Numeric.SpecFunctions:invIncompleteGamma from math-functions-0.1.5.2, D

Percentage Accurate: 99.7% → 99.7%
Time: 19.9s
Alternatives: 15
Speedup: 1.0×

Specification

?
\[\begin{array}{l} \\ \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{3 \cdot \sqrt{x}} \end{array} \]
(FPCore (x y)
 :precision binary64
 (- (- 1.0 (/ 1.0 (* x 9.0))) (/ y (* 3.0 (sqrt x)))))
double code(double x, double y) {
	return (1.0 - (1.0 / (x * 9.0))) - (y / (3.0 * sqrt(x)));
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = (1.0d0 - (1.0d0 / (x * 9.0d0))) - (y / (3.0d0 * sqrt(x)))
end function
public static double code(double x, double y) {
	return (1.0 - (1.0 / (x * 9.0))) - (y / (3.0 * Math.sqrt(x)));
}
def code(x, y):
	return (1.0 - (1.0 / (x * 9.0))) - (y / (3.0 * math.sqrt(x)))
function code(x, y)
	return Float64(Float64(1.0 - Float64(1.0 / Float64(x * 9.0))) - Float64(y / Float64(3.0 * sqrt(x))))
end
function tmp = code(x, y)
	tmp = (1.0 - (1.0 / (x * 9.0))) - (y / (3.0 * sqrt(x)));
end
code[x_, y_] := N[(N[(1.0 - N[(1.0 / N[(x * 9.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - N[(y / N[(3.0 * N[Sqrt[x], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{3 \cdot \sqrt{x}}
\end{array}

Sampling outcomes in binary64 precision:

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.

Accuracy vs Speed?

Herbie found 15 alternatives:

AlternativeAccuracySpeedup
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.

Initial Program: 99.7% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{3 \cdot \sqrt{x}} \end{array} \]
(FPCore (x y)
 :precision binary64
 (- (- 1.0 (/ 1.0 (* x 9.0))) (/ y (* 3.0 (sqrt x)))))
double code(double x, double y) {
	return (1.0 - (1.0 / (x * 9.0))) - (y / (3.0 * sqrt(x)));
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = (1.0d0 - (1.0d0 / (x * 9.0d0))) - (y / (3.0d0 * sqrt(x)))
end function
public static double code(double x, double y) {
	return (1.0 - (1.0 / (x * 9.0))) - (y / (3.0 * Math.sqrt(x)));
}
def code(x, y):
	return (1.0 - (1.0 / (x * 9.0))) - (y / (3.0 * math.sqrt(x)))
function code(x, y)
	return Float64(Float64(1.0 - Float64(1.0 / Float64(x * 9.0))) - Float64(y / Float64(3.0 * sqrt(x))))
end
function tmp = code(x, y)
	tmp = (1.0 - (1.0 / (x * 9.0))) - (y / (3.0 * sqrt(x)));
end
code[x_, y_] := N[(N[(1.0 - N[(1.0 / N[(x * 9.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - N[(y / N[(3.0 * N[Sqrt[x], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{3 \cdot \sqrt{x}}
\end{array}

Alternative 1: 99.7% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \left(1 + \frac{-1}{x \cdot 9}\right) - \frac{y}{\sqrt{x \cdot 9}} \end{array} \]
(FPCore (x y)
 :precision binary64
 (- (+ 1.0 (/ -1.0 (* x 9.0))) (/ y (sqrt (* x 9.0)))))
double code(double x, double y) {
	return (1.0 + (-1.0 / (x * 9.0))) - (y / sqrt((x * 9.0)));
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = (1.0d0 + ((-1.0d0) / (x * 9.0d0))) - (y / sqrt((x * 9.0d0)))
end function
public static double code(double x, double y) {
	return (1.0 + (-1.0 / (x * 9.0))) - (y / Math.sqrt((x * 9.0)));
}
def code(x, y):
	return (1.0 + (-1.0 / (x * 9.0))) - (y / math.sqrt((x * 9.0)))
function code(x, y)
	return Float64(Float64(1.0 + Float64(-1.0 / Float64(x * 9.0))) - Float64(y / sqrt(Float64(x * 9.0))))
end
function tmp = code(x, y)
	tmp = (1.0 + (-1.0 / (x * 9.0))) - (y / sqrt((x * 9.0)));
end
code[x_, y_] := N[(N[(1.0 + N[(-1.0 / N[(x * 9.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - N[(y / N[Sqrt[N[(x * 9.0), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\left(1 + \frac{-1}{x \cdot 9}\right) - \frac{y}{\sqrt{x \cdot 9}}
\end{array}
Derivation
  1. Initial program 99.7%

    \[\left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{3 \cdot \sqrt{x}} \]
  2. Add Preprocessing
  3. Step-by-step derivation
    1. *-commutative99.7%

      \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{\sqrt{x} \cdot 3}} \]
    2. metadata-eval99.7%

      \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\sqrt{x} \cdot \color{blue}{\sqrt{9}}} \]
    3. sqrt-prod99.7%

      \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{\sqrt{x \cdot 9}}} \]
    4. pow1/299.7%

      \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{{\left(x \cdot 9\right)}^{0.5}}} \]
  4. Applied egg-rr99.7%

    \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{{\left(x \cdot 9\right)}^{0.5}}} \]
  5. Step-by-step derivation
    1. unpow1/299.7%

      \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{\sqrt{x \cdot 9}}} \]
  6. Simplified99.7%

    \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{\sqrt{x \cdot 9}}} \]
  7. Final simplification99.7%

    \[\leadsto \left(1 + \frac{-1}{x \cdot 9}\right) - \frac{y}{\sqrt{x \cdot 9}} \]
  8. Add Preprocessing

