Exception for Statistics.Distribution.CauchyLorentz:$cdensity from math-functions-0.1.5.2

Specification

\[\begin{array}{l} \\ \frac{\frac{1}{x}}{y \cdot \left(1 + z \cdot z\right)} \end{array} \]

(FPCore (x y z) :precision binary64 (/ (/ 1.0 x) (* y (+ 1.0 (* z z)))))

double code(double x, double y, double z) {
	return (1.0 / x) / (y * (1.0 + (z * z)));
}

real(8) function code(x, y, z)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    code = (1.0d0 / x) / (y * (1.0d0 + (z * z)))
end function

public static double code(double x, double y, double z) {
	return (1.0 / x) / (y * (1.0 + (z * z)));
}

def code(x, y, z):
	return (1.0 / x) / (y * (1.0 + (z * z)))

function code(x, y, z)
	return Float64(Float64(1.0 / x) / Float64(y * Float64(1.0 + Float64(z * z))))
end

function tmp = code(x, y, z)
	tmp = (1.0 / x) / (y * (1.0 + (z * z)));
end

code[x_, y_, z_] := N[(N[(1.0 / x), $MachinePrecision] / N[(y * N[(1.0 + N[(z * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

\begin{array}{l}

\\
\frac{\frac{1}{x}}{y \cdot \left(1 + z \cdot z\right)}
\end{array}

Reproduce

herbie shell --seed 2024277 
(FPCore (x y z)
  :name "Statistics.Distribution.CauchyLorentz:$cdensity from math-functions-0.1.5.2"
  :precision binary64

  :alt
  (! :herbie-platform default (if (< (* y (+ 1 (* z z))) -inf.0) (/ (/ 1 y) (* (+ 1 (* z z)) x)) (if (< (* y (+ 1 (* z z))) 868074325056725200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000) (/ (/ 1 x) (* (+ 1 (* z z)) y)) (/ (/ 1 y) (* (+ 1 (* z z)) x)))))

  (/ (/ 1.0 x) (* y (+ 1.0 (* z z)))))

Please file a bug report with this information.

Backtrace

rival-apply: contract violation expected: (or/c ^TYPE? boolean?) given: 0 in: an element of the 2nd argument of (-> rival-machine? (vectorof (or/c ^TYPE? boolean?)) (vectorof any/c)) contract from: <pkgs>/rival/main.rkt blaming: <pkgs>/herbie/core/rival.rkt (assuming the contract is correct) at: <pkgs>/rival/main.rkt:95:24		L	C
raise-blame-error	/usr/share/racket/collects/racket/contract/private/blame.rkt	346	0
loop	.../private/map.rkt	40	19
vector-map/update	/usr/share/racket/collects/racket/vector.rkt	62	0
vector-map	/usr/share/racket/collects/racket/vector.rkt	106	0
rival-apply	/home/nightlies/.local/share/racket/8.10/pkgs/rival/eval/main.rkt	65	0
(unnamed)	/usr/share/racket/collects/racket/contract/private/arrow-val-first.rkt	486	18
(unnamed)	/home/nightlies/herbie/zane-concrete-values/src/core/rival.rkt	76	4
real-apply	/home/nightlies/herbie/zane-concrete-values/src/core/rival.rkt	67	0
(unnamed)	.../private/arrow-val-first.rkt	486	18
<eval-prog-real>	/home/nightlies/herbie/zane-concrete-values/src/core/sampling.rkt	136	2
compute-local-errors	/home/nightlies/herbie/zane-concrete-values/src/core/localize.rkt	216	0
actual-errors	/home/nightlies/herbie/zane-concrete-values/src/core/explain.rkt	35	0
generate-timelines	/home/nightlies/herbie/zane-concrete-values/src/core/explain.rkt	498	0
explain!	/home/nightlies/herbie/zane-concrete-values/src/core/mainloop.rkt	323	0
run-improve!	/home/nightlies/herbie/zane-concrete-values/src/core/mainloop.rkt	45	0
get-alternatives/report	/home/nightlies/herbie/zane-concrete-values/src/api/sandbox.rkt	186	0
(unnamed)	/home/nightlies/herbie/zane-concrete-values/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