bundles / scipy latest / scipy / linalg / _flapack / checon

lapack_function

`scipy.linalg._flapack:checon`

source: build-install/usr/lib/python3.14/site-packages/scipy/linalg/_flapack.cpython-314-x86_64-linux-gnu.so

Signature

def checon(a, ipiv, anorm, lower = 0)

Summary

Estimate the reciprocal condition number of a Hermitian indefinite matrix from its Bunch-Kaufman factorization (LAPACK checon).

Parameters

a : ndarray: The factorization, as returned by the corresponding *trf.
ipiv : ndarray: Pivot indices from the Bunch-Kaufman factorization, 1-based exactly as sytrf/hetrf returned them -- this group shifts at neither end.
anorm : float: 1-norm of the original matrix.
lower : int, optional: If nonzero, the lower triangle of a is referenced; otherwise the upper. Default is 0.

Returns

rcond : float: Estimate of the reciprocal condition number.
info : int: 0 on success; if negative, the -info-th argument had an illegal value.

Aliases

scipy.linalg._flapack.checon