X-Stream Operator’s Manual
WM-OM-E Rev I 301
Integer
Integer in the range -32768 to + 32767
Long
Long integer in the range -2
31
to + 2
31
- 1
Single
Single precision real variable
String
String variable
And
Logical AND
Or
Logical OR
To make a bit-by-bit comparison, logical constructions can be used with variables, as in A and B, or
with tests such as If A > B Then . . .
Functions
These are mainly of the form C = F (A), where A is the argument, or input to the function.
Abs
Abs (A) calculates the absolute value of an integer or a real number, so the result
is always positive or zero. A can be any number in the range of the VB system.
Atn
Atn (A) calculates the angle of which A is the tangent. Because infinitely many
angles can have the same tangent, the output of Atn always lies in the range
minus π / 2 to plus π / 2. The input can be any positive or negative value in the
range of the VB system.
CDbl
CDbl (A) calculates a double precision real variable, equal to A.
CInt
Cint (A) calculates the integer value nearest to A, which can be any acceptable
VBS number. Cint (-7.4) = -7. Integers are signed 16-bit values in the range
-32767 to + 32767.
CLng
CLng (A) calculates the nearest long integer to the value A. Long integers are
signed 32-bit values in the approximate range -21.5 M to + 21.5 M.
Cos
Cos (A) calculates the cosine of any integer or real number, giving an output that
is never greater than plus one or less than minus one.
CSng
CSng (A) calculates a single precision real variable equal to A.
Exp
Exp (A) calculates the value of e
A
.
Int
Cint (A) calculates the integer value next below A, which can be any acceptable
VBS number. Int (-7.4) = -8.
Log
Log (A) calculates the natural logarithm (to base e), of any acceptable VBS
number greater than zero. A negative number or zero will create an error.
To calculate Log
10
(A), use Log
10
(A) = Log(A) / Log(10)
Mod
A Mod (B) calculates the modulus of A, which is the remainder after A has been
divided by B.
34 Mod 8 = 2. 34 Mod 55 = 0. -34 Mod 13 = -8. 21 Mod -8 = 5.
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