Octave 3.8, jcobi/3

?

Percentage Accurate: 94.5% → 99.7%
Time: 23.6s
Precision: binary64
Cost: 2372

?

\[\alpha > -1 \land \beta > -1\]
\[ \begin{array}{c}[alpha, beta] = \mathsf{sort}([alpha, beta])\\ \end{array} \]
\[\frac{\frac{\frac{\left(\left(\alpha + \beta\right) + \beta \cdot \alpha\right) + 1}{\left(\alpha + \beta\right) + 2 \cdot 1}}{\left(\alpha + \beta\right) + 2 \cdot 1}}{\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) + 1} \]
\[\begin{array}{l} t_0 := 2 + \left(\beta + \alpha\right)\\ \mathbf{if}\;\beta \leq 10^{+114}:\\ \;\;\;\;\frac{\beta + 1}{\alpha + \left(\beta + 3\right)} \cdot \frac{1 + \alpha}{\beta \cdot \beta + \left(\alpha + 2\right) \cdot \left(\left(\alpha + 2\right) + \beta \cdot 2\right)}\\ \mathbf{else}:\\ \;\;\;\;\frac{\frac{\frac{1}{\beta} + \left(\left(\left(1 + \alpha\right) + \frac{\alpha}{\beta}\right) + \frac{-1 - \alpha}{\frac{\beta}{\alpha + 2}}\right)}{t_0}}{1 + t_0}\\ \end{array} \]
(FPCore (alpha beta)
 :precision binary64
 (/
  (/
   (/ (+ (+ (+ alpha beta) (* beta alpha)) 1.0) (+ (+ alpha beta) (* 2.0 1.0)))
   (+ (+ alpha beta) (* 2.0 1.0)))
  (+ (+ (+ alpha beta) (* 2.0 1.0)) 1.0)))
(FPCore (alpha beta)
 :precision binary64
 (let* ((t_0 (+ 2.0 (+ beta alpha))))
   (if (<= beta 1e+114)
     (*
      (/ (+ beta 1.0) (+ alpha (+ beta 3.0)))
      (/
       (+ 1.0 alpha)
       (+ (* beta beta) (* (+ alpha 2.0) (+ (+ alpha 2.0) (* beta 2.0))))))
     (/
      (/
       (+
        (/ 1.0 beta)
        (+
         (+ (+ 1.0 alpha) (/ alpha beta))
         (/ (- -1.0 alpha) (/ beta (+ alpha 2.0)))))
       t_0)
      (+ 1.0 t_0)))))
double code(double alpha, double beta) {
	return (((((alpha + beta) + (beta * alpha)) + 1.0) / ((alpha + beta) + (2.0 * 1.0))) / ((alpha + beta) + (2.0 * 1.0))) / (((alpha + beta) + (2.0 * 1.0)) + 1.0);
}
double code(double alpha, double beta) {
	double t_0 = 2.0 + (beta + alpha);
	double tmp;
	if (beta <= 1e+114) {
		tmp = ((beta + 1.0) / (alpha + (beta + 3.0))) * ((1.0 + alpha) / ((beta * beta) + ((alpha + 2.0) * ((alpha + 2.0) + (beta * 2.0)))));
	} else {
		tmp = (((1.0 / beta) + (((1.0 + alpha) + (alpha / beta)) + ((-1.0 - alpha) / (beta / (alpha + 2.0))))) / t_0) / (1.0 + t_0);
	}
	return tmp;
}
real(8) function code(alpha, beta)
    real(8), intent (in) :: alpha
    real(8), intent (in) :: beta
    code = (((((alpha + beta) + (beta * alpha)) + 1.0d0) / ((alpha + beta) + (2.0d0 * 1.0d0))) / ((alpha + beta) + (2.0d0 * 1.0d0))) / (((alpha + beta) + (2.0d0 * 1.0d0)) + 1.0d0)
end function
real(8) function code(alpha, beta)
