN

Date Reviewed:

before2004/08/25

Test programs:

tQuantum

Prerequisite

• Unit
• Quantum

Etymology

QMath derived from Quantum Mathematical functions

Synopsis

Quantities are values with a unit. Their basic specification can be one of two forms:

Quantity(Double value, String unit);   // or: Unit unit
Quantum<Type> (Type value, String unit)        // or: Unit unit

A unit is a string of known unit fields separated by 'space' or '.' (to indicate multiply) or '/' (to indicate divide). See the Unit class for details. Example: km/s/(Mpc.s)2 is identical to km.s-1.Mpc-2.s-2

This file defines the mathematical operations that can be done on Quantum<T>.

They can be subdivided into various groupings:

• Unary operations
• In place arithmetic functions: left hand side changed in place
• Arithmetic functions: return <tt>Quantum<T></tt>
• Some useful arithmetic (linear) functions
• Trigonometric functions
• Functions to implement integer ceil/floor

The operations/functions defined are:

• unary +(Quantum<T>)
• unary -(Quantum<T>)
• +=Quantum<T>; +=T; -=Quantum<T>; -=T;
• *=Quantum<T>, *=T; /=Quantum<T>; /=T;
• +/-/*// for Quantum<T>,Quantum<T>; T,Quantum<T>; Quantum<T>,T;
• abs, ceil, floor(Quantum<T>)
• pow(Quantum<T>, Int);
• sin, cos, tan(Quantum<T>) with proper unit handling
• asin, acos, atan, atan2(Quantum<T>) with proper unit handling
• log, log10, exp, root, sqrt with proper unit handling

Warning: Some operators are implemented as member functions, and can be found in the Quantum class;

Motivation

To separate the mathematical operations from Quantum.

To Do

• Some inlining (did not work first go)

Definition at line 120 of file QMath.h.

Member Function Documentation

template<class Qtype >

Quantum<Qtype> casacore::QMath_global_functions_Quantum_mathematical_operations::abs

(

const Quantum< Qtype > &

left

)

template<class Qtype >

Quantum<Qtype> casacore::QMath_global_functions_Quantum_mathematical_operations::acos

(

const Quantum< Qtype > &

left

)

template<class Qtype >

Quantum<Qtype> casacore::QMath_global_functions_Quantum_mathematical_operations::asin

(

const Quantum< Qtype > &

left

)

template<class Qtype >

Quantum<Qtype> casacore::QMath_global_functions_Quantum_mathematical_operations::atan

(

const Quantum< Qtype > &

left

)

template<class Qtype >

Quantum<Qtype> casacore::QMath_global_functions_Quantum_mathematical_operations::atan2	(	const Quantum< Qtype > &	left,
		const Quantum< Qtype > &	other
	)

template<class Qtype >

Quantum<Qtype> casacore::QMath_global_functions_Quantum_mathematical_operations::atan2	(	const Quantum< Qtype > &	left,
		const Qtype &	other
	)

template<class Qtype >

Quantum<Qtype> casacore::QMath_global_functions_Quantum_mathematical_operations::atan2	(	const Qtype &	left,
		const Quantum< Qtype > &	other
	)

template<class Qtype >

Quantum<Qtype> casacore::QMath_global_functions_Quantum_mathematical_operations::ceil

(

const Quantum< Qtype > &

left

)

Int casacore::QMath_global_functions_Quantum_mathematical_operations::ceil

(

const Int &

val

)

Functions to implement integer ceil/floor and others.

template<class Qtype >

Quantum<Qtype> casacore::QMath_global_functions_Quantum_mathematical_operations::cos

(

const Quantum< Qtype > &

left

)

template<class Qtype >

Quantum<Qtype> casacore::QMath_global_functions_Quantum_mathematical_operations::exp

(

const Quantum< Qtype > &

left

)

template<class Qtype >

Quantum<Qtype> casacore::QMath_global_functions_Quantum_mathematical_operations::floor

(

const Quantum< Qtype > &

left

)

Int casacore::QMath_global_functions_Quantum_mathematical_operations::floor

(

const Int &

val

)

template<class Qtype >

Quantum<Qtype> casacore::QMath_global_functions_Quantum_mathematical_operations::log

(

const Quantum< Qtype > &

left

)

template<class Qtype >

Quantum<Qtype> casacore::QMath_global_functions_Quantum_mathematical_operations::log10

