norms.hpp

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// toolboxes/linalg/include/nk/linalg/norms.hpp
//
// Vector and matrix norms. Migrated from toolboxes/builtin/src/language/
// arrays/{matrix,predicates}.cpp.
//
// `norm` for the matrix 2-norm (p == 2) routes through `svd_values`,
// which still lives in toolboxes/builtin/include/nk/builtin/language/
// arrays/matrix.hpp at this point — that header is included by the
// implementation TU (norms.cpp). When SVD migrates here in a later
// group, this include will switch over to nk/linalg/decomp/svd.hpp.
 
#pragma once
 
#include <memory_resource>
#include <nk/value/value.hpp>
 
namespace nk::linalg {

 

Value norm_value(const Value &x, double p, std::pmr::memory_resource *mr = nullptr);

Value norm_inf(const Value &x, std::pmr::memory_resource *mr = nullptr);

Value norm_fro(const Value &x, std::pmr::memory_resource *mr = nullptr);

Value vecnorm(const Value &A, double p = 2.0, int dim = 0, std::pmr::memory_resource *mr = nullptr);
 

} // namespace nk::linalg