Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Rounding off decimals to the nearest number in PERL
Top Forums Shell Programming and Scripting Rounding off decimals to the nearest number in PERL Post 302302020 by rdlover on Sunday 29th of March 2009 08:07:24 PM
Old 03-29-2009
Below is the snippet of the code that i have written. The damn sprintf is not working. No matter what number i enter, it is entering ceil and not floor.Any reasons why ?



Code:
#!/usr/bin/perl

# SOME VARIABLE

use POSIX;

print "Enter a number = ";

$nSlices1 = <STDIN>;

($bdec, $adec ) = split( /\./, $nSlices1 ); # Split the variable at the decimal point and put it into 2 temporary variables


print " The value of numbers before decimal point is $bdec \n";

sprintf("%.3f", $adec) ;

print " The value of numbers after  decimal point is $adec \n";


if ($adec >= 50)

{
     $ceil = ceil($nSlices1); 
     print "The value of $nSlices1 has been rounded off to $ceil \n";
    } 

else 

{
      $floor = floor($nSlices1);
        
       print "The value of input has been rounded off to $floor  \n";
        
}

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Rounding off to the next whole number

Hello, I searched a lot on this Forum. Please help me with the below problem. I want to divide two numbers and the result should be the next nearest whole number. E.G. Dividing 10.8/5 ideally gives 2.16. But the result should be 3 i.e. rounded off to the next whole number. Any help will... (2 Replies)
Discussion started by: damansingh
2 Replies

2. Shell Programming and Scripting

removing and rounding up decimals

Hi Experts, I have a command that gives me the output as below root@ckpgpay11core> cat sara | awk '{ sum += $1} ; END { print sum }' | awk {'print $1/90'} 8.88889 how do i remove the decimal spaces so that the figure will round itself to 9? Thanks. (3 Replies)
Discussion started by: aismann
3 Replies

3. Shell Programming and Scripting

convert Regular decimals to Packed decimals

Hi, I am trying to find if there is a way to convert regular decimal values to Paced decimal values. I tried to find a c program but I could get a Packed converted to regular decimal not the other way round. If not unix please let me know if any other progrimming language I can use to do... (2 Replies)
Discussion started by: mgirinath
2 Replies

4. Shell Programming and Scripting

rounding time in perl

Is there a way I can round time in perl to the nearest five minutes? For example if I have log giving the following time stamps 23,52,30 it would rounded up to 23,55,00 and 23,50,01 would be rounded to 23,50,00 (3 Replies)
Discussion started by: borderblaster
3 Replies

5. Shell Programming and Scripting

PERL - rounding fractional number

It seems that perl sprintf uses the round-to-even method: foreach my $i ( 0.5, 1.5, 2.5, 3.5 ) { printf "$i -> %.0f\n", $i; } __END__ 0.5 -> 0 1.5 -> 2 2.5 -> 2 3.5 -> 4 4.5 -> 4 Where we probably wants to use round-half-up, i.e. output should be as below: 0.5 -> 1 1.5 -> 2... (8 Replies)
Discussion started by: ganapati
8 Replies

6. Shell Programming and Scripting

AWK Match to nearest number

Hello Guys, I'm very new on here and require some help matching up and printing some columns using awk. I have two text files. The first file has Longitude data in column 1 (lon.txt) and the second one (node.txt) has again another Longitude data in column 1 (not exact as the first one) + in... (7 Replies)
Discussion started by: ian_gooch
7 Replies

7. Shell Programming and Scripting

Rounding number, but....

Dear Experts, I'm trying to find a way to round a number but in this way: 14367.577 ---> 14000 I used the following to round the number to the closer integer: echo $var|awk '{print int($1+0.5)}' and also: xargs printf "%1.0f" However, they don't work for my above... (9 Replies)
Discussion started by: Gery
9 Replies

8. UNIX for Dummies Questions & Answers

Rounding up to nearest whole number

Hi all of you, Would be great if you help me with how to round up to whole number from my input values like 2.99996,2.17890,3.00002,-2.3456,-2.7890 o/p should be like 3,2,3,-2,-3 thnks in adv!!!! regards (3 Replies)
Discussion started by: Indra2011
3 Replies

9. Shell Programming and Scripting

Rounding off to the nearest floating number

I have a number, which I want to convert into the nearest floating number upto two places after the decimal point. E.g. 1.2346 will become 1.23 but 1.2356 will become 1.24 . Similarly 0.009 will be 0.01 and 0.001 will be 0.00 or 0.0 (not 0, wnat to keep the decimal... (1 Reply)
Discussion started by: hbar
1 Replies

10. Shell Programming and Scripting

[awk] rounding a float number?