Alternative 2: 94.7% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;y \leq -2.9 \cdot 10^{+84} \lor \neg \left(y \leq 5.2 \cdot 10^{+44}\right):\\ \;\;\;\;1 + -0.3333333333333333 \cdot \frac{y}{\sqrt{x}}\\ \mathbf{else}:\\ \;\;\;\;1 - {\left(x \cdot 9\right)}^{-1}\\ \end{array} \end{array} \]
(FPCore (x y)
 :precision binary64
 (if (or (<= y -2.9e+84) (not (<= y 5.2e+44)))
   (+ 1.0 (* -0.3333333333333333 (/ y (sqrt x))))
   (- 1.0 (pow (* x 9.0) -1.0))))
double code(double x, double y) {
	double tmp;
	if ((y <= -2.9e+84) || !(y <= 5.2e+44)) {
		tmp = 1.0 + (-0.3333333333333333 * (y / sqrt(x)));
	} else {
		tmp = 1.0 - pow((x * 9.0), -1.0);
	}
	return tmp;
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8) :: tmp
    if ((y <= (-2.9d+84)) .or. (.not. (y <= 5.2d+44))) then
        tmp = 1.0d0 + ((-0.3333333333333333d0) * (y / sqrt(x)))
    else
        tmp = 1.0d0 - ((x * 9.0d0) ** (-1.0d0))
    end if
    code = tmp
end function
public static double code(double x, double y) {
	double tmp;
	if ((y <= -2.9e+84) || !(y <= 5.2e+44)) {
		tmp = 1.0 + (-0.3333333333333333 * (y / Math.sqrt(x)));
	} else {
		tmp = 1.0 - Math.pow((x * 9.0), -1.0);
	}
	return tmp;
}
def code(x, y):
	tmp = 0
	if (y <= -2.9e+84) or not (y <= 5.2e+44):
		tmp = 1.0 + (-0.3333333333333333 * (y / math.sqrt(x)))
	else:
		tmp = 1.0 - math.pow((x * 9.0), -1.0)
	return tmp
function code(x, y)
	tmp = 0.0
	if ((y <= -2.9e+84) || !(y <= 5.2e+44))
		tmp = Float64(1.0 + Float64(-0.3333333333333333 * Float64(y / sqrt(x))));
	else
		tmp = Float64(1.0 - (Float64(x * 9.0) ^ -1.0));
	end
	return tmp
end
function tmp_2 = code(x, y)
	tmp = 0.0;
	if ((y <= -2.9e+84) || ~((y <= 5.2e+44)))
		tmp = 1.0 + (-0.3333333333333333 * (y / sqrt(x)));
	else
		tmp = 1.0 - ((x * 9.0) ^ -1.0);
	end
	tmp_2 = tmp;
end
code[x_, y_] := If[Or[LessEqual[y, -2.9e+84], N[Not[LessEqual[y, 5.2e+44]], $MachinePrecision]], N[(1.0 + N[(-0.3333333333333333 * N[(y / N[Sqrt[x], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(1.0 - N[Power[N[(x * 9.0), $MachinePrecision], -1.0], $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;y \leq -2.9 \cdot 10^{+84} \lor \neg \left(y \leq 5.2 \cdot 10^{+44}\right):\\
\;\;\;\;1 + -0.3333333333333333 \cdot \frac{y}{\sqrt{x}}\\

\mathbf{else}:\\
\;\;\;\;1 - {\left(x \cdot 9\right)}^{-1}\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if y < -2.89999999999999989e84 or 5.1999999999999998e44 < y

    1. Initial program 99.6%

      \[\left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{3 \cdot \sqrt{x}} \]
    2. Step-by-step derivation
      1. sub-neg99.6%

        \[\leadsto \color{blue}{\left(1 - \frac{1}{x \cdot 9}\right) + \left(-\frac{y}{3 \cdot \sqrt{x}}\right)} \]
      2. *-commutative99.6%

        \[\leadsto \left(1 - \frac{1}{\color{blue}{9 \cdot x}}\right) + \left(-\frac{y}{3 \cdot \sqrt{x}}\right) \]
      3. associate-/r*99.6%

        \[\leadsto \left(1 - \color{blue}{\frac{\frac{1}{9}}{x}}\right) + \left(-\frac{y}{3 \cdot \sqrt{x}}\right) \]
      4. metadata-eval99.6%

        \[\leadsto \left(1 - \frac{\color{blue}{0.1111111111111111}}{x}\right) + \left(-\frac{y}{3 \cdot \sqrt{x}}\right) \]
      5. distribute-frac-neg99.6%

        \[\leadsto \left(1 - \frac{0.1111111111111111}{x}\right) + \color{blue}{\frac{-y}{3 \cdot \sqrt{x}}} \]
      6. neg-mul-199.6%

        \[\leadsto \left(1 - \frac{0.1111111111111111}{x}\right) + \frac{\color{blue}{-1 \cdot y}}{3 \cdot \sqrt{x}} \]
      7. times-frac99.4%

        \[\leadsto \left(1 - \frac{0.1111111111111111}{x}\right) + \color{blue}{\frac{-1}{3} \cdot \frac{y}{\sqrt{x}}} \]
      8. metadata-eval99.4%

        \[\leadsto \left(1 - \frac{0.1111111111111111}{x}\right) + \color{blue}{-0.3333333333333333} \cdot \frac{y}{\sqrt{x}} \]
    3. Simplified99.4%

      \[\leadsto \color{blue}{\left(1 - \frac{0.1111111111111111}{x}\right) + -0.3333333333333333 \cdot \frac{y}{\sqrt{x}}} \]
    4. Add Preprocessing
    5. Taylor expanded in x around inf 95.1%

      \[\leadsto \color{blue}{1} + -0.3333333333333333 \cdot \frac{y}{\sqrt{x}} \]

    if -2.89999999999999989e84 < y < 5.1999999999999998e44

    1. Initial program 99.8%

      \[\left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{3 \cdot \sqrt{x}} \]
    2. Step-by-step derivation
      1. associate--l-99.8%

        \[\leadsto \color{blue}{1 - \left(\frac{1}{x \cdot 9} + \frac{y}{3 \cdot \sqrt{x}}\right)} \]
      2. sub-neg99.8%

        \[\leadsto \color{blue}{1 + \left(-\left(\frac{1}{x \cdot 9} + \frac{y}{3 \cdot \sqrt{x}}\right)\right)} \]
      3. +-commutative99.8%

        \[\leadsto 1 + \left(-\color{blue}{\left(\frac{y}{3 \cdot \sqrt{x}} + \frac{1}{x \cdot 9}\right)}\right) \]
      4. distribute-neg-in99.8%

        \[\leadsto 1 + \color{blue}{\left(\left(-\frac{y}{3 \cdot \sqrt{x}}\right) + \left(-\frac{1}{x \cdot 9}\right)\right)} \]
      5. distribute-frac-neg99.8%

        \[\leadsto 1 + \left(\color{blue}{\frac{-y}{3 \cdot \sqrt{x}}} + \left(-\frac{1}{x \cdot 9}\right)\right) \]
      6. sub-neg99.8%

        \[\leadsto 1 + \color{blue}{\left(\frac{-y}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right)} \]
      7. neg-mul-199.8%

        \[\leadsto 1 + \left(\frac{\color{blue}{-1 \cdot y}}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right) \]
      8. *-commutative99.8%

        \[\leadsto 1 + \left(\frac{\color{blue}{y \cdot -1}}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right) \]
      9. associate-/l*99.8%

        \[\leadsto 1 + \left(\color{blue}{y \cdot \frac{-1}{3 \cdot \sqrt{x}}} - \frac{1}{x \cdot 9}\right) \]
      10. fma-neg99.8%

        \[\leadsto 1 + \color{blue}{\mathsf{fma}\left(y, \frac{-1}{3 \cdot \sqrt{x}}, -\frac{1}{x \cdot 9}\right)} \]
      11. associate-/r*99.8%

        \[\leadsto 1 + \mathsf{fma}\left(y, \color{blue}{\frac{\frac{-1}{3}}{\sqrt{x}}}, -\frac{1}{x \cdot 9}\right) \]
      12. metadata-eval99.8%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{\color{blue}{-0.3333333333333333}}{\sqrt{x}}, -\frac{1}{x \cdot 9}\right) \]
      13. *-commutative99.8%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, -\frac{1}{\color{blue}{9 \cdot x}}\right) \]
      14. associate-/r*99.7%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, -\color{blue}{\frac{\frac{1}{9}}{x}}\right) \]
      15. distribute-neg-frac99.7%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \color{blue}{\frac{-\frac{1}{9}}{x}}\right) \]
      16. metadata-eval99.7%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{-\color{blue}{0.1111111111111111}}{x}\right) \]
      17. metadata-eval99.7%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{\color{blue}{-0.1111111111111111}}{x}\right) \]
    3. Simplified99.7%

