\[1000000 \cdot \left(x - x\right) \]
(FPCore (x) :precision binary64 (* 1000000.0 (- x x)))
double code(double x) {
	return 1000000.0 * (x - x);
}
real(8) function code(x)
    real(8), intent (in) :: x
    code = 1000000.0d0 * (x - x)
end function
public static double code(double x) {
	return 1000000.0 * (x - x);
}
def code(x):
	return 1000000.0 * (x - x)
function code(x)
	return Float64(1000000.0 * Float64(x - x))
end
function tmp = code(x)
	tmp = 1000000.0 * (x - x);
end
code[x_] := N[(1000000.0 * N[(x - x), $MachinePrecision]), $MachinePrecision]
1000000 \cdot \left(x - x\right)

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2022203 
(FPCore (x)
  :name "Development.Shake.Profile:generateTrace from shake-0.15.5"
  :precision binary64

  :herbie-target
  0.0

  (* 1000000.0 (- x x)))

Backtrace

hash-ref: no value found for key key: '~LC
get-parametric-operator/data/pavpan/nightlies/herbie/enumo-rat/src/syntax/syntax.rkt2180
f336.../match/compiler.rkt54840
expand-parametric/data/pavpan/nightlies/herbie/enumo-rat/src/syntax/sugar.rkt620
(unnamed)/data/pavpan/nightlies/herbie/enumo-rat/src/syntax/rules.rkt1768
generate-rules-for/data/pavpan/nightlies/herbie/enumo-rat/src/syntax/rules.rkt1610
generate-missing-rules/data/pavpan/nightlies/herbie/enumo-rat/src/syntax/rules.rkt1870
(unnamed)/data/pavpan/nightlies/herbie/enumo-rat/src/syntax/rules.rkt2926
get-swaps/data/pavpan/nightlies/herbie/enumo-rat/src/symmetry.rkt60
connected-components/data/pavpan/nightlies/herbie/enumo-rat/src/symmetry.rkt170
run-improve!/data/pavpan/nightlies/herbie/enumo-rat/src/mainloop.rkt2960
(unnamed)/data/pavpan/nightlies/herbie/enumo-rat/src/sandbox.rkt556
(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