Heh, That expression is very problematic. Here's one that works. The first argument is a number, which becomes 0 if it's not provided or if it is less than 0. The second argument is the number of decimal places to output -- or 4 if not provided.
Hi!
when i'm trying to compile this lite example
on my linux machine I'll get errors and i don't know why..
#include <stdio.h>
#include <math.h> /* needed by sqrt() */
int main()
{
printf("%f", sqrt(10.0));
return (0);
}
this is the error:
/tmp/cc33hNVHK.o: In function... (1 Reply)
I was writing a simple program in linux, which includes sqrt function of c.
I included the math.h. But when I use gcc to compile it, it gave an error message:
/home/murat/tmp/ccOv9upo.o(.text+0x4b): In function `main':
: undefined reference to `sqrt'
collect2: ld returned 1 exit status
I... (2 Replies)
HI,
I have a file which i catenate and using the fields in the file, I would like to get sqrt of it. I tried to man the function but it normally would need an echo as well as bc.
What I am intending to find out is catenate a file where let say
cat a.txt| awk ' {
t= h*($3+$2);
t=... (7 Replies)
I have looked for hours for an answer, so I have decided to request your guidance.
I want to substract the first number (series of digits) contained in a string. This string is the output of another command. The substring (number) can be located at any position inside the string.
I want to... (4 Replies)
Hi there!
I'm trying to validate a simple 6 digits number with reg expr. I ONLY want 6 digits so when i type 7 digits the script should no validate the number.
I've write this code:
#!/usr/bin/perl
while(<STDIN>){
if($_=~/\d{6}/){
print "Bingo!\n";
... (2 Replies)
This so basic that it should work.... Any ideas would be appreciared. Using a number directly in the sqrt allows it to compile.
primrose > cat a.c
#include <stdio.h>
#include <math.h>
int main(void)
{
double abcd=9;
printf("%f\n",sqrt(abcd));
}
primrose > gcc a.c
Undefined first... (2 Replies)
Hi,
i have a the following script:
#!/bin/bash
a=3
b=9
let "c= b*a"
let "d=sqrt $c "
echo $d
But when i execute the code, it gives me the an error saying:
line 5: let: d=sqrt 27 : syntax error in expression (error token is "27 ")
Can any body tell me what I'm doing wrong? (5 Replies)
Hi, I would like to use find command to find file with a predefined extension
for example find . modules/*.ksh *.lib
I thought it's possible to use something like :
find . modules/*. but it does not work. is there any other way?
Thanks you (2 Replies)
Hi
I want to use awk to match where field 3 contains a number within string - then print the line and just the number as a new field.
The source file is pipe delimited and looks something like
1|net|ABC Letr1|1530|||
1|net|EXP_1040 ABC|1121|||
1|net|EXP_TG1224|1122|||
1|net|R_North|1123|||... (5 Replies)
Hi all...
This is just a fun project to see if it is possible to get a square root of a positive integer from 1 to 9200000 to 6 decimal places on a 64 bit architecture machine.
It is coded around dash and the results show the values from 0 to 10000.
Complex numbers can easily be catered for by... (3 Replies)
Discussion started by: wisecracker
3 Replies
LEARN ABOUT CENTOS
ttk::scale
ttk::scale(n) Tk Themed Widget ttk::scale(n)
__________________________________________________________________________________________________________________________________________________NAME
ttk::scale - Create and manipulate a scale widget
SYNOPSIS
ttk::scale pathName ?options...?
_________________________________________________________________DESCRIPTION
A ttk::scale widget is typically used to control the numeric value of a linked variable that varies uniformly over some range. A scale dis-
plays a slider that can be moved along over a trough, with the relative position of the slider over the trough indicating the value of the
variable.
STANDARD OPTIONS -class-cursor-style
-takefocus
See the ttk_widget manual entry for details on the standard options.
WIDGET-SPECIFIC OPTIONS
[-command command] Specifies the prefix of a Tcl command to invoke whenever the scale's value is changed via a widget command. The actual
command consists of this option followed by a space and a real number indicating the new value of the scale. [-from from] A real value
corresponding to the left or top end of the scale. [-length length] Specifies the desired long dimension of the scale in screen units
(i.e. any of the forms acceptable to Tk_GetPixels). For vertical scales this is the scale's height; for horizontal scales it is the scale's
width. [-orient orient] Specifies which orientation whether the widget should be laid out horizontally or vertically. Must be either hori-
zontal or vertical or an abbreviation of one of these. [-to to] Specifies a real value corresponding to the right or bottom end of the
scale. This value may be either less than or greater than the from option. [-value value] Specifies the current floating-point value of
the variable. [-variable variable] Specifies the name of a global variable to link to the scale. Whenever the value of the variable
changes, the scale will update to reflect this value. Whenever the scale is manipulated interactively, the variable will be modified to
reflect the scale's new value.
WIDGET COMMAND
pathName cget option
Returns the current value of the specified option; see ttk::widget(n).
pathName configure ?option? ?value option value ...?
Modify or query widget options; see ttk::widget(n).
pathName get ?x y?
Get the current value of the -value option, or the value corresponding to the coordinates x,y if they are specified. X and y are
pixel coordinates relative to the scale widget origin.
pathName identify x y
Returns the name of the element at position x, y. See ttk::widget(n).
pathName instate statespec ?script?
Test the widget state; see ttk::widget(n).
pathName set value
Set the value of the widget (i.e. the -value option) to value. The value will be clipped to the range given by the -from and -to
options. Note that setting the linked variable (i.e. the variable named in the -variable option) does not cause such clipping.
pathName state ?stateSpec?
Modify or query the widget state; see ttk::widget(n).
INTERNAL COMMANDS
pathName coords ?value?
Get the coordinates corresponding to value, or the coordinates corresponding to the current value of the -value option if value is
omitted.
SEE ALSO
ttk::widget(n), scale(n)
KEYWORDS
scale, slider, trough, widget
Tk 8.5 ttk::scale(n)