?

\[x - y \cdot y \]

(FPCore (x y) :precision binary64 (- x (* y y)))

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

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

public static double code(double x, double y) {
	return x - (y * y);
}

def code(x, y):
	return x - (y * y)

function code(x, y)
	return Float64(x - Float64(y * y))
end

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

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

x - y \cdot y

Reproduce?

Please include this information when filing a bug report:

herbie shell --seed 2023244 
(FPCore (x y)
  :name "Graphics.Rasterific.Shading:$sradialGradientWithFocusShader from Rasterific-0.6.1"
  :precision binary64
  (- x (* y y)))

Backtrace

_arb-ptr: contract violation expected: _arb? given: 3		L	C
_arb-ptr	unknown
(unnamed)	/home/nightlies/herbie/arb-support/src/arb.rkt	154	16
f	/home/nightlies/herbie/arb-support/src/programs.rkt	187	2
(unnamed)	/home/nightlies/herbie/arb-support/src/ground-truth.rkt	23	2
arb-eval	/home/nightlies/herbie/arb-support/src/sampling.rkt	126	0
f	/home/nightlies/herbie/arb-support/src/ground-truth.rkt	46	2
compute-local-errors	/home/nightlies/herbie/arb-support/src/core/localize.rkt	38	0
batch-localize-error	/home/nightlies/herbie/arb-support/src/core/localize.rkt	26	0
localize!	/home/nightlies/herbie/arb-support/src/mainloop.rkt	123	0
run-iter!	/home/nightlies/herbie/arb-support/src/mainloop.rkt	276	0
mutate!	/home/nightlies/herbie/arb-support/src/mainloop.rkt	395	0
run-improve!	/home/nightlies/herbie/arb-support/src/mainloop.rkt	353	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

25.0% of points produce a very large (infinite) output. You may want to add a precondition. (more)

?

Reproduce?

Backtrace