      \[\leadsto \color{blue}{1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{-0.1111111111111111}{x}\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around 0 94.2%

      \[\leadsto 1 + \color{blue}{\frac{-0.1111111111111111}{x}} \]
    6. Step-by-step derivation
      1. div-inv94.2%

        \[\leadsto 1 + \color{blue}{-0.1111111111111111 \cdot \frac{1}{x}} \]
      2. metadata-eval94.2%

        \[\leadsto 1 + \color{blue}{\left(-0.1111111111111111\right)} \cdot \frac{1}{x} \]
      3. cancel-sign-sub-inv94.2%

        \[\leadsto \color{blue}{1 - 0.1111111111111111 \cdot \frac{1}{x}} \]
      4. *-commutative94.2%

        \[\leadsto 1 - \color{blue}{\frac{1}{x} \cdot 0.1111111111111111} \]
      5. metadata-eval94.2%

        \[\leadsto 1 - \frac{1}{x} \cdot \color{blue}{\frac{1}{9}} \]
      6. div-inv94.3%

        \[\leadsto 1 - \color{blue}{\frac{\frac{1}{x}}{9}} \]
      7. associate-/r*94.3%

        \[\leadsto 1 - \color{blue}{\frac{1}{x \cdot 9}} \]
      8. add-sqr-sqrt94.0%

        \[\leadsto 1 - \color{blue}{\sqrt{\frac{1}{x \cdot 9}} \cdot \sqrt{\frac{1}{x \cdot 9}}} \]
      9. sqrt-unprod66.3%

        \[\leadsto 1 - \color{blue}{\sqrt{\frac{1}{x \cdot 9} \cdot \frac{1}{x \cdot 9}}} \]
      10. *-commutative66.3%

        \[\leadsto 1 - \sqrt{\frac{1}{\color{blue}{9 \cdot x}} \cdot \frac{1}{x \cdot 9}} \]
      11. associate-/r*66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{\frac{1}{9}}{x}} \cdot \frac{1}{x \cdot 9}} \]
      12. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{\color{blue}{0.1111111111111111}}{x} \cdot \frac{1}{x \cdot 9}} \]
      13. *-commutative66.3%

        \[\leadsto 1 - \sqrt{\frac{0.1111111111111111}{x} \cdot \frac{1}{\color{blue}{9 \cdot x}}} \]
      14. associate-/r*66.3%

        \[\leadsto 1 - \sqrt{\frac{0.1111111111111111}{x} \cdot \color{blue}{\frac{\frac{1}{9}}{x}}} \]
      15. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{0.1111111111111111}{x} \cdot \frac{\color{blue}{0.1111111111111111}}{x}} \]
      16. frac-times66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{0.1111111111111111 \cdot 0.1111111111111111}{x \cdot x}}} \]
      17. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{\color{blue}{0.012345679012345678}}{x \cdot x}} \]
      18. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{\color{blue}{-0.1111111111111111 \cdot -0.1111111111111111}}{x \cdot x}} \]
      19. frac-times66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{-0.1111111111111111}{x} \cdot \frac{-0.1111111111111111}{x}}} \]
      20. sqrt-unprod0.0%

        \[\leadsto 1 - \color{blue}{\sqrt{\frac{-0.1111111111111111}{x}} \cdot \sqrt{\frac{-0.1111111111111111}{x}}} \]
      21. add-sqr-sqrt40.4%

        \[\leadsto 1 - \color{blue}{\frac{-0.1111111111111111}{x}} \]
    7. Applied egg-rr40.4%

      \[\leadsto \color{blue}{1 - \frac{-0.1111111111111111}{x}} \]
    8. Step-by-step derivation
      1. add-sqr-sqrt0.0%

        \[\leadsto 1 - \color{blue}{\sqrt{\frac{-0.1111111111111111}{x}} \cdot \sqrt{\frac{-0.1111111111111111}{x}}} \]
      2. sqrt-unprod66.3%

        \[\leadsto 1 - \color{blue}{\sqrt{\frac{-0.1111111111111111}{x} \cdot \frac{-0.1111111111111111}{x}}} \]
      3. frac-times66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{-0.1111111111111111 \cdot -0.1111111111111111}{x \cdot x}}} \]
      4. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{\color{blue}{0.012345679012345678}}{x \cdot x}} \]
      5. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{\color{blue}{0.1111111111111111 \cdot 0.1111111111111111}}{x \cdot x}} \]
      6. frac-times66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{0.1111111111111111}{x} \cdot \frac{0.1111111111111111}{x}}} \]
      7. clear-num66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{1}{\frac{x}{0.1111111111111111}}} \cdot \frac{0.1111111111111111}{x}} \]
      8. clear-num66.3%

        \[\leadsto 1 - \sqrt{\frac{1}{\frac{x}{0.1111111111111111}} \cdot \color{blue}{\frac{1}{\frac{x}{0.1111111111111111}}}} \]
      9. frac-times66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{1 \cdot 1}{\frac{x}{0.1111111111111111} \cdot \frac{x}{0.1111111111111111}}}} \]
      10. div-inv66.3%

        \[\leadsto 1 - \sqrt{\frac{1 \cdot 1}{\color{blue}{\left(x \cdot \frac{1}{0.1111111111111111}\right)} \cdot \frac{x}{0.1111111111111111}}} \]
      11. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{1 \cdot 1}{\left(x \cdot \color{blue}{9}\right) \cdot \frac{x}{0.1111111111111111}}} \]
      12. div-inv66.3%

        \[\leadsto 1 - \sqrt{\frac{1 \cdot 1}{\left(x \cdot 9\right) \cdot \color{blue}{\left(x \cdot \frac{1}{0.1111111111111111}\right)}}} \]
      13. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{1 \cdot 1}{\left(x \cdot 9\right) \cdot \left(x \cdot \color{blue}{9}\right)}} \]
      14. frac-times66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{1}{x \cdot 9} \cdot \frac{1}{x \cdot 9}}} \]
      15. sqrt-unprod94.0%

        \[\leadsto 1 - \color{blue}{\sqrt{\frac{1}{x \cdot 9}} \cdot \sqrt{\frac{1}{x \cdot 9}}} \]
      16. add-sqr-sqrt94.3%

        \[\leadsto 1 - \color{blue}{\frac{1}{x \cdot 9}} \]
      17. inv-pow94.3%

        \[\leadsto 1 - \color{blue}{{\left(x \cdot 9\right)}^{-1}} \]
    9. Applied egg-rr94.3%

      \[\leadsto 1 - \color{blue}{{\left(x \cdot 9\right)}^{-1}} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification94.6%

    \[\leadsto \begin{array}{l} \mathbf{if}\;y \leq -2.9 \cdot 10^{+84} \lor \neg \left(y \leq 5.2 \cdot 10^{+44}\right):\\ \;\;\;\;1 + -0.3333333333333333 \cdot \frac{y}{\sqrt{x}}\\ \mathbf{else}:\\ \;\;\;\;1 - {\left(x \cdot 9\right)}^{-1}\\ \end{array} \]
  5. Add Preprocessing

