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fix/factor ~ fix fault when factoring number composed of a squared factor

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This commit is contained in:
Roy Ivy III
2020-10-26 15:06:28 -05:00
parent 8593b4c46c
commit 368f47381b
1 changed files with 9 additions and 3 deletions
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src/uu/factor/src/factor.rs
+9 -3
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@@ -169,10 +169,16 @@ pub fn factor(num: u64) -> Factors {
if let Some(divisor) = find_factor(factor) {
let mut gcd_queue = Decomposition::one();
gcd_queue.add(divisor, exp);
gcd_queue.add(factor / divisor, exp);
let mut non_trivial_gcd = true;
let quotient = factor / divisor;
if quotient == divisor {
gcd_queue.add(divisor, exp + 1);
} else {
gcd_queue.add(divisor, exp);
gcd_queue.add(quotient, exp);
}
let mut non_trivial_gcd = quotient != divisor;
while non_trivial_gcd {
debug_assert_eq!(factor, gcd_queue.product());