BcdSub

Method
Subtracts one BCD number from another BCD number.

Category
BCD

 

Syntax
Function BcdSub(ByVal hDstBcd As Long, ByVal hSrcBcd As Long) As Long

hDstBcd
The handle to the destination BCD number.

hSrcBcd
The handle to the source BCD number.

 

Example

hBCD = CF1.AllocBcd

  hBCD2 = CF1.AllocBcd

  tmpLong = 6

  tmpLong2 = 3

  CF1.LongToBcd tmpLong, hBCD

  CF1.LongToBcd tmpLong2, hBCD2

  tmpVar = CF1.BcdSub(hBCD, hBCD2)

  tmpVar2 = CF1.BcdToLong(hBCD)

  If VarType(tmpVar) = vbLong And CLng(tmpVar2) = tmpLong - tmpLong2 Then

  logWr "BcdSub OK"

  Else

  logWr "BcdSub failed"

  End If

  CF1.FreeBcd hBCD

  CF1.FreeBcd hBCD2

 

Comments
BcdSub subtracts the BCD number hSrcBcd from the BCD number hDstBcd, and places the result in the BCD number hDstBcd.

For convenience, the function also returns a handle to the BCD number hDstBcd. This is useful in situations where the result is used to call yet another function, as in the following example:

h = BcdSub(BcdSub(dst, src),src1)

h and dst are now the same handle, and that handle refers to a BCD number with the value: (dst - src) - src1.



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