Alternative 3: 94.9% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;y \leq -2.9 \cdot 10^{+84} \lor \neg \left(y \leq 1.9 \cdot 10^{+41}\right):\\ \;\;\;\;1 + \frac{\frac{y}{-3}}{\sqrt{x}}\\ \mathbf{else}:\\ \;\;\;\;1 - {\left(x \cdot 9\right)}^{-1}\\ \end{array} \end{array} \]
(FPCore (x y)
 :precision binary64
 (if (or (<= y -2.9e+84) (not (<= y 1.9e+41)))
   (+ 1.0 (/ (/ y -3.0) (sqrt x)))
   (- 1.0 (pow (* x 9.0) -1.0))))
double code(double x, double y) {
	double tmp;
	if ((y <= -2.9e+84) || !(y <= 1.9e+41)) {
		tmp = 1.0 + ((y / -3.0) / sqrt(x));
	} else {
		tmp = 1.0 - pow((x * 9.0), -1.0);
	}
	return tmp;
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8) :: tmp
    if ((y <= (-2.9d+84)) .or. (.not. (y <= 1.9d+41))) then
        tmp = 1.0d0 + ((y / (-3.0d0)) / sqrt(x))
    else
        tmp = 1.0d0 - ((x * 9.0d0) ** (-1.0d0))
    end if
    code = tmp
end function
public static double code(double x, double y) {
	double tmp;
	if ((y <= -2.9e+84) || !(y <= 1.9e+41)) {
		tmp = 1.0 + ((y / -3.0) / Math.sqrt(x));
	} else {
		tmp = 1.0 - Math.pow((x * 9.0), -1.0);
	}
	return tmp;
}
def code(x, y):
	tmp = 0
	if (y <= -2.9e+84) or not (y <= 1.9e+41):
		tmp = 1.0 + ((y / -3.0) / math.sqrt(x))
	else:
		tmp = 1.0 - math.pow((x * 9.0), -1.0)
	return tmp
function code(x, y)
	tmp = 0.0
	if ((y <= -2.9e+84) || !(y <= 1.9e+41))
		tmp = Float64(1.0 + Float64(Float64(y / -3.0) / sqrt(x)));
	else
		tmp = Float64(1.0 - (Float64(x * 9.0) ^ -1.0));
	end
	return tmp
end
function tmp_2 = code(x, y)
	tmp = 0.0;
	if ((y <= -2.9e+84) || ~((y <= 1.9e+41)))
		tmp = 1.0 + ((y / -3.0) / sqrt(x));
	else
		tmp = 1.0 - ((x * 9.0) ^ -1.0);
	end
	tmp_2 = tmp;
end
code[x_, y_] := If[Or[LessEqual[y, -2.9e+84], N[Not[LessEqual[y, 1.9e+41]], $MachinePrecision]], N[(1.0 + N[(N[(y / -3.0), $MachinePrecision] / N[Sqrt[x], $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(1.0 - N[Power[N[(x * 9.0), $MachinePrecision], -1.0], $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;y \leq -2.9 \cdot 10^{+84} \lor \neg \left(y \leq 1.9 \cdot 10^{+41}\right):\\
\;\;\;\;1 + \frac{\frac{y}{-3}}{\sqrt{x}}\\

\mathbf{else}:\\
\;\;\;\;1 - {\left(x \cdot 9\right)}^{-1}\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if y < -2.89999999999999989e84 or 1.9000000000000001e41 < y

    1. Initial program 99.6%

      \[\left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{3 \cdot \sqrt{x}} \]
    2. Step-by-step derivation
      1. associate--l-99.6%

        \[\leadsto \color{blue}{1 - \left(\frac{1}{x \cdot 9} + \frac{y}{3 \cdot \sqrt{x}}\right)} \]
      2. sub-neg99.6%

        \[\leadsto \color{blue}{1 + \left(-\left(\frac{1}{x \cdot 9} + \frac{y}{3 \cdot \sqrt{x}}\right)\right)} \]
      3. +-commutative99.6%

        \[\leadsto 1 + \left(-\color{blue}{\left(\frac{y}{3 \cdot \sqrt{x}} + \frac{1}{x \cdot 9}\right)}\right) \]
      4. distribute-neg-in99.6%

        \[\leadsto 1 + \color{blue}{\left(\left(-\frac{y}{3 \cdot \sqrt{x}}\right) + \left(-\frac{1}{x \cdot 9}\right)\right)} \]
      5. distribute-frac-neg99.6%

        \[\leadsto 1 + \left(\color{blue}{\frac{-y}{3 \cdot \sqrt{x}}} + \left(-\frac{1}{x \cdot 9}\right)\right) \]
      6. sub-neg99.6%

        \[\leadsto 1 + \color{blue}{\left(\frac{-y}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right)} \]
      7. neg-mul-199.6%

        \[\leadsto 1 + \left(\frac{\color{blue}{-1 \cdot y}}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right) \]
      8. *-commutative99.6%

        \[\leadsto 1 + \left(\frac{\color{blue}{y \cdot -1}}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right) \]
      9. associate-/l*99.5%

        \[\leadsto 1 + \left(\color{blue}{y \cdot \frac{-1}{3 \cdot \sqrt{x}}} - \frac{1}{x \cdot 9}\right) \]
      10. fma-neg99.5%

        \[\leadsto 1 + \color{blue}{\mathsf{fma}\left(y, \frac{-1}{3 \cdot \sqrt{x}}, -\frac{1}{x \cdot 9}\right)} \]
      11. associate-/r*99.4%

        \[\leadsto 1 + \mathsf{fma}\left(y, \color{blue}{\frac{\frac{-1}{3}}{\sqrt{x}}}, -\frac{1}{x \cdot 9}\right) \]
      12. metadata-eval99.4%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{\color{blue}{-0.3333333333333333}}{\sqrt{x}}, -\frac{1}{x \cdot 9}\right) \]
      13. *-commutative99.4%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, -\frac{1}{\color{blue}{9 \cdot x}}\right) \]
      14. associate-/r*99.4%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, -\color{blue}{\frac{\frac{1}{9}}{x}}\right) \]
      15. distribute-neg-frac99.4%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \color{blue}{\frac{-\frac{1}{9}}{x}}\right) \]
      16. metadata-eval99.4%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{-\color{blue}{0.1111111111111111}}{x}\right) \]
      17. metadata-eval99.4%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{\color{blue}{-0.1111111111111111}}{x}\right) \]
    3. Simplified99.4%

      \[\leadsto \color{blue}{1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{-0.1111111111111111}{x}\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around inf 95.0%

      \[\leadsto 1 + \color{blue}{-0.3333333333333333 \cdot \left(\sqrt{\frac{1}{x}} \cdot y\right)} \]
    6. Step-by-step derivation
      1. associate-*r*95.1%

        \[\leadsto 1 + \color{blue}{\left(-0.3333333333333333 \cdot \sqrt{\frac{1}{x}}\right) \cdot y} \]
      2. *-commutative95.1%

        \[\leadsto 1 + \color{blue}{\left(\sqrt{\frac{1}{x}} \cdot -0.3333333333333333\right)} \cdot y \]
      3. associate-*l*95.0%

        \[\leadsto 1 + \color{blue}{\sqrt{\frac{1}{x}} \cdot \left(-0.3333333333333333 \cdot y\right)} \]
    7. Simplified95.0%

      \[\leadsto 1 + \color{blue}{\sqrt{\frac{1}{x}} \cdot \left(-0.3333333333333333 \cdot y\right)} \]
    8. Step-by-step derivation
      1. associate-*r*95.1%

