improved math

2 files changed, 1 insertions, 9 deletions

diff --git a/math/transforms/fft.cpp b/math/transforms/fft.cpp
index 4540ed8..6c5f5a8 100644
--- a/math/transforms/fft.cpp
+++ b/math/transforms/fft.cpp
@@ -1,4 +1,4 @@
-using cplx = complex<double>; // Eigene Implementierung ist schneller.
+using cplx = complex<double>;
 
 void fft(vector<cplx>& a, bool inverse = 0) {
 	int n = sz(a);
diff --git a/math/transforms/fftPerm.cpp b/math/transforms/fftPerm.cpp
deleted file mode 100644
index 2b6fb10..0000000
--- a/math/transforms/fftPerm.cpp
+++ /dev/null
@@ -1,8 +0,0 @@
-int perm[MAXN]; //perm[i] = j in Zeile 10
-void genPerm(int n){
-	ull mask = ~0ull << (__lg(n) - 1);
-	for (int i = 0, j = 0; i < n; i++) {
-		perm[i] = j; //if (i < j) swap(a[i], a[j]);
-		ull y = mask >> __builtin_ctz(~i);
-		j ^= y & (n - 1);
-}}