    real(8), intent (in) :: alpha
    real(8), intent (in) :: beta
    real(8) :: t_0
    real(8) :: tmp
    t_0 = 2.0d0 + (beta + alpha)
    if (beta <= 1d+114) then
        tmp = ((beta + 1.0d0) / (alpha + (beta + 3.0d0))) * ((1.0d0 + alpha) / ((beta * beta) + ((alpha + 2.0d0) * ((alpha + 2.0d0) + (beta * 2.0d0)))))
    else
        tmp = (((1.0d0 / beta) + (((1.0d0 + alpha) + (alpha / beta)) + (((-1.0d0) - alpha) / (beta / (alpha + 2.0d0))))) / t_0) / (1.0d0 + t_0)
    end if
    code = tmp
end function
public static double code(double alpha, double beta) {
	return (((((alpha + beta) + (beta * alpha)) + 1.0) / ((alpha + beta) + (2.0 * 1.0))) / ((alpha + beta) + (2.0 * 1.0))) / (((alpha + beta) + (2.0 * 1.0)) + 1.0);
}
public static double code(double alpha, double beta) {
	double t_0 = 2.0 + (beta + alpha);
	double tmp;
	if (beta <= 1e+114) {
		tmp = ((beta + 1.0) / (alpha + (beta + 3.0))) * ((1.0 + alpha) / ((beta * beta) + ((alpha + 2.0) * ((alpha + 2.0) + (beta * 2.0)))));
	} else {
		tmp = (((1.0 / beta) + (((1.0 + alpha) + (alpha / beta)) + ((-1.0 - alpha) / (beta / (alpha + 2.0))))) / t_0) / (1.0 + t_0);
	}
	return tmp;
}
def code(alpha, beta):
	return (((((alpha + beta) + (beta * alpha)) + 1.0) / ((alpha + beta) + (2.0 * 1.0))) / ((alpha + beta) + (2.0 * 1.0))) / (((alpha + beta) + (2.0 * 1.0)) + 1.0)
def code(alpha, beta):
	t_0 = 2.0 + (beta + alpha)
	tmp = 0
	if beta <= 1e+114:
		tmp = ((beta + 1.0) / (alpha + (beta + 3.0))) * ((1.0 + alpha) / ((beta * beta) + ((alpha + 2.0) * ((alpha + 2.0) + (beta * 2.0)))))
	else:
		tmp = (((1.0 / beta) + (((1.0 + alpha) + (alpha / beta)) + ((-1.0 - alpha) / (beta / (alpha + 2.0))))) / t_0) / (1.0 + t_0)
	return tmp
function code(alpha, beta)
	return Float64(Float64(Float64(Float64(Float64(Float64(alpha + beta) + Float64(beta * alpha)) + 1.0) / Float64(Float64(alpha + beta) + Float64(2.0 * 1.0))) / Float64(Float64(alpha + beta) + Float64(2.0 * 1.0))) / Float64(Float64(Float64(alpha + beta) + Float64(2.0 * 1.0)) + 1.0))
end
function code(alpha, beta)
	t_0 = Float64(2.0 + Float64(beta + alpha))
	tmp = 0.0
	if (beta <= 1e+114)
		tmp = Float64(Float64(Float64(beta + 1.0) / Float64(alpha + Float64(beta + 3.0))) * Float64(Float64(1.0 + alpha) / Float64(Float64(beta * beta) + Float64(Float64(alpha + 2.0) * Float64(Float64(alpha + 2.0) + Float64(beta * 2.0))))));
	else
		tmp = Float64(Float64(Float64(Float64(1.0 / beta) + Float64(Float64(Float64(1.0 + alpha) + Float64(alpha / beta)) + Float64(Float64(-1.0 - alpha) / Float64(beta / Float64(alpha + 2.0))))) / t_0) / Float64(1.0 + t_0));
