\[x + \left(\left(y - x\right) \cdot 6\right) \cdot z\]

x + \left(\left(y - x\right) \cdot 6\right) \cdot z

double f(double x, double y, double z) {
        double r94181 = x;
        double r94182 = y;
        double r94183 = r94182 - r94181;
        double r94184 = 6.0;
        double r94185 = r94183 * r94184;
        double r94186 = z;
        double r94187 = r94185 * r94186;
        double r94188 = r94181 + r94187;
        return r94188;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019310 +o rules:numerics
(FPCore (x y z)
  :name "Data.Colour.RGBSpace.HSL:hsl from colour-2.3.3, E"
  :precision binary64

  :herbie-target
  (- x (* (* 6 z) (- x y)))

  (+ x (* (* (- y x) 6) z)))

Backtrace

argmin: contract violation expected: (and/c list? (not/c empty?)) given: '() argument position: 2nd other arguments...: #<procedure:composed>		L	C
argmin	/opt/racket-7.2/collects/racket/list.rkt	765	0
infer-splitpoints	/data/pavpan/nightlies/herbie/fix-interface-bugs/src/core/regimes.rkt	34	0
get-final-combination	/data/pavpan/nightlies/herbie/fix-interface-bugs/src/mainloop.rkt	370	0
(unnamed)	/opt/racket-7.2/collects/racket/private/more-scheme.rkt	261	28
run	/opt/racket-7.2/share/pkgs/profile-lib/main.rkt	39	2
profile-thunk16	/opt/racket-7.2/share/pkgs/profile-lib/main.rkt	9	0
(unnamed)	/opt/racket-7.2/collects/racket/private/more-scheme.rkt	261	28