sparse_solver_func – nlesolver-fortran

interface
private subroutine sparse_solver_func(me, n_cols, n_rows, n_nonzero, irow, icol, a, b, x, istat)

Type	Intent	Attributes		Name
class(nlesolver_type),	intent(inout)		::	me
integer,	intent(in)		::	n_cols	`n`: number of columns in A.
integer,	intent(in)		::	n_rows	`m`: number of rows in A.
integer,	intent(in)		::	n_nonzero	number of nonzero elements of A.
integer,	intent(in),	dimension(n_nonzero)	::	irow	sparsity pattern (size is `n_nonzero`)
integer,	intent(in),	dimension(n_nonzero)	::	icol	sparsity pattern (size is `n_nonzero`)
real(kind=wp),	intent(in),	dimension(n_nonzero)	::	a	matrix elements (size is `n_nonzero`)
real(kind=wp),	intent(in),	dimension(n_rows)	::	b	right hand side (size is `m`)
real(kind=wp),	intent(out),	dimension(n_cols)	::	x	solution (size is `n`)
integer,	intent(out)		::	istat	status code (=0 for success)

for a custom user-provided linear solver (sparse version) solve Ax = b for x, given A and b.