Re: Single/Double precision NA values

[John W. Eaton]

On 29-Jul-2008, dbateman wrote:

| 
| 
| 
| John W. Eaton wrote:
| > 
| > On 29-Jul-2008, David Bateman wrote:
| > 
| > | My current patch translates the old NA values to the new internal 
| > | representation when reading files, though I can't remember if fread does 
| > | it as well. However the code writes the new NA values to the files.
| > 
| > It doesn't.  I looked, but I don't see a convenient place to insert
| > the conversion.
| > 
| > I've applied the patch anyway, as it seems useful to have both
| > NA ("single") and single (NA) work correctly.
| > 
| > 
| 
| Ok, then I'll try and supply a patch for fread as well later.

Doing that seemed tricky to me because fread is currently implemented
using some template functions and it must handle floating point format
conversions.  It wasn't clear to me where the NA conversion should go.

jwe