tridiax

library0.2.1pypypi✓ verified 81d ago

A small Python library for efficiently solving tridiagonal systems of linear equations (Thomas algorithm). Current version 0.2.1, released with basic functionality and minimal API. Maintained as needed.

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pip install tridiax

INSTALL

IMPORT

SIG · TRIDIAX

tridiax

devopspythonv0.2.1

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

thomas_solve

✓ from tridiax import thomas_solve

✗ from tridiax import solve

divide_and_conquer

✓ from tridiax import divide_and_conquer

stone_solve

✓ from tridiax import stone_solve

Solve a tridiagonal system using the Thomas algorithm.

import os import numpy as np from tridiax import solve # Example tridiagonal system: # [1 2 0] [x1] [5] # [3 4 5] [x2] = [10] # [0 6 7] [x3] [15] lower = np.array([3, 6], dtype=float) diag = np.array([1, 4, 7], dtype=float) upper = np.array([2, 5], dtype=float) rhs = np.array([5, 10, 15], dtype=float) solution = solve(lower, diag, upper, rhs) print(solution)

Debug

Known issues

breakingThe function `solve` may not be imported directly if version < 0.2.0. Older versions used a different module structure.

fix

Use `from tridiax import solve` for 0.2.0+.

affects: <0.2.0

gotchaThe input arrays must be of type `float` or will raise a TypeError. Using integer arrays fails silently in some numpy versions.

fix

Convert inputs to float via `np.array(..., dtype=float)`.

affects: all

gotchaThe `solve` function does not check for diagonal dominance or singularity. A singular system may produce incorrect results without error.

fix

Manually verify matrix condition before calling solve.

affects: all

deprecatedPassing keyword arguments for the individual diagonals is deprecated in 0.2.1; use positional arguments instead.

fix

Call `solve(lower, diag, upper, rhs)` with positional args.

affects: 0.2.1

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Version history

0.2.1latest on PyPI · released Dec 5, 2024

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Dependencies

No dependency data recorded yet.

Agent activity

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Resources

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