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Ethiopian multiplication: Difference between revisions
→{{header|PL/I}}
(→{{header|PureBasic}}: changed isOdd() to isEven()) |
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=={{header|PL/I}}==
<lang PL/I>
declare (L(30), R(30)) fixed binary;
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L, R = 0;
put skip list
('
get list (L(1), R(1));
put edit ('The product of ', trim(L(1)), ' and ', trim(R(1)), ' is ') (a);
do i = 1 by 1 while (L(i) ^= 0);
L(i+1) = halve(L(i)
R(i+1) = double(R(i)
end;
s = 0;
do i = 1 by 1 while (L(i) > 0);
if
end;
put edit (trim(s)) (a);
halve: procedure (k) returns (fixed binary);
declare k fixed binary;
return (k/2);
end halve;
double: procedure (k) returns (fixed binary);
declare k fixed binary;
return (2*k);
end;
odd: procedure (k) returns (bit (1));
return (iand(k, 1) ^= 0);
end odd;
</lang>
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