how can i show the value when i divide a number where the dividend is greater then the divisor. for example...
3 divided by 15 ---> let x=3/15
when i do this in the shell environment it gives me an output of 0.
please help me.
thanks. (3 Replies)
I have a doubt with an error message, and i want to be sure if this is a normal situation or not.
Situation: I was formating and installing a SCSI 36Gb HD with UNIX SCO 5.05, the problem happens when is making the division and filesystem on disk 1, and the message error is "Exit value 139... (1 Reply)
hi
I am having two variables namely a=7 & b=8. I have to subtract these two variables. I am using the command
c=`expr $a / $b`
When I check the value of c, it comes out to be zero.
Please help.
Regards
Rochit (9 Replies)
Hi,
I am writing a script that among other things will be checking for various files on mount points. One of the conditions is that unless the server has failed over the df command will show root ( / ). If when checking the files the script comes across /, I want it to skip it, otherwise to... (2 Replies)
i have a script that is doing the following:
awk 'BEGIN {FS=","} ; {printf("%.10f",($5 - $2)/(3 * $3))}' data > test
now some records in $3 contain zeroes. i don't want to remove those records. is it possible to check for division by zero and then write a "N/A" for that record in the o/p... (2 Replies)
I received error "awk: division by zero" while executing the following statement.
SunOS 5.10 Generic_142900-15 sun4us sparc FJSV,GPUZC-M
echo 8 | awk 'END {printf ("%d\n",NR/$1 + 0.5);}' file1.lst
awk: division by zero
Can someone provide solution?
Thanks
Please use code... (11 Replies)
hi,
The below commands result only the whole number(not giving the decimal values).
pandeeswaran@ubuntu:~$ echo 1,2,3,4|sed 's/,/\//g'|bc
0
pandeeswaran@ubuntu:~$ echo 1000,2,3|sed 's/,/\//g'|bc
166
How to make it to return the decimal values?
Thanks (5 Replies)
I have a function that outputs 3 lines for each result and I want to know how many results there are.
so for example
function | wc -l
24
but I want to see the result 8.
so is there a easy way to divide the result? (5 Replies)
I have two text files T1 and T2
T1 looks as follows
Name All Maths Science English Social
Anie 48/18 = 2.7 44/17 = 2.6 20/6 = 3.3 24/11 = 2.2 NA
Edwin ... (4 Replies)
Discussion started by: andrewps
4 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)