Programming instructions

Intermec Fingerprint v7.61 – Programmer’s Reference Manual Ed. 760
Chapter 2 Program Instructions
DATEDIFF
Field of Application Function returning the difference between two dates as a number
of days.
Syntax DATEDIFF(<sexp
1
>,<sexp
2
>)
<sexp
1
> is one of two dates (date 1).
<sexp
2
> is the other of two dates (date 2).
Remarks
To get the result as a positive numeric value, the two dates, for which
the difference is to be calculated, should be entered with the earlier of
the dates (date 1) fi rst and the later of the dates (date 2) last, see the
fi rst example below.
If the later date (date 2) is entered fi rst, the resulting value will be negative,
see the second example below.
Both dates should be entered according to the syntax for the DATE$ variable,
that is in the order YYMMDD, where:
YY = Year Last two digits (for example 2000 = 00)
MM = Month Two digits (01-12)
DD = Day Two digits (01-28|29|30|31)
Example: December 1, 2000 is entered as "001201".
The built-in calendar corrects illegal values for the years 1980-2048, for
example the illegal date 001232 will be corrected to 010101.
Examples Calculation of the difference in days between the dates October 1, 2000
and November 30, 2000:
10 A%=DATEDIFF("001001","001130")
20 PRINT A%
RUN
yields:
60
If the later date is entered fi rst, the result will be negative:
10 A%=DATEDIFF("001130","001001")
20 PRINT A%
RUN
yields:
-60