NAME
is_relative_filename – Returns TRUE if the filename is relative. Allegro game programming library.
SYNOPSIS
#include <allegro.h>
int is_relative_filename(const char *filename);
DESCRIPTION
Returns TRUE if the filename is relative or FALSE if it is absolute. Note that an absolute filename under DOS (with a device separator) will be considered as relative under Unix, because there absolute paths always start with a slash.
SEE ALSO
make_absolute_filename(3), make_relative_filename(3)