bundles / scipy 2.0.0.dev0+git20260907.41eeb59 / scipy / linalg / _flapack / dpftri

lapack_function

`scipy.linalg._flapack:dpftri`

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

Signature

def dpftri(n, a, transr = N, uplo = U, overwrite_a = 0)

Summary

Invert a positive definite matrix in rectangular full packed (RFP) storage from its Cholesky factorization (LAPACK dpftri).

Parameters

n : int: Order of the square matrix.
a : ndarray: Cholesky factorization in RFP storage, as returned by pftrf.
transr : str, optional: 'N' for the normal RFP layout, 'T' for the transposed one. Default is 'N'.
uplo : str, optional: 'U' if a holds the upper triangle, 'L' if lower. Default is 'U'.
overwrite_a : int, optional: If nonzero, a may be overwritten in place. Default is 0.

Returns

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

Aliases

scipy.linalg._flapack.dpftri