Exception for The quadratic formula (r2)

Specification

Math

\[\begin{array}{l} \\ \frac{\left(-b\right) - \sqrt{b \cdot b - 4 \cdot \left(a \cdot c\right)}}{2 \cdot a} \end{array} \]

FPCore

(FPCore (a b c)
 :precision binary64
 (/ (- (- b) (sqrt (- (* b b) (* 4.0 (* a c))))) (* 2.0 a)))

C

double code(double a, double b, double c) {
	return (-b - sqrt(((b * b) - (4.0 * (a * c))))) / (2.0 * a);
}

Fortran

real(8) function code(a, b, c)
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8), intent (in) :: c
    code = (-b - sqrt(((b * b) - (4.0d0 * (a * c))))) / (2.0d0 * a)
end function

Java

public static double code(double a, double b, double c) {
	return (-b - Math.sqrt(((b * b) - (4.0 * (a * c))))) / (2.0 * a);
}

Python

def code(a, b, c):
	return (-b - math.sqrt(((b * b) - (4.0 * (a * c))))) / (2.0 * a)

Julia

function code(a, b, c)
	return Float64(Float64(Float64(-b) - sqrt(Float64(Float64(b * b) - Float64(4.0 * Float64(a * c))))) / Float64(2.0 * a))
end

MATLAB

function tmp = code(a, b, c)
	tmp = (-b - sqrt(((b * b) - (4.0 * (a * c))))) / (2.0 * a);
end

Wolfram

code[a_, b_, c_] := N[(N[((-b) - N[Sqrt[N[(N[(b * b), $MachinePrecision] - N[(4.0 * N[(a * c), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] / N[(2.0 * a), $MachinePrecision]), $MachinePrecision]

Reproduce

herbie shell --seed 2024146 
(FPCore (a b c)
  :name "The quadratic formula (r2)"
  :precision binary64

  :alt
  (! :herbie-platform default (let ((d (sqrt (- (* b b) (* 4 (* a c)))))) (let ((r1 (/ (+ (- b) d) (* 2 a)))) (let ((r2 (/ (- (- b) d) (* 2 a)))) (if (< b 0) (/ c (* a r1)) r2)))))

  (/ (- (- b) (sqrt (- (* b b) (* 4.0 (* a c))))) (* 2.0 a)))

Please file a bug report with this information.

Backtrace

application: not a procedure; expected a procedure that can be applied to arguments given: #f		L	C
backward-pass	/home/nightlies/herbie/jackson-mergable-platform-changes/src/correct-round.rkt	146	0
compiled-spec	/home/nightlies/herbie/jackson-mergable-platform-changes/src/correct-round.rkt	27	2
compiled-spec	/home/nightlies/herbie/jackson-mergable-platform-changes/src/correct-round.rkt	143	2
compiled-spec	/home/nightlies/herbie/jackson-mergable-platform-changes/src/correct-round.rkt	27	2
compiled-spec	/home/nightlies/herbie/jackson-mergable-platform-changes/src/ground-truth.rkt	31	2
ival-eval	/home/nightlies/herbie/jackson-mergable-platform-changes/src/ground-truth.rkt	55	0
<eval-prog-real>	/home/nightlies/herbie/jackson-mergable-platform-changes/src/ground-truth.rkt	86	2
compute-local-errors	/home/nightlies/herbie/jackson-mergable-platform-changes/src/core/localize.rkt	75	0
batch-localize-errors	/home/nightlies/herbie/jackson-mergable-platform-changes/src/core/localize.rkt	61	0
localize!	/home/nightlies/herbie/jackson-mergable-platform-changes/src/mainloop.rkt	201	0
run-iter!	/home/nightlies/herbie/jackson-mergable-platform-changes/src/mainloop.rkt	73	0
mutate!	/home/nightlies/herbie/jackson-mergable-platform-changes/src/mainloop.rkt	65	0
run-improve!	/home/nightlies/herbie/jackson-mergable-platform-changes/src/mainloop.rkt	51	0
get-alternatives/report	/home/nightlies/herbie/jackson-mergable-platform-changes/src/sandbox.rkt	169	0
(unnamed)	/home/nightlies/herbie/jackson-mergable-platform-changes/src/sandbox.rkt	263	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