Heyas Trying to calculate the total size of a file by reading its bitrate. Code snippet: fs_expected() { # # Returns the expected filesize in bytes # pr_str() { ff=$(cat $TMP.info) d="${ff#*bitrate: }" echo "${d%%,*}" | $AWK '{print $1}' | head -n 1 } t_BYTERATE=$((... (9 Replies)
Discussion started by: sea
9 Replies

LEARN ABOUT CENTOS

qdoublevalidator

QDoubleValidator(3qt)													     QDoubleValidator(3qt)

NAME

       QDoubleValidator - Range checking of floating-point numbers

SYNOPSIS

       #include <qvalidator.h>

       Inherits QValidator.

   Public Members
       QDoubleValidator ( QObject * parent, const char * name = 0 )
       QDoubleValidator ( double bottom, double top, int decimals, QObject * parent, const char * name = 0 )
       ~QDoubleValidator ()
       virtual QValidator::State validate ( QString & input, int & ) const
       virtual void setRange ( double minimum, double maximum, int decimals = 0 )
       void setBottom ( double )
       void setTop ( double )
       void setDecimals ( int )
       double bottom () const
       double top () const
       int decimals () const

   Properties
       double bottom - the validator's minimum acceptable value
       int decimals - the validator's maximum number of digits after the decimal point
       double top - the validator's maximum acceptable value

DESCRIPTION

       The QDoubleValidator class provides range checking of floating-point numbers.

       QDoubleValidator provides an upper bound, a lower bound and a limit on the number of digits after the decimal point. It does not provide a
       fixup() function.

       You can set the acceptable range in one call with setRange(), or with setBottom() and setTop(). Set the number of decimal places with
       setDecimals(). The validate() function returns the validation state.

       See also QIntValidator, QRegExpValidator, and Miscellaneous Classes.

MEMBER FUNCTION DOCUMENTATION

QDoubleValidator::QDoubleValidator ( QObject * parent, const char * name = 0 )
       Constructs a validator object with parent parent, called name, which accepts any double.

QDoubleValidator::QDoubleValidator ( double bottom, double top, int decimals, QObject * parent, const char * name = 0 )
       Constructs a validator object with parent parent, called name. This validator will accept doubles from bottom to top inclusive, with up to
       decimals digits after the decimal point.

QDoubleValidator::~QDoubleValidator ()
       Destroys the validator, freeing any resources used.

double QDoubleValidator::bottom () const
       Returns the validator's minimum acceptable value. See the "bottom" property for details.

int QDoubleValidator::decimals () const
       Returns the validator's maximum number of digits after the decimal point. See the "decimals" property for details.

void QDoubleValidator::setBottom ( double )
       Sets the validator's minimum acceptable value. See the "bottom" property for details.

void QDoubleValidator::setDecimals ( int )
       Sets the validator's maximum number of digits after the decimal point. See the "decimals" property for details.

void QDoubleValidator::setRange ( double minimum, double maximum, int decimals = 0 ) [virtual]
       Sets the validator to accept doubles from minimum to maximum inclusive, with at most decimals digits after the decimal point.

void QDoubleValidator::setTop ( double )
       Sets the validator's maximum acceptable value. See the "top" property for details.

double QDoubleValidator::top () const
       Returns the validator's maximum acceptable value. See the "top" property for details.

QValidator::State QDoubleValidator::validate ( QString & input, int & ) const [virtual]
       Returns Acceptable if the string input contains a double that is within the valid range and is in the correct format.

       Returns Intermediate if input contains a double that is outside the range or is in the wrong format, e.g. with too many digits after the
       decimal point or is empty.

       Returns Invalid if the input is not a double.

       Note: If the valid range consists of just positive doubles (e.g. 0.0 - 100.0) and input is a negative double then Invalid is returned.

       Reimplemented from QValidator.

   Property Documentation
double bottom
       This property holds the validator's minimum acceptable value.

       Set this property's value with setBottom() and get this property's value with bottom().

       See also setRange().

int decimals
       This property holds the validator's maximum number of digits after the decimal point.

       Set this property's value with setDecimals() and get this property's value with decimals().

       See also setRange().

double top
       This property holds the validator's maximum acceptable value.

       Set this property's value with setTop() and get this property's value with top().

       See also setRange().

SEE ALSO

       http://doc.trolltech.com/qdoublevalidator.html http://www.trolltech.com/faq/tech.html

COPYRIGHT

       Copyright 1992-2007 Trolltech ASA, http://www.trolltech.com.  See the license file included in the distribution for a complete license
       statement.

AUTHOR

       Generated automatically from the source code.

BUGS

       If you find a bug in Qt, please report it as described in http://doc.trolltech.com/bughowto.html.  Good bug reports help us to help you.
       Thank you.

       The definitive Qt documentation is provided in HTML format; it is located at $QTDIR/doc/html and can be read using Qt Assistant or with a
       web browser. This man page is provided as a convenience for those users who prefer man pages, although this format is not officially
       supported by Trolltech.

       If you find errors in this manual page, please report them to qt-bugs@trolltech.com.  Please include the name of the manual page
       (qdoublevalidator.3qt) and the Qt version (3.3.8).

Trolltech AS							  2 February 2007					     QDoubleValidator(3qt)
All times are GMT -4. The time now is 04:41 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy