Fixed bug reported by Phil Evans when creating a new event file from multiple input event files with different WCS values. If the sky X and Y columns were integers the new values were calculated as an INT after doing the transformation instead of a NINT causing a possible one pixel shift. Also did some optimization of the code. v4.74.
Update: Also found that the goodfwcs logical variable in EXTWCS was not being initialized which was causing the position recalculation not to occur in some circumstances. v4.75
Keywords: HEAsoft, extractor.
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