qrupdate ☆

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Description:
Fast updates of QR and Cholesky decompositions

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: linear-algebra numerical-computing fortran scientific-computing matrix-library

Install: brew install qrupdate

About:
Qrupdate is a high-performance Fortran library designed for efficient updates of QR and Cholesky decompositions. It allows for rapid modifications of matrix decompositions without the computational expense of recalculating them from scratch. This specialized tool is ideal for iterative algorithms in scientific computing and numerical linear algebra.

Key Features:

Optimized for speed in updating QR and Cholesky decompositions
Provides routines for adding and removing rows/columns from matrices
Written in Fortran for maximum performance in numerical computing
Lightweight and easy to integrate into existing projects

Use Cases:

Accelerating iterative least squares solutions in scientific simulations
Implementing efficient covariance matrix updates in statistical analysis
Solving linear systems where matrix data changes incrementally

Alternatives:

LAPACK – LAPACK provides general linear algebra routines, while Qrupdate is specialized for faster updates of existing decompositions.
Eigen – Eigen is a C++ template library offering broader linear algebra features, whereas Qrupdate is a focused Fortran library for specific decomposition updates.

Version History

Detected	Version	Rev	Change	Commit
Feb 8, 2026 6:25pm		0	REVISION_ONLY	2a53d58c
Sep 11, 2025 12:18pm		15	VERSION_BUMP	a77229f6