\[x \cdot e^{y \cdot \left(\log z - t\right) + a \cdot \left(\log \left(1 - z\right) - b\right)}\]

x \cdot e^{y \cdot \left(\log z - t\right) + a \cdot \left(\log \left(1 - z\right) - b\right)}

double f(double x, double y, double z, double t, double a, double b) {
        double r95299 = x;
        double r95300 = y;
        double r95301 = z;
        double r95302 = log(r95301);
        double r95303 = t;
        double r95304 = r95302 - r95303;
        double r95305 = r95300 * r95304;
        double r95306 = a;
        double r95307 = 1.0;
        double r95308 = r95307 - r95301;
        double r95309 = log(r95308);
        double r95310 = b;
        double r95311 = r95309 - r95310;
        double r95312 = r95306 * r95311;
        double r95313 = r95305 + r95312;
        double r95314 = exp(r95313);
        double r95315 = r95299 * r95314;
        return r95315;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019323 
(FPCore (x y z t a b)
  :name "Numeric.SpecFunctions:incompleteBetaApprox from math-functions-0.1.5.2, B"
  :precision binary64
  (* x (exp (+ (* y (- (log z) t)) (* a (- (log (- 1 z)) b))))))

Backtrace

get-representation: Unknown representation real		L	C
(unnamed)	/data/pavpan/nightlies/herbie/fix-interface-bugs/src/core/regimes.rkt	65	3
filter	/opt/racket-7.2/collects/racket/private/list.rkt	256	2
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	369	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