	end
	return tmp
end
function tmp = code(alpha, beta)
	tmp = (((((alpha + beta) + (beta * alpha)) + 1.0) / ((alpha + beta) + (2.0 * 1.0))) / ((alpha + beta) + (2.0 * 1.0))) / (((alpha + beta) + (2.0 * 1.0)) + 1.0);
end
function tmp_2 = code(alpha, beta)
	t_0 = 2.0 + (beta + alpha);
	tmp = 0.0;
	if (beta <= 1e+114)
		tmp = ((beta + 1.0) / (alpha + (beta + 3.0))) * ((1.0 + alpha) / ((beta * beta) + ((alpha + 2.0) * ((alpha + 2.0) + (beta * 2.0)))));
	else
		tmp = (((1.0 / beta) + (((1.0 + alpha) + (alpha / beta)) + ((-1.0 - alpha) / (beta / (alpha + 2.0))))) / t_0) / (1.0 + t_0);
	end
	tmp_2 = tmp;
end
code[alpha_, beta_] := N[(N[(N[(N[(N[(N[(alpha + beta), $MachinePrecision] + N[(beta * alpha), $MachinePrecision]), $MachinePrecision] + 1.0), $MachinePrecision] / N[(N[(alpha + beta), $MachinePrecision] + N[(2.0 * 1.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / N[(N[(alpha + beta), $MachinePrecision] + N[(2.0 * 1.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / N[(N[(N[(alpha + beta), $MachinePrecision] + N[(2.0 * 1.0), $MachinePrecision]), $MachinePrecision] + 1.0), $MachinePrecision]), $MachinePrecision]
code[alpha_, beta_] := Block[{t$95$0 = N[(2.0 + N[(beta + alpha), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[beta, 1e+114], N[(N[(N[(beta + 1.0), $MachinePrecision] / N[(alpha + N[(beta + 3.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[(N[(1.0 + alpha), $MachinePrecision] / N[(N[(beta * beta), $MachinePrecision] + N[(N[(alpha + 2.0), $MachinePrecision] * N[(N[(alpha + 2.0), $MachinePrecision] + N[(beta * 2.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(N[(N[(N[(1.0 / beta), $MachinePrecision] + N[(N[(N[(1.0 + alpha), $MachinePrecision] + N[(alpha / beta), $MachinePrecision]), $MachinePrecision] + N[(N[(-1.0 - alpha), $MachinePrecision] / N[(beta / N[(alpha + 2.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / t$95$0), $MachinePrecision] / N[(1.0 + t$95$0), $MachinePrecision]), $MachinePrecision]]]
\frac{\frac{\frac{\left(\left(\alpha + \beta\right) + \beta \cdot \alpha\right) + 1}{\left(\alpha + \beta\right) + 2 \cdot 1}}{\left(\alpha + \beta\right) + 2 \cdot 1}}{\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) + 1}
\begin{array}{l}
t_0 := 2 + \left(\beta + \alpha\right)\\
\mathbf{if}\;\beta \leq 10^{+114}:\\
\;\;\;\;\frac{\beta + 1}{\alpha + \left(\beta + 3\right)} \cdot \frac{1 + \alpha}{\beta \cdot \beta + \left(\alpha + 2\right) \cdot \left(\left(\alpha + 2\right) + \beta \cdot 2\right)}\\

