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utilities.c
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utilities.c
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#include "utilities.h"
#include "griddata.h"
#include <stdio.h>
#include "transformation.h"
#include <math.h>
double radiussquared(double a, double b){
return a*a+b*b;
}
double one(double a, double b){
return 1;
}
void print_int_mat(unsigned **mat,unsigned n,unsigned m){
for(int i=0;i<n;i++){
for(int j=0;j<m;j++){
printf("%i ",mat[i][j]);
}
printf("\n");
}
}
double TensorVandermonde(unsigned p,unsigned p_ref,unsigned i, unsigned alpha, GridData *data){
if(p==p_ref)return data->VandermondeM[i][alpha];
return data->derivativeVandermondeM[i][alpha];
}
double norm_l2(FunctionPointer f,GridData *data){
double sum=0;
double f_val,tx,ty;
double det_dfe;
for(unsigned e=0;e<data->E;e++){
for(unsigned i=0;i<_QUADRATURE_NODES;i++){
for(int j=0;j<_QUADRATURE_NODES;j++){
element_transformation(e,data->q_nodes[i],data->q_nodes[j],&tx,&ty,data);
f_val = f(tx,ty);
det_dfe=fabs(determinant_jacobian_transformation(e,data->q_nodes[i],data->q_nodes[j],data));
sum = sum + data->q_weights[i] * data->q_weights[j] * f_val * f_val * det_dfe;
}
}
}
return sqrt(sum);
}