Crate tensor4all_tensorbackend 

Tensor storage and linear algebra backend for tensor4all.

This crate provides:

• Storage: Dynamic snapshot storage for logical tensor values
• StructuredStorage: axis_classes-aware materialized snapshots
• AnyScalar: Dynamic scalar type backed by rank-0 tenferro::Tensor
• tenferro-backed execution helpers for tensor algebra

Feature Flags

• backend-tenferro (default): Use tenferro backend for linalg/einsum

Structs

AllocatorPressureRelief

Result reported by release_process_allocator_cached_memory.

FullPivLuMatrixResult

Result of complete-pivoting LU decomposition on Matrix values.

FullPivLuResult

Result of complete-pivoting LU decomposition P A Q^T = L U.

Matrix

A dense 2D matrix in column-major layout.

Storage

Storage backend for tensor data.

StructuredStorage

Structured tensor snapshot storage.

SvdResult

Result of SVD decomposition A = U * diag(S) * Vt.

Enums

NativeTensorReadInput

Read-only native tensor input that can either borrow external payload data or own a temporary materialized tensor.

StorageError

Errors returned by storage payload and elementwise operations.

StorageKind

Classifies the compact layout used by Storage.

Traits

BackendLinalgScalar

Scalar bound accepted by tensor4all’s typed linalg wrappers.

BlasMul

BLAS-backed matrix multiplication dispatch.

MatrixScalar

Scalar bound for dense backend matrix utilities.

MatrixSolveScalar

Scalar types supported by solve_matrix.

StorageScalar

Trait for scalar types that can be stored in Storage.

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

axpby_native_tensor

Compute a * lhs + b * rhs.

axpby_storage_native

Compute a * lhs + b * rhs over storages via native tensors.

conj_native_tensor

Conjugate a native tensor.

contract_native_tensor

Contract two native tensors along matching axes.

contract_storage

Contract two storage tensors along specified axes.

contract_storage_native

Contract storages via native tensors.

default_eager_ctx

Return the process-global eager context used for reverse-mode AD.

dense_native_tensor_from_col_major

Build a dense native tensor from column-major data.

diag_native_tensor_from_col_major

Build a dense native tensor whose logical values are diagonal.

einsum_native_tensor_reads

Execute a cached einsum over read-only native tensor inputs.

einsum_native_tensors

Execute a cached einsum over borrowed native tensors.

einsum_native_tensors_owned

Execute a cached einsum over owned native tensors.

from_vec2d

Create a matrix from a 2D vector.

full_piv_lu_backend

Compute complete-pivoting LU with the configured tenferro backend.

full_piv_lu_matrix

Compute complete-pivoting LU for a column-major Matrix.

make_mut_storage

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

mat_mul

Matrix multiplication: A * B.

mindim

Get the minimum dimension from a slice of dimensions.

native_tensor_primal_to_dense_c64_col_major

Materialize dense Complex64 values from a native tensor.

native_tensor_primal_to_dense_col_major

Materialize dense column-major values from a native tensor.

native_tensor_primal_to_dense_f64_col_major

Materialize dense f64 values from a native tensor.

native_tensor_primal_to_diag_c64

Extract the diagonal payload from a complex native tensor.

native_tensor_primal_to_diag_f64

Extract the diagonal payload from a real native tensor.

native_tensor_primal_to_storage

Materialize a native tensor into dense storage.

outer_product_native_tensor

Compute the outer product of two native tensors.

outer_product_storage_native

Outer-product storages via native tensors.

permute_native_tensor

Permute axes of a native tensor.

permute_storage_native

Permute storage by round-tripping through native tensors.

print_and_reset_native_einsum_profile

Print and clear the aggregated native einsum profile.

qr_backend

Compute a thin/economy QR decomposition on a typed tensor.

qr_native_tensor

Compute a QR decomposition on a native tensor.

release_process_allocator_cached_memory

Ask the process allocator to return cached/free memory to the operating system.

reset_native_einsum_profile

Reset the aggregated native einsum profile.

reshape_col_major_native_tensor

Reshape a native tensor without changing its column-major linearization.

scale_native_tensor

Multiply a native tensor by a dynamic scalar.

scale_storage_native

Scale storage by a scalar via native tensors.

solve_backend

Solve A X = B with the configured tenferro backend.

solve_matrix

Solve A X = B for column-major Matrix values.

storage_payload_native_read_input

Build a read-only native tensor input over the compact storage payload.

storage_to_native_tensor

Convert storage to a dense native tensor.

submatrix

Get a submatrix by selecting specific rows and columns.

submatrix_argmax

Find the position and value of the maximum absolute value in a submatrix.

sum_native_tensor

Sum all elements of a native tensor, returning a dynamic scalar.

svd_backend

Compute a thin/economy SVD on a typed tensor.

svd_native_tensor

Compute an SVD on a native tensor.

swap_cols

Swap two columns in a matrix in-place.

swap_rows

Swap two rows in a matrix in-place.

tangent_native_tensor

Return the tangent tensor when present.

transpose

Transpose the matrix.

with_default_backend

Run a closure against the process-global CPU backend.

Type Aliases

AnyScalar

Backward-compatible scalar type name used across tensor4all APIs.

StorageResult

Result type returned by storage methods that can fail with StorageError.