math.cos on complex, imaginary part

Specification

?
\[\begin{array}{l} \\ \left(0.5 \cdot \sin re\right) \cdot \left(e^{-im} - e^{im}\right) \end{array} \]
(FPCore (re im)
 :precision binary64
 (* (* 0.5 (sin re)) (- (exp (- im)) (exp im))))
double code(double re, double im) {
	return (0.5 * sin(re)) * (exp(-im) - exp(im));
}

real(8) function code(re, im)
    real(8), intent (in) :: re
    real(8), intent (in) :: im
    code = (0.5d0 * sin(re)) * (exp(-im) - exp(im))
end function

public static double code(double re, double im) {
	return (0.5 * Math.sin(re)) * (Math.exp(-im) - Math.exp(im));
}

def code(re, im):
	return (0.5 * math.sin(re)) * (math.exp(-im) - math.exp(im))

function code(re, im)
	return Float64(Float64(0.5 * sin(re)) * Float64(exp(Float64(-im)) - exp(im)))
end

function tmp = code(re, im)
	tmp = (0.5 * sin(re)) * (exp(-im) - exp(im));
end

code[re_, im_] := N[(N[(0.5 * N[Sin[re], $MachinePrecision]), $MachinePrecision] * N[(N[Exp[(-im)], $MachinePrecision] - N[Exp[im], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

\begin{array}{l}

\\
\left(0.5 \cdot \sin re\right) \cdot \left(e^{-im} - e^{im}\right)
\end{array}

Reproduce

?
herbie shell --seed 2024277 
(FPCore (re im)
  :name "math.cos on complex, imaginary part"
  :precision binary64

  :alt
  (! :herbie-platform default (if (< (fabs im) 1) (- (* (sin re) (+ im (* 1/6 im im im) (* 1/120 im im im im im)))) (* (* 1/2 (sin re)) (- (exp (- im)) (exp im)))))

  (* (* 0.5 (sin re)) (- (exp (- im)) (exp im))))

Please file a bug report with this information.

Backtrace

match: no matching clause for 'reLC
fn->ival-fn/home/nightlies/.local/share/racket/8.10/pkgs/rival/eval/compile.rkt170
rival-compile/home/nightlies/.local/share/racket/8.10/pkgs/rival/eval/compile.rkt2530
(unnamed)/usr/share/racket/collects/racket/contract/private/arrow-val-first.rkt48618
f115.../match/compiler.rkt55940
compute-true-error/home/nightlies/herbie/zane-concrete-values/src/core/localize.rkt1310
compute-local-errors/home/nightlies/herbie/zane-concrete-values/src/core/localize.rkt2160
actual-errors/home/nightlies/herbie/zane-concrete-values/src/core/explain.rkt350
generate-timelines/home/nightlies/herbie/zane-concrete-values/src/core/explain.rkt4980
explain!/home/nightlies/herbie/zane-concrete-values/src/core/mainloop.rkt3230
run-improve!/home/nightlies/herbie/zane-concrete-values/src/core/mainloop.rkt450
get-alternatives/report/home/nightlies/herbie/zane-concrete-values/src/api/sandbox.rkt1860
(unnamed)/home/nightlies/herbie/zane-concrete-values/src/api/sandbox.rkt2826
(unnamed)/usr/share/racket/pkgs/profile-lib/main.rkt4010
profile-thunk/usr/share/racket/pkgs/profile-lib/main.rkt90
(unnamed)/usr/share/racket/collects/racket/engine.rkt4224