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common.hh
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Sun, Oct 20, 22:22

common.hh
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/**
* @file common.hh
* @author Till Junge <junge@lsmspc42.epfl.ch>
* @date Wed Apr 4 15:59:37 2012
*
* @brief common parts for the cadd_mesher
*
* @section LICENSE
*
* <insert lisence here>
*
*/
/* -------------------------------------------------------------------------- */
#ifndef __cadd_mesh_COMMON_HH__
#define __cadd_mesh_COMMON_HH__
#include <iostream>
#include <string>
#include <vector>
typedef double Real;
typedef unsigned int Uint;
const static Uint twoD = 2;
const static Uint threeD = 3;
const static Uint indent_incr = 2;
void indent_space(std::ostream & stream, int indent = 0);
template <typename numeric>
inline void keep_max(numeric & value, const numeric & comparison) {
if (comparison > value) {
value = comparison;
}
}
template <typename numeric>
inline void keep_min(numeric & value, const numeric & comparison) {
if (comparison < value) {
value = comparison;
}
}
template <typename numeric>
inline numeric square(numeric val) {return val*val;}
template <typename el_typo>
void print_vector(const std::vector<el_typo> & vec, const std::string & name,
Uint stride = 1, int indent = 0, std::ostream & stream = std::cout){
indent_space(stream, indent);
stream << "Vector '" << name << "': " <<std::endl;
const Uint max_size = 12;
Uint size = vec.size()/stride;
Uint i;
for (i = 0; i < size && i < max_size; ++i) {
stream.width(7);
indent_space(stream, indent+indent_incr);
stream << i << " : " ;
for (Uint j = 0; j < stride-1 ; ++j) {
stream.width(4);
stream << std::showpos << vec.at(stride*i +j) << ",\t" ;
}
stream.width(4);
stream << vec.at(stride*i+stride-1) << std::endl;
}
if (size > max_size) {
stream.width(7);
indent_space(stream, indent+indent_incr);
stream << i << " : ";
for (Uint j = 0; j < stride-1; ++j) {
stream.width(4);
stream << std::showpos << "..." << ",\t";
}
stream.width(4);
stream << "..." << std::endl;
}
}
template <typename el_typo>
void print_array(el_typo * array, Uint length, const std::string & name, std::ostream & stream=std::cout) {
stream << "Array '" << name << "': (" ;
for (Uint i = 0; i < length-1 ; ++i) {
stream << array[i] << ", ";
}
stream << array[length-1] << ")" << std::endl;
}
//This function sets a vec1's components to vec2's components
template <Uint DIM>
inline void vector_set(Real * vec1, const Real * vec2) {
for (Uint i = 0; i < DIM ; ++i) {
vec1[i] = vec2[i];
}
}
template<Uint DIM>
inline Real dot_prod(const Real vec1[DIM], const Real vec2[DIM]) {
Real prod = 0;
for (Uint i = 0 ; i < DIM ; ++i) {
prod += vec1[i]*vec2[i];
}
return prod;
}
// stretches a vector
template<Uint DIM>
inline void vector_stretch(Real * vector, const Real * factors) {
for (Uint i = 0; i < DIM ; ++i) {
vector[i] *= factors[i];
}
}
template<Uint DIM>
inline void vector_scale(Real * vector, const Real & factor) {
for (Uint i = 0; i < DIM ; ++i) {
vector[i] *= factor;
}
}
//This function adds factor times addition to vec1
template <Uint DIM>
inline void vector_incr(Real * vec1, const Real * addition, const Real & factor=1) {
for (Uint i = 0; i < DIM ; ++i) {
vec1[i] += factor * addition[i];
}
}
// vector from point 1 to point 2
template<Uint DIM>
inline void vector_difference(Real * vec, const Real * from, const Real * to,
const Real & factor = 1) {
vector_set<DIM>(vec, to);
vector_incr<DIM>(vec, from, -1);
vector_scale<DIM>(vec, factor);
}
#endif /* __cadd_mesh_COMMON_HH__ */

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