Pow(0,0) = 1

[matalog]

Is there any way to avoid the likes of

Code: Select all

For y=0 To 7 ; lvp=lvp+Pow(Bool(Point(x,y+h)>#Black)*2,(7-y)) ; Next

Returning 1 when both parts of the Pow() are zero?

[Mindphazer]

Looks like it's by convention :
https://en.wikipedia.org/wiki/Zero_to_t ... 0undefined.

[matalog]

Yeah, I was using it badly, this works:

Code: Select all

  For y=0 To 7
    lvp=lvp+Pow(2,(7-y))*Bool(Point(x,y+h)>#Black)
  Next

[NicTheQuick]

Better use the shift operator instead of Pow() if the base is 2 and your exponent an integer:

Code: Select all

Debug Pow(2, 14)
Debug 1 << 14

Pow() is using floats which is slower than a simple shift operation.

[matalog]

Better use the shift operator instead of Pow() if the base is 2 and your exponent an integer:

Code: Select all

Debug Pow(2, 14)
Debug 1 << 14

Pow() is using floats which is slower than a simple shift operation.

Great, thanks.