Exception for Henrywood and Agarwal, Equation (9a)

Math

\[w0 \cdot \sqrt{1 - {\left(\frac{M \cdot D}{2 \cdot d}\right)}^{2} \cdot \frac{h}{\ell}} \]

FPCore

(FPCore (w0 M D h l d)
 :precision binary64
 (* w0 (sqrt (- 1.0 (* (pow (/ (* M D) (* 2.0 d)) 2.0) (/ h l))))))

C

double code(double w0, double M, double D, double h, double l, double d) {
	return w0 * sqrt((1.0 - (pow(((M * D) / (2.0 * d)), 2.0) * (h / l))));
}

Fortran

real(8) function code(w0, m, d, h, l, d_1)
    real(8), intent (in) :: w0
    real(8), intent (in) :: m
    real(8), intent (in) :: d
    real(8), intent (in) :: h
    real(8), intent (in) :: l
    real(8), intent (in) :: d_1
    code = w0 * sqrt((1.0d0 - ((((m * d) / (2.0d0 * d_1)) ** 2.0d0) * (h / l))))
end function

Java

public static double code(double w0, double M, double D, double h, double l, double d) {
	return w0 * Math.sqrt((1.0 - (Math.pow(((M * D) / (2.0 * d)), 2.0) * (h / l))));
}

Python

def code(w0, M, D, h, l, d):
	return w0 * math.sqrt((1.0 - (math.pow(((M * D) / (2.0 * d)), 2.0) * (h / l))))

Julia

function code(w0, M, D, h, l, d)
	return Float64(w0 * sqrt(Float64(1.0 - Float64((Float64(Float64(M * D) / Float64(2.0 * d)) ^ 2.0) * Float64(h / l)))))
end

MATLAB

function tmp = code(w0, M, D, h, l, d)
	tmp = w0 * sqrt((1.0 - ((((M * D) / (2.0 * d)) ^ 2.0) * (h / l))));
end

Wolfram

code[w0_, M_, D_, h_, l_, d_] := N[(w0 * N[Sqrt[N[(1.0 - N[(N[Power[N[(N[(M * D), $MachinePrecision] / N[(2.0 * d), $MachinePrecision]), $MachinePrecision], 2.0], $MachinePrecision] * N[(h / l), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2022193 
(FPCore (w0 M D h l d)
  :name "Henrywood and Agarwal, Equation (9a)"
  :precision binary64
  (* w0 (sqrt (- 1.0 (* (pow (/ (* M D) (* 2.0 d)) 2.0) (/ h l))))))

Backtrace

hash-ref: no value found for key key: '~		L	C
(unnamed)	/data/pavpan/nightlies/herbie/ruler-arith/src/syntax/syntax.rkt	202	2
f337	.../match/compiler.rkt	548	40
f337	.../match/compiler.rkt	548	40
expand-parametric	/data/pavpan/nightlies/herbie/ruler-arith/src/syntax/sugar.rkt	62	0
(unnamed)	/data/pavpan/nightlies/herbie/ruler-arith/src/syntax/rules.rkt	175	8
generate-rules-for	/data/pavpan/nightlies/herbie/ruler-arith/src/syntax/rules.rkt	160	0
generate-missing-rules	/data/pavpan/nightlies/herbie/ruler-arith/src/syntax/rules.rkt	186	0
(unnamed)	/data/pavpan/nightlies/herbie/ruler-arith/src/syntax/rules.rkt	30	26
get-swaps	/data/pavpan/nightlies/herbie/ruler-arith/src/symmetry.rkt	6	0
connected-components	/data/pavpan/nightlies/herbie/ruler-arith/src/symmetry.rkt	17	0
run-improve!	/data/pavpan/nightlies/herbie/ruler-arith/src/mainloop.rkt	317	0
(unnamed)	/data/pavpan/nightlies/herbie/ruler-arith/src/sandbox.rkt	56	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