[racket] Non threadsafe Fortran library (ARPACK) vs Racket 5.3.3

From: Danny Yoo (dyoo at hashcollision.org)
Date: Tue Apr 2 14:49:22 EDT 2013

#:in-original-place? should do the trick, as it's what the pango
bindings do as well:


You probably don't need #:atomic?.  #:atomic? has to do with callbacks
from foreign code back into Racket.

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