Exception for 2-ancestry mixing, zero discriminant

Specification

Math

\[\begin{array}{l} \\ \sqrt[3]{\frac{g}{2 \cdot a}} \end{array} \]

FPCore

(FPCore (g a) :precision binary64 (cbrt (/ g (* 2.0 a))))

C

double code(double g, double a) {
	return cbrt((g / (2.0 * a)));
}

Java

public static double code(double g, double a) {
	return Math.cbrt((g / (2.0 * a)));
}

Julia

function code(g, a)
	return cbrt(Float64(g / Float64(2.0 * a)))
end

Wolfram

code[g_, a_] := N[Power[N[(g / N[(2.0 * a), $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision]

Reproduce

herbie shell --seed 2024271 
(FPCore (g a)
  :name "2-ancestry mixing, zero discriminant"
  :precision binary64
  (cbrt (/ g (* 2.0 a))))

Please file a bug report with this information.

Backtrace

abs: contract violation expected: real? given: +inf.0+inf.0i		L	C
logabs	/home/nightlies/herbie/bhargav-log-space/src/core/logspace.rkt	190	0
f166	.../match/compiler.rkt	559	40
predict-errors	/home/nightlies/herbie/bhargav-log-space/src/core/explain.rkt	96	0
explain	/home/nightlies/herbie/bhargav-log-space/src/core/explain.rkt	647	0
explain!	/home/nightlies/herbie/bhargav-log-space/src/core/mainloop.rkt	323	0
run-improve!	/home/nightlies/herbie/bhargav-log-space/src/core/mainloop.rkt	45	0
get-alternatives/report	/home/nightlies/herbie/bhargav-log-space/src/api/sandbox.rkt	186	0
(unnamed)	/home/nightlies/herbie/bhargav-log-space/src/api/sandbox.rkt	282	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