GCC Code Coverage Report


Directory: ./
Coverage: low: ≥ 0% medium: ≥ 75.0% high: ≥ 90.0%
Coverage Exec / Excl / Total
Lines: 100.0% 69 / 0 / 69
Functions: 100.0% 3 / 0 / 3
Branches: 86.4% 57 / 0 / 66

src/fps/powem/lib.hpp
Line Branch Exec Source
1 #pragma once
2
3 #include "../inv/lib.hpp"
4
5 namespace tifa_libs {
6
7 template <poly_c poly_t>
8 153 CEXP auto powem_fps(poly_t CR f, poly_t g = {1}, u32 m = 0) NE {
9 153 u32 n = (u32)f.size() - 1, k = 1, h = std::bit_ceil(n + 1);
10 153 TPN poly_t::ccore_t core2, core4;
11 153 core2.bzr(k * h * 2), core4.bzr(k * h * 4), g.resize(n + 1);
12
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auto tifa_libs::powem_fps<tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_bs_tag<998244353ul> > > > >(tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_bs_tag<998244353ul> > > > const&, tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_bs_tag<998244353ul> > > >, unsigned int):
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auto tifa_libs::powem_fps<tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms64_tag<998244353ul> > > > >(tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms64_tag<998244353ul> > > > const&, tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms64_tag<998244353ul> > > >, unsigned int):
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auto tifa_libs::powem_fps<tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms_tag<998244353ul> > > > >(tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms_tag<998244353ul> > > > const&, tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms_tag<998244353ul> > > >, unsigned int):
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153 if (!m || m > n) m = n;
13 1377 vec<TPN poly_t::val_t> p(k * h), q(k * h), pp(k * h * 4), qq(k * h * 4), rr(k * h * 2);
14
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auto tifa_libs::powem_fps<tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_bs_tag<998244353ul> > > > >(tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_bs_tag<998244353ul> > > > const&, tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_bs_tag<998244353ul> > > >, unsigned int):
✓ Branch 5 taken 1182783 times.
✓ Branch 6 taken 51 times.
auto tifa_libs::powem_fps<tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms64_tag<998244353ul> > > > >(tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms64_tag<998244353ul> > > > const&, tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms64_tag<998244353ul> > > >, unsigned int):
✓ Branch 5 taken 1182783 times.
✓ Branch 6 taken 51 times.
auto tifa_libs::powem_fps<tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms_tag<998244353ul> > > > >(tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms_tag<998244353ul> > > > const&, tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms_tag<998244353ul> > > >, unsigned int):
✓ Branch 5 taken 1182783 times.
✓ Branch 6 taken 51 times.
3548502 flt_ (u32, i, 0, n + 1) p[i] = g[i], q[i] = -f[i];
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auto tifa_libs::powem_fps<tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_bs_tag<998244353ul> > > > >(tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_bs_tag<998244353ul> > > > const&, tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_bs_tag<998244353ul> > > >, unsigned int):
✓ Branch 0 taken 454 times.
✓ Branch 1 taken 51 times.
auto tifa_libs::powem_fps<tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms64_tag<998244353ul> > > > >(tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms64_tag<998244353ul> > > > const&, tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms64_tag<998244353ul> > > >, unsigned int):
✓ Branch 0 taken 454 times.
✓ Branch 1 taken 51 times.
auto tifa_libs::powem_fps<tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms_tag<998244353ul> > > > >(tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms_tag<998244353ul> > > > const&, tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms_tag<998244353ul> > > >, unsigned int):
✓ Branch 0 taken 454 times.
✓ Branch 1 taken 51 times.
1515 while (n) {
16 1362 pp.assign(k * h * 4, 0), qq.assign(k * h * 4, 0);
17
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auto tifa_libs::powem_fps<tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_bs_tag<998244353ul> > > > >(tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_bs_tag<998244353ul> > > > const&, tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_bs_tag<998244353ul> > > >, unsigned int):
✓ Branch 9 taken 1319061 times.
✓ Branch 10 taken 454 times.
auto tifa_libs::powem_fps<tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms64_tag<998244353ul> > > > >(tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms64_tag<998244353ul> > > > const&, tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms64_tag<998244353ul> > > >, unsigned int):
✓ Branch 9 taken 1319061 times.
✓ Branch 10 taken 454 times.
auto tifa_libs::powem_fps<tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms_tag<998244353ul> > > > >(tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms_tag<998244353ul> > > > const&, tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms_tag<998244353ul> > > >, unsigned int):
✓ Branch 9 taken 1319061 times.
✓ Branch 10 taken 454 times.
3958545 flt_ (u32, i, 0, k) copy(begin(p) + i * h, begin(p) + i * h + n + 1, begin(pp) + i * h * 2);
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auto tifa_libs::powem_fps<tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_bs_tag<998244353ul> > > > >(tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_bs_tag<998244353ul> > > > const&, tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_bs_tag<998244353ul> > > >, unsigned int):
✓ Branch 9 taken 1319061 times.
✓ Branch 10 taken 454 times.
auto tifa_libs::powem_fps<tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms64_tag<998244353ul> > > > >(tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms64_tag<998244353ul> > > > const&, tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms64_tag<998244353ul> > > >, unsigned int):
✓ Branch 9 taken 1319061 times.
✓ Branch 10 taken 454 times.
auto tifa_libs::powem_fps<tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms_tag<998244353ul> > > > >(tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms_tag<998244353ul> > > > const&, tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms_tag<998244353ul> > > >, unsigned int):
✓ Branch 9 taken 1319061 times.
✓ Branch 10 taken 454 times.
