SYNOPSIS

          bson_subtype_t
          bson_iter_binary_subtype (const bson_iter_t *iter);

PARAMETERS

       • iter: A bson_iter_t <>.

DESCRIPTION

       This  function  shall return the subtype of a BSON_TYPE_BINARY element. It is a programming error to call
       this function  on  a  field  that  is  not  of  type  BSON_TYPE_BINARY.  You  can  check  this  with  the
       BSON_ITER_HOLDS_BINARY() macro or bson_iter_type() <>.

       Equivalent to the subtype output parameter of bson_iter_binary() <>.

Author

       MongoDB, Inc

Copyright

       2009-present, MongoDB, Inc.

2.2.0                                             Nov 26, 2025                       BSON_ITER_BINARY_SUBTYPE(3)