Get the type of a linear constraint

Bit encoded constraint type.

This function returns the type and status of the given constraint. The type may be extracted using the macro XPRM_GETCTYPE(c). The possible types are:

XPRM_CTYPE_UNCONS	unbounded constraint (a linear expression)
XPRM_CTYPE_GEQ	for ≥ constraint
XPRM_CTYPE_LEQ	for ≤ constraint
XPRM_CTYPE_EQ	for = constraint
XPRM_CTYPE_SOS1	for is_sos1
XPRM_CTYPE_SOS2	for is_sos2
XPRM_CTYPE_CONT	for is_continuous
XPRM_CTYPE_INT	for is_integer
XPRM_CTYPE_BIN	for is_binary
XPRM_CTYPE_PINT	for is_partint
XPRM_CTYPE_SEC	for is_semcont
XPRM_CTYPE_SINT	for is_semint
XPRM_CTYPE_FREE	for is_free

The status of the constraint is checked using the macro XPRM_CHKCSTAT(c,s) where s is one of:

XPRM_CSTAT_EMPTY	the constraint is empty (it may contain a constant term)
XPRM_CSTAT_HIDN	the constraint is hidden
XPRM_CSTAT_TEMP	the constraint is temporary (it will be dropped after the termination of the calling function)