\mathbf{else}:\\
\;\;\;\;\frac{\frac{\frac{1}{\beta} + \left(\left(\left(1 + \alpha\right) + \frac{\alpha}{\beta}\right) + \frac{-1 - \alpha}{\frac{\beta}{\alpha + 2}}\right)}{t_0}}{1 + t_0}\\


\end{array}

Local Percentage Accuracy vs ?

The average percentage accuracy by input value. Horizontal axis shows value of an input variable; the variable is choosen in the title. Vertical axis is accuracy; higher is better. Red represent the original program, while blue represents Herbie's suggestion. These can be toggled with buttons below the plot. The line is an average while dots represent individual samples.

Herbie found 19 alternatives:

AlternativeAccuracySpeedup

Accuracy vs Speed

The accuracy (vertical axis) and speed (horizontal axis) of each alternatives. Up and to the right is better. The red square shows the initial program, and each blue circle shows an alternative.The line shows the best available speed-accuracy tradeoffs.

Bogosity?

Bogosity

Try it out?

Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation?

  1. Split input into 2 regimes
  2. if beta < 1e114

    1. Initial program 99.8%

      \[\frac{\frac{\frac{\left(\left(\alpha + \beta\right) + \beta \cdot \alpha\right) + 1}{\left(\alpha + \beta\right) + 2 \cdot 1}}{\left(\alpha + \beta\right) + 2 \cdot 1}}{\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) + 1} \]
    2. Simplified99.8%

      \[\leadsto \color{blue}{\frac{\beta + 1}{\alpha + \left(\beta + 3\right)} \cdot \frac{\alpha + 1}{\left(\alpha + \left(\beta + 2\right)\right) \cdot \left(\alpha + \left(\beta + 2\right)\right)}} \]
      Step-by-step derivation

      [Start]99.8%

      \[ \frac{\frac{\frac{\left(\left(\alpha + \beta\right) + \beta \cdot \alpha\right) + 1}{\left(\alpha + \beta\right) + 2 \cdot 1}}{\left(\alpha + \beta\right) + 2 \cdot 1}}{\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) + 1} \]

      associate-/l/ [=>]99.8%

      \[ \frac{\color{blue}{\frac{\left(\left(\alpha + \beta\right) + \beta \cdot \alpha\right) + 1}{\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) \cdot \left(\left(\alpha + \beta\right) + 2 \cdot 1\right)}}}{\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) + 1} \]

      associate-/l/ [=>]95.4%

      \[ \color{blue}{\frac{\left(\left(\alpha + \beta\right) + \beta \cdot \alpha\right) + 1}{\left(\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) + 1\right) \cdot \left(\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) \cdot \left(\left(\alpha + \beta\right) + 2 \cdot 1\right)\right)}} \]

      associate-+l+ [=>]95.4%

      \[ \frac{\color{blue}{\left(\alpha + \left(\beta + \beta \cdot \alpha\right)\right)} + 1}{\left(\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) + 1\right) \cdot \left(\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) \cdot \left(\left(\alpha + \beta\right) + 2 \cdot 1\right)\right)} \]

      +-commutative [=>]95.4%

      \[ \frac{\left(\alpha + \color{blue}{\left(\beta \cdot \alpha + \beta\right)}\right) + 1}{\left(\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) + 1\right) \cdot \left(\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) \cdot \left(\left(\alpha + \beta\right) + 2 \cdot 1\right)\right)} \]

      associate-+r+ [=>]95.4%

      \[ \frac{\color{blue}{\left(\left(\alpha + \beta \cdot \alpha\right) + \beta\right)} + 1}{\left(\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) + 1\right) \cdot \left(\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) \cdot \left(\left(\alpha + \beta\right) + 2 \cdot 1\right)\right)} \]

      associate-+l+ [=>]95.4%

      \[ \frac{\color{blue}{\left(\alpha + \beta \cdot \alpha\right) + \left(\beta + 1\right)}}{\left(\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) + 1\right) \cdot \left(\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) \cdot \left(\left(\alpha + \beta\right) + 2 \cdot 1\right)\right)} \]

      distribute-rgt1-in [=>]95.4%

      \[ \frac{\color{blue}{\left(\beta + 1\right) \cdot \alpha} + \left(\beta + 1\right)}{\left(\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) + 1\right) \cdot \left(\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) \cdot \left(\left(\alpha + \beta\right) + 2 \cdot 1\right)\right)} \]

      *-rgt-identity [<=]95.4%

      \[ \frac{\left(\beta + 1\right) \cdot \alpha + \color{blue}{\left(\beta + 1\right) \cdot 1}}{\left(\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) + 1\right) \cdot \left(\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) \cdot \left(\left(\alpha + \beta\right) + 2 \cdot 1\right)\right)} \]

      distribute-lft-out [=>]95.4%

      \[ \frac{\color{blue}{\left(\beta + 1\right) \cdot \left(\alpha + 1\right)}}{\left(\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) + 1\right) \cdot \left(\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) \cdot \left(\left(\alpha + \beta\right) + 2 \cdot 1\right)\right)} \]

