The MATH_DU method will READWRITE lock channels on the left side of expressions and READONLY lock channels on the right side of expressions. Channels are unlocked before returning. Therefore, channels on the left side of an expression cannot be locked READONLY because the Math_DU attempt to lock the channel READWRITE will fail. Similarly, channels on the right side of an expression cannot be locked READWRITE because Math_DU's attempt to lock the channels READONLY will fail. If this is confusing, just make sure no channels used in the expression are locked before calling Math_DU.

public static void Math(
	CDB oDB1,
	int i2,
	CEXP oEXP3
)

Public Shared Sub Math ( 
	oDB1 As CDB,
	i2 As Integer,
	oEXP3 As CEXP
)

public:
static void Math(
	CDB^ oDB1, 
	int i2, 
	CEXP^ oEXP3
)

static member Math : 
        oDB1 : CDB * 
        i2 : int * 
        oEXP3 : CEXP -> unit