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/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
*/
#define import_spp
#define import_libc
#define import_xnames
#include <iraf.h>
/* C_FNEXTN -- Extract the filename extension substring from a filename.
*/
int
c_fnextn (
char *vfn, /* filename */
char *extn, /* filename extension (output) */
int maxch /* max chars out */
)
{
XCHAR spp_extn[SZ_FNAME+1];
XINT x_maxch = SZ_FNAME, nchars;
nchars = (int) FNEXTN (c_sppstr(vfn), spp_extn, &x_maxch);
c_strpak (spp_extn, extn, maxch);
return (nchars);
}
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