Query: gd_nvectors
OS: debian
Section: 3
Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar
gd_nvectors(3) GETDATA gd_nvectors(3)NAMEgd_nvectors -- report the number of vector fields in a dirfileSYNOPSIS#include <getdata.h> unsigned int gd_nvectors(DIRFILE *dirfile);DESCRIPTIONThe gd_nvectors() function queries a dirfile(5) database specified by dirfile and returns the number of vector fields defined in the data- base (i.e. fields of types BIT, LINCOM, LINTERP, MULTIPLY, PHASE, POLYNOM, RAW, SBIT). Notably, this count does not include /META fields. The dirfile argument must point to a valid DIRFILE object previously created by a call to gd_open(3).RETURN VALUEUpon successful completion, gd_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 gd_error(3). A descriptive error string for the last error encountered can be obtained from a call to gd_error_string(3).SEE ALSOdirfile(5), gd_open(3), gd_error(3), gd_error_string(3), gd_nfields(3), gd_nmvectors(3), gd_vector_list(3) Version 0.7.0 16 July 2010 gd_nvectors(3)