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- README July 15, 1991
-
- INSTALLING EPI INFO, VERSION 5.01b
-
- (This material also appears in the primary README file. It is duplicated
- here for the use of those receiving a partial disk set in upgrade from
- 5.01a to 5.01b.)
-
- If you are upgrading Version 5.01a to Version 5.01b, only the
- ENTER and ANALYSIS programs need to be installed. In the standard,
- four-disk distribution system, they are on the second disk. Install
- these programs as usual and allow them to overwrite those for Version
- 5.01b. Note that ENTER is located on the second disk in Version 5.01b
- but on the first disk in Version 5.01a.
-
- WHAT'S NEW IN EPI INFO, VERSION 5.01b?
-
- Version 5.01b incorporates the following changes, in addition to the
- features of Version 5.01a:
-
- *ANALYSIS (dated 7-15-91) has 3 new operators:
-
- TRUNC(x) produces the value of x with any fractional portion
- truncated.
-
- FRAC(x) produces the fractional portion of x.
-
- ROUND(x) produces the value of x rounded to the nearest whole
- number. (Rounding is away from 0 in case of ties: 1.5 is rounded
- to 2.0, but -1.5 is rounded to -2.0.) Legal values for rounded x
- are in the range -2,147,483,648 to +2,147,483,647. For x outside
- that range, ROUND(x) produces the unrounded value of x.
-
- *ANALYSIS' DIV operator has been limited to numbers in the range of
- approximately -214,748 to +214,748. Attempts to use larger numbers, and
- DIV operations which result in errors, are signaled as errors. In case
- of error, the value produced is -10E6. (X DIV Y is considered to result
- in an error if ((X / Y) - (X DIV Y) - FRAC(X / Y) > 10E-300).)
-
- *A problem with display of deleted records in ENTER has been corrected.
- This problem occurred only with records with length of exact multiples
- of 78 bytes.
-
- We are happy to note that most of the "bugs" reported by helpful users
- were of the type only noticed in specialized applications by a few
- users, and some only became evident on particular types of computers.
- Please continue to report difficulties to the Epi Info User Hotline
- (404)-728-0545, so that future versions can be even more useful.
- Suggestions for future enhancements should be directed to Andrew G.
- Dean, M.D., DSE, EPO, Mailstop G34, Centers for Disease Control,
- Atlanta, GA 30333, telephone (404) 639-3048, FAX (404) 639-2408.
-
-