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gd_endianness(3) | GETDATA | gd_endianness(3) |
NAME¶
gd_endianness — report the byte sex of fields in a dirfileSYNOPSIS¶
#include <getdata.h>unsigned long gd_endianness(DIRFILE *dirfile, int fragment_index);
DESCRIPTION¶
The gd_endianness() function queries a dirfile(5) database specified by dirfile and returns the byte sex for the fragment indexed by fragment_index. The byte sex of a fragment indicate the endianness of data stored in binary files associated with RAW fields defined in the specified fragment. The endianness of a fragment containing no RAW fields is not meaningful.The dirfile argument must point to a valid DIRFILE object previously created by a call to gd_open(3).
RETURN VALUE¶
Upon successful completion, gd_endianness() returns the byte sex of the specified fragment, which will be either GD_BIG_ENDIAN or GD_LITTLE_ENDIAN, bitwise-or'd with either GD_ARM_ENDIAN or GD_NOT_ARM_ENDIAN, indicating whether double-precision floating point data in this fragment are stored in the old ARM middle-endian format. 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.
- GD_E_BAD_INDEX
- The supplied index was out of range.
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 ALSO¶
gd_alter_endianness(3), gd_getdata(3), gd_error(3), gd_error_string(3), gd_open(3), dirfile(5), dirfile-format(5)17 July 2010 | Version 0.7.0 |