Subtract$

Floating point calculation function.

The Subtract$ function subtracts two strings representing floating point numbers.

Usage

As only integers are supported numbers in WinTask, calculation on floating point numbers is done using their string representation.

Syntax

res$=Subtract$(a$,b$[,rc])

Parameters

a$, b$ are the strings representing the two floating numbers to subtract.

rc, optional numeric return code.
Values are :
0 if the operation was successful
1 invalid operation because parameters are incorrect (for instance, the string can't be considered as a number)
2 if the operation causes an overflow

Return value

res$, string representing a$ - b$.

See also

#Precision

Examples

 

Subtract$("13.56","145.789") 'gives "-132.23"

Subtract$("-45.678","34.8976") 'gives "-80.58"

 

#Precision=3

Subtract$("567.34257","45.343") 'gives "522.000"