Argument Checking Functions

List of:	Discussion Topic
Subjects:	Extending ACIS, C++ Interface
Contents:	Application Development Manual

The API error checking functions that can be called are as follows:
check_array_exists					Error if NULL pointer to array
check_array_length					Error if zero length
check_body					Error if NULL pointer
check_coedge					Error if NULL pointer
check_delta					Error if NULL pointer
check_edge					Error if NULL pointer
check_entity					Error if NULL pointer
check_face					Error if NULL pointer
check_graph					Error if NULL pointer
check_plane					Error if NULL pointer
check_sheet					Error if NULL pointer
check_wire					Error if NULL pointer
check_non_neg_length					Error if length less than SPAresabs
check_non_zero_length					Error if absolute length less than SPAresabs
check_pos_length					Error if length less than SPAresabs
check_3sides					Check # of sides > 3
check_wire_body					Checks wire pointer not NULL and shell pointer NULL

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