linalg/include/nk/linalg/solvers.hpp

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// toolboxes/linalg/include/nk/linalg/solvers.hpp
//
// Linear-system solvers: linsolve, lsqminnorm, lsqnonneg.
// Migrated from toolboxes/builtin/src/language/arrays/{matrix,lsq}.cpp.
 
#pragma once
 
#include <memory_resource>
#include <string>
#include <nk/value/value.hpp>
 
namespace nk::linalg {

 

Value linsolve(const Value &A, const Value &B, std::pmr::memory_resource *mr = nullptr);

Value lsqminnorm(const Value &A, const Value &B, bool have_tol, double tol_user,
                 std::pmr::memory_resource *mr = nullptr);

struct NnlsResult {
    Value x;             
    double resnorm;      
    Value residual;      
    int exitflag;        
    int iterations;      
    std::string algorithm; 
    std::string message; 
};

NnlsResult lsqnonneg_impl(const Value &C, const Value &d,
                          std::pmr::memory_resource *mr = nullptr);
 

} // namespace nk::linalg