86 lines
2.3 KiB
C++
86 lines
2.3 KiB
C++
#pragma once
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#include <cstdint> //uint64_t
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#include <stdexcept> // std::runtime_error
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#include "utils/vector.h"
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#include "utils/matrix.h"
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namespace numerics::detail{
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// ---------------- Scalar ----------------
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template <typename T>
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void inplace_sub_scalar_serial(utils::Matrix<T>& A, const T c) {
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const uint64_t rows = A.rows();
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const uint64_t cols = A.cols();
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for (uint64_t i = 0; i < rows; ++i){
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for (uint64_t j = 0; j < cols; ++j){
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A(i,j) -= c;
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}
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}
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}
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template <typename T>
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void inplace_sub_scalar_serial(utils::Vector<T>& v, const T c) {
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for (uint64_t i = 0; i < v.size(); ++i){
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v[i] -= c;
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}
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}
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// ---------------- Elemenwise ----------------
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template <typename T>
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void inplace_sub_elementwise_serial(utils::Matrix<T>& A, const utils::Matrix<T>& B) {
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const uint64_t rows = A.rows();
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const uint64_t cols = A.cols();
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if (rows != B.rows() || cols != B.cols()) {
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throw std::runtime_error("inplace_sub_elementwise_serial: dimension mismatch");
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}
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for (uint64_t i = 0; i < rows; ++i){
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for (uint64_t j = 0; j < cols; ++j){
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A(i,j) -= B(i,j);
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}
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}
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}
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template <typename T>
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void inplace_sub_elementwise_serial(utils::Vector<T>& v, const utils::Vector<T>& p) {
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if (v.size() != p.size()) {
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throw std::runtime_error("inplace_sub_elementwise_serial: dimension mismatch");
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}
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for (uint64_t i = 0; i < v.size(); ++i){
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v[i] -= p[i];
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}
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}
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// ---------------- Rowwise ----------------
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template <typename T>
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void inplace_sub_rowwise_serial(utils::Matrix<T>& A, const utils::Vector<T>& v) {
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const uint64_t rows = A.rows();
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const uint64_t cols = A.cols();
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if (cols != v.size()) {
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throw std::runtime_error("inplace_sub_rowwise_serial: dimension mismatch");
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}
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for (uint64_t i = 0; i < rows; ++i){
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for (uint64_t j = 0; j < cols; ++j){
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A(i,j) -= v[j];
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}
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}
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}
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// ---------------- Colwise ----------------
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template <typename T>
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void inplace_sub_colwise_serial(utils::Matrix<T>& A, const utils::Vector<T>& v) {
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const uint64_t rows = A.rows();
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const uint64_t cols = A.cols();
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if (rows != v.size()) {
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throw std::runtime_error("inplace_sub_colwise_serial: dimension mismatch");
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}
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for (uint64_t i = 0; i < rows; ++i){
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const T vi = v[i];
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for (uint64_t j = 0; j < cols; ++j){
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A(i,j) -= vi;
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}
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}
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}
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} // namespace numerics
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