Specification

\[\begin{array}{l} \\ e^{-\left(1 - x \cdot x\right)} \end{array} \]

(FPCore (x) :precision binary64 (exp (- (- 1.0 (* x x)))))

double code(double x) {
	return exp(-(1.0 - (x * x)));
}

real(8) function code(x)
    real(8), intent (in) :: x
    code = exp(-(1.0d0 - (x * x)))
end function

public static double code(double x) {
	return Math.exp(-(1.0 - (x * x)));
}

def code(x):
	return math.exp(-(1.0 - (x * x)))

function code(x)
	return exp(Float64(-Float64(1.0 - Float64(x * x))))
end

function tmp = code(x)
	tmp = exp(-(1.0 - (x * x)));
end

code[x_] := N[Exp[(-N[(1.0 - N[(x * x), $MachinePrecision]), $MachinePrecision])], $MachinePrecision]

\begin{array}{l}

\\
e^{-\left(1 - x \cdot x\right)}
\end{array}

Reproduce

herbie shell --seed 2024005 
(FPCore (x)
  :name "exp neg sub"
  :precision binary64
  (exp (- (- 1.0 (* x x)))))

Please file a bug report with this information.

repr->cost: arity mismatch; the expected number of arguments does not match the given number expected: 2 given: 1		L	C
loop	.../private/map.rkt	54	19
f490	.../match/compiler.rkt	548	40
loop	.../private/map.rkt	54	19
f490	.../match/compiler.rkt	548	40
loop	.../private/map.rkt	54	19
f490	.../match/compiler.rkt	548	40
make-alt-table	/home/nightlies/herbie/platforms/src/core/alt-table.rkt	40	0
(unnamed)	/usr/share/racket/collects/racket/contract/private/arrow-val-first.rkt	486	18
initialize-alt-table!	/home/nightlies/herbie/platforms/src/mainloop.rkt	316	0
mutate!	/home/nightlies/herbie/platforms/src/mainloop.rkt	352	0
run-improve!	/home/nightlies/herbie/platforms/src/mainloop.rkt	338	0
get-alternatives/report	/home/nightlies/herbie/platforms/src/sandbox.rkt	169	0
(unnamed)	/home/nightlies/herbie/platforms/src/sandbox.rkt	262	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