?

\[\sqrt{x \cdot x + y} \]

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

double code(double x, double y) {
	return sqrt(((x * x) + y));
}

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

public static double code(double x, double y) {
	return Math.sqrt(((x * x) + y));
}

def code(x, y):
	return math.sqrt(((x * x) + y))

function code(x, y)
	return sqrt(Float64(Float64(x * x) + y))
end

function tmp = code(x, y)
	tmp = sqrt(((x * x) + y));
end

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

\sqrt{x \cdot x + y}

Reproduce?

Please include this information when filing a bug report:

herbie shell --seed 2023098 
(FPCore (x y)
  :name "Linear.Quaternion:$clog from linear-1.19.1.3"
  :precision binary64

  :herbie-target
  (if (< x -1.5097698010472593e+153) (- (+ (* 0.5 (/ y x)) x)) (if (< x 5.582399551122541e+57) (sqrt (+ (* x x) y)) (+ (* 0.5 (/ y x)) x)))

  (sqrt (+ (* x x) y)))

Backtrace

hash-ref: no value found for key key: 'false		L	C
(unnamed)	/home/nightlies/herbie/using-ruler-nightlies/src/syntax/syntax.rkt	230	2
f336	.../match/compiler.rkt	548	40
expand-parametric	/home/nightlies/herbie/using-ruler-nightlies/src/syntax/sugar.rkt	62	0
(unnamed)	/home/nightlies/herbie/using-ruler-nightlies/src/core/egg-herbie.rkt	255	9
rule->egg-rules	/home/nightlies/herbie/using-ruler-nightlies/src/core/egg-herbie.rkt	224	0
expand-rules	/home/nightlies/herbie/using-ruler-nightlies/src/core/egg-herbie.rkt	488	0
egraph-run-rules	/home/nightlies/herbie/using-ruler-nightlies/src/core/egg-herbie.rkt	509	0
(unnamed)	/home/nightlies/herbie/using-ruler-nightlies/src/core/simplify.rkt	58	3
with-egraph	/home/nightlies/herbie/using-ruler-nightlies/src/core/egg-herbie.rkt	333	0
simplify-batch	/home/nightlies/herbie/using-ruler-nightlies/src/core/simplify.rkt	23	0
(unnamed)	/usr/share/racket/collects/racket/contract/private/arrow-higher-order.rkt	379	33
get-swaps	/home/nightlies/herbie/using-ruler-nightlies/src/symmetry.rkt	6	0
connected-components	/home/nightlies/herbie/using-ruler-nightlies/src/symmetry.rkt	18	0
run-improve!	/home/nightlies/herbie/using-ruler-nightlies/src/mainloop.rkt	320	0
run-herbie	/home/nightlies/herbie/using-ruler-nightlies/src/sandbox.rkt	57	0
(unnamed)	/home/nightlies/herbie/using-ruler-nightlies/src/sandbox.rkt	133	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