\[100 \cdot \frac{x - x}{x}\]
100 \cdot \frac{x - x}{x}
double f(double x) {
        double r8370 = 100.0;
        double r8371 = x;
        double r8372 = r8371 - r8371;
        double r8373 = r8372 / r8371;
        double r8374 = r8370 * r8373;
        return r8374;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019194 
(FPCore (x)
  :name "ReportTypes:explainFloat from gipeda-0.1.2.1"

  :herbie-target
  0.0

  (* 100.0 (/ (- x x) x)))

Backtrace

result arity mismatch; expected number of values not received expected: 2 received: 1 in: local-binding form values...: 0LC
loop/data/pavpan/nightlies/herbie/various-cleanup/src/core/extraction.rkt252
(unnamed)/data/pavpan/nightlies/herbie/various-cleanup/src/core/simplify.rkt260
simplify!/data/pavpan/nightlies/herbie/various-cleanup/src/mainloop.rkt2200
run-improve47/data/pavpan/nightlies/herbie/various-cleanup/src/mainloop.rkt3420
(unnamed)/opt/racket-7.0/collects/racket/private/more-scheme.rkt26128
run/opt/racket-7.0/share/pkgs/profile-lib/main.rkt392
profile-thunk16/opt/racket-7.0/share/pkgs/profile-lib/main.rkt90
(unnamed)/opt/racket-7.0/collects/racket/private/more-scheme.rkt26128