4 ms·
you buried the lede in the lead, where it links: See also LISP 1.5 https://texdraft.github.io/lisp-1.5/listing.html https://texdraft.github.io/lisp-1.5/listin
by fsckboy 2y ago
you buried the lede in the lead, where it links:
See also LISP 1.5
https://texdraft.github.io/lisp-1.5/listing.html https://texdraft.github.io/lisp-1.5/listing.html
finally! being able to take the actual CAR and CDR!
- aap_ 2y agoCAR here and CDR just below: https://texdraft.github.io/lisp-1.5/listing.html#line-7626 https://texdraft.github.io/lisp-1.5/listing.html#line-7626
- fsckboy 2y agothanks for finding that, i love it!
- nyrikki 2y agoFor those not familiar with these old IBM machines that used decrementing of the index registers, this will help explain all the ??D instructions are there. https://bitsavers.org/pdf/ibm/704/24-6661-2_704_Manual_1955.pdf https://bitsavers.org/pdf/ibm/704/24-6661-2_704_Manual_1955.... Another lens for the FORTRAN case specifically, in the modern way we tend to say Fortran arrays are 'one' indexed, looking at this old code it is sometimes useful of thinking of it as a limit index, pulling from n-1 -> n. Or at least I found that useful for myself when digging into some of this a long time ago.