gobject:value-uint64 (gvalue)

gvalue -- a g:value instance of "guint64" type
value -- an unsigned 64-bit integer

Unsigned 64-bit integer contents of gvalue. The g:value-uint64 function gets the contents of a g:value instance of "guint64" type. The (setf g:value-uint64) function sets the contents of a g:value instance to value.