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Collection of Education
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SCIENCE
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GRAD.ZIP
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CHANGES.DOC
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1993-01-06
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RELEASES
August 1988
- First public release.
December 1990
- Add missing ACOS and ASIN.
- I-APL version.
- Improved documentation.
May 1991
- Bugs fixed (thanks to Edgar Soulié for finding these): In some
situations // was generated instead of **. Equals signs in FORMAT or
PARAMETER statements caused errors. Generate continuation lines on long
warning messages.
- Accept lower-case keywords. Previously IF and the C for comments had to
be in upper-case.
- Improved TAN derivative. Continuation character in variable list in
STSC version. Slightly more memory available under I-APL (by using
direct definitions).
- GRAD.DOC corrections/additions: Document restriction on re-assigning the
independent variables (in (a)). Use of lower-case in function and
variable names (see (f) and (h)). Comments on Fortran 66 vs Fortran 77
and on case sensitivity dropped (GRAD now well tested with F77). Warn
about possible name clashes when choosing the delimiter, and about
dimensioning any new arrays. Drop suggestion on fixing assignment
labels (worked for GO TO but not for DO loop labels).
- CHANGES.DOC added.
December 1992
- Version for IBM's APL2/PC (mostly changes in file I/O code).
Stand-alone GRAD.EXE file for PC's prepared with packaging facility of
APL2/PC. Documentation altered accordingly.