?

\[x + \frac{y}{500} \]

(FPCore (x y) :precision binary64 (+ x (/ y 500.0)))

double code(double x, double y) {
	return x + (y / 500.0);
}

real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = x + (y / 500.0d0)
end function

public static double code(double x, double y) {
	return x + (y / 500.0);
}

def code(x, y):
	return x + (y / 500.0)

function code(x, y)
	return Float64(x + Float64(y / 500.0))
end

function tmp = code(x, y)
	tmp = x + (y / 500.0);
end

code[x_, y_] := N[(x + N[(y / 500.0), $MachinePrecision]), $MachinePrecision]

x + \frac{y}{500}

Reproduce?

Please include this information when filing a bug report:

herbie shell --seed 2023243 
(FPCore (x y)
  :name "Data.Colour.CIE:cieLAB from colour-2.3.3, C"
  :precision binary64
  (+ x (/ y 500.0)))

_arb-ptr: contract violation expected: _arb? given: '((ival (bf "-2.1027758784971976484017606e323228496") (bf "2.1027758784971976484017606e323228496")))		L	C
_arb-ptr	unknown
arb->ival	/home/nightlies/herbie/arb-support/src/arb.rkt	160	0
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