Hi,
I have written a c program to find cos() of a value , its not working, I am getting value of "val " as 0000.
#include<stdio.h>
#include<math.h>
main()
{
float val;
val = cosf( 1.570796);
printf("\nval = %f",val);
} (9 Replies)
Hi all,
Trying to write a script that reads a file and prints everything after a certain string is found to the end of the file. Awk is giving me an error and not sure why it doesn't work:
# cat test_file
Mon Nov 16 2009 16:11:08
abc
def
Tue Nov 17 2009 16:08:06
ghi
jkl
Wed Nov 18... (8 Replies)
Hi,
My code uses try_eval block to do some code execution. This piece of code does not work on RHEL 5.4. The program just hangs at the try_eval block and does not throw any errors either. The same program however works in other Linux boxes that we have.
I have written a simple program that... (0 Replies)
Hi
I tried running the code
scrname=`whence $0 | sed -e 's/\.\///g'`
where $0 is substituted by cm_dsjobrun.sh
in unix env then the value it returns me is
SCRNAME=/data/ds/dpr_ebicm_uat/etl/cm3_0/scripts/shell/cm_dsjobrun.sh
whereas i ran the same code on linux env
The value... (9 Replies)
dear All,
my awk system command isn't working or rather I'm missing something in my command. Appreciated , if anyone can assist me what exactly I'm missing ??
awk ' /^/ {
> c=split($3,a,"/") ;for(n=1; n<=c; ++n)
> {
> if (system("test -d" /home/cubedata/20120104/"$1"/"a")) {
> print... (5 Replies)
I am using Linux RHEL5 64 bit and installed oracle 11g.
I want to check ODBC connection , i had modified odbc.ini file
when i use this command -isql
I am getting following error .
bash: isql: command not found
Kindly help (5 Replies)
Hi
I am working on linux machine and swap command is not working Linux Machine
On Solaris machine it is working fine:
uname -a
SunOS rgsm01 5.9 Generic_118558-03 sun4u sparc SUNW,Sun-Fire-V440
swap -s
total: 6596320k bytes allocated + 1035968k reserved = 7632288k used, 38893408k available
... (5 Replies)
Hi,
I have around 10 files in a folder in which I want to change the file format from tab(\t) to pipe(|) with some changes in the fields as well. Below is the code, while tmp file is getting generated but move command is not working, please help
Following is the code
awk -F"\t" '{print... (2 Replies)
I have a script .sh with a curl command in it:
curl --digest "http://xxxxxxx.xxx/mail.php?email=xxxx@xxx.xx";
from terminal this works good :
./script.sh //(mail arrives in my box)
from php this works good:
shell_exec('./phpsc.sh'); // (mail arrives in my box)
from terminal this... (13 Replies)
Hello,
I am on a Mac and trying to clean up some monthly files with a very simple SED:
sed '3,10d;/<ACROSS>/,$d' input.txt > output.txt
(from the input, delete lines 3 - 10; then delete from the line containing <ACROSS> to the end of the file)
then output to output.txt
Even when I try... (2 Replies)
Discussion started by: verbatim
2 Replies
LEARN ABOUT DEBIAN
devel::refcount
Devel::Refcount(3pm) User Contributed Perl Documentation Devel::Refcount(3pm)NAME
"Devel::Refcount" - obtain the REFCNT value of a referent
SYNOPSIS
use Devel::Refcount qw( refcount );
my $anon = [];
print "Anon ARRAY $anon has " . refcount($anon) . " reference
";
my $otherref = $anon;
print "Anon ARRAY $anon now has " . refcount($anon) . " references
";
DESCRIPTION
This module provides a single function which obtains the reference count of the object being pointed to by the passed reference value.
FUNCTIONS
$count = refcount($ref)
Returns the reference count of the object being pointed to by $ref.
COMPARISON WITH SvREFCNT
This function differs from "Devel::Peek::SvREFCNT" in that SvREFCNT() gives the reference count of the SV object itself that it is passed,
whereas refcount() gives the count of the object being pointed to. This allows it to give the count of any referent (i.e. ARRAY, HASH,
CODE, GLOB and Regexp types) as well.
Consider the following example program:
use Devel::Peek qw( SvREFCNT );
use Devel::Refcount qw( refcount );
sub printcount
{
my $name = shift;
printf "%30s has SvREFCNT=%d, refcount=%d
",
$name, SvREFCNT($_[0]), refcount($_[0]);
}
my $var = [];
printcount 'Initially, $var', $var;
my $othervar = $var;
printcount 'Before CODE ref, $var', $var;
printcount '$othervar', $othervar;
my $code = sub { undef $var };
printcount 'After CODE ref, $var', $var;
printcount '$othervar', $othervar;
This produces the output
Initially, $var has SvREFCNT=1, refcount=1
Before CODE ref, $var has SvREFCNT=1, refcount=2
$othervar has SvREFCNT=1, refcount=2
After CODE ref, $var has SvREFCNT=2, refcount=2
$othervar has SvREFCNT=1, refcount=2
Here, we see that SvREFCNT() counts the number of references to the SV object passed in as the scalar value - the $var or $othervar
respectively, whereas refcount() counts the number of reference values that point to the referent object - the anonymous ARRAY in this
case.
Before the CODE reference is constructed, both $var and $othervar have SvREFCNT() of 1, as they exist only in the current lexical pad. The
anonymous ARRAY has a refcount() of 2, because both $var and $othervar store a reference to it.
After the CODE reference is constructed, the $var variable now has an SvREFCNT() of 2, because it also appears in the lexical pad for the
new anonymous CODE block.
PURE-PERL FALLBACK
An XS implementation of this function is provided, and is used by default. If the XS library cannot be loaded, a fallback implementation in
pure perl using the "B" module is used instead. This will behave identically, but is much slower.
Rate pp xs
pp 225985/s -- -66%
xs 669570/s 196% --
SEE ALSO
o Test::Refcount - assert reference counts on objects
AUTHOR
Paul Evans <leonerd@leonerd.org.uk>
perl v5.14.2 2011-11-15 Devel::Refcount(3pm)