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

\left(\left(x \cdot \log y - y\right) - z\right) + \log t

double f(double x, double y, double z, double t) {
        double r78591 = x;
        double r78592 = y;
        double r78593 = log(r78592);
        double r78594 = r78591 * r78593;
        double r78595 = r78594 - r78592;
        double r78596 = z;
        double r78597 = r78595 - r78596;
        double r78598 = t;
        double r78599 = log(r78598);
        double r78600 = r78597 + r78599;
        return r78600;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019323 +o rules:numerics
(FPCore (x y z t)
  :name "Numeric.SpecFunctions:incompleteGamma from math-functions-0.1.5.2, A"
  :precision binary64
  (+ (- (- (* x (log y)) y) z) (log t)))

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