Exception for System.Random.MWC.Distributions:blocks from mwc-random-0.13.3.2

• 24.8% of points produce a very large (infinite) output. You may want to add a precondition.

Specification

Math

\[\begin{array}{l} \\ \left(x \cdot 0.5\right) \cdot x \end{array} \]

FPCore

(FPCore (x) :precision binary64 (* (* x 0.5) x))

C

double code(double x) {
	return (x * 0.5) * x;
}

Fortran

real(8) function code(x)
    real(8), intent (in) :: x
    code = (x * 0.5d0) * x
end function

Java

public static double code(double x) {
	return (x * 0.5) * x;
}

Python

def code(x):
	return (x * 0.5) * x

Julia

function code(x)
	return Float64(Float64(x * 0.5) * x)
end

MATLAB

function tmp = code(x)
	tmp = (x * 0.5) * x;
end

Wolfram

code[x_] := N[(N[(x * 0.5), $MachinePrecision] * x), $MachinePrecision]

Reproduce

herbie shell --seed 2024005 
(FPCore (x)
  :name "System.Random.MWC.Distributions:blocks from mwc-random-0.13.3.2"
  :precision binary64
  (* (* x 0.5) x))

Please file a bug report with this information.

Backtrace

repr->cost: arity mismatch; the expected number of arguments does not match the given number expected: 2 given: 1		L	C
loop	.../private/map.rkt	54	19
f490	.../match/compiler.rkt	548	40
loop	.../private/map.rkt	54	19
f490	.../match/compiler.rkt	548	40
make-alt-table	/home/nightlies/herbie/platforms/src/core/alt-table.rkt	40	0
(unnamed)	/usr/share/racket/collects/racket/contract/private/arrow-val-first.rkt	486	18
initialize-alt-table!	/home/nightlies/herbie/platforms/src/mainloop.rkt	316	0
mutate!	/home/nightlies/herbie/platforms/src/mainloop.rkt	352	0
run-improve!	/home/nightlies/herbie/platforms/src/mainloop.rkt	338	0
get-alternatives/report	/home/nightlies/herbie/platforms/src/sandbox.rkt	169	0
(unnamed)	/home/nightlies/herbie/platforms/src/sandbox.rkt	262	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