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| author | Gloria Mundi <gloria@gloria-mundi.eu> | 2024-11-16 01:24:14 +0100 |
|---|---|---|
| committer | Gloria Mundi <gloria@gloria-mundi.eu> | 2024-11-16 01:24:14 +0100 |
| commit | 98567ec798aa8ca2cfbcb85c774dd470f30e30d4 (patch) | |
| tree | 5113d5cc24d1ad5f93810b6442ce584a36950dc8 /math/transforms/multiplyFFT.cpp | |
| parent | ad3856a6b766087df0036de0b556f4700a6498c9 (diff) | |
| parent | 8d11c6c8213f46f0fa19826917c255edd5d43cb1 (diff) | |
mzuenni tests
Diffstat (limited to 'math/transforms/multiplyFFT.cpp')
| -rw-r--r-- | math/transforms/multiplyFFT.cpp | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/math/transforms/multiplyFFT.cpp b/math/transforms/multiplyFFT.cpp deleted file mode 100644 index 0022d1f..0000000 --- a/math/transforms/multiplyFFT.cpp +++ /dev/null @@ -1,12 +0,0 @@ -vector<ll> mul(vector<ll>& a, vector<ll>& b) { - int n = 1 << (__lg(sz(a) + sz(b) - 1) + 1); - vector<cplx> a2(all(a)), b2(all(b)); - a2.resize(n), b2.resize(n); - fft(a2), fft(b2); - for (int i=0; i<n; i++) a2[i] *= b2[i]; - fft(a2, true); - - vector<ll> ans(n); - for (int i=0; i<n; i++) ans[i] = llround(a2[i].real()); - return ans; -} |