        \[\leadsto 1 + \color{blue}{\left(\sqrt{\frac{1}{x}} \cdot -0.3333333333333333\right) \cdot y} \]
      2. sqrt-div95.1%

        \[\leadsto 1 + \left(\color{blue}{\frac{\sqrt{1}}{\sqrt{x}}} \cdot -0.3333333333333333\right) \cdot y \]
      3. metadata-eval95.1%

        \[\leadsto 1 + \left(\frac{\color{blue}{1}}{\sqrt{x}} \cdot -0.3333333333333333\right) \cdot y \]
      4. associate-*l/95.1%

        \[\leadsto 1 + \color{blue}{\frac{1 \cdot -0.3333333333333333}{\sqrt{x}}} \cdot y \]
      5. metadata-eval95.1%

        \[\leadsto 1 + \frac{\color{blue}{-0.3333333333333333}}{\sqrt{x}} \cdot y \]
      6. metadata-eval95.1%

        \[\leadsto 1 + \frac{\color{blue}{\frac{0.3333333333333333}{-1}}}{\sqrt{x}} \cdot y \]
      7. associate-/r*95.1%

        \[\leadsto 1 + \color{blue}{\frac{0.3333333333333333}{-1 \cdot \sqrt{x}}} \cdot y \]
      8. neg-mul-195.1%

        \[\leadsto 1 + \frac{0.3333333333333333}{\color{blue}{-\sqrt{x}}} \cdot y \]
      9. un-div-inv95.1%

        \[\leadsto 1 + \color{blue}{\left(0.3333333333333333 \cdot \frac{1}{-\sqrt{x}}\right)} \cdot y \]
    9. Applied egg-rr95.3%

      \[\leadsto 1 + \color{blue}{\frac{-y}{\sqrt{x} \cdot 3}} \]
    10. Step-by-step derivation
      1. frac-2neg95.3%

        \[\leadsto 1 + \color{blue}{\frac{-\left(-y\right)}{-\sqrt{x} \cdot 3}} \]
      2. div-inv95.2%

        \[\leadsto 1 + \color{blue}{\left(-\left(-y\right)\right) \cdot \frac{1}{-\sqrt{x} \cdot 3}} \]
      3. remove-double-neg95.2%

        \[\leadsto 1 + \color{blue}{y} \cdot \frac{1}{-\sqrt{x} \cdot 3} \]
      4. distribute-rgt-neg-in95.2%

        \[\leadsto 1 + y \cdot \frac{1}{\color{blue}{\sqrt{x} \cdot \left(-3\right)}} \]
      5. metadata-eval95.2%

        \[\leadsto 1 + y \cdot \frac{1}{\sqrt{x} \cdot \color{blue}{-3}} \]
    11. Applied egg-rr95.2%

      \[\leadsto 1 + \color{blue}{y \cdot \frac{1}{\sqrt{x} \cdot -3}} \]
    12. Step-by-step derivation
      1. expm1-log1p-u44.3%

        \[\leadsto 1 + \color{blue}{\mathsf{expm1}\left(\mathsf{log1p}\left(y \cdot \frac{1}{\sqrt{x} \cdot -3}\right)\right)} \]
      2. expm1-undefine44.3%

        \[\leadsto 1 + \color{blue}{\left(e^{\mathsf{log1p}\left(y \cdot \frac{1}{\sqrt{x} \cdot -3}\right)} - 1\right)} \]
      3. *-commutative44.3%

        \[\leadsto 1 + \left(e^{\mathsf{log1p}\left(y \cdot \frac{1}{\color{blue}{-3 \cdot \sqrt{x}}}\right)} - 1\right) \]
      4. associate-/r*44.3%

        \[\leadsto 1 + \left(e^{\mathsf{log1p}\left(y \cdot \color{blue}{\frac{\frac{1}{-3}}{\sqrt{x}}}\right)} - 1\right) \]
      5. metadata-eval44.3%

        \[\leadsto 1 + \left(e^{\mathsf{log1p}\left(y \cdot \frac{\color{blue}{-0.3333333333333333}}{\sqrt{x}}\right)} - 1\right) \]
    13. Applied egg-rr44.3%

      \[\leadsto 1 + \color{blue}{\left(e^{\mathsf{log1p}\left(y \cdot \frac{-0.3333333333333333}{\sqrt{x}}\right)} - 1\right)} \]
    14. Simplified95.2%

      \[\leadsto 1 + \color{blue}{\frac{\frac{y}{-3}}{\sqrt{x}}} \]

    if -2.89999999999999989e84 < y < 1.9000000000000001e41

    1. Initial program 99.8%

      \[\left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{3 \cdot \sqrt{x}} \]
    2. Step-by-step derivation
      1. associate--l-99.8%

        \[\leadsto \color{blue}{1 - \left(\frac{1}{x \cdot 9} + \frac{y}{3 \cdot \sqrt{x}}\right)} \]
      2. sub-neg99.8%

        \[\leadsto \color{blue}{1 + \left(-\left(\frac{1}{x \cdot 9} + \frac{y}{3 \cdot \sqrt{x}}\right)\right)} \]
      3. +-commutative99.8%

        \[\leadsto 1 + \left(-\color{blue}{\left(\frac{y}{3 \cdot \sqrt{x}} + \frac{1}{x \cdot 9}\right)}\right) \]
      4. distribute-neg-in99.8%

        \[\leadsto 1 + \color{blue}{\left(\left(-\frac{y}{3 \cdot \sqrt{x}}\right) + \left(-\frac{1}{x \cdot 9}\right)\right)} \]
      5. distribute-frac-neg99.8%

        \[\leadsto 1 + \left(\color{blue}{\frac{-y}{3 \cdot \sqrt{x}}} + \left(-\frac{1}{x \cdot 9}\right)\right) \]
      6. sub-neg99.8%

        \[\leadsto 1 + \color{blue}{\left(\frac{-y}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right)} \]
      7. neg-mul-199.8%

        \[\leadsto 1 + \left(\frac{\color{blue}{-1 \cdot y}}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right) \]
      8. *-commutative99.8%

        \[\leadsto 1 + \left(\frac{\color{blue}{y \cdot -1}}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right) \]
      9. associate-/l*99.8%

        \[\leadsto 1 + \left(\color{blue}{y \cdot \frac{-1}{3 \cdot \sqrt{x}}} - \frac{1}{x \cdot 9}\right) \]
      10. fma-neg99.8%

        \[\leadsto 1 + \color{blue}{\mathsf{fma}\left(y, \frac{-1}{3 \cdot \sqrt{x}}, -\frac{1}{x \cdot 9}\right)} \]
      11. associate-/r*99.8%

        \[\leadsto 1 + \mathsf{fma}\left(y, \color{blue}{\frac{\frac{-1}{3}}{\sqrt{x}}}, -\frac{1}{x \cdot 9}\right) \]
      12. metadata-eval99.8%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{\color{blue}{-0.3333333333333333}}{\sqrt{x}}, -\frac{1}{x \cdot 9}\right) \]
      13. *-commutative99.8%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, -\frac{1}{\color{blue}{9 \cdot x}}\right) \]
      14. associate-/r*99.7%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, -\color{blue}{\frac{\frac{1}{9}}{x}}\right) \]
      15. distribute-neg-frac99.7%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \color{blue}{\frac{-\frac{1}{9}}{x}}\right) \]
      16. metadata-eval99.7%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{-\color{blue}{0.1111111111111111}}{x}\right) \]
      17. metadata-eval99.7%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{\color{blue}{-0.1111111111111111}}{x}\right) \]
    3. Simplified99.7%