(

const Quantum< Qtype > &

left

)

template<class Qtype >

Quantum<Qtype> casacore::QMath_global_functions_Quantum_mathematical_operations::max	(	const Quantum< Qtype > &	left,
		const Quantum< Qtype > &	other
	)

template<class Qtype >

Quantum<Qtype> casacore::QMath_global_functions_Quantum_mathematical_operations::min	(	const Quantum< Qtype > &	left,
		const Quantum< Qtype > &	other
	)

min and max

template<class Qtype >

Quantum<Qtype> casacore::QMath_global_functions_Quantum_mathematical_operations::operator*	(	const Quantum< Qtype > &	left,
		const Qtype &	other
	)

template<class Qtype >

Quantum<Qtype> casacore::QMath_global_functions_Quantum_mathematical_operations::operator*	(	const Qtype &	left,
		const Quantum< Qtype > &	other
	)

Array<Complex> casacore::QMath_global_functions_Quantum_mathematical_operations::operator*	(	const Array< Complex > &	in,
		Double	f
	)

Array<DComplex> casacore::QMath_global_functions_Quantum_mathematical_operations::operator*	(	const Array< DComplex > &	in,
		Double	f
	)

Array<Float> casacore::QMath_global_functions_Quantum_mathematical_operations::operator*	(	const Array< Float > &	in,
		Double	f
	)

Array<Int> casacore::QMath_global_functions_Quantum_mathematical_operations::operator*	(	const Array< Int > &	in,
		Double	f
	)

template<class Qtype >

Quantum<Qtype> casacore::QMath_global_functions_Quantum_mathematical_operations::operator+	(	const Quantum< Qtype > &	left,
		const Qtype &	other
	)

Unary operations.

See Quantum class In place arithmetic functions: left hand side changed in place

Thrown Exceptions

• AipsError if non-conforming units (+ and -)
• AipsError if illegal result unit (* and /; programming error)

See Quantum class Arithmetic operators: return Quantum<T>

Thrown Exceptions

• AipsError if non-conforming units (+ and -)

See Quantum class for equal argument types

template<class Qtype >

Quantum<Qtype> casacore::QMath_global_functions_Quantum_mathematical_operations::operator+	(	const Qtype &	left,
		const Quantum< Qtype > &	other
	)

template<class Qtype >

Quantum<Qtype> casacore::QMath_global_functions_Quantum_mathematical_operations::operator-	(	const Quantum< Qtype > &	left,
		const Qtype &	other
	)

template<class Qtype >

Quantum<Qtype> casacore::QMath_global_functions_Quantum_mathematical_operations::operator-	(	const Qtype &	left,
		const Quantum< Qtype > &	other
	)

template<class Qtype >

Quantum<Qtype> casacore::QMath_global_functions_Quantum_mathematical_operations::operator/	(	const Quantum< Qtype > &	left,
		const Qtype &	other
	)

template<class Qtype >

Quantum<Qtype> casacore::QMath_global_functions_Quantum_mathematical_operations::operator/	(	const Qtype &	left,
		const Quantum< Qtype > &	other
	)

Array<Complex> casacore::QMath_global_functions_Quantum_mathematical_operations::operator/	(	const Array< Complex > &	in,
		Double	f
	)

Array<DComplex> casacore::QMath_global_functions_Quantum_mathematical_operations::operator/	(	const Array< DComplex > &	in,
		Double	f
	)

Array<Float> casacore::QMath_global_functions_Quantum_mathematical_operations::operator/	(	const Array< Float > &	in,
		Double	f
	)

Array<Int> casacore::QMath_global_functions_Quantum_mathematical_operations::operator/	(	const Array< Int > &	in,
		Double	f
	)

template<class Qtype >

Quantum<Qtype> casacore::QMath_global_functions_Quantum_mathematical_operations::pow	(	const Quantum< Qtype > &	left,
		Int	p
	)

Some useful arithmetic (linear) functions.

Return the Quantum raised to specified power; take the (integer) root; and integerization

Thrown Exceptions

• AipsError if power exponent too large (abs > 100)
• AipsError if root exponent zero

template<class Qtype >

Quantum<Qtype> casacore::QMath_global_functions_Quantum_mathematical_operations::root	(	const Quantum< Qtype > &	left,
		Int	p
	)

template<class Qtype >

Quantum<Qtype> casacore::QMath_global_functions_Quantum_mathematical_operations::sin

(

const Quantum< Qtype > &

left

)

Trigonometric and exponential functions For direct functions input should be in angles, output will be empty units.

For inverse functions input should be empty, output in radians

Thrown Exceptions

• AipsError if incorrect units. I.e. non-angle for direct functions, non-empty for inverse functions; non-empty for exp and log

template<class Qtype >

Quantum<Qtype> casacore::QMath_global_functions_Quantum_mathematical_operations::sqrt

(

const Quantum< Qtype > &

left

)

template<class Qtype >

Quantum<Qtype> casacore::QMath_global_functions_Quantum_mathematical_operations::tan

(

const Quantum< Qtype > &

left

)

---

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

• casa/casacore/casa/Quanta/QMath.h