small inaccuracies


Posted on 16th Feb 2014 01:33 pm by admin

I have this code to convert fractional base 10 into base 2:

while($num > 0)
{
echo "<tr><td>". $num." * 2 = </td><td>". $num*2 ."</td></tr>";
$num= $num*2;
if($num>= 1)
{ $num-= 1; $bin .= "1"; }
else
{ $bin .= "0"; }
}

anyway, stuff gets off, example:

Quote0.7 * 2 = 1.4
0.4 * 2 = 0.8
0.8 * 2 = 1.6
0.6 * 2 = 1.2
0.2 * 2 = 0.4
0.4 * 2 = 0.8
0.8 * 2 = 1.6
0.6 * 2 = 1.2
0.2 * 2 = 0.4
0.4 * 2 = 0.8
0.8 * 2 = 1.6
0.6 * 2 = 1.2
0.2 * 2 = 0.4
0.4 * 2 = 0.799999999999
0.799999999999 * 2 = 1.6
0.599999999999 * 2 = 1.2
0.199999999997 * 2 = 0.399999999994
0.399999999994 * 2 = 0.799999999988
0.799999999988 * 2 = 1.59999999998
0.599999999977 * 2 = 1.19999999995
0.199999999953 * 2 = 0.399999999907
0.399999999907 * 2 = 0.799999999814
0.799999999814 * 2 = 1.59999999963
0.599999999627 * 2 = 1.19999999925
0.199999999255 * 2 = 0.39999999851
0.39999999851 * 2 = 0.79999999702
0.79999999702 * 2 = 1.59999999404
0.59999999404 * 2 = 1.19999998808
0.199999988079 * 2 = 0.399999976158
0.399999976158 * 2 = 0.799999952316
0.799999952316 * 2 = 1.59999990463
0.599999904633 * 2 = 1.19999980927
0.199999809265 * 2 = 0.39999961853
0.39999961853 * 2 = 0.799999237061
0.799999237061 * 2 = 1.59999847412
0.599998474121 * 2 = 1.19999694824
0.199996948242 * 2 = 0.399993896484
0.399993896484 * 2 = 0.799987792969
0.799987792969 * 2 = 1.59997558594
0.599975585938 * 2 = 1.19995117188
0.199951171875 * 2 = 0.39990234375
0.39990234375 * 2 = 0.7998046875
0.7998046875 * 2 = 1.599609375
0.599609375 * 2 = 1.19921875
0.19921875 * 2 = 0.3984375
0.3984375 * 2 = 0.796875
0.796875 * 2 = 1.59375
0.59375 * 2 = 1.1875
0.1875 * 2 = 0.375
0.375 * 2 = 0.75
0.75 * 2 = 1.5
0.5 * 2 = 1
obviously, 0.4 * 2 does not equal 0.799999999999

how can i fix these inaccuracies?

No comments posted yet

Your Answer:

Login to answer
335 Like 33 Dislike
Previous forums Next forums
Other forums

Simpler method of getting variables from mysql
Hi Guys,

I'm trying to streamline my CMS's code and as I was writing a new page it occured to

Blanco Herve Leger Vestido Nikayla festoneado- Edge [herve leger66] - €171.90 : hervelegercheap, wityou.net
[b][url=http://www.wityou.net/es/]vestidos de Herve Leger baratos[/url][/b] [b][url=http://www.wityo

Replica Chopard watches
[b]swiss replica watches aaa+[/b] [b]swiss replica watches[/b] high quality swiss replica watches

Checking BOM Authorization Group
Hai Friends,

I have developed a mulitilevel BOM display report. End users have been assig

Breguet horloges
[b]Audemars Piguet luxe horloges[/b] [b][url=http://www.buyreplicawatch.top/nl/audemars-piguet-c-92.

Sign up to write
Sign up now if you have flare of writing..
Login   |   Register
Follow Us
Indyaspeak @ Facebook Indyaspeak @ Twitter Indyaspeak @ Google+ Indyaspeak @ Pinterest RSS