      \[\leadsto \color{blue}{1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{-0.1111111111111111}{x}\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around 0 94.2%

      \[\leadsto 1 + \color{blue}{\frac{-0.1111111111111111}{x}} \]
    6. Step-by-step derivation
      1. div-inv94.2%

        \[\leadsto 1 + \color{blue}{-0.1111111111111111 \cdot \frac{1}{x}} \]
      2. metadata-eval94.2%

        \[\leadsto 1 + \color{blue}{\left(-0.1111111111111111\right)} \cdot \frac{1}{x} \]
      3. cancel-sign-sub-inv94.2%

        \[\leadsto \color{blue}{1 - 0.1111111111111111 \cdot \frac{1}{x}} \]
      4. *-commutative94.2%

        \[\leadsto 1 - \color{blue}{\frac{1}{x} \cdot 0.1111111111111111} \]
      5. metadata-eval94.2%

        \[\leadsto 1 - \frac{1}{x} \cdot \color{blue}{\frac{1}{9}} \]
      6. div-inv94.3%

        \[\leadsto 1 - \color{blue}{\frac{\frac{1}{x}}{9}} \]
      7. associate-/r*94.3%

        \[\leadsto 1 - \color{blue}{\frac{1}{x \cdot 9}} \]
      8. add-sqr-sqrt94.0%

        \[\leadsto 1 - \color{blue}{\sqrt{\frac{1}{x \cdot 9}} \cdot \sqrt{\frac{1}{x \cdot 9}}} \]
      9. sqrt-unprod66.3%

        \[\leadsto 1 - \color{blue}{\sqrt{\frac{1}{x \cdot 9} \cdot \frac{1}{x \cdot 9}}} \]
      10. *-commutative66.3%

        \[\leadsto 1 - \sqrt{\frac{1}{\color{blue}{9 \cdot x}} \cdot \frac{1}{x \cdot 9}} \]
      11. associate-/r*66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{\frac{1}{9}}{x}} \cdot \frac{1}{x \cdot 9}} \]
      12. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{\color{blue}{0.1111111111111111}}{x} \cdot \frac{1}{x \cdot 9}} \]
      13. *-commutative66.3%

        \[\leadsto 1 - \sqrt{\frac{0.1111111111111111}{x} \cdot \frac{1}{\color{blue}{9 \cdot x}}} \]
      14. associate-/r*66.3%

        \[\leadsto 1 - \sqrt{\frac{0.1111111111111111}{x} \cdot \color{blue}{\frac{\frac{1}{9}}{x}}} \]
      15. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{0.1111111111111111}{x} \cdot \frac{\color{blue}{0.1111111111111111}}{x}} \]
      16. frac-times66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{0.1111111111111111 \cdot 0.1111111111111111}{x \cdot x}}} \]
      17. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{\color{blue}{0.012345679012345678}}{x \cdot x}} \]
      18. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{\color{blue}{-0.1111111111111111 \cdot -0.1111111111111111}}{x \cdot x}} \]
      19. frac-times66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{-0.1111111111111111}{x} \cdot \frac{-0.1111111111111111}{x}}} \]
      20. sqrt-unprod0.0%

        \[\leadsto 1 - \color{blue}{\sqrt{\frac{-0.1111111111111111}{x}} \cdot \sqrt{\frac{-0.1111111111111111}{x}}} \]
      21. add-sqr-sqrt40.4%

        \[\leadsto 1 - \color{blue}{\frac{-0.1111111111111111}{x}} \]
    7. Applied egg-rr40.4%

      \[\leadsto \color{blue}{1 - \frac{-0.1111111111111111}{x}} \]
    8. Step-by-step derivation
      1. add-sqr-sqrt0.0%

        \[\leadsto 1 - \color{blue}{\sqrt{\frac{-0.1111111111111111}{x}} \cdot \sqrt{\frac{-0.1111111111111111}{x}}} \]
      2. sqrt-unprod66.3%

        \[\leadsto 1 - \color{blue}{\sqrt{\frac{-0.1111111111111111}{x} \cdot \frac{-0.1111111111111111}{x}}} \]
      3. frac-times66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{-0.1111111111111111 \cdot -0.1111111111111111}{x \cdot x}}} \]
      4. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{\color{blue}{0.012345679012345678}}{x \cdot x}} \]
      5. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{\color{blue}{0.1111111111111111 \cdot 0.1111111111111111}}{x \cdot x}} \]
      6. frac-times66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{0.1111111111111111}{x} \cdot \frac{0.1111111111111111}{x}}} \]
      7. clear-num66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{1}{\frac{x}{0.1111111111111111}}} \cdot \frac{0.1111111111111111}{x}} \]
      8. clear-num66.3%

        \[\leadsto 1 - \sqrt{\frac{1}{\frac{x}{0.1111111111111111}} \cdot \color{blue}{\frac{1}{\frac{x}{0.1111111111111111}}}} \]
      9. frac-times66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{1 \cdot 1}{\frac{x}{0.1111111111111111} \cdot \frac{x}{0.1111111111111111}}}} \]
      10. div-inv66.3%

        \[\leadsto 1 - \sqrt{\frac{1 \cdot 1}{\color{blue}{\left(x \cdot \frac{1}{0.1111111111111111}\right)} \cdot \frac{x}{0.1111111111111111}}} \]
      11. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{1 \cdot 1}{\left(x \cdot \color{blue}{9}\right) \cdot \frac{x}{0.1111111111111111}}} \]
      12. div-inv66.3%

        \[\leadsto 1 - \sqrt{\frac{1 \cdot 1}{\left(x \cdot 9\right) \cdot \color{blue}{\left(x \cdot \frac{1}{0.1111111111111111}\right)}}} \]
      13. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{1 \cdot 1}{\left(x \cdot 9\right) \cdot \left(x \cdot \color{blue}{9}\right)}} \]
      14. frac-times66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{1}{x \cdot 9} \cdot \frac{1}{x \cdot 9}}} \]
      15. sqrt-unprod94.0%

        \[\leadsto 1 - \color{blue}{\sqrt{\frac{1}{x \cdot 9}} \cdot \sqrt{\frac{1}{x \cdot 9}}} \]
      16. add-sqr-sqrt94.3%

        \[\leadsto 1 - \color{blue}{\frac{1}{x \cdot 9}} \]
      17. inv-pow94.3%

        \[\leadsto 1 - \color{blue}{{\left(x \cdot 9\right)}^{-1}} \]
    9. Applied egg-rr94.3%

      \[\leadsto 1 - \color{blue}{{\left(x \cdot 9\right)}^{-1}} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification94.7%

    \[\leadsto \begin{array}{l} \mathbf{if}\;y \leq -2.9 \cdot 10^{+84} \lor \neg \left(y \leq 1.9 \cdot 10^{+41}\right):\\ \;\;\;\;1 + \frac{\frac{y}{-3}}{\sqrt{x}}\\ \mathbf{else}:\\ \;\;\;\;1 - {\left(x \cdot 9\right)}^{-1}\\ \end{array} \]
  5. Add Preprocessing

