Exception for 2cbrt (problem 3.3.4)

Specification

\[x > 1 \land x < 10^{+308}\]

Math

\[\begin{array}{l} \\ \sqrt[3]{x + 1} - \sqrt[3]{x} \end{array} \]

FPCore

(FPCore (x) :precision binary64 (- (cbrt (+ x 1.0)) (cbrt x)))

C

double code(double x) {
	return cbrt((x + 1.0)) - cbrt(x);
}

Java

public static double code(double x) {
	return Math.cbrt((x + 1.0)) - Math.cbrt(x);
}

Julia

function code(x)
	return Float64(cbrt(Float64(x + 1.0)) - cbrt(x))
end

Wolfram

code[x_] := N[(N[Power[N[(x + 1.0), $MachinePrecision], 1/3], $MachinePrecision] - N[Power[x, 1/3], $MachinePrecision]), $MachinePrecision]

Reproduce

herbie shell --seed 2025030 
(FPCore (x)
  :name "2cbrt (problem 3.3.4)"
  :precision binary64
  :pre (and (> x 1.0) (< x 1e+308))

  :alt
  (! :herbie-platform default (/ 1 (+ (* (cbrt (+ x 1)) (cbrt (+ x 1))) (* (cbrt x) (cbrt (+ x 1))) (* (cbrt x) (cbrt x)))))

  (- (cbrt (+ x 1.0)) (cbrt x)))

Please file a bug report with this information.

Backtrace

operator-info: Unknown operator binary64		L	C
(unnamed)	/usr/share/racket/collects/racket/contract/private/arrow-higher-order.rkt	379	33
enode-type	/home/nightlies/herbie/really-crazy-encodings/src/core/egg-herbie.rkt	566	0
split-untyped-eclasses	/home/nightlies/herbie/really-crazy-encodings/src/core/egg-herbie.rkt	621	0
make-typed-eclasses	/home/nightlies/herbie/really-crazy-encodings/src/core/egg-herbie.rkt	791	0
make-regraph	/home/nightlies/herbie/really-crazy-encodings/src/core/egg-herbie.rkt	838	0
egraph-best	/home/nightlies/herbie/really-crazy-encodings/src/core/egg-herbie.rkt	1395	0
simplify-batch	/home/nightlies/herbie/really-crazy-encodings/src/core/simplify.rkt	19	0
(unnamed)	/usr/share/racket/collects/racket/contract/private/arrow-val-first.rkt	486	18
initial-simplify	/home/nightlies/herbie/really-crazy-encodings/src/core/preprocess.rkt	54	0
find-preprocessing	/home/nightlies/herbie/really-crazy-encodings/src/core/preprocess.rkt	81	0
run-improve!	/home/nightlies/herbie/really-crazy-encodings/src/core/mainloop.rkt	45	0
get-alternatives/report	/home/nightlies/herbie/really-crazy-encodings/src/api/sandbox.rkt	174	0
(unnamed)	/home/nightlies/herbie/really-crazy-encodings/src/api/sandbox.rkt	265	6
(unnamed)	/usr/share/racket/pkgs/profile-lib/main.rkt	40	10
profile-thunk	/usr/share/racket/pkgs/profile-lib/main.rkt	9	0
in-engine	/home/nightlies/herbie/really-crazy-encodings/src/api/sandbox.rkt	283	2
(unnamed)	/usr/share/racket/collects/racket/engine.rkt	42	24