Statistics.Distribution.Poisson:$clogProbability from math-functions-0.1.5.2

Specification

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\[\begin{array}{l} \\ \left(x \cdot \log y - z\right) - y \end{array} \]
(FPCore (x y z) :precision binary64 (- (- (* x (log y)) z) y))
double code(double x, double y, double z) {
	return ((x * log(y)) - z) - y;
}
real(8) function code(x, y, z)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    code = ((x * log(y)) - z) - y
end function
public static double code(double x, double y, double z) {
	return ((x * Math.log(y)) - z) - y;
}
def code(x, y, z):
	return ((x * math.log(y)) - z) - y
function code(x, y, z)
	return Float64(Float64(Float64(x * log(y)) - z) - y)
end
function tmp = code(x, y, z)
	tmp = ((x * log(y)) - z) - y;
end
code[x_, y_, z_] := N[(N[(N[(x * N[Log[y], $MachinePrecision]), $MachinePrecision] - z), $MachinePrecision] - y), $MachinePrecision]
\begin{array}{l}

\\
\left(x \cdot \log y - z\right) - y
\end{array}

Reproduce

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herbie shell --seed 2024238 
(FPCore (x y z)
  :name "Statistics.Distribution.Poisson:$clogProbability from math-functions-0.1.5.2"
  :precision binary64
  (- (- (* x (log y)) z) y))

Please file a bug report with this information.

Backtrace

flexp2: contract violation expected: flonum? given: 1303.8790289425006-3.141592653589793i in: the 1st argument of (-> flonum? any) contract from: <pkgs>/math-lib/math/private/flonum/flonum-exp.rkt blaming: <pkgs>/herbie/core/logspace.rkt (assuming the contract is correct) at: <pkgs>/math-lib/math/private/flonum/flonum-exp.rkt:99:11LC
raise-blame-error/usr/local/racket/collects/racket/contract/private/blame.rkt3460
(unnamed)/usr/local/racket/collects/racket/contract/private/arrow-higher-order.rkt37933
log-/home/nightlies/herbie/bhargav-log-space/src/core/logspace.rkt570
compiled-prog/home/nightlies/herbie/bhargav-log-space/src/core/compiler.rkt262
predict-errors/home/nightlies/herbie/bhargav-log-space/src/core/explain.rkt880
explain/home/nightlies/herbie/bhargav-log-space/src/core/explain.rkt6140
explain!/home/nightlies/herbie/bhargav-log-space/src/core/mainloop.rkt3210
run-improve!/home/nightlies/herbie/bhargav-log-space/src/core/mainloop.rkt430
get-alternatives/report/home/nightlies/herbie/bhargav-log-space/src/api/sandbox.rkt1840
(unnamed)/home/nightlies/herbie/bhargav-log-space/src/api/sandbox.rkt2806
(unnamed)/usr/local/racket/share/pkgs/profile-lib/main.rkt4010
profile-thunk/usr/local/racket/share/pkgs/profile-lib/main.rkt90
(unnamed)/usr/local/racket/collects/racket/engine.rkt4224