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Conference rusure::math

Title:Mathematics at DEC
Moderator:RUSURE::EDP
Created:Mon Feb 03 1986
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:2083
Total number of notes:14613

80.0. "A math manual questionaire." by HARE::WIENER () Thu Jun 14 1984 13:46

Stan has asked me to include this math questionaire in this notes file. If
you know of any HEAVY math users/customers who wish to fill this out this
questionaire, feel free to give them a copy.









+---------------+

! d i g i t a l !    M A T H   M A N U A L   Q U E S T I O N A I R E

+---------------+





                                Date:  25 April 1984



                                From:  Jeffrey C. Wiener

                                       VAX-11 COMMON RUN TIME LIBRARY

                                       Digital Equipment Corporation

                                       110 Spitbrook Road

                                       ZK02-3/K06

                                       Nashua, New Hampshire 03062





     Thank you for agreeing to take part in  this  VAX-11  Common  Run

Time  Library  mathematics  manual  questionaire.   Digital  Equipment

Corporation would like to ascertain both the need for  such  a  manual

and,  if such a manual is desireable, its contents.  Digital Equipment

Corporation can not promise to produce a  math  manual  nor  can  they

promise   to  implement  any  of  the  suggestions  obtained  by  this

questionaire if such a manual is produced.









1.0 Are you familiar with any math manuals from other vendors?





      o  If yes, what is good about them?















      o  What is bad about them?




QUESTIONAIRE FOR VAX-11 RUN TIME LIBRARY MATH USERS.              Page 2







2.0 Organizational Information.



      o  How would you use such a book (Quick reference, etc)?







      o  How frequently would you use this book?







      o  How  would  you  like  the  material  arranged?   Should  the

         routines  be  presented in an alphabetic order or should they

         be grouped according to some schema?  Any suggestions  for  a

         schema that should be followed?















      o  Should all of the math routines be included?  That is, should

         functions such as DIM, SIGN, and PROD be included?













3.0 Is it sufficient for us to make a statement about the accuracy  of

each math routine or would you prefer some documentation.









      o  If documentation is desired, what form should it take?















      o  Have you considered which, if any, of the following you would

         like to see?



          -  An error analysis section for each routine that is  based

             only upon a mathematical analysis of the routine.


QUESTIONAIRE FOR VAX-11 RUN TIME LIBRARY MATH USERS.              Page 3







          -  An error analysis section for each routine that is  based

             only  upon  error  plots.   The error plots would contain

             MEAN, RMS, and MAXIMUM least significant bit errors.











          -  An error analysis section for each routine that is  based

             upon  both  a  mathematical  analysis  of the routine and

             error plots.











          -  None of the three (3) above are necessary.













      o  Would you be interested in seeing samples of the error  plots

         used  to  obtain/verify  the  error bounds?  The entire error

         plot or only the worst cases?











      o  Should a detailed error analysis be undertaken for each  data

         type (F, D, G, and H floating)?  Only some of the data types?















4.0 Would you be interested in performance information?













5.0 Any other suggestions?


QUESTIONAIRE FOR VAX-11 RUN TIME LIBRARY MATH USERS.              Page 4







6.0 If Digital were to produce such a manual, it would most likely  be

offered  for  separate  purchase  and  not  as  a  part  of  the  base

documentation set.  Would you  be  willing  to  purchase  this  manual

separately?











      o  Does this influence what you would want to see in  a  manual,

         since  the  more  material  that  is included, the higher the

         price.











      o  That is, what would you keep/omit?















Once again Digital Equipment Corporation would like to thank  you  for

taking the time to answer this questionaire.


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