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more info about GetRandom vs. rand

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git-svn-id: svn://svn.cc65.org/cc65/trunk@1500 b7a2c559-68d2-44c3-8de9-860c34a00d81
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izydorst
2002-11-10 15:52:26 +00:00
parent c8597283ef
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7
doc/geos.sgml
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@@ -1245,7 +1245,12 @@ This function returns a random number. It can be also read from <tt/random/ e.g.
a=random; a=random;
</verb></tscreen> </verb></tscreen>
but by calling this function you are sure that the results will be always different. but by calling this function you are sure that the results will be always different.
<tt/random/ is updated once a frame (50Hz PAL) and on every call to <tt/GetRandom/ <tt/random/ is updated once a frame (50Hz PAL) and on every call to <tt/GetRandom/.
<p>
Note that it is not the same as <tt/rand/ function from the standard library. <tt/GetRandom/
will give you unpredictable results (if IRQs will occur between calls to it) while
<tt/rand/ conforms to the standard and for given seed (<tt/srand/) it always returns with the
same sequence of values.
<sect2>SetDevice <sect2>SetDevice
<p> <p>