DFDL WG agreed with all proposed changes. http://redmine.ogf.org/issues/248 Regards Steve Hanson Architect, IBM DFDL Co-Chair, OGF DFDL Working Group IBM SWG, Hursley, UK smh@uk.ibm.com tel:+44-1962-815848 From: Steve Hanson/UK/IBM To: DFDL-WG <dfdl-wg@ogf.org> Date: 04/12/2014 12:02 Subject: 13.7.1.1 Converting Base-2 Binary Numbers (updated) Converting Base-2 Binary Numbers For both parsing and unparsing, the bit string that represents the content region for a base-2 binary number is converted to/from an Infoset value by a calculation that involves the length and the dfdl:byteOrder property. For unparsing, the dfdl:fillByte property can also be involved. When parsing, DFDL specifies how an unsigned integer of unbounded magnitude is computed from a bit string based on its length, and the dfdl:byteOrder property. For signed types, this unbounded integer is converted into a signed value by way of the well-known twos-complement scheme, and for the xs:decimal type, the dfdl:binaryDecimalVirtualPoint property can be used to convert this integer into a decimal value with an integer and a fractional component, and for both xs:decimal and the integer types the dfdl:binaryVirtualDecimalPoint or to scale up the integer by some scale factor. 1) Why is the fill byte involved here? We are creating a two's complement value of a particular length. There is no filling going on. 2) Should this now also mention dfdl:bitOrder? 3) BDVP is only used for xs:decimal so the final clause of the last paragraph should not include integer types. Regards Steve Hanson Architect, IBM DFDL Co-Chair, OGF DFDL Working Group IBM SWG, Hursley, UK smh@uk.ibm.com tel:+44-1962-815848 Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU