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component logic "LinuxCNC HAL component providing configurable logic functions";
pin in bit in-##[16 : personality & 0xff];
pin out bit and if personality & 0x100;
pin out bit or if personality & 0x200;
pin out bit xor if personality & 0x400;
function _ nofp;
description """
General `logic function' component. Can perform `and', `or'
and `xor' of up to 16 inputs.
.LP
Determine the proper value for `personality'
by adding the inputs and outputs then convert to hex:
.IP \\(bu 4
The number of input pins, usually from 2 to 16
.IP \\(bu
256 (0x100) if the `and' output is desired
.IP \\(bu
512 (0x200) if the `or' output is desired
.IP \\(bu
1024 (0x400) if the `xor' (exclusive or) output is desired
.LP
Outputs can be combined, for example 2 + 256 + 1024 = 1282 converted to hex
would be 0x502 and would have two inputs and have both `xor' and `and' outputs.
""";
license "GPL";
;;
FUNCTION(_) {
int i, a=1, o=0, x=0;
for(i=0; i < (personality & 0xff); i++) {
if(in(i)) { o = 1; x = !x; }
else { a = 0; }
}
if(personality & 0x100) and = a;
if(personality & 0x200) or = o;
if(personality & 0x400) xor = x;
}
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