Robert Dodier - 2009-07-26

Looks like TAYLOR2 calls TSDIFF which calls TAYLOR2 ... Here are the frames at the bottom of the stack.

43576: (TAYLOR2 ((%DERIVATIVE SIMP) (($F SIMP) $X $Y) $X 1 $Y 1))
43577: (TSDIFF
(($F SIMP) $X $Y)
($X 1 $Y 1)
((%DERIVATIVE SIMP) (($F SIMP) $X $Y) $X 1 $Y 1))
43578: (TAYLOR2 ((%DERIVATIVE SIMP) (($F SIMP) $X $Y) $X 1 $Y 1))
43579: (TSDIFF
(($F SIMP) $X $Y)
($X 1 $Y 1)
((%DERIVATIVE SIMP) (($F SIMP) $X $Y) $X 1 $Y 1))
43580: (TAYLOR2 ((%DERIVATIVE SIMP) (($F SIMP) $X $Y) $X 1 $Y 1))
43581: (TAYLOR3 ((%DERIVATIVE SIMP) (($F SIMP) $X $Y) $X 1 $Y 1))
43582: (TAYLOR1
((%DERIVATIVE SIMP) (($F SIMP) $X $Y) $X 1 $Y 1)
((($X ((1 . 1)) 0 NIL))))
43583: (TAYLOR* ((%DERIVATIVE SIMP) (($F SIMP) $X $Y) $X 1 $Y 1) ($X 0 1))
43584: ($TAYLOR ((%DERIVATIVE SIMP) (($F SIMP) $X $Y) $X 1 $Y 1) $X 0 1)
43585: (MEVAL1 #<unavailable argument>)
43586: (MEVAL (($TAYLOR) (($DIFF) (($F) $X $Y) $X 1 $Y 1) $X 0 1))
43587: (MEVAL* (($TAYLOR) (($DIFF) (($F) $X $Y) $X 1 $Y 1) $X 0 1))
43588: (TOPLEVEL-MACSYMA-EVAL
(($TAYLOR) (($DIFF) (($F) $X $Y) $X 1 $Y 1) $X 0 1))
43589: (CONTINUE #<SYNONYM-STREAM :SYMBOL SB-SYS:*STDIN* {9136819}> NIL)
43590: (MACSYMA-TOP-LEVEL
#<SYNONYM-STREAM :SYMBOL SB-SYS:*STDIN* {9136819}>
NIL)
43591: (RUN)
43592: (SB-INT:SIMPLE-EVAL-IN-LEXENV (RUN) #<NULL-LEXENV>)
43593: (SB-IMPL::PROCESS-EVAL-OPTIONS ("(cl-user::run)"))
43594: (SB-IMPL::TOPLEVEL-INIT)
43595: ((LABELS SB-IMPL::RESTART-LISP))