=================================================================== RCS file: /home/cvs/OpenXM/doc/issac2000/data-format.tex,v retrieving revision 1.2 retrieving revision 1.5 diff -u -p -r1.2 -r1.5 --- OpenXM/doc/issac2000/data-format.tex 2000/01/02 07:32:11 1.2 +++ OpenXM/doc/issac2000/data-format.tex 2000/01/13 10:58:16 1.5 @@ -1,11 +1,11 @@ -% $OpenXM: OpenXM/doc/issac2000/data-format.tex,v 1.1 1999/12/23 10:25:08 takayama Exp $ +% $OpenXM: OpenXM/doc/issac2000/data-format.tex,v 1.4 2000/01/11 05:35:48 noro Exp $ \section{Data Format} (Ohara) -OpenXM admits multiple math encodings such as OpenMath, MP, CMO +OpenXM admits multiple mathematical encodings such as OpenMath, MP, CMO (Common Mathematical Object format). OpenXM itself does not exhibit a bias towards a particular encodings -as a main math data carrier and OpenXM compliant system do not need to +as a main mathematical data carrier and an OpenXM compliant system do not need to implement all possible data formats. A server or a client does not necessarily implement full specifications of OpenXM. @@ -13,25 +13,29 @@ However, if a program sends an OX data or an OX comman an unrecoverable error may occur. To avoid such a case OpenXM provides a scheme not to send an OX message unknown to peers. -It is realized by exchanging the list of +It is realized by exchanging a list of supported CMO's, OpenXM stack machine codes, and necessary extra informations. -The list is called mathcap. -Mathcap is also defined as a CMO and the elements are 32bit integers -or strings. +The list is called {\it mathcap}. +% Mathcap is also defined as a CMO and its elements are 32bit integers +% or strings. +Mathcap is also defined as a CMO and the CMO has a structure of a nest +of lists. its leafs of the end are also a CMO which tags with +CMO\_INT32 or CMO\_STRING. -Math encoding types of OX data are distinguished with tags +Mathematical encoding types of OX data are distinguished with tags of OX messages. For example, an OX message with the tag -OX\_DATA is followed by CMO packet. +OX\_DATA is followed by a CMO packet. An OX message with the tag OX\_DATA\_OPENMATH\_XML is followed by -OpenMath XML string and its length. -All OpenXM compliant systems should implement 7 primitive data types -of CMO. +an OpenMath XML string and its length. + +All OpenXM compliant systems should implement seven primitive data types +of the CMO. These are used not only to express mathematical objects, but also -indespensable to carry control informations such as mathcap. -CMO is an original methematical data encoding system of the OpenXM project. +indispensable to carry control informations such as mathcap. +CMO is an original mathematical data encoding system of the OpenXM project. Let us explain the data format of CMO. Any CMO packet consists of a header and a body. The size of the header is 4 bytes that tags the data type of the body. @@ -46,6 +50,7 @@ Following tags are registered in the OpenXM for now. #define CMO_STRING 4 #define CMO_MATHCAP 5 #define CMO_LIST 17 + #define CMO_MONOMIAL32 19 #define CMO_ZZ 20 #define CMO_QQ 21 @@ -70,58 +75,54 @@ Following tags are registered in the OpenXM for now. #define CMO_LAMBDA 62 \end{verbatim} The first seven types should be implemented on all OpenXM compliant systems. -The format of the first severn CMO's are as follows. \\ +The format of the first seven CMO's are as follows. \\ \begin{tabular}{|c|c|} \hline -{\tt int32 CMO\_ERROR2} & {\sl CMObject} {\rm ob} \\ +{\sl int32} {\tt CMO\_ERROR2} & {\sl CMObject} {\rm ob} \\ \hline \end{tabular} \\ \begin{tabular}{|c|c|} \hline -{\tt int32 CMO\_NULL} \\ +{\sl int32} {\tt CMO\_NULL} \\ \hline \end{tabular} \\ \begin{tabular}{|c|c|} \hline -{\tt int32 CMO\_INT32}& {\tt int32} {\rm n} \\ +{\sl int32} {\tt CMO\_INT32}& {\sl int32} {\rm n} \\ \hline \end{tabular} \\ \begin{tabular}{|c|c|c|} \hline -{\tt int32 CMO\_DATUM}& {\tt int32} {\rm n} & {\tt byte} {\rm data[0]} \\ +{\sl int32} {\tt CMO\_DATUM}& {\sl int32} {\rm n} & {\sl byte} {\rm data[0]} \\ \hline -$\cdots$ & {\tt byte} {\rm data[n-1]} \\ +$\cdots$ & {\sl byte} {\rm data[n-1]} \\ \cline{1-2} \end{tabular} \\ \begin{tabular}{|c|c|c|} \hline -{\tt int32 CMO\_STRING}& {\tt int32} {\rm n} & {\tt byte} {\rm data[0]} \\ +{\sl int32} {\tt CMO\_STRING}& {\sl int32} {\rm n} & {\sl byte} {\rm data[0]} \\ \hline -$\cdots$ & {\tt byte} {\rm data[n-1]} \\ +$\cdots$ & {\sl byte} {\rm data[n-1]} \\ \cline{1-2} \end{tabular} \\ \begin{tabular}{|c|c|} \hline -{\tt int32 CMO\_MATHCAP} & {\it CMObject} {\rm ob} \\ +{\sl int32} {\tt CMO\_MATHCAP} & {\sl CMObject} {\rm ob} \\ \hline \end{tabular} \\ \begin{tabular}{|c|c|c|} \hline -{\tt int32 CMO\_LIST}& {\tt int32} {\rm n} & {\tt CMObject} {\rm ob[0]} \\ +{\sl int32} {\tt CMO\_LIST}& {\sl int32} {\rm n} & {\sl CMObject} {\rm ob[0]} \\ \hline -$\cdots$ & {\tt CMObject} {\rm ob[n-1]} \\ +$\cdots$ & {\sl CMObject} {\rm ob[n-1]} \\ \cline{1-2} \end{tabular} \\ - -A mathematical programmer who wants to implement CMO on a server proceed +A mathematical programmer who wants to implement CMO on a server proceeds as follows. \begin{enumerate} \item Look for the CMO list at the web cite \cite{openxm-web}. -If there is a CMO tht fits to her or his requirement, then use this CMO. +If there is a CMO that fits to her or his requirement, then use this CMO. \item If there is no suitable CMO, design a new CMO and register the new CMO to \cite{openxm-web} with a description and examples. \end{enumerate} - - -