diff options
| -rw-r--r-- | content/math/legendre.cpp | 2 | ||||
| -rw-r--r-- | content/math/sqrtModCipolla.cpp | 4 |
2 files changed, 3 insertions, 3 deletions
diff --git a/content/math/legendre.cpp b/content/math/legendre.cpp index b85ea2a..80825ea 100644 --- a/content/math/legendre.cpp +++ b/content/math/legendre.cpp @@ -1,4 +1,4 @@ -ll legendre(ll a, ll p) { // p prim >= 2 +ll legendreS(ll a, ll p) { // p prim >= 2 ll s = powMod(a, p / 2, p); return s < 2 ? s : -1ll; } diff --git a/content/math/sqrtModCipolla.cpp b/content/math/sqrtModCipolla.cpp index 1fac0c5..e0037fc 100644 --- a/content/math/sqrtModCipolla.cpp +++ b/content/math/sqrtModCipolla.cpp @@ -1,7 +1,7 @@ -ll sqrtMod(ll a, ll p) {// teste mit legendre ob lösung existiert +ll sqrtMod(ll a, ll p) {// test mit legendreS ob lösung existiert if (a < 2) return a; ll t = 0; - while (legendre((t*t-4*a) % p, p) >= 0) t = rng() % p; + while (legendreS((t*t-4*a) % p, p) >= 0) t = rng() % p; ll b = -t, c = -t, d = 1, m = p; for (m++; m /= 2; b = (a+a-b*b) % p, a = (a*a) % p) { if (m % 2) { |