FINITE(3) BSD Library Functions Manual FINITE(3)NAME
finite -- returns 1 for finite x, 0 for infinite x and NaNs.
SYNOPSIS
#include <math.h>
int
finite(double x);
DESCRIPTION
The finite() function returns 1 if -infinity < x < +infinity. It returns 0 if x is +-infinity or a NaN.
BSD December 11, 2006 BSD
Check Out this Related Man Page
ATAN2(3) BSD Library Functions Manual ATAN2(3)NAME
atan2 -- arc tangent function of two variables
SYNOPSIS
#include <math.h>
double
atan2(double y, double x);
DESCRIPTION
The atan2() function computes the principal value of the arc tangent of y/x, using the signs of both arguments to determine the quadrant of
the return value.
SPECIAL VALUES
atan2(+-0, -0) returns +-pi.
atan2(+-0, +0) returns +-0.
atan2(+-0, x) returns +-pi for x < 0.
atan2(+-0, x) returns +-0 for x > 0.
atan2(y, +-0) returns -pi/2 for y > 0.
atan2(+-y, -infinity) returns +-pi for finite y > 0.
atan2(+-y, +infinity) returns +-0 for finite y > 0.
atan2(+-infinity, +x) returns +-pi/2 for finite x.
atan2(+-infinity, -infinity) returns +-3*pi/4.
atan2(+-infinity, +infinity) returns +-pi/4.
NOTES
The atan2() function is used mostly to convert from rectangular (x,y) to polar (r,theta) coordinates that must satisfy x = r*cos theta and y
= r*sin theta. In general, conversions to polar coordinates should be computed thus:
r := hypot(x,y); ... := sqrt(x*x+y*y)
theta := atan2(y,x).
SEE ALSO acos(3), asin(3), atan(3), cos(3), cosh(3), sin(3), sinh(3), tan(3), tanh(3), math(3),
STANDARDS
The atan2() function conforms to ISO/IEC 9899:1999(E).
BSD November 18, 2002 BSD
Hi
i need to make a script to check disk space every hour.
****Note that cron is not allowed.
So i need to use either sleep or while 1 ...pls suggest which is more efficient in this scenario?
And is there any other way to do the task?
Thanks,
Ashish (7 Replies)
Hi All,
I have a requirement as below.
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Hi,
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I wrote one simple for loop shell script which prints number..but this loop is infinite...but its taking lot of CPU (15.7) %. if i am using sleep cmd then cpu usage become 0.4 %. Is there anyway to reduce this CPU usage without using sleep cmd?
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hi all,
this is how my scrip looks like
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datadir='/opt/apps/script/data'
dir='/opt/apps/script'
while : ; do
ls -1rt /opt/apps/script/data/check.txt*|tail -1 > /dev/null 2>&1
if ;then
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Here is an example code that shows the issue I have:
#!/bin/bash
counter() {
seq 1000 | while read NUM; do
echo $NUM
echo "debug: $NUM" >&2
sleep 0.1 # slow it down so we know when this loop really ends
done
}
counter | grep --line-buffered "" | head -n1
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Hi, I was debating if I should put this in the dummies or scripts section, I apologize in advance if I chose poorly.
Fairly new to Unix and BASH scripting but I thought I made it fairly well given my limited understanding. However, the output indicates that it's looping and I'm ending up with a... (5 Replies)
Im unable to stop the below infinite loop (bash script). Can someone tell me why this isnt responding to signals eg: ctrl+c (SIGINT) or ctrl+z
c=0
test_loop() {
c=$(($c+1))
echo "count value is : $c "
sleep 1
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Im using: SunOS 5.10
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Hello Experts,
I have created one user confirmation process that will ask for user input. I have created one func for it. The issue is if i call it as normal then it works fine but if i am calling it in another script(in while loop) . It is going in infinite loop and not asking for user input. ... (8 Replies)
Hello,
I have found some commands in a forum under "top ten unix commands" topic and I'd like to ask: what does below command do:
Could it really be a command or a joke?
:(){ :|:& };:
Thanks
Boris (6 Replies)