\[\left(d1 \cdot 3 + d1 \cdot d2\right) + d1 \cdot d3\]

\left(d1 \cdot 3 + d1 \cdot d2\right) + d1 \cdot d3

double f(double d1, double d2, double d3) {
        double r8235 = d1;
        double r8236 = 3.0;
        double r8237 = r8235 * r8236;
        double r8238 = d2;
        double r8239 = r8235 * r8238;
        double r8240 = r8237 + r8239;
        double r8241 = d3;
        double r8242 = r8235 * r8241;
        double r8243 = r8240 + r8242;
        return r8243;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019194 +o rules:numerics
(FPCore (d1 d2 d3)
  :name "FastMath test3"

  :herbie-target
  (* d1 (+ (+ 3.0 d2) d3))

  (+ (+ (* d1 3.0) (* d1 d2)) (* d1 d3)))

Backtrace

result arity mismatch; expected number of values not received expected: 2 received: 1 in: local-binding form values...: 0		L	C
loop	/data/pavpan/nightlies/herbie/various-cleanup/src/core/extraction.rkt	25	2
(unnamed)	/data/pavpan/nightlies/herbie/various-cleanup/src/core/simplify.rkt	26	0
simplify!	/data/pavpan/nightlies/herbie/various-cleanup/src/mainloop.rkt	220	0
run-improve47	/data/pavpan/nightlies/herbie/various-cleanup/src/mainloop.rkt	342	0
(unnamed)	/opt/racket-7.0/collects/racket/private/more-scheme.rkt	261	28
run	/opt/racket-7.0/share/pkgs/profile-lib/main.rkt	39	2
profile-thunk16	/opt/racket-7.0/share/pkgs/profile-lib/main.rkt	9	0
(unnamed)	/opt/racket-7.0/collects/racket/private/more-scheme.rkt	261	28