Real
PowerScript function
Description
Converts a string value to a real datatype or obtains a real value
that is stored in a blob.
Syntax
|
1 |
Real ( stringorblob ) |
|
Argument |
Description |
|---|---|
|
stringorblob |
The string whose value you want returned as a real value |
Return value
Real. Returns the value of stringorblob as a real. If stringorblob
is not a valid PowerScript number or is an incompatible datatype, Real
returns 0. If stringorblob is null, Real returns null.
Examples
This statement returns 24 as a real:
|
1 |
Real("24") |
This statement returns the contents of the SingleLineEdit sle_Temp
as a real:
|
1 |
Real(sle_Temp.Text) |
The following example, although of no practical value, illustrates
how to assign real values to a blob and how to use Real to extract those
values. The two BlobEdit statements store two real values in the blob, one
after the other. In the statements that use Real to extract the values,
you have to know where the beginning of each real value is. Specifying the
correct length in BlobMid is not important because the Real function knows
how many bytes to evaluate:
|
1 2 3 4 5 6 7 8 9 10 11 12 |
blob{20} lb_blob real r1, r2 integer len1, len2 len1 = BlobEdit(lb_blob, 1, 32750E0) len2 = BlobEdit(lb_blob, len1, 43750E0) // Extract the real value at the beginning and // ignore the rest of the blob r1 = Real(lb_blob) // Extract the second real value stored in the blob r2 = Real(BlobMid(lb_blob, len1, len2 - len1)) |
See also
Double
Real method for DataWindows in the section called “Real” in DataWindow Reference.