Bausager
6b8a7ab582
Sync public mirror / sync (push) Failing after 29s
almost complete. Need to doublecheck names for functions in *_serial.h
36 lines
798 B
C++
36 lines
798 B
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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// ---------------- Matrix * Matrix ----------------
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template <typename T>
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inline utils::Matrix<T> matmul_serial(const utils::Matrix<T>& A, const utils::Matrix<T>& B){
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const uint64_t m = A.rows();
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const uint64_t n = A.cols(); // also B.rows()
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const uint64_t p = B.cols();
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if(n != B.rows()){
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throw std::runtime_error("matmul: dimension mismatch");
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}
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T tmp;
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utils::Matrix<T> C(m, p, T{0});
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for (uint64_t i = 0; i < m; ++i){
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for (uint64_t j = 0; j < n; ++j){
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tmp = A(i,j);
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for (uint64_t k = 0; k < p; ++k){
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C(i,k) += tmp * B(j,k);
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}
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}
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}
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return C;
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}
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} // namespace numerics
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