[Pcb-bugs] [Bug 1017935] Re: Wrong coordinates in plated-drill.cnc with big size pcb

[DJ D. <10...@bu...>]

No, it just means we know what kind of bug to look for now ;-)

32-bit mode should handle boards up to about six feet across (1^31 nm).
You just have to be careful about the order in which you do math
operations, to avoid overflow in intermediate terms.

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https://bugs.launchpad.net/bugs/1017935

Title:
  Wrong coordinates in plated-drill.cnc with big size pcb

Status in PCB: Printed Circuit Board CAD package:
  New

Bug description:
  With bigger size pcb's coordinates wraps around 169093 and needs that
  number be added to that items manually.

  PCB version used: 20110918
  Mandriva 2011 and Mageia2.

  As an example a simple 4 pads pcb of size 23775.00 x 6000.00 exports
  this plated-drill.cnc file

  M48
  INCH
  T17C0.138
  %
  T17
  X003000Y057250
  X003000Y002750
  X065907Y002750
  X065907Y057250
  M30

  but this should be fixed as in the fallowing

  M48
  INCH
  T17C0.138
  %
  T17
  X003000Y057250
  X003000Y002750
  X235000Y002750
  X235000Y057250
  M30

  Real coordinates of holes are 23500.00, 275.00 and 23500.00, 5725.

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