EXC/ x<>Rn for stack efficiency

[rprosperi]

(06-16-2017 06:59 PM)Dieter Wrote:  It's a real flashback to the early times of programmable calculators. A program for solving linear equations with two unknowns that flashes "SOS" (i.e. 505) when the determinant is zero, a quadratic solver where the program works slightly different from what the instructions say, prompting for input data by displaying "1", "2" and "3", the choice of simplified algorithms that fit into merely 100 unmerged steps... those were the days. ;-)

The thing about nostalgia is we always remember things better or worse than they really were. It's just hard to tell which applies here...