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cc65/libsrc/common/ftell.c
cuz 6966ccda7e Fixed the return code of fgetpos and ftell.
Made lots of functions __fastcall__.


git-svn-id: svn://svn.cc65.org/cc65/trunk@2615 b7a2c559-68d2-44c3-8de9-860c34a00d81
2003-11-06 18:04:07 +00:00

36 lines
649 B
C

/*
* ftell.c
*
* Christian Groessler, 07-Aug-2000
*/
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include "_file.h"
/*****************************************************************************/
/* Code */
/*****************************************************************************/
long __fastcall__ ftell (FILE* f)
{
long pos;
/* Is the file open? */
if ((f->f_flags & _FOPEN) == 0) {
_errno = EINVAL; /* File not open */
return -1L;
}
pos = lseek(f->f_fd, 0L, SEEK_CUR);
return pos; /* -1 for error, comes from lseek() */
}