Error in 3.0ms

Runtime

Time bar (total: 3.0ms)Debug logProfile

Please include this information when filing a bug report:

herbie shell --seed 2018254 +o rules:numerics
(FPCore (wj x)
  :name "Jmat.Real.lambertw, newton loop step"

  :herbie-target
  (- wj (- (/ wj (+ wj 1)) (/ x (+ (exp wj) (* wj (exp wj))))))

  (- wj (/ (- (* wj (exp wj)) x) (+ (exp wj) (* wj (exp wj))))))

Backtrace

lambda: unbound identifier; also, no #%app syntax transformer is bound at: lambda in: (lambda (wj x) (#<procedure:ival-sub> (mk-ival wj) (#<procedure:ival-div> (#<procedure:ival-sub> (#<procedure:ival-mult> (mk-ival wj) (#<procedure:ival-exp> (mk-ival wj))) (mk-ival x)) (#<procedure:ival-add> (#<procedure:ival-exp> (mk-ival wj)) (#<proce...LC
raise-syntax-errorunknown
expand-capturing-liftsunknown
expand-singleunknown
temp74_0unknown
compile16unknown
temp68_2unknown
make-exacts/data/pavpan/nightlies/herbie/biginterval-sampler/src/points.rkt1380
loop/data/pavpan/nightlies/herbie/biginterval-sampler/src/points.rkt1722
setup-prog!32/data/pavpan/nightlies/herbie/biginterval-sampler/src/mainloop.rkt630
run-improve39/data/pavpan/nightlies/herbie/biginterval-sampler/src/mainloop.rkt2860
(unnamed)/home/p92/racket/collects/racket/private/more-scheme.rkt26128
run/home/p92/racket/share/pkgs/profile-lib/main.rkt392
profile-thunk16/home/p92/racket/share/pkgs/profile-lib/main.rkt90
(unnamed)/home/p92/racket/collects/racket/private/more-scheme.rkt26128