bundles / scipy latest / scipy / linalg / _flapack / zpptri

lapack_function

`scipy.linalg._flapack:zpptri`

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

Signature

def zpptri(n, ap, lower = 0, overwrite_ap = 0)

Summary

Invert a positive definite matrix in packed storage from its Cholesky factorization (LAPACK zpptri).

Parameters

n : int: Order of the square matrix.
ap : ndarray: Cholesky factorization in packed storage, as returned by pptrf.
lower : int, optional: If nonzero, the lower triangle of a is referenced and the factor is lower triangular; otherwise the upper. Default is 0.
overwrite_ap : int, optional: If nonzero, ap may be overwritten in place. Default is 0.

Returns

uli : ndarray: The inverse in packed storage, overwriting ap.
info : int: 0 on success; if negative, the -info-th argument had an illegal value.

Aliases

scipy.linalg._flapack.zpptri