ENA, Section 1.4, Exercise 4b, n=2

Specification

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\[\left(-1000000000 \leq x \land x \leq 1000000000\right) \land \left(-1 \leq \varepsilon \land \varepsilon \leq 1\right)\]
\[\begin{array}{l} \\ {\left(x + \varepsilon\right)}^{2} - {x}^{2} \end{array} \]
(FPCore (x eps) :precision binary64 (- (pow (+ x eps) 2.0) (pow x 2.0)))
double code(double x, double eps) {
	return pow((x + eps), 2.0) - pow(x, 2.0);
}

real(8) function code(x, eps)
    real(8), intent (in) :: x
    real(8), intent (in) :: eps
    code = ((x + eps) ** 2.0d0) - (x ** 2.0d0)
end function

public static double code(double x, double eps) {
	return Math.pow((x + eps), 2.0) - Math.pow(x, 2.0);
}

def code(x, eps):
	return math.pow((x + eps), 2.0) - math.pow(x, 2.0)

function code(x, eps)
	return Float64((Float64(x + eps) ^ 2.0) - (x ^ 2.0))
end

function tmp = code(x, eps)
	tmp = ((x + eps) ^ 2.0) - (x ^ 2.0);
end

code[x_, eps_] := N[(N[Power[N[(x + eps), $MachinePrecision], 2.0], $MachinePrecision] - N[Power[x, 2.0], $MachinePrecision]), $MachinePrecision]

\begin{array}{l}

\\
{\left(x + \varepsilon\right)}^{2} - {x}^{2}
\end{array}

Reproduce

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herbie shell --seed 2024271 
(FPCore (x eps)
  :name "ENA, Section 1.4, Exercise 4b, n=2"
  :precision binary64
  :pre (and (and (<= -1000000000.0 x) (<= x 1000000000.0)) (and (<= -1.0 eps) (<= eps 1.0)))
  (- (pow (+ x eps) 2.0) (pow x 2.0)))

Please file a bug report with this information.

Backtrace

abs: contract violation expected: real? given: -96.0250895071208+6.283185307179586iLC
f89.../match/compiler.rkt55940
predict-errors/home/nightlies/herbie/bhargav-log-space/src/core/explain.rkt970
explain/home/nightlies/herbie/bhargav-log-space/src/core/explain.rkt6500
explain!/home/nightlies/herbie/bhargav-log-space/src/core/mainloop.rkt3230
run-improve!/home/nightlies/herbie/bhargav-log-space/src/core/mainloop.rkt450
get-alternatives/report/home/nightlies/herbie/bhargav-log-space/src/api/sandbox.rkt1860
(unnamed)/home/nightlies/herbie/bhargav-log-space/src/api/sandbox.rkt2826
(unnamed)/usr/share/racket/pkgs/profile-lib/main.rkt4010
profile-thunk/usr/share/racket/pkgs/profile-lib/main.rkt90
(unnamed)/usr/share/racket/collects/racket/engine.rkt4224