calc: Recursion Depth
4.11.2 Recursion Depth
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Calc uses recursion in many of its calculations. Emacs Lisp keeps a
variable ‘max-lisp-eval-depth’ which limits the amount of recursion
possible in an attempt to recover from program bugs. If a calculation
ever halts incorrectly with the message “Computation got stuck or ran
too long,” use the ‘M’ command (‘calc-more-recursion-depth’) to increase
this limit. (Of course, this will not help if the calculation really
did get stuck due to some problem inside Calc.)
The limit is always increased (multiplied) by a factor of two. There
is also an ‘I M’ (‘calc-less-recursion-depth’) command which decreases
this limit by a factor of two, down to a minimum value of 200. The
default value is 1000.
These commands also double or halve ‘max-specpdl-size’, another
internal Lisp recursion limit. The minimum value for this limit is 600.
Info Catalog
calc: Autoloading Problems
calc: Troubleshooting Commands
calc: Caches