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| From: | gah4 <gah4@u.washington.edu> |
| Newsgroups: | comp.compilers |
| Date: | Thu, 30 Dec 2021 13:40:32 -0800 (PST) |
| Organization: | Compilers Central |
| References: | 21-12-003 21-12-017 21-12-022 |
| Injection-Info: | gal.iecc.com; posting-host="news.iecc.com:2001:470:1f07:1126:0:676f:7373:6970"; logging-data="12374"; mail-complaints-to="abuse@iecc.com" |
| Keywords: | parse, optimize, design, comment |
| Posted-Date: | 30 Dec 2021 18:40:38 EST |
| In-Reply-To: | 21-12-022 |
On Wednesday, December 29, 2021 at 7:28:33 PM UTC-8, gah4 wrote:
(snip, I wrote)
> This reminds me of learning associativity of exponentiation (**)
> in Fortran IV (I believe it isn't in the Fortran 66 standard) before I
> learned it in algebra class. I suspect that there are others I learned
> from programming before learning them in math class
(snip)
> [Fortran has always had ** exponentiation, starting with the original
> version in 1956. It always bound tighter than +-*/ but wasn't
> associative, A**B**C not allowed, -John]
It was, at least, in Fortran IV for IBM 360/370:
https://atariwiki.org/wiki/attach/Fortran/IBM_FORTRAN_IV-Language_1973.pdf
My 8th grade graduation present was the above manual, though maybe
one year earlier. I used to read IBM reference manuals like books,
from start to finish. By the end of summer, I had run many Fortran programs.
As well as I know it, IBM Fortran IV was the input to the 1966 standard,
but not all features were included. It might also be that extensions were
added later.
[I used Fortran H on Princeston's 360/91 in a summer job I had in
college in about 1973. -John]
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