4 ms·
CAR 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
by aap_ 2y ago
CAR 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.