      +-commutative [=>]95.4%

      \[ \frac{\left(\beta + 1\right) \cdot \color{blue}{\left(1 + \alpha\right)}}{\left(\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) + 1\right) \cdot \left(\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) \cdot \left(\left(\alpha + \beta\right) + 2 \cdot 1\right)\right)} \]

      times-frac [=>]99.8%

      \[ \color{blue}{\frac{\beta + 1}{\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) + 1} \cdot \frac{1 + \alpha}{\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) \cdot \left(\left(\alpha + \beta\right) + 2 \cdot 1\right)}} \]
    3. Taylor expanded in beta around -inf 99.8%

      \[\leadsto \frac{\beta + 1}{\alpha + \left(\beta + 3\right)} \cdot \frac{\alpha + 1}{\color{blue}{{\beta}^{2} + \left(2 \cdot \left(\beta \cdot \left(2 + \alpha\right)\right) + {\left(2 + \alpha\right)}^{2}\right)}} \]
    4. Simplified99.8%

      \[\leadsto \frac{\beta + 1}{\alpha + \left(\beta + 3\right)} \cdot \frac{\alpha + 1}{\color{blue}{\beta \cdot \beta + \left(\alpha + 2\right) \cdot \left(\left(\alpha + 2\right) + 2 \cdot \beta\right)}} \]
      Step-by-step derivation

      [Start]99.8%

      \[ \frac{\beta + 1}{\alpha + \left(\beta + 3\right)} \cdot \frac{\alpha + 1}{{\beta}^{2} + \left(2 \cdot \left(\beta \cdot \left(2 + \alpha\right)\right) + {\left(2 + \alpha\right)}^{2}\right)} \]

      unpow2 [=>]99.8%

      \[ \frac{\beta + 1}{\alpha + \left(\beta + 3\right)} \cdot \frac{\alpha + 1}{\color{blue}{\beta \cdot \beta} + \left(2 \cdot \left(\beta \cdot \left(2 + \alpha\right)\right) + {\left(2 + \alpha\right)}^{2}\right)} \]

      +-commutative [=>]99.8%

      \[ \frac{\beta + 1}{\alpha + \left(\beta + 3\right)} \cdot \frac{\alpha + 1}{\beta \cdot \beta + \color{blue}{\left({\left(2 + \alpha\right)}^{2} + 2 \cdot \left(\beta \cdot \left(2 + \alpha\right)\right)\right)}} \]

      unpow2 [=>]99.8%

      \[ \frac{\beta + 1}{\alpha + \left(\beta + 3\right)} \cdot \frac{\alpha + 1}{\beta \cdot \beta + \left(\color{blue}{\left(2 + \alpha\right) \cdot \left(2 + \alpha\right)} + 2 \cdot \left(\beta \cdot \left(2 + \alpha\right)\right)\right)} \]

      associate-*r* [=>]99.8%

      \[ \frac{\beta + 1}{\alpha + \left(\beta + 3\right)} \cdot \frac{\alpha + 1}{\beta \cdot \beta + \left(\left(2 + \alpha\right) \cdot \left(2 + \alpha\right) + \color{blue}{\left(2 \cdot \beta\right) \cdot \left(2 + \alpha\right)}\right)} \]

      distribute-rgt-out [=>]99.8%

      \[ \frac{\beta + 1}{\alpha + \left(\beta + 3\right)} \cdot \frac{\alpha + 1}{\beta \cdot \beta + \color{blue}{\left(2 + \alpha\right) \cdot \left(\left(2 + \alpha\right) + 2 \cdot \beta\right)}} \]

      +-commutative [=>]99.8%

      \[ \frac{\beta + 1}{\alpha + \left(\beta + 3\right)} \cdot \frac{\alpha + 1}{\beta \cdot \beta + \color{blue}{\left(\alpha + 2\right)} \cdot \left(\left(2 + \alpha\right) + 2 \cdot \beta\right)} \]

