This page (revision-22) was last changed on 03-Feb-2023 15:21 by Gromit 

This page was created on 14-Mar-2010 18:17 by Carsten Strotmann

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At line 311 added one line
[{Image src='Fig1.png' align='center'}]
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does. This may look very complicated, but it isn't. X&7 computes which bit is to be modified (same as X MOD 8, but much faster). This is used as the index for the ARRAY __m1__. ARRAY __ml__ is declared to contain a set of 8 masks. Each mask represents the bit to be modified for that index. Thus, when m1(X&7) is or'ed into the byte pointed to by __pos__, it
sets only the bit to be plotted without affecting the other bits of that byte.
does. This may look very complicated, but it isn't. X&7 computes which bit is to be modified (same as X MOD 8, but much faster). This is used as the index for the ARRAY __m1__. ARRAY __ml__ is declared to contain a set of 8 masks. Each mask represents the bit to be modified for that index. Thus, when m1(X&7) is or'ed into the byte pointed to by __pos__, it sets only the bit to be plotted without affecting the other bits of that byte.
This page (revision-22) was last changed on 03-Feb-2023 15:21 by Gromit  Top