auto_diff → util Relation

File in include/num_collect/auto_diff	Includes file in include/num_collect/util
backward / create_diff_variable.h	assert.h
backward / differentiate.h	safe_cast.h
forward / create_diff_variable.h	assert.h
forward / make_jacobian.h	assert.h
backward / graph / node.h	assert.h
backward / graph / node_differentiator.h	assert.h