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Home » U++ Library support » U++ Core » Complex numbers..How to use in upp??
Complex numbers..How to use in upp?? [message #33821] Fri, 16 September 2011 13:42 Go to next message
Monty.mvh is currently offline  Monty.mvh
Messages: 31
Registered: July 2011
Location: Bangalore
Member
Hi,
I need to use complex numbers for some mathematical calculations.
Can anyone guide me how to use it ...
Re: Complex numbers..How to use in upp?? [message #33827 is a reply to message #33821] Fri, 16 September 2011 22:59 Go to previous messageGo to next message
281264 is currently offline  281264
Messages: 270
Registered: June 2010
Location: Spain
Experienced Member
Hi,

Check complex class in C++ by including #include<complex> in your header file or .cpp file.

Here is a simple example:

// Demonstrate complex class
#include <iostream>
#include <complex>
using namespace std;

int main()
{
	complex<double> complex_01(10, 20);
	complex<double> complex_02(40, -3);
	cout << complex_01 <<endl;
	cout << complex_02 << endl;
	complex<double> complex_03 = complex_01 + complex_02;
	cout << complex_03 << endl;
	return 0;
}



Cheers,

Javier
Re: Complex numbers..How to use in upp?? [message #33833 is a reply to message #33821] Sat, 17 September 2011 06:34 Go to previous messageGo to next message
Monty.mvh is currently offline  Monty.mvh
Messages: 31
Registered: July 2011
Location: Bangalore
Member

Thanks Javier,

Can i individually access real and imaginary parts.. Something like this: a[0].re =3 and a[0].im = 5
Re: Complex numbers..How to use in upp?? [message #33836 is a reply to message #33821] Sat, 17 September 2011 12:12 Go to previous messageGo to next message
dolik.rce is currently offline  dolik.rce
Messages: 1789
Registered: August 2008
Location: Czech Republic
Ultimate Contributor

There is a support for complex numbers in U++ Core: the Complex class. See uppsrc/Core/Complex.h for some details. It is based on the std::complex that Javier recommended in previous post, but adds some integration with U++, e.g. Value compatibility.

Simple usage:
#include <Core/Core.h>

using namespace Upp;

CONSOLE_APP_MAIN{
	Complex a(1,2);
	Cout() << "a = " << a << "\n";
	Cout() << "Im(a) = " << a.imag() << "\n";
	Cout() << "Re(a) = " << a.real() << "\n";
	Cout() << "|a| = " << abs(a) << "\n";
	Cout() << "2a = " << Complex(a+a) << "\n";
	Cout() << "a^2 = " << Complex(a*a) << "\n";
}


Best regards,
Honza
Re: Complex numbers..How to use in upp?? [message #33839 is a reply to message #33836] Sat, 17 September 2011 18:27 Go to previous messageGo to next message
281264 is currently offline  281264
Messages: 270
Registered: June 2010
Location: Spain
Experienced Member
Honza,

Thank you. I was not aware about this Upp class; certainly it will be useful.

Cheers,

Javier
Re: Complex numbers..How to use in upp?? [message #34457 is a reply to message #33839] Wed, 23 November 2011 10:50 Go to previous message
kohait00 is currently offline  kohait00
Messages: 939
Registered: July 2009
Location: Germany
Experienced Contributor
it's been added shortly Smile see last release infos..
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