scipy.linalg.lapack.zpftrs#
- scipy.linalg.lapack.zpftrs(n, a, b, transr='N', uplo='U', overwrite_b=0) = <flapack function zpftrs>#
Solve a positive definite system in rectangular full packed (RFP) storage using a Cholesky factorization already computed by
pftrf(LAPACKzpftrs).- Parameters:
- nint
Order of the square matrix.
- andarray
Cholesky factorization in RFP storage, as returned by
pftrf.- bndarray
Right-hand side(s). It may have more than n rows; only the leading n are read.
- transrstr, optional
'N'for the normal RFP layout,'C'for the transposed one. Default is'N'.- uplostr, optional
'U'if a holds the upper triangle,'L'if lower. Default is'U'.- overwrite_bint, optional
If nonzero, b may be overwritten in place. Default is 0.
- Returns:
- xndarray
Solution of the system, overwriting b.
- infoint
0 on success; if negative, the
-info-th argument had an illegal value.