Math
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<?
function decimal_to_fraction ($number)
{
list ($whole, $numerator) = explode ('.', $number);
$denominator = 1 . str_repeat (0, strlen ($numerator));
$GCD = GCD ($numerator, $denominator);
$numerator /= $GCD;
$denominator /= $GCD;
return sprintf ('%d <sup>%d</sup>/<sub>%d</sub>',
$whole, $numerator, $denominator);
}
function GCD ($a, $b)
{
while ( $b != 0)
{
$remainder = $a % $b;
$a = $b;
$b = $remainder;
}
return abs ($a);
}
/*
DESCRIPTION
============================================================
Decimal_to_Fraction:
A simple function that converts numbers with decimal
remainders to numbers with fractional remainders.
Includes a function to find the greatest common denominator.
============================================================
CREDITS
============================================================
Author: J. A. Greant ( zak@nucleus.com )
Version 1: June 9, 2000
============================================================
NOTICES
============================================================
If you:
Modify this code and want to share your changes :)
Find a bug
Have other questions or comments
Please write:
Zak Greant (zak@nucleus.com)
============================================================
USAGE EXAMPLES
============================================================
print Decimal_to_Fraction (1.2); // Should output 1 1/5
============================================================
COPYRIGHT
============================================================
Copyright (c) 2000 J. A. Greant ( zak@nucleus.com )
All rights reserved.
This function is free software; you can redistribute it
and/or modify it under the terms of the GNU Lesser General
Public License as published by the Free Software Foundation;
either version 2.1 of the License, or (at your option) any
later version.
This function is distributed in the hope that it will be
useful,but WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the GNU Lesser General Public License for more
details.
You should have received a copy of the GNU Lesser General
Public License along with this function; if not, write to
the:
Free Software Foundation, Inc.
59 Temple Place, Suite 330
Boston, MA
02111-1307 USA
http://www.gnu.org/
============================================================
*/
?>
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