Alternative 4: 94.8% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;y \leq -3.2 \cdot 10^{+84}:\\ \;\;\;\;1 + \frac{-0.3333333333333333}{\frac{\sqrt{x}}{y}}\\ \mathbf{elif}\;y \leq 2.2 \cdot 10^{+44}:\\ \;\;\;\;1 - {\left(x \cdot 9\right)}^{-1}\\ \mathbf{else}:\\ \;\;\;\;1 + -0.3333333333333333 \cdot \frac{y}{\sqrt{x}}\\ \end{array} \end{array} \]
(FPCore (x y)
 :precision binary64
 (if (<= y -3.2e+84)
   (+ 1.0 (/ -0.3333333333333333 (/ (sqrt x) y)))
   (if (<= y 2.2e+44)
     (- 1.0 (pow (* x 9.0) -1.0))
     (+ 1.0 (* -0.3333333333333333 (/ y (sqrt x)))))))
double code(double x, double y) {
	double tmp;
	if (y <= -3.2e+84) {
		tmp = 1.0 + (-0.3333333333333333 / (sqrt(x) / y));
	} else if (y <= 2.2e+44) {
		tmp = 1.0 - pow((x * 9.0), -1.0);
	} else {
		tmp = 1.0 + (-0.3333333333333333 * (y / sqrt(x)));
	}
	return tmp;
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8) :: tmp
    if (y <= (-3.2d+84)) then
        tmp = 1.0d0 + ((-0.3333333333333333d0) / (sqrt(x) / y))
    else if (y <= 2.2d+44) then
        tmp = 1.0d0 - ((x * 9.0d0) ** (-1.0d0))
    else
        tmp = 1.0d0 + ((-0.3333333333333333d0) * (y / sqrt(x)))
    end if
    code = tmp
end function
public static double code(double x, double y) {
	double tmp;
	if (y <= -3.2e+84) {
		tmp = 1.0 + (-0.3333333333333333 / (Math.sqrt(x) / y));
	} else if (y <= 2.2e+44) {
		tmp = 1.0 - Math.pow((x * 9.0), -1.0);
	} else {
		tmp = 1.0 + (-0.3333333333333333 * (y / Math.sqrt(x)));
	}
	return tmp;
}
def code(x, y):
	tmp = 0
	if y <= -3.2e+84:
		tmp = 1.0 + (-0.3333333333333333 / (math.sqrt(x) / y))
	elif y <= 2.2e+44:
		tmp = 1.0 - math.pow((x * 9.0), -1.0)
	else:
		tmp = 1.0 + (-0.3333333333333333 * (y / math.sqrt(x)))
	return tmp
function code(x, y)
	tmp = 0.0
	if (y <= -3.2e+84)
		tmp = Float64(1.0 + Float64(-0.3333333333333333 / Float64(sqrt(x) / y)));
	elseif (y <= 2.2e+44)
		tmp = Float64(1.0 - (Float64(x * 9.0) ^ -1.0));
	else
		tmp = Float64(1.0 + Float64(-0.3333333333333333 * Float64(y / sqrt(x))));
	end
	return tmp
end
function tmp_2 = code(x, y)
	tmp = 0.0;
	if (y <= -3.2e+84)
		tmp = 1.0 + (-0.3333333333333333 / (sqrt(x) / y));
	elseif (y <= 2.2e+44)
		tmp = 1.0 - ((x * 9.0) ^ -1.0);
	else
		tmp = 1.0 + (-0.3333333333333333 * (y / sqrt(x)));
	end
	tmp_2 = tmp;
end
code[x_, y_] := If[LessEqual[y, -3.2e+84], N[(1.0 + N[(-0.3333333333333333 / N[(N[Sqrt[x], $MachinePrecision] / y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[y, 2.2e+44], N[(1.0 - N[Power[N[(x * 9.0), $MachinePrecision], -1.0], $MachinePrecision]), $MachinePrecision], N[(1.0 + N[(-0.3333333333333333 * N[(y / N[Sqrt[x], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;y \leq -3.2 \cdot 10^{+84}:\\
\;\;\;\;1 + \frac{-0.3333333333333333}{\frac{\sqrt{x}}{y}}\\

\mathbf{elif}\;y \leq 2.2 \cdot 10^{+44}:\\
\;\;\;\;1 - {\left(x \cdot 9\right)}^{-1}\\

\mathbf{else}:\\
\;\;\;\;1 + -0.3333333333333333 \cdot \frac{y}{\sqrt{x}}\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if y < -3.2000000000000001e84

    1. Initial program 99.5%

      \[\left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{3 \cdot \sqrt{x}} \]
    2. Step-by-step derivation
      1. sub-neg99.5%

        \[\leadsto \color{blue}{\left(1 - \frac{1}{x \cdot 9}\right) + \left(-\frac{y}{3 \cdot \sqrt{x}}\right)} \]
      2. *-commutative99.5%

        \[\leadsto \left(1 - \frac{1}{\color{blue}{9 \cdot x}}\right) + \left(-\frac{y}{3 \cdot \sqrt{x}}\right) \]
      3. associate-/r*99.5%

        \[\leadsto \left(1 - \color{blue}{\frac{\frac{1}{9}}{x}}\right) + \left(-\frac{y}{3 \cdot \sqrt{x}}\right) \]
      4. metadata-eval99.5%

        \[\leadsto \left(1 - \frac{\color{blue}{0.1111111111111111}}{x}\right) + \left(-\frac{y}{3 \cdot \sqrt{x}}\right) \]
      5. distribute-frac-neg99.5%

        \[\leadsto \left(1 - \frac{0.1111111111111111}{x}\right) + \color{blue}{\frac{-y}{3 \cdot \sqrt{x}}} \]
      6. neg-mul-199.5%

        \[\leadsto \left(1 - \frac{0.1111111111111111}{x}\right) + \frac{\color{blue}{-1 \cdot y}}{3 \cdot \sqrt{x}} \]
      7. times-frac99.4%

        \[\leadsto \left(1 - \frac{0.1111111111111111}{x}\right) + \color{blue}{\frac{-1}{3} \cdot \frac{y}{\sqrt{x}}} \]
      8. metadata-eval99.4%

        \[\leadsto \left(1 - \frac{0.1111111111111111}{x}\right) + \color{blue}{-0.3333333333333333} \cdot \frac{y}{\sqrt{x}} \]
    3. Simplified99.4%

      \[\leadsto \color{blue}{\left(1 - \frac{0.1111111111111111}{x}\right) + -0.3333333333333333 \cdot \frac{y}{\sqrt{x}}} \]
    4. Add Preprocessing
    5. Taylor expanded in x around inf 99.4%

      \[\leadsto \color{blue}{1} + -0.3333333333333333 \cdot \frac{y}{\sqrt{x}} \]
    6. Step-by-step derivation
      1. clear-num99.3%

        \[\leadsto 1 + -0.3333333333333333 \cdot \color{blue}{\frac{1}{\frac{\sqrt{x}}{y}}} \]
      2. un-div-inv99.5%

        \[\leadsto 1 + \color{blue}{\frac{-0.3333333333333333}{\frac{\sqrt{x}}{y}}} \]
    7. Applied egg-rr99.5%

