\[x + \left(y - z\right) \cdot \frac{t - x}{a - z}\]

x + \left(y - z\right) \cdot \frac{t - x}{a - z}

double f(double x, double y, double z, double t, double a) {
        double r8397 = x;
        double r8398 = y;
        double r8399 = z;
        double r8400 = r8398 - r8399;
        double r8401 = t;
        double r8402 = r8401 - r8397;
        double r8403 = a;
        double r8404 = r8403 - r8399;
        double r8405 = r8402 / r8404;
        double r8406 = r8400 * r8405;
        double r8407 = r8397 + r8406;
        return r8407;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019194 
(FPCore (x y z t a)
  :name "Numeric.Signal:interpolate   from hsignal-0.2.7.1"
  (+ x (* (- y z) (/ (- t x) (- a z)))))

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