Ethiopian multiplication: Difference between revisions
add task to zig
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=={{header|zig}}==
<syntaxhighlight lang="zig">
// programme multiplication ethiopienne
// Ethiopian multiplication
const std = @import("std");
const expect = std.testing.expect;
const print = @import("std").debug.print;
pub fn main() !void {
const Res = multiEth(17,34);
print("Resultat= {} \n", .{ Res });
}
test "Ethiopian multiplication" {
try expect(multiEth(20, 10) == 200);
try expect(multiEth(101, 101) == 10201);
try expect(multiEth(20, 0) == 0);
try expect(multiEth(0, 71) == 0);
}
//*****************************
// multiplication
//*****************************
fn multiEth(X: i64, Y: i64) i64 {
var X1=X;
var Y1=Y;
var sum: i64 = 0;
while (X1>=1) {
if ((@mod(X1,2)) == 1)
sum += Y1;
Y1= Y1 * 2;
X1 = @divFloor(X1,2);
}
return sum;
}
</syntaxhighlight>
{{Out}}
<pre>
Resultat= 578
</pre>
=={{header|zkl}}==
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