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modred fix failures

This commit is contained in:
Christoph J. Scherr 2023-05-16 14:23:05 +02:00
parent 853c28a4d5
commit 08fcef7079
Signed by: PlexSheep
GPG Key ID: 25B4ACF7D88186CC
1 changed files with 8 additions and 10 deletions
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18
src/math/modred.rs
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@ -26,21 +26,19 @@ pub fn modred(mut poly: u64, relation: u64, verbose: bool) -> Result<u64, String
println!("polynomial:\t0x{:x}\t", poly); println!("polynomial:\t0x{:x}\t", poly);
println!("======================================================================="); println!("=======================================================================");
} }
while relation.leading_zeros() - poly.leading_zeros() != 0 { if relation > poly {
if verbose {
println!("relation is longer than polynom, nothing to do.");
}
return Ok(poly);
}
while poly > relation {
diffrence = relation.leading_zeros() - poly.leading_zeros(); diffrence = relation.leading_zeros() - poly.leading_zeros();
poly = poly ^ (relation << diffrence); poly = poly ^ (relation << diffrence);
if verbose { if verbose {
println!("{index}:\tpoly: 0x{:x}\t", poly); println!("{index}:\tpoly: 0x{:x}\t 0b{:b}", poly, poly);
//println!("{index}:\tpoly: 0b{:b}\t", poly);
} }
index += 1; index += 1;
} }
// one more time!
diffrence = relation.leading_zeros() - poly.leading_zeros();
poly = poly ^ (relation << diffrence);
if verbose {
println!("{index}:\tpoly: 0x{:x}\t", poly);
//println!("{index}:\tpoly: 0b{:b}\t", poly);
}
return Ok(poly); return Ok(poly);
} }