Yokogawa PC-Based MX100 - Manual (Page 266)

5-8
IM MX190-01E
compareDataNoMX
Syntax
int compareDataNoMX(MXDataNo * prevDataNo, MXDataNo *
nextDataNo);
Declaration
Public Declare Function compareDataNoMX Lib "DAQMX"(ByRef
prevDataNo As MXDataNo, ByRef nextDataNo As MXDataNo) As Long
Parameters
prevDataNo Specify the data number (previous).
nextDataNo Specify the data number (next).
Description
Compares the specified data numbers.
• The data number is 64 bits while the return value is 32 bits. Therefore, the
returned value is not the difference between the two.
• In the case of Visual C, if NULL is specified for a parameter, an indefinite value is
returned.
Return value
Returns 0 if the data numbers are the same.
Returns a positive number if the data number (previous) is less than the data
number (next).
Returns a negative number if the data number (previous) is greater than the data
number (next).
5.1 Details of Functions - MX100 (Visual C/Visual Basic) -