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devmods/solv-table updated

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Zeno Rogue 2022-07-12 10:57:48 +02:00
parent 0b29dc3964
commit 85b4785447
1 changed files with 13 additions and 11 deletions
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24
devmods/solv-table.cpp
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@ -17,7 +17,7 @@
// Add e.g. '-dim 128 128 128' before -write to generate
// a more/less precise table.
// # ./hyper -geo Sol -iz-list -sn-unittest -build -write solv-geodesics-a.dat -visualize devmods/san1/solva-%04d.png -improve -write solv-geodesics.dat -visualize devmods/san1/solvb-%04d.png
// # ./hyper -rk-steps 100 -geo Sol -iz-list -sn-unittest -build -write solv-geodesics-a.dat -visualize devmods/san1/solva-%04d.png -improve -write solv-geodesics.dat -visualize devmods/san1/solvb-%04d.png
// # ./hyper -dim 32 32 32 -geo 3:1/2 -iz-list -sn-unittest -build -write ssol-geodesics-a.dat -visualize devmods/san1/ssola-%04d.png -improve -write ssol-geodesics.dat -visualize devmods/san1/ssolb-%04d.png
// # ./hyper -dim 32 32 32 -geo 3:2 -iz-list -sn-unittest -build -write shyp-geodesics.dat -visualize devmods/san1/shypa-%04d.png
@ -51,11 +51,11 @@ int max_iter = 999999;
hyperpoint fail(.1, .2, .3, .4);
hyperpoint iterative_solve(hyperpoint xp, hyperpoint candidate, int prec, ld minerr, bool debug = false) {
hyperpoint iterative_solve(hyperpoint xp, hyperpoint candidate, ld minerr, bool debug = false) {
transmatrix T = Id; T[0][1] = 8; T[2][2] = 5;
auto f = [&] (hyperpoint x) { return nisot::numerical_exp(x, prec); }; // T * x; };
auto f = [&] (hyperpoint x) { return nisot::numerical_exp(x); }; // T * x; };
auto ver = f(candidate);
ld err = solerror(xp, ver);
@ -136,6 +136,8 @@ hyperpoint iterative_solve(hyperpoint xp, hyperpoint candidate, int prec, ld min
nextiter: ;
}
// println(hlog, "#it = ", iter);
return at;
}
@ -201,10 +203,12 @@ void build_sols(int PRECX, int PRECY, int PRECZ) {
if((nih && iz == 0) || iz == PRECZ-1) return;
auto solve_at = [&] (int ix, int iy) {
// if(ix != 30 || iy <= 50 || iz) return;
ld x = ix_to_x(ix / (PRECX-1.));
ld y = ix_to_x(iy / (PRECY-1.));
ld z = iz_to_z(iz / (PRECZ-1.));
auto v = hyperpoint ({x,y,z,1});
vector<hyperpoint> candidates;
@ -212,8 +216,6 @@ void build_sols(int PRECX, int PRECY, int PRECZ) {
candidates.push_back(point3(0,0,0));
static constexpr int prec = 100;
// sort(candidates.begin(), candidates.end(), [&] (hyperpoint a, hyperpoint b) { return solerror(v, direct_exp(a, prec)) > solerror(v, direct_exp(b, prec)); });
// cand_best = candidates.back();
@ -221,16 +223,16 @@ void build_sols(int PRECX, int PRECY, int PRECZ) {
vector<hyperpoint> solved_candidates;
for(auto c: candidates) {
auto solt = iterative_solve(v, c, prec, 1e-6, false);
auto solt = iterative_solve(v, c, 1e-6, false);
solved_candidates.push_back(solt);
if(solerror(v, nisot::numerical_exp(solt, prec)) < 1e-9) break;
if(solerror(v, nisot::numerical_exp(solt)) < 1e-9) break;
}
sort(solved_candidates.begin(), solved_candidates.end(), [&] (hyperpoint a, hyperpoint b) { return solerror(v, nisot::numerical_exp(a, prec)) > solerror(v, nisot::numerical_exp(b, prec)); });
sort(solved_candidates.begin(), solved_candidates.end(), [&] (hyperpoint a, hyperpoint b) { return solerror(v, nisot::numerical_exp(a)) > solerror(v, nisot::numerical_exp(b)); });
cand = solved_candidates.back();
auto xerr = solerror(v, nisot::numerical_exp(cand, prec));
auto xerr = solerror(v, nisot::numerical_exp(cand));
if(cand == fail) {
println(hlog, format("[%2d %2d %2d] FAIL", iz, iy, ix));
@ -239,7 +241,7 @@ void build_sols(int PRECX, int PRECY, int PRECZ) {
else if(xerr > 1e-3) {
println(hlog, format("[%2d %2d %2d] ", iz, iy, ix));
println(hlog, "f(?) = ", v);
println(hlog, "f(", cand, ") = ", nisot::numerical_exp(cand, prec));
println(hlog, "f(", cand, ") = ", nisot::numerical_exp(cand));
println(hlog, "error = ", xerr);
println(hlog, "canned = ", compress(azeq_to_table(cand)));
max_err = xerr;
@ -418,7 +420,7 @@ hyperpoint find_optimal_geodesic(hyperpoint res) {
max_iter = 1000;
auto h1 = iterative_solve(res, p.first * quality(p) / hypot_d(3, p.first), 100, 1e-6);
if(deb) println(hlog, "h1 returns ", h1, " of length ", hypot_d(3, h1), " and error ", hypot_d(3, nisot::numerical_exp(h1, 100) - res));
if(deb) println(hlog, "h1 returns ", h1, " of length ", hypot_d(3, h1), " and error ", hypot_d(3, nisot::numerical_exp(h1) - res));
if(h1 == fail) return;