FLINT3.7.0-dev

arb_mat_solve_ldl_precomp, arb_mat_inv_ldl_precomp

Synopsis#include <flint/arb_mat.h>
void arb_mat_solve_ldl_precomp(arb_mat_t X, const arb_mat_t L, const arb_mat_t B, slong prec)source
void arb_mat_inv_ldl_precomp(arb_mat_t X, const arb_mat_t L, slong prec)source

Solve AX = B, respectively compute A^{-1} (by the method of [Kri2013]), given the LDL^T decomposition of A encoded in L as computed by arb_mat_ldl (assumed valid). X may be the same object as B but not as L.

References#

  • [Kri2013] A. Krishnamoorthy and D. Menon, "Matrix Inversion Using Cholesky Decomposition" Proc. of the International Conference on Signal Processing Algorithms, Architectures, Arrangements, and Applications (SPA-2013), pp. 70-72, 2013.
Cite this page

The FLINT team, “arb_mat_solve_ldl_precomp, arb_mat_inv_ldl_precomp (arb_mat.h),” FLINT: Fast Library for Number Theory, documentation, version 3.7.0-dev, 2026. https://flintlib.org/doc/arb_mat/arb_mat_solve_ldl_precomp.html (generated 2026-10-20).