scipy.linalg.lapack.zposv

scipy.linalg.lapack.zposv(a, b, lower=0, overwrite_a=0, overwrite_b=0) = <flapack function zposv>

Solve a @ x = b for a positive definite a by Cholesky factorization (LAPACK zposv).

Parameters:

andarray

Symmetric or Hermitian positive definite matrix of shape (n, n).

bndarray

Right-hand side(s) of shape (n, nrhs).

lowerint, optional

If nonzero, the lower triangle of a is referenced and the factor is lower triangular; otherwise the upper. Default is 0.

overwrite_aint, optional

If nonzero, a may be overwritten in place. Default is 0.

overwrite_bint, optional

If nonzero, b may be overwritten in place. Default is 0.

Returns:

cndarray

Cholesky factor of a, in the selected triangle.

xndarray

Solution of the system.

infoint

0 on success; if negative, the -info-th argument had an illegal value; if positive, the leading minor of order info is not positive definite.