21 Mar
2007
21 Mar
'07
3:09 p.m.
Roger Holmes wrote:
Probably later version of Fortran were better, but
version 4 was just
so restrictive, after using Algol's For..Step..Until..Do.. with
expressions, I could not really go back to Fortran IV's for statements
with single, simple unsigned integer constants for the start, end and
step values.
But then a ISZ style loop seems to map to Fortran better.
Algol loops seem to imply a AC style testing. Also Algol
seems to require some sort of index register, something
many machines do not have.Algol for the PDP-8 gets around
this as you can not comnile subroutines.
Roger.