3958545 flt_ (u32, i, 0, k) copy(begin(q) + i * h, begin(q) + i * h + n + 1, begin(qq) + i * h * 2);
19 1362 qq[k * h * 2] += 1, core4.dif(pp), core4.dif(qq);
20
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auto tifa_libs::powem_fps<tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_bs_tag<998244353ul> > > > >(tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_bs_tag<998244353ul> > > > const&, tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_bs_tag<998244353ul> > > >, unsigned int):
✓ Branch 3 taken 43484464 times.
✓ Branch 4 taken 454 times.
auto tifa_libs::powem_fps<tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms64_tag<998244353ul> > > > >(tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms64_tag<998244353ul> > > > const&, tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms64_tag<998244353ul> > > >, unsigned int):
✓ Branch 3 taken 43484464 times.
✓ Branch 4 taken 454 times.
auto tifa_libs::powem_fps<tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms_tag<998244353ul> > > > >(tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms_tag<998244353ul> > > > const&, tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms_tag<998244353ul> > > >, unsigned int):
✓ Branch 3 taken 43484464 times.
✓ Branch 4 taken 454 times.
130454754 for (u32 i = 0; i < k * h * 4; i += 2) swap(qq[i], qq[i + 1]);
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auto tifa_libs::powem_fps<tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_bs_tag<998244353ul> > > > >(tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_bs_tag<998244353ul> > > > const&, tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_bs_tag<998244353ul> > > >, unsigned int):
✓ Branch 3 taken 86968928 times.
✓ Branch 4 taken 454 times.
auto tifa_libs::powem_fps<tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms64_tag<998244353ul> > > > >(tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms64_tag<998244353ul> > > > const&, tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms64_tag<998244353ul> > > >, unsigned int):
✓ Branch 3 taken 86968928 times.
✓ Branch 4 taken 454 times.
auto tifa_libs::powem_fps<tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms_tag<998244353ul> > > > >(tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms_tag<998244353ul> > > > const&, tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms_tag<998244353ul> > > >, unsigned int):
✓ Branch 3 taken 86968928 times.
✓ Branch 4 taken 454 times.
260908146 flt_ (u32, i, 0, k * h * 4) pp[i] *= qq[i];
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auto tifa_libs::powem_fps<tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_bs_tag<998244353ul> > > > >(tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_bs_tag<998244353ul> > > > const&, tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_bs_tag<998244353ul> > > >, unsigned int):
✓ Branch 4 taken 43484464 times.
✓ Branch 5 taken 454 times.
auto tifa_libs::powem_fps<tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms64_tag<998244353ul> > > > >(tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms64_tag<998244353ul> > > > const&, tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms64_tag<998244353ul> > > >, unsigned int):
✓ Branch 4 taken 43484464 times.
✓ Branch 5 taken 454 times.
auto tifa_libs::powem_fps<tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms_tag<998244353ul> > > > >(tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms_tag<998244353ul> > > > const&, tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms_tag<998244353ul> > > >, unsigned int):
✓ Branch 4 taken 43484464 times.
✓ Branch 5 taken 454 times.
130454754 flt_ (u32, i, 0, k * h * 2) rr[i] = qq[i * 2] * qq[i * 2 + 1];
23 1362 core4.dit(pp), core2.dit(rr), rr[0] -= 1, p.assign(k * h, 0), q.assign(k * h, 0);
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auto tifa_libs::powem_fps<tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_bs_tag<998244353ul> > > > >(tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_bs_tag<998244353ul> > > > const&, tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_bs_tag<998244353ul> > > >, unsigned int):
✓ Branch 0 taken 2638122 times.
✓ Branch 1 taken 454 times.
auto tifa_libs::powem_fps<tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms64_tag<998244353ul> > > > >(tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms64_tag<998244353ul> > > > const&, tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms64_tag<998244353ul> > > >, unsigned int):
✓ Branch 0 taken 2638122 times.
✓ Branch 1 taken 454 times.
auto tifa_libs::powem_fps<tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms_tag<998244353ul> > > > >(tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms_tag<998244353ul> > > > const&, tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms_tag<998244353ul> > > >, unsigned int):
✓ Branch 0 taken 2638122 times.
✓ Branch 1 taken 454 times.
7915728 flt_ (u32, i, 0, k * 2)
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auto tifa_libs::powem_fps<tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_bs_tag<998244353ul> > > > >(tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_bs_tag<998244353ul> > > > const&, tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_bs_tag<998244353ul> > > >, unsigned int):
✓ Branch 4 taken 20007572 times.
✓ Branch 5 taken 2638122 times.
auto tifa_libs::powem_fps<tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms64_tag<998244353ul> > > > >(tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms64_tag<998244353ul> > > > const&, tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms64_tag<998244353ul> > > >, unsigned int):
✓ Branch 4 taken 20007572 times.
✓ Branch 5 taken 2638122 times.
auto tifa_libs::powem_fps<tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms_tag<998244353ul> > > > >(tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms_tag<998244353ul> > > > const&, tifa_libs::poly_impl_::poly<tifa_libs::polyntt_impl_::cconv_ntt<tifa_libs::mint_impl_::mint<tifa_libs::mint_ms_tag<998244353ul> > > >, unsigned int):
✓ Branch 4 taken 20007572 times.
✓ Branch 5 taken 2638122 times.
67937082 flt_ (u32, j, 0, n / 2 + 1) p[i * h / 2 + j] = pp[i * h * 2 + j * 2 + n % 2], q[i * h / 2 + j] = rr[i * h + j];
26 1362 n /= 2, h /= 2, k *= 2;
27 }
28 153 poly_t s{begin(p), begin(p) + k}, t{begin(q), begin(q) + k};
29 153 t.push_back(1), s.reverse(), t.reverse();
30 153 return (s * inv_fps(t, m + 1)).pre(m + 1);
31 153 }
32
33 } // namespace tifa_libs
34