GSP
Quick Navigator

Search Site

Unix VPS
A - Starter
B - Basic
C - Preferred
D - Commercial
MPS - Dedicated
Previous VPSs
* Sign Up! *

Support
Contact Us
Online Help
Handbooks
Domain Status
Man Pages

FAQ
Virtual Servers
Pricing
Billing
Technical

Network
Facilities
Connectivity
Topology Map

Miscellaneous
Server Agreement
Year 2038
Credits
 

USA Flag

 

 

Man Pages
Math::Cephes::Fraction(3) User Contributed Perl Documentation Math::Cephes::Fraction(3)
 

  Math::Cephes::Fraction - Perl interface to the cephes math fraction routines

  use Math::Cephes::Fraction qw(fract);
  my $f1 = fract(2,3);          # $f1 = 2/3
  my $f2 = fract(3,4);          # $f2 = 3/4
  my $f3 = $f1->radd($f2);      # $f3 = $f1 + $f2

This module is a layer on top of the basic routines in the cephes math library to handle fractions. A fraction object is created via any of the following syntaxes:
  my $f = Math::Cephes::Fraction->new(3, 2);  # $f = 3/2
  my $g = new Math::Cephes::Fraction(5, 3);   # $g = 5/3
  my $h = fract(7, 5);                        # $h = 7/5
the last one being available by importing :fract. If no arguments are specified, as in
  my $h = fract();
then the defaults $z = 0/1 are assumed. The numerator and denominator of a fraction are represented respectively by
   $f->{n}; $f->{d}
or, as methods,
  $f->n;  $f->d;
and can be set according to
  $f->{n} = 4; $f->{d} = 9;
or, again, as methods,
 $f->n(4)  ; $f->(d) = 9;
The fraction can be printed out as
  print $f->as_string;
or as a mixed fraction as
  print $f->as_mixed_string;
These routines reduce the fraction to its basic form before printing. This uses the euclid routine which finds the greatest common divisor of two numbers, as follows:
 ($gcd, $m_reduced, $n_reduced) = euclid($m, $n);
which returns the greatest common divisor of $m and $n, as well as the result of reducing $m and $n by $gcd
A summary of the basic routines is as follows.
 $x = fract(3, 4);       #  x = 3 / 4
 $y = fract(2, 3);       #  y = 2 / 3
 $z = $x->radd( $y );    #  z = x + y
 $z = $x->rsub( $y );    #  z = x - y
 $z = $x->rmul( $y );    #  z = x * y
 $z = $x->rdiv( $y );    #  z = x / y
 print $z->{n}, ' ', $z->{d};  # prints numerator and denominator of $z
 print $z->as_string;         # prints the fraction $z
 print $z->as_mixed_string;   # converts $z to a mixed fraction, then prints it
 $m = 60;
 $n = 144;
 ($gcd, $m_reduced, $n_reduced) = euclid($m, $n);

Please report any to Randy Kobes <randy@theoryx5.uwinnipeg.ca>

For the basic interface to the cephes fraction routines, see Math::Cephes. See also Math::Fraction for a more extensive interface to fraction routines.

The C code for the Cephes Math Library is Copyright 1984, 1987, 1989, 2002 by Stephen L. Moshier, and is available at http://www.netlib.org/cephes/. Direct inquiries to 30 Frost Street, Cambridge, MA 02140.
The perl interface is copyright 2000, 2002 by Randy Kobes. This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
2016-05-06 perl v5.28.1

Search for    or go to Top of page |  Section 3 |  Main Index

Powered by GSP Visit the GSP FreeBSD Man Page Interface.
Output converted with ManDoc.