      +-commutative [=>]99.8%

      \[ \frac{\beta + 1}{\alpha + \left(\beta + 3\right)} \cdot \frac{\alpha + 1}{\beta \cdot \beta + \left(\alpha + 2\right) \cdot \left(\color{blue}{\left(\alpha + 2\right)} + 2 \cdot \beta\right)} \]

    if 1e114 < beta

    1. Initial program 79.5%

      \[\frac{\frac{\frac{\left(\left(\alpha + \beta\right) + \beta \cdot \alpha\right) + 1}{\left(\alpha + \beta\right) + 2 \cdot 1}}{\left(\alpha + \beta\right) + 2 \cdot 1}}{\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) + 1} \]
    2. Taylor expanded in beta around inf 81.5%

      \[\leadsto \frac{\frac{\color{blue}{\left(\frac{1}{\beta} + \left(\frac{\alpha}{\beta} + \left(1 + \alpha\right)\right)\right) - \frac{\left(1 + \alpha\right) \cdot \left(2 + \alpha\right)}{\beta}}}{\left(\alpha + \beta\right) + 2 \cdot 1}}{\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) + 1} \]
    3. Simplified86.0%

      \[\leadsto \frac{\frac{\color{blue}{\frac{1}{\beta} + \left(\left(\left(1 + \alpha\right) + \frac{\alpha}{\beta}\right) - \frac{1 + \alpha}{\frac{\beta}{\alpha + 2}}\right)}}{\left(\alpha + \beta\right) + 2 \cdot 1}}{\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) + 1} \]
      Step-by-step derivation

      [Start]81.5%

      \[ \frac{\frac{\left(\frac{1}{\beta} + \left(\frac{\alpha}{\beta} + \left(1 + \alpha\right)\right)\right) - \frac{\left(1 + \alpha\right) \cdot \left(2 + \alpha\right)}{\beta}}{\left(\alpha + \beta\right) + 2 \cdot 1}}{\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) + 1} \]

      associate--l+ [=>]81.5%

      \[ \frac{\frac{\color{blue}{\frac{1}{\beta} + \left(\left(\frac{\alpha}{\beta} + \left(1 + \alpha\right)\right) - \frac{\left(1 + \alpha\right) \cdot \left(2 + \alpha\right)}{\beta}\right)}}{\left(\alpha + \beta\right) + 2 \cdot 1}}{\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) + 1} \]

      +-commutative [=>]81.5%

      \[ \frac{\frac{\frac{1}{\beta} + \left(\color{blue}{\left(\left(1 + \alpha\right) + \frac{\alpha}{\beta}\right)} - \frac{\left(1 + \alpha\right) \cdot \left(2 + \alpha\right)}{\beta}\right)}{\left(\alpha + \beta\right) + 2 \cdot 1}}{\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) + 1} \]

      associate-/l* [=>]86.0%

      \[ \frac{\frac{\frac{1}{\beta} + \left(\left(\left(1 + \alpha\right) + \frac{\alpha}{\beta}\right) - \color{blue}{\frac{1 + \alpha}{\frac{\beta}{2 + \alpha}}}\right)}{\left(\alpha + \beta\right) + 2 \cdot 1}}{\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) + 1} \]

      +-commutative [=>]86.0%

      \[ \frac{\frac{\frac{1}{\beta} + \left(\left(\left(1 + \alpha\right) + \frac{\alpha}{\beta}\right) - \frac{1 + \alpha}{\frac{\beta}{\color{blue}{\alpha + 2}}}\right)}{\left(\alpha + \beta\right) + 2 \cdot 1}}{\left(\left(\alpha + \beta\right) + 2 \cdot 1\right) + 1} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification97.2%

    \[\leadsto \begin{array}{l} \mathbf{if}\;\beta \leq 10^{+114}:\\ \;\;\;\;\frac{\beta + 1}{\alpha + \left(\beta + 3\right)} \cdot \frac{1 + \alpha}{\beta \cdot \beta + \left(\alpha + 2\right) \cdot \left(\left(\alpha + 2\right) + \beta \cdot 2\right)}\\ \mathbf{else}:\\ \;\;\;\;\frac{\frac{\frac{1}{\beta} + \left(\left(\left(1 + \alpha\right) + \frac{\alpha}{\beta}\right) + \frac{-1 - \alpha}{\frac{\beta}{\alpha + 2}}\right)}{2 + \left(\beta + \alpha\right)}}{1 + \left(2 + \left(\beta + \alpha\right)\right)}\\ \end{array} \]

