Source code for hiphive.core.core_config

# This module contains the various variables used as tolerances and similar
# throughout the code in the core functionality.

[docs]class core_config:
[docs] class eigensymmetries: rotation_integer_tolerance = 1e-12 method = 'iterative' crystal_symmetries = True
[docs] class iterative: zero_tolerance = 1e-12 simplify = True simplify_tolerance = None method = 'symbolic'
'''This is the tolerance used when the rotation matrices and similar are tested if they are integers. ''' integer_tolerance = 1e-12 ''' For each symmetry, the constraint matrix can be reduced to square again. This can be done either by 'symbolic', 'numeric' or not at all (None). Default is None since the matrix is often small enough to fit in memory. 'symbolic', 'numeric', None ''' eigentensor_compress_mode = None '''If this is True, before every symbolic compression the values will be simplified by sympy, potentially turning them into exact rational or irrational numbers. This can be useful for systems with non-integer rotation matrices in cartesian coordinates e.g. hcp. The main purpose is to make the rref more stable against repeating rounding errors. True, False ''' eigentensor_simplify_before_compress = False ''' If non compress was used during construction but used before solving True, False ''' eigentensor_simplify_before_last_compress = False '''If the compress_mode is None the constraint matrix might be compressed right before the nullspace() solver 'numeric', 'symbolic', None ''' eigentensor_compress_before_solve = None '''This might make the nullspace() more stable True, False ''' eigentensor_simplify_before_solve = True ''' 'symbolic', 'numeric' ''' eigentensor_solve_mode = 'symbolic' ''' 'symbolic', 'numeric' ''' sum_rule_constraint_mode = 'symbolic' ''' True, False ''' sum_rule_constraint_simplify = True ''' True, False ''' constraint_vectors_simplify_before_compress = True ''' 'symbolic', 'numeric', None ''' constraint_vectors_compress_mode = 'symbolic' ''' True, False ''' constraint_vectors_simplify_before_solve = True ''' 'symbolic', 'numeric' ''' constraint_vectors_solve_mode = 'symbolic'