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Lisa Pizzo 2025-12-04 12:06:44 +01:00
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Sheet5/bench_funcs.h
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#pragma once
#include <vector>
#include <cstddef>
// scalar and vector operations
double sum_basic(const std::vector<double>& x); // A) parallel sum
double dot_basic(const std::vector<double>& x, const std::vector<double>& y); // A) inner product
double dot_kahan(const std::vector<double>& x, const std::vector<double>& y);
double norm_basic(const std::vector<double>& x);
// matrix-vector, matrix-matrix, polynomial
void matvec_rowmajor(const std::vector<double>& A, std::size_t M, std::size_t N,
const std::vector<double>& x, std::vector<double>& b);
void matmul_rowmajor(const std::vector<double>& A, std::size_t M, std::size_t L,
const std::vector<double>& B, std::size_t N,
std::vector<double>& C);
void polyp_horner(const std::vector<double>& a, const std::vector<double>& x,
std::vector<double>& y);
struct CSR {
std::size_t n;
std::vector<double> val;
std::vector<std::size_t> col;
std::vector<std::size_t> row_ptr;
};
void jacobi_csr(const CSR& K, const std::vector<double>& f, std::vector<double>& u,
std::size_t max_iter, double omega, double tol);