Hi all, pqs_3_0_5 is now available in the "Physical Quantities Units" directory in the boost vault. pqs_3_0_5 hs been formally tested (including <libs/pqs/ test> and <libs/pqs/examples> ) on VC7.1, VC8, gcc3.2, gcc4.01. I hope to request a formal review of pqs shortly. All comments welcome The major change in pqs_3_0_5 is that first draft documentation has been added. Below is a copy of the index in the pqs_3_0_5 documentation. Introduction Acknowledgements Rationale Definition of terms t1_quantity - Quick overview of features and useage t1_quantity - Macros t1_quantity - Concepts t1_quantity - Class definition t1_quantity - Functions and operations t1_quantity - Associated types ** Predefined t1_quantities included in pqs Adding new predefined t1_quantities ** Configuring pqs ** ( **Section is are very incomplete in pqs_3_0_5) ToDo list for pqs_3_0_6----------- Ful quota of constants and constants documentation needs to be added. Code and documentation for angles need to be added. Should angles be in boost::math namespace ? A full inventory of pre-defined quantities as laid out in Appendix B.8 and B.9 of NIST Guide for the Use of the International System of Units(SI). pqs_3_0_5 has a (reasonably sized) sample selection of these but not all. Typeof registration needs to be sorted according to whatever is decided. regards Andy Little