SIMION®
The field and particle trajectory simulator
Industry standard charged particle optics software
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SIMION 8.0 Issues/Bugs/Enhancements

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Issue I514 [programming,70,defect,resolved]
  Random number generator seed() function freezes when not preceded by rand()
  call.

  Prior to 8.0.5-TEST27, the seed() function generally froze when passed a
  non-zero value if not preceded by a rand() call.  (It crashed in 7.0, at
  least when an active.tbl file was defined.) The seed() call, unlike the
  rand(), call, was not initializing the random number generator.  This is now
  corrected in 8.0.5-TEST27.

  This is not currently corrected in 7.0 (a workaround is to call rand prior
  to seed).

  Affects 7.0.0-8.0.5-TEST26.  Resolved in 8.0.5-TEST27.

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