Hi,,,
is there any possibility to install Linux in my P.C which is use Win98 without loose anything from my hard disk????
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Is it better for a newbie in this kind of OS to install Linux instead of... (5 Replies)
hi! how when i'm chattin inside com there was this chatter andi don't know what he did but he saw all my files inside my shell. what did he do? (4 Replies)
A red hat linux ftp server exists in which a file exists. My problem is I need to connect to this server from my windows xp terminal which is in the same network & retrieve the file then convert it to xcel for some data
Pls advs commands and procedure to connect to the machine...oh my god... (1 Reply)
Hello experts,
I have this complicated code that output value in between pattern and add "a string" to the front of the output.
The problems I have many pattern that are the same.
so I want to know how to get the value between 1st pattern, 2nd pattern etc.
Any suggestions?
sed -n... (14 Replies)
Hi,
One of the directory in my folder has the following persion :
drwxr-sr-x
Can any one explain this permission and how can his occur ? This folder is created with Win SCP. Any folder created with win SCP is being set to this permission only. (1 Reply)
I am confused c#t#d#s# once I learn the following :
slice 0 ...... 0 to 2520
slice 1....... 2521 to 2840
slice 6........2841 to 8891
slice 2........0 to 8891
really really confused. Please explain. (8 Replies)
Hello,
I am having a problem with Dual Booting Windows XP Pro and Linux Mint.
I have Three Hard Drives,
One Hard Drive has Linux Mint Loaded on it. When it is hooked up to the computer by itself it works great. This is an IDE Drive.
The Second Hard Drive has Window XP Pro loaded on it.... (3 Replies)
Hi All,
I'm pretty new to this so please bear with me...
I'm trying to write a bash script to first search in a file for a string of characters; if the characters exist than skip the rest of the code until you get to the last line and run that command /sbdin/ldconfig; if the string doesn't... (2 Replies)
Discussion started by: gmdune
2 Replies
LEARN ABOUT SUSE
complex
COMPLEX(7) Linux Programmer's Manual COMPLEX(7)NAME
complex - basics of complex mathematics
SYNOPSIS
#include <complex.h>
DESCRIPTION
Complex numbers are numbers of the form z = 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. The pair (a,b) of real numbers may be viewed as a point in the plane, given by X- and Y-
coordinates. This same point may also be described by giving the pair of real numbers (r,phi), where r is the distance to the origin O,
and phi the angle between the X-axis and the line Oz. Now z = r*exp(i*phi) = r*(cos(phi)+i*sin(phi)).
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 supports 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 <stdio.h>
#include <complex.h>
int
main(void)
{
double pi = 4 * atan(1.0);
double complex z = cexp(I * pi);
printf("%f + %f * i
", creal(z), cimag(z));
}
SEE ALSO cabs(3), carg(3), cexp(3), cimag(3), creal(3)COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
2009-07-25 COMPLEX(7)