Crate tensor4all_core 

Core tensor operations and types for tensor4all-rs.

This crate provides the foundational types and operations for tensor networks:

• Index types: DynIndex, Index, DynId for tensor indices
• Tag sets: TagSet, TagSetLike for metadata tagging
• Tensors: TensorDynLen for dynamic-rank dense tensors
• Operations: Contraction, SVD, QR decomposition, factorization

Example

use tensor4all_core::{Index, DynIndex, TensorDynLen};

// Create indices with dynamic identity
let i = Index::new_dyn(2);
let j = Index::new_dyn(3);

// Create a tensor
let data = vec![1.0, 2.0, 3.0, 4.0, 5.0, 6.0];
let t = TensorDynLen::from_dense(vec![i.clone(), j.clone()], data).unwrap();

Re-exports

pub use col_major_array::ColMajorArray;

pub use col_major_array::ColMajorArrayMut;

pub use col_major_array::ColMajorArrayRef;

pub use defaults::index;

pub use defaults::DefaultIndex;

pub use defaults::DefaultTagSet;

pub use defaults::DynId;

pub use defaults::DynIndex;

pub use defaults::Index;

pub use defaults::TagSet;

pub use index_like::ConjState;

pub use index_like::IndexLike;

pub use index_ops::check_unique_indices;

pub use index_ops::common_ind_positions;

pub use index_ops::common_inds;

pub use index_ops::hascommoninds;

pub use index_ops::hasind;

pub use index_ops::hasinds;

pub use index_ops::noncommon_inds;

pub use index_ops::prepare_contraction;

pub use index_ops::prepare_contraction_pairs;

pub use index_ops::replaceinds;

pub use index_ops::replaceinds_in_place;

pub use index_ops::union_inds;

pub use index_ops::unique_inds;

pub use index_ops::ContractionError;

pub use index_ops::ContractionSpec;

pub use index_ops::ReplaceIndsError;

pub use smallstring::SmallChar;

pub use smallstring::SmallString;

pub use smallstring::SmallStringError;

pub use tagset::Tag;

pub use tagset::TagSetError;

pub use tagset::TagSetLike;

pub use tensor_index::TensorIndex;

pub use defaults::tensordynlen as tensor;

pub use defaults::tensordynlen::compute_permutation_from_indices;

pub use defaults::tensordynlen::diag_tensor_dyn_len;

pub use defaults::tensordynlen::unfold_split;

pub use defaults::tensordynlen::RandomScalar;

pub use defaults::tensordynlen::TensorAccess;

pub use defaults::tensordynlen::TensorDynLen;

pub use tensor_like::AllowedPairs;

pub use tensor_like::Canonical;

pub use tensor_like::DirectSumResult;

pub use tensor_like::FactorizeAlg;

pub use tensor_like::FactorizeError;

pub use tensor_like::FactorizeOptions;

pub use tensor_like::FactorizeResult;

pub use tensor_like::TensorLike;

pub use defaults::contract;

pub use defaults::contract::contract_connected;

pub use defaults::contract::contract_multi;

pub use defaults::contract::print_and_reset_contract_profile;

pub use defaults::contract::reset_contract_profile;

pub use defaults::direct_sum::direct_sum;

pub use defaults::factorize::factorize;

pub use defaults::qr::default_qr_rtol;

pub use defaults::qr::qr;

pub use defaults::qr::qr_with;

pub use defaults::qr::set_default_qr_rtol;

pub use defaults::qr::QrError;

pub use defaults::qr::QrOptions;

pub use defaults::svd::default_svd_rtol;

pub use defaults::svd::set_default_svd_rtol;

pub use defaults::svd::svd;

pub use defaults::svd::svd_with;

pub use defaults::svd::SvdError;

pub use defaults::svd::SvdOptions;

pub use global_default::GlobalDefault;

pub use global_default::InvalidRtolError;

pub use truncation::DecompositionAlg;

pub use truncation::HasTruncationParams;

pub use truncation::TruncationParams;

Modules

any_scalar

Re-export of dynamic scalar utilities.

block_tensor

Block tensor type for GMRES with block matrices.

col_major_array

N-dimensional column-major array types.

defaults

Default concrete type implementations.

direct_sum

Re-export of direct sum operations.

factorize

Re-export of factorization operations.

global_default

Global default values with atomic access.

index_like

IndexLike trait for abstracting index types.

index_ops

Index operations (replacement, set operations, contraction preparation).

krylov

Krylov subspace methods for solving linear equations with abstract tensors.

qr

Re-export of QR decomposition operations.

scalar

Common scalar trait for tensor operations.

smallstring

Stack-allocated fixed-capacity string types for ITensors.jl compatibility.

storage

Re-export of snapshot storage utilities.

svd

Re-export of SVD decomposition operations.

tagset

Tag set types for tensor metadata.

tensor_index

TensorIndex trait for index operations on tensor-like objects.

tensor_like

TensorLike trait for unifying tensor types.

truncation

Common truncation options and traits.

Structs

Storage

Storage backend for tensor data.

StructuredStorage

Structured tensor snapshot storage.

Traits

CommonScalar

Common scalar trait for matrix and tensor operations.

SumFromStorage

Types that can be computed as the result of a reduction over Storage.

TensorElement

Public scalar element types supported by tensor4all dense/diag constructors.

Functions

make_mut_storage

Helper to get a mutable reference to storage, cloning if needed (COW).

mindim

Get the minimum dimension from a slice of dimensions. This is used for DiagTensor where all indices must have the same dimension.

print_and_reset_native_einsum_profile

Print and clear the aggregated native einsum profile.

reset_native_einsum_profile

Reset the aggregated native einsum profile.

Type Aliases

AnyScalar

Backward-compatible scalar type name used across tensor4all APIs.