Exception for bug329 (missed optimization)

Specification

\[x \geq 0\]

Math

\[\begin{array}{l} \\ \tan^{-1} \left(\frac{y}{x}\right) \end{array} \]

FPCore

(FPCore (x y) :precision binary64 (atan (/ y x)))

C

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

Fortran

real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = atan((y / x))
end function

Java

public static double code(double x, double y) {
	return Math.atan((y / x));
}

Python

def code(x, y):
	return math.atan((y / x))

Julia

function code(x, y)
	return atan(Float64(y / x))
end

MATLAB

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

Wolfram

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

Reproduce

herbie shell --seed 2024005 
(FPCore (x y)
  :name "bug329 (missed optimization)"
  :precision binary64
  :pre (>= x 0.0)

  :herbie-target
  (atan2 y x)

  (atan (/ y x)))

Please file a bug report with this information.

Backtrace

repr->cost: arity mismatch; the expected number of arguments does not match the given number expected: 2 given: 1		L	C
loop	.../private/map.rkt	54	19
f490	.../match/compiler.rkt	548	40
loop	.../private/map.rkt	54	19
f490	.../match/compiler.rkt	548	40
make-alt-table	/home/nightlies/herbie/platforms/src/core/alt-table.rkt	40	0
(unnamed)	/usr/share/racket/collects/racket/contract/private/arrow-val-first.rkt	486	18
initialize-alt-table!	/home/nightlies/herbie/platforms/src/mainloop.rkt	316	0
mutate!	/home/nightlies/herbie/platforms/src/mainloop.rkt	352	0
run-improve!	/home/nightlies/herbie/platforms/src/mainloop.rkt	338	0
get-alternatives/report	/home/nightlies/herbie/platforms/src/sandbox.rkt	169	0
(unnamed)	/home/nightlies/herbie/platforms/src/sandbox.rkt	262	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