Alternatives

Alternative 1
Accuracy99.7%
Cost2372
\[\begin{array}{l} t_0 := 2 + \left(\beta + \alpha\right)\\ \mathbf{if}\;\beta \leq 10^{+114}:\\ \;\;\;\;\frac{\beta + 1}{\alpha + \left(\beta + 3\right)} \cdot \frac{1 + \alpha}{\beta \cdot \beta + \left(\alpha + 2\right) \cdot \left(\left(\alpha + 2\right) + \beta \cdot 2\right)}\\ \mathbf{else}:\\ \;\;\;\;\frac{\frac{\frac{1}{\beta} + \left(\left(\left(1 + \alpha\right) + \frac{\alpha}{\beta}\right) + \frac{-1 - \alpha}{\frac{\beta}{\alpha + 2}}\right)}{t_0}}{1 + t_0}\\ \end{array} \]
Alternative 2
Accuracy99.6%
Cost1988
\[\begin{array}{l} \mathbf{if}\;\beta \leq 5 \cdot 10^{+112}:\\ \;\;\;\;\frac{\beta + 1}{\alpha + \left(\beta + 3\right)} \cdot \frac{1 + \alpha}{\beta \cdot \beta + \left(\alpha + 2\right) \cdot \left(\left(\alpha + 2\right) + \beta \cdot 2\right)}\\ \mathbf{else}:\\ \;\;\;\;\frac{\frac{1 + \alpha}{\beta + \left(\alpha + 2\right)}}{1 + \left(2 + \left(\beta + \alpha\right)\right)}\\ \end{array} \]
Alternative 3
Accuracy99.6%
Cost1988
\[\begin{array}{l} \mathbf{if}\;\beta \leq 5 \cdot 10^{+112}:\\ \;\;\;\;\frac{\beta + 1}{\alpha + \left(\beta + 3\right)} \cdot \frac{1 + \alpha}{\beta \cdot \beta + \left(\alpha + 2\right) \cdot \left(\left(\alpha + 2\right) + \beta \cdot 2\right)}\\ \mathbf{else}:\\ \;\;\;\;\frac{\frac{1}{\beta} + \left(\frac{\alpha}{\beta} - \frac{1 + \alpha}{\beta} \cdot \frac{\alpha + 2}{\beta}\right)}{1 + \left(2 + \left(\beta + \alpha\right)\right)}\\ \end{array} \]
Alternative 4
Accuracy99.5%
Cost1732
\[\begin{array}{l} t_0 := \alpha + \left(\beta + 2\right)\\ \mathbf{if}\;\beta \leq 5 \cdot 10^{+90}:\\ \;\;\;\;\frac{\frac{-1 - \alpha}{t_0}}{\left(\alpha + \left(\beta + 3\right)\right) \cdot t_0} \cdot \left(-1 - \beta\right)\\ \mathbf{else}:\\ \;\;\;\;\frac{\frac{1 + \alpha}{\beta + \left(\alpha + 2\right)}}{1 + \left(2 + \left(\beta + \alpha\right)\right)}\\ \end{array} \]
Alternative 5
Accuracy99.6%
Cost1732
\[\begin{array}{l} t_0 := 2 + \left(\beta + \alpha\right)\\ \mathbf{if}\;\beta \leq 10^{+114}:\\ \;\;\;\;\frac{\beta + 1}{t_0} \cdot \frac{1 + \alpha}{\left(\alpha + \left(\beta + 3\right)\right) \cdot t_0}\\ \mathbf{else}:\\ \;\;\;\;\frac{\frac{1 + \alpha}{\beta + \left(\alpha + 2\right)}}{1 + t_0}\\ \end{array} \]
Alternative 6
Accuracy98.6%
Cost1220
\[\begin{array}{l} \mathbf{if}\;\beta \leq 2.9 \cdot 10^{+15}:\\ \;\;\;\;\frac{\beta + 1}{\left(\beta + 2\right) \cdot \left(\beta \cdot \left(\beta + 5\right) + 6\right)}\\ \mathbf{else}:\\ \;\;\;\;\frac{\frac{1 + \alpha}{\beta + \left(\alpha + 2\right)}}{1 + \left(2 + \left(\beta + \alpha\right)\right)}\\ \end{array} \]
