get_nvectors (3) Linux Manual Page
get_nvectors — report the number of vector fields in a dirfile
Synopsis
#include <getdata.h>- unsigned int get_nvectors(DIRFILE *dirfile);
Description
The dirfile argument must point to a valid DIRFILE object previously created by a call to dirfile_open(3).
Return Value
Upon successful completion, get_nvectors() returns the number of vector fields in the dirfile. On error, it returns zero and sets the dirfile error to a non-zero error value. Possible error values are:- GD_E_BAD_DIRFILE
- The supplied dirfile was invalid. The dirfile error may be retrieved by calling get_error(3). A descriptive error string for the last error encountered can be obtained from a call to get_error_string(3).