scipy.linalg.lapack.zsyconv#
- scipy.linalg.lapack.zsyconv(a, ipiv, lower=0, way=0, overwrite_a=0) = <flapack function zsyconv>#
Convert the Bunch-Kaufman factorization between its packed and its expanded storage (LAPACK
zsyconv).- Parameters:
- andarray
The factorization, as returned by
sytrf.- ipivndarray
Pivot indices from the Bunch-Kaufman factorization, 1-based exactly as
sytrf/hetrfreturned them – this group shifts at neither end.- lowerint, optional
If nonzero, the lower triangle of a is referenced; otherwise the upper. Default is 0.
- wayint, optional
0 to convert the packed form into a plus e, 1 to revert. An integer here rather than the
'C'/'R'letter LAPACK takes. Default is 0.- overwrite_aint, optional
If nonzero, a may be overwritten in place. Default is 0.
- Returns:
- andarray
The converted factorization.
- endarray
Off-diagonal entries of the 2x2 blocks of
D, lengthn.- infoint
0 on success; if negative, the
-info-th argument had an illegal value.