Alternative 7
Accuracy62.8%
Cost1092
\[\begin{array}{l} t_0 := \beta + \left(\alpha + 3\right)\\ \mathbf{if}\;\beta \leq 5 \cdot 10^{+112}:\\ \;\;\;\;\frac{1 + \alpha}{\left(\beta + \left(\alpha + 2\right)\right) \cdot t_0}\\ \mathbf{else}:\\ \;\;\;\;\frac{\frac{1 + \alpha}{\beta}}{t_0}\\ \end{array} \]
Alternative 8
Accuracy98.6%
Cost1092
\[\begin{array}{l} \mathbf{if}\;\beta \leq 10^{+16}:\\ \;\;\;\;\frac{\beta + 1}{\left(\beta + 2\right) \cdot \left(\beta \cdot \left(\beta + 5\right) + 6\right)}\\ \mathbf{else}:\\ \;\;\;\;\frac{\frac{1 + \alpha}{\beta}}{\beta + \left(\alpha + 3\right)}\\ \end{array} \]
Alternative 9
Accuracy98.6%
Cost1092
\[\begin{array}{l} \mathbf{if}\;\beta \leq 1.4 \cdot 10^{+16}:\\ \;\;\;\;\frac{\beta + 1}{\left(\beta + 2\right) \cdot \left(\beta \cdot \left(\beta + 5\right) + 6\right)}\\ \mathbf{else}:\\ \;\;\;\;\frac{\frac{1 + \alpha}{2 + \left(\beta + \alpha\right)}}{\beta + 1}\\ \end{array} \]
Alternative 10
Accuracy62.6%
Cost836
\[\begin{array}{l} \mathbf{if}\;\beta \leq 6 \cdot 10^{+41}:\\ \;\;\;\;\frac{1}{\left(\beta + 3\right) \cdot \left(\beta + 2\right)}\\ \mathbf{else}:\\ \;\;\;\;\frac{\frac{1 + \alpha}{\beta}}{\beta + \left(\alpha + 3\right)}\\ \end{array} \]
Alternative 11
Accuracy62.6%
Cost708
\[\begin{array}{l} \mathbf{if}\;\beta \leq 2 \cdot 10^{+41}:\\ \;\;\;\;\frac{1}{\left(\beta + 3\right) \cdot \left(\beta + 2\right)}\\ \mathbf{else}:\\ \;\;\;\;\frac{\frac{1 + \alpha}{\beta}}{\beta + 1}\\ \end{array} \]
Alternative 12
Accuracy57.2%
Cost576
\[\frac{1}{\left(\beta + 3\right) \cdot \left(\beta + 2\right)} \]
Alternative 13
Accuracy50.9%
Cost448
\[\frac{1}{\beta \cdot \left(\beta + 3\right)} \]
Alternative 14
Accuracy53.6%
Cost448
\[\frac{1 + \alpha}{\beta \cdot \beta} \]
Alternative 15
Accuracy34.3%
Cost320
\[\frac{0.5}{\beta \cdot \beta} \]
Alternative 16
Accuracy50.7%
Cost320
\[\frac{1}{\beta \cdot \beta} \]
Alternative 17
Accuracy51.2%
Cost320
\[\frac{\frac{1}{\beta}}{\beta} \]
Alternative 18
Accuracy6.0%
Cost192
\[\frac{1}{\beta} \]
Alternative 19
Accuracy2.2%
Cost64
\[-0.125 \]

Reproduce?

herbie shell --seed 2023271 
(FPCore (alpha beta)
  :name "Octave 3.8, jcobi/3"
  :precision binary64
  :pre (and (> alpha -1.0) (> beta -1.0))
  (/ (/ (/ (+ (+ (+ alpha beta) (* beta alpha)) 1.0) (+ (+ alpha beta) (* 2.0 1.0))) (+ (+ alpha beta) (* 2.0 1.0))) (+ (+ (+ alpha beta) (* 2.0 1.0)) 1.0)))