Exception for Diagrams.Solve.Polynomial:quadForm from diagrams-solve-0.1, C

Specification

Math

\[\begin{array}{l} \\ \frac{x}{y \cdot 2} \end{array} \]

FPCore

(FPCore (x y) :precision binary64 (/ x (* y 2.0)))

C

double code(double x, double y) {
	return x / (y * 2.0);
}

Fortran

real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = x / (y * 2.0d0)
end function

Java

public static double code(double x, double y) {
	return x / (y * 2.0);
}

Python

def code(x, y):
	return x / (y * 2.0)

Julia

function code(x, y)
	return Float64(x / Float64(y * 2.0))
end

MATLAB

function tmp = code(x, y)
	tmp = x / (y * 2.0);
end

Wolfram

code[x_, y_] := N[(x / N[(y * 2.0), $MachinePrecision]), $MachinePrecision]

Reproduce

herbie shell --seed 2024246 
(FPCore (x y)
  :name "Diagrams.Solve.Polynomial:quadForm from diagrams-solve-0.1, C"
  :precision binary64
  (/ x (* y 2.0)))

Please file a bug report with this information.

Backtrace

map: contract violation expected: list? given: '((/.f64 x (*.f64 y #s(literal 2 binary64))) . #hasheq((errs . (1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1...		L	C
gen-map	/usr/local/racket/collects/racket/private/map.rkt	257	2
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	493	0
explain!	/home/nightlies/herbie/zane-concrete-values/src/core/mainloop.rkt	322	0
run-improve!	/home/nightlies/herbie/zane-concrete-values/src/core/mainloop.rkt	44	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/local/racket/share/pkgs/profile-lib/main.rkt	40	10
profile-thunk	/usr/local/racket/share/pkgs/profile-lib/main.rkt	9	0
(unnamed)	/usr/local/racket/collects/racket/engine.rkt	42	24