compares two determinants specified by determinant path left_det(1:Nopen) right_det(1:Nopen) and occupation left_occ(:) and right_occ(:), respectively. only_left(1:M) and only_right(1:M) returns the orbital indices of electrons that are only present in left and right determinant only_left_spin(1:M) and only_right_spin(1:M) the respective spin of the electrons coef_sign returns the sign produced by flips to bring the determinants into best congruence. The array length M can be arbitrarily. When the number of electrons only present in one determinant exceeds M comparison is quit and coef_sign=0 is returned
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| integer, | intent(out) | :: | coef_sign | |||
| integer, | intent(out) | :: | only_left(:) | |||
| integer, | intent(out) | :: | only_left_spin(:) | |||
| integer, | intent(out) | :: | only_right(:) | |||
| integer, | intent(out) | :: | only_right_spin(:) | |||
| integer, | intent(in) | :: | left_occ(:) | |||
| integer, | intent(in) | :: | left_det(:) | |||
| integer, | intent(in) | :: | right_occ(:) | |||
| integer, | intent(in) | :: | right_det(:) |