Commit 9f286f8a authored by Sebastian Stein's avatar Sebastian Stein
Browse files

a lot of new TODOs and a list with some feature requests

svn path=/trunk/kdeextragear-1/kbruch/; revision=176964
parent 611abc77
what is left to do
* use another font size from KGlobalSettings
* find a better way to align task and statistical window
* use function pow() from math.h instead of high()
* remove #define TRUE and use datatype bool
* maybe use int instead of short because source easier to read
* document classes to be able to use KDoc
* maybe use kdDebug() vor debug messages
* split class task in representation, calculate and generation
* integrate KBruch as part into KMath
feature request
- a visual representation of fractions in circles, rectangeles, ... for
- the possibility to practic conversions from fractions to decimal numbers and
vica versa. 1/8 = 0.125
- the calculation with 'mixed numbers' like 2 1/3 + 5 1/7 =
- train actions like 1/3 = 3/9 or 15/45 = 1/3. I don't know the Englisch
words for this actions.
there's also an algorithm to convert decimal numbers of infinite
length, but with a repeating part ( which means the decimal
representations of all rational numbers ) into fractions... I think
the idea was to divide the repeating part by a number which you write
down as x 9's where x is the length of the repeating part ( that's the
best i can explain it in english :). E.g. 0,111... would become 1/9
. 0.1212... would become 12/99 etc. This is the way they explained
it to us in high school, i'm sure there's an easy way to write this
down in code...
With a being your periodical decimal number and n being the length of the
period, you multiply a by 10^n and then subtract a:
a = 0.1111111
10a = 1.1111111
9a = 1
a = 1 / 9
b = 0.213213213213
1000b = 213.213213213213
999b = 213
b = 213 / 999
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