?

\[0 \leq x \land x \leq 2\]

\[x \cdot \left(x \cdot x\right) + x \cdot x \]

(FPCore (x) :precision binary64 (+ (* x (* x x)) (* x x)))

double code(double x) {
	return (x * (x * x)) + (x * x);
}

real(8) function code(x)
    real(8), intent (in) :: x
    code = (x * (x * x)) + (x * x)
end function

public static double code(double x) {
	return (x * (x * x)) + (x * x);
}

def code(x):
	return (x * (x * x)) + (x * x)

function code(x)
	return Float64(Float64(x * Float64(x * x)) + Float64(x * x))
end

function tmp = code(x)
	tmp = (x * (x * x)) + (x * x);
end

code[x_] := N[(N[(x * N[(x * x), $MachinePrecision]), $MachinePrecision] + N[(x * x), $MachinePrecision]), $MachinePrecision]

x \cdot \left(x \cdot x\right) + x \cdot x

Reproduce?

Please include this information when filing a bug report:

herbie shell --seed 2023245 
(FPCore (x)
  :name "Expression 3, p15"
  :precision binary64
  :pre (and (<= 0.0 x) (<= x 2.0))

  :herbie-target
  (* (* (+ 1.0 x) x) x)

  (+ (* x (* x x)) (* x x)))

Backtrace

arb-<=: arity mismatch; the expected number of arguments does not match the given number expected: 0 given: 2		L	C
f	/home/nightlies/herbie/arb-support/src/programs.rkt	187	2
(unnamed)	/home/nightlies/herbie/arb-support/src/ground-truth.rkt	23	2
search-step	/home/nightlies/herbie/arb-support/src/searchreals.rkt	37	0
find-intervals	/home/nightlies/herbie/arb-support/src/searchreals.rkt	87	0
make-sampler	/home/nightlies/herbie/arb-support/src/sampling.rkt	94	0
sample-points	/home/nightlies/herbie/arb-support/src/ground-truth.rkt	64	0
setup-context!	/home/nightlies/herbie/arb-support/src/mainloop.rkt	293	0
get-alternatives/report	/home/nightlies/herbie/arb-support/src/sandbox.rkt	148	0
(unnamed)	/home/nightlies/herbie/arb-support/src/sandbox.rkt	247	6
(unnamed)	/usr/share/racket/pkgs/profile-lib/main.rkt	40	10
profile-thunk	/usr/share/racket/pkgs/profile-lib/main.rkt	9	0
(unnamed)	/usr/share/racket/collects/racket/engine.rkt	42	24