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Flux-openbuild/include/numerics/matdiv.h
2025-10-20 12:24:21 +00:00

91 lines
2.1 KiB
C++

#ifndef _matdiv_n_
#define _matdiv_n_
#include "./utils/matrix.h"
#include "./core/omp_config.h"
namespace numerics{
template <typename T>
utils::Matrix<T> matdiv(const utils::Matrix<T>& A, const utils::Vector<T>& b, std::string method){
utils::Matrix<T> C = A;
if (method == "row"){
for (uint64_t i = 0; i < A.rows(); ++i){
for (uint64_t j = 0; j < A.cols(); ++j){
C(i,j) /= b[j];
}
}
}else if (method == "col"){
for (uint64_t i = 0; i < A.rows(); ++i){
for (uint64_t j = 0; j < A.cols(); ++j){
C(i,j) /= b[i];
}
}
}else{
throw std::runtime_error("matdiv: choose div by: 'row' or 'col'");
}
return C;
}
template <typename T>
void inplace_matdiv(utils::Matrix<T>& A, const utils::Matrix<T>& B){
const uint64_t rows = A.rows();
const uint64_t cols = A.cols();
if ((rows != B.rows()) || (cols != B.cols())){
throw std::runtime_error("inplace_matdiv: rows and cols are not the same'");
}
for (uint64_t i = 0; i < rows; ++i){
for (uint64_t j = 0; j < cols; ++j){
A(i,j) /= B(i,j);
}
}
}
template <typename T>
utils::Matrix<T> matdiv(const utils::Matrix<T>& A, const utils::Matrix<T>& B){
const uint64_t rows = A.rows();
const uint64_t cols = A.cols();
if ((rows != B.rows()) || (cols != B.cols())){
throw std::runtime_error("matdiv: choose div by: 'row' or 'col'");
}
utils::Matrix<T> C = A;
inplace_matdiv(C, B);
return C;
}
template <typename T>
void inplace_matdiv(utils::Matrix<T>& A, const T b){
const uint64_t rows = A.rows();
const uint64_t cols = A.cols();
for (uint64_t i = 0; i < rows; ++i){
for (uint64_t j = 0; j < cols; ++j){
A(i,j) /= b;
}
}
}
} // namespace numerics
#endif // _matdiv_n_