"The place where you learn linux"

Create an AccountHome | Submit News | Your Account

 Communication Feedback Forums Private Messages Surveys

 Who's Online There are currently, 176 guest(s) and 0 member(s) that are online.You are an Anonymous user. You can register for free by clicking here

```

```

## SYNOPSIS

```       #include <complex.h>

```

## DESCRIPTION

```       Complex numbers are numbers of the form a+b*i, where a and
b are real numbers and i = sqrt(-1), so that i*i = -1.
There are other ways to represent that number. Because the
point z=(a,b) is on a plane you can also define that point
with   distance   and   angle   (r,phi).     The    number
z=r*(cos(phi)+i*sin(phi))  can  also be described as expo­
nential function z=r*exp(i*phi) as found by Euler.

The basic operations are defined on z  =  a+b*i  and  w  =
c+d*i as:

addition: z+w = (a+c) + (b+d)*i

multiplication: z*w = (a*c - b*d) + (a*d + b*c)*i

division:  z/w  =  ((a*c  +  b*d)/(c*c  +  d*d)) + ((b*c -
a*d)/(c*c + d*d))*i

Nearly  all  math  function have a complex counterpart but
there are some complex only functions.

```

## EXAMPLE

```       Your C-compiler can work with complex numbers if  it  sup­
ports the C99 standard.  Link with -lm. The imaginary unit
is represented by I.

/* check that exp(i*pi) == -1 */
#include <math.h>   /* for atan */
#include <complex.h>
main() {
double pi = 4*atan(1);
complex z = cexp(I*pi);
printf("%f+%f*i\n", creal(z), cimag(z));
}

```

```       cabs(3), carg(3), cexp(3), cimag(3), creal(3)

2002-07-28                 complex(5)
```

 Show your Support for the Linux Tutorial Purchase one of the products from our new online shop. For each product you purchase, the Linux Tutorial gets a portion of the proceeds to help keep us going.

 Login NicknamePasswordSecurity Code Type Security Code Don't have an account yet? You can create one. As a registered user you have some advantages like theme manager, comments configuration and post comments with your name.

 Help if you can!

 Amazon Wish List Support us by giving us a gift!

 Did You Know? You can help in many different ways.

 Friends