Exception for bug500, discussion (missed optimization)

• could not determine a ground truth

  1. x = -2.9080845794729294e+85

Specification

Math

\[\begin{array}{l} \\ \log \left(\frac{\sinh x}{x}\right) \end{array} \]

FPCore

(FPCore (x) :precision binary64 (log (/ (sinh x) x)))

C

double code(double x) {
	return log((sinh(x) / x));
}

Fortran

real(8) function code(x)
    real(8), intent (in) :: x
    code = log((sinh(x) / x))
end function

Java

public static double code(double x) {
	return Math.log((Math.sinh(x) / x));
}

Python

def code(x):
	return math.log((math.sinh(x) / x))

Julia

function code(x)
	return log(Float64(sinh(x) / x))
end

MATLAB

function tmp = code(x)
	tmp = log((sinh(x) / x));
end

Wolfram

code[x_] := N[Log[N[(N[Sinh[x], $MachinePrecision] / x), $MachinePrecision]], $MachinePrecision]

Reproduce

herbie shell --seed 2023319 
(FPCore (x)
  :name "bug500, discussion (missed optimization)"
  :precision binary64

  :herbie-target
  (if (< (fabs x) 0.085) (* (* x x) (fma (fma (fma -2.6455026455026456e-5 (* x x) 0.0003527336860670194) (* x x) -0.005555555555555556) (* x x) 0.16666666666666666)) (log (/ (sinh x) x)))

  (log (/ (sinh x) x)))

Please file a bug report with this information.

Backtrace

mark-erroneous!: arity mismatch; the expected number of arguments does not match the given number expected: 2 given: 1		L	C
predicted-errors	/home/nightlies/herbie/error-explanations/src/error-table.rkt	48	0
mutate!	/home/nightlies/herbie/error-explanations/src/mainloop.rkt	339	0
run-improve!	/home/nightlies/herbie/error-explanations/src/mainloop.rkt	326	0
get-alternatives/report	/home/nightlies/herbie/error-explanations/src/sandbox.rkt	149	0
(unnamed)	/home/nightlies/herbie/error-explanations/src/sandbox.rkt	245	6
(unnamed)	/usr/share/racket/pkgs/profile-lib/main.rkt	40	10
profile-thunk	/usr/share/racket/pkgs/profile-lib/main.rkt	9	0
(unnamed)	/usr/share/racket/collects/racket/engine.rkt	42	24