interpolation1d

done single-threded 1d interpolations; linear, rational, cubic spline, polynomial and barycentric. Still not done test functions yet. Still missing multi-core options.

src/main.cpp

@@ -3,21 +3,80 @@
 #include "./decomp/decomp.h"
 #include "./core/omp_config.h"
 
+#include "./modules/grid1d.h"
+#include "./modules/finitedifference1d.h"
+
+
 #include <iostream>
 #include <stdexcept>
 
+//#include "./numerics/interpolation/interpolation_linear.h"
 
 
 
 
 int main(int argc, char const *argv[])
 {    
+    
 
-    utils::Md A;
-    decomp::LUdcmpd lu(A);
+    utils::Vector<double> x(100, 0), y(100,0);
+    for (uint64_t i = 0; i < 100; ++i){
+        x[i] = i+1;
+        y[i] = 1 + i*0.1;
+    }
+    //y[9] = 1.5;
 
-    // Single-level, 16 threads, runtime may adjust
-    //omp_configure(/*max_levels=*/1, /*dynamic=*/true, /*threads_per_level=*/{16});
+    x.print();
+    y.print();
+
+    double p = 5.5;
+
+
+
+    numerics::interp_linear<double> linear(x,y);
+    numerics::interp_polynomial<double> polynomial(x,y, 3);
+    numerics::interp_cubic_spline<double> cubic_spline(x,y);
+    numerics::interp_rational<double> rational(x,y,2);
+    numerics::interp_barycentric<double> barycentric(x,y, 2);
+
+    std::cout << "=== interpolate: " << p << " ===" << std::endl;
+
+    std::cout << linear.interp(p) << std::endl;
+    std::cout << linear.interp(p) << std::endl;
+    std::cout << polynomial.interp(p) << std::endl; // error = polynomial.dy
+    std::cout << cubic_spline.interp(p) << std::endl;
+    std::cout << rational.interp(p) << std::endl;
+    std::cout << barycentric.interp(p) << std::endl;
+
+    p += 0.01;
+
+    std::cout << "=== interpolate: " << p << " ===" << std::endl;
+
+    std::cout << linear.interp(p) << std::endl;
+    std::cout << polynomial.interp(p) << std::endl;
+    std::cout << cubic_spline.interp(p) << std::endl;
+    std::cout << rational.interp(p) << std::endl;
+    std::cout << barycentric.interp(p) << std::endl;
+
+    p += 0.01;
+
+    std::cout << "=== interpolate: " << p << " ===" << std::endl;
+
+    std::cout << linear.interp(p) << std::endl;
+    std::cout << polynomial.interp(p) << std::endl;
+    std::cout << cubic_spline.interp(p) << std::endl;
+    std::cout << rational.interp(p) << std::endl;
+    std::cout << barycentric.interp(p) << std::endl;
+
+    p += 50.01;
+
+    std::cout << "=== interpolate: " << p << " ===" << std::endl;
+
+    std::cout << linear.interp(p) << std::endl;
+    std::cout << polynomial.interp(p) << std::endl;
+    std::cout << cubic_spline.interp(p) << std::endl;
+    std::cout << rational.interp(p) << std::endl;
+    std::cout << barycentric.interp(p) << std::endl;
 
 
     return 0;