      \[\leadsto 1 + \color{blue}{\frac{-0.3333333333333333}{\frac{\sqrt{x}}{y}}} \]

    if -3.2000000000000001e84 < y < 2.19999999999999996e44

    1. Initial program 99.8%

      \[\left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{3 \cdot \sqrt{x}} \]
    2. Step-by-step derivation
      1. associate--l-99.8%

        \[\leadsto \color{blue}{1 - \left(\frac{1}{x \cdot 9} + \frac{y}{3 \cdot \sqrt{x}}\right)} \]
      2. sub-neg99.8%

        \[\leadsto \color{blue}{1 + \left(-\left(\frac{1}{x \cdot 9} + \frac{y}{3 \cdot \sqrt{x}}\right)\right)} \]
      3. +-commutative99.8%

        \[\leadsto 1 + \left(-\color{blue}{\left(\frac{y}{3 \cdot \sqrt{x}} + \frac{1}{x \cdot 9}\right)}\right) \]
      4. distribute-neg-in99.8%

        \[\leadsto 1 + \color{blue}{\left(\left(-\frac{y}{3 \cdot \sqrt{x}}\right) + \left(-\frac{1}{x \cdot 9}\right)\right)} \]
      5. distribute-frac-neg99.8%

        \[\leadsto 1 + \left(\color{blue}{\frac{-y}{3 \cdot \sqrt{x}}} + \left(-\frac{1}{x \cdot 9}\right)\right) \]
      6. sub-neg99.8%

        \[\leadsto 1 + \color{blue}{\left(\frac{-y}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right)} \]
      7. neg-mul-199.8%

        \[\leadsto 1 + \left(\frac{\color{blue}{-1 \cdot y}}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right) \]
      8. *-commutative99.8%

        \[\leadsto 1 + \left(\frac{\color{blue}{y \cdot -1}}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right) \]
      9. associate-/l*99.8%

        \[\leadsto 1 + \left(\color{blue}{y \cdot \frac{-1}{3 \cdot \sqrt{x}}} - \frac{1}{x \cdot 9}\right) \]
      10. fma-neg99.8%

        \[\leadsto 1 + \color{blue}{\mathsf{fma}\left(y, \frac{-1}{3 \cdot \sqrt{x}}, -\frac{1}{x \cdot 9}\right)} \]
      11. associate-/r*99.8%

        \[\leadsto 1 + \mathsf{fma}\left(y, \color{blue}{\frac{\frac{-1}{3}}{\sqrt{x}}}, -\frac{1}{x \cdot 9}\right) \]
      12. metadata-eval99.8%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{\color{blue}{-0.3333333333333333}}{\sqrt{x}}, -\frac{1}{x \cdot 9}\right) \]
      13. *-commutative99.8%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, -\frac{1}{\color{blue}{9 \cdot x}}\right) \]
      14. associate-/r*99.7%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, -\color{blue}{\frac{\frac{1}{9}}{x}}\right) \]
      15. distribute-neg-frac99.7%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \color{blue}{\frac{-\frac{1}{9}}{x}}\right) \]
      16. metadata-eval99.7%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{-\color{blue}{0.1111111111111111}}{x}\right) \]
      17. metadata-eval99.7%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{\color{blue}{-0.1111111111111111}}{x}\right) \]
    3. Simplified99.7%

      \[\leadsto \color{blue}{1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{-0.1111111111111111}{x}\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around 0 94.2%

      \[\leadsto 1 + \color{blue}{\frac{-0.1111111111111111}{x}} \]
    6. Step-by-step derivation
      1. div-inv94.2%

        \[\leadsto 1 + \color{blue}{-0.1111111111111111 \cdot \frac{1}{x}} \]
      2. metadata-eval94.2%

        \[\leadsto 1 + \color{blue}{\left(-0.1111111111111111\right)} \cdot \frac{1}{x} \]
      3. cancel-sign-sub-inv94.2%

        \[\leadsto \color{blue}{1 - 0.1111111111111111 \cdot \frac{1}{x}} \]
      4. *-commutative94.2%

        \[\leadsto 1 - \color{blue}{\frac{1}{x} \cdot 0.1111111111111111} \]
      5. metadata-eval94.2%

        \[\leadsto 1 - \frac{1}{x} \cdot \color{blue}{\frac{1}{9}} \]
      6. div-inv94.3%

        \[\leadsto 1 - \color{blue}{\frac{\frac{1}{x}}{9}} \]
      7. associate-/r*94.3%

        \[\leadsto 1 - \color{blue}{\frac{1}{x \cdot 9}} \]
      8. add-sqr-sqrt94.0%

        \[\leadsto 1 - \color{blue}{\sqrt{\frac{1}{x \cdot 9}} \cdot \sqrt{\frac{1}{x \cdot 9}}} \]
      9. sqrt-unprod66.3%

        \[\leadsto 1 - \color{blue}{\sqrt{\frac{1}{x \cdot 9} \cdot \frac{1}{x \cdot 9}}} \]
      10. *-commutative66.3%

        \[\leadsto 1 - \sqrt{\frac{1}{\color{blue}{9 \cdot x}} \cdot \frac{1}{x \cdot 9}} \]
      11. associate-/r*66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{\frac{1}{9}}{x}} \cdot \frac{1}{x \cdot 9}} \]
      12. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{\color{blue}{0.1111111111111111}}{x} \cdot \frac{1}{x \cdot 9}} \]
      13. *-commutative66.3%

        \[\leadsto 1 - \sqrt{\frac{0.1111111111111111}{x} \cdot \frac{1}{\color{blue}{9 \cdot x}}} \]
      14. associate-/r*66.3%

        \[\leadsto 1 - \sqrt{\frac{0.1111111111111111}{x} \cdot \color{blue}{\frac{\frac{1}{9}}{x}}} \]
      15. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{0.1111111111111111}{x} \cdot \frac{\color{blue}{0.1111111111111111}}{x}} \]
      16. frac-times66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{0.1111111111111111 \cdot 0.1111111111111111}{x \cdot x}}} \]
      17. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{\color{blue}{0.012345679012345678}}{x \cdot x}} \]
      18. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{\color{blue}{-0.1111111111111111 \cdot -0.1111111111111111}}{x \cdot x}} \]
      19. frac-times66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{-0.1111111111111111}{x} \cdot \frac{-0.1111111111111111}{x}}} \]
      20. sqrt-unprod0.0%

        \[\leadsto 1 - \color{blue}{\sqrt{\frac{-0.1111111111111111}{x}} \cdot \sqrt{\frac{-0.1111111111111111}{x}}} \]
      21. add-sqr-sqrt40.4%

        \[\leadsto 1 - \color{blue}{\frac{-0.1111111111111111}{x}} \]
    7. Applied egg-rr40.4%

      \[\leadsto \color{blue}{1 - \frac{-0.1111111111111111}{x}} \]
    8. Step-by-step derivation
      1. add-sqr-sqrt0.0%

        \[\leadsto 1 - \color{blue}{\sqrt{\frac{-0.1111111111111111}{x}} \cdot \sqrt{\frac{-0.1111111111111111}{x}}} \]
      2. sqrt-unprod66.3%

        \[\leadsto 1 - \color{blue}{\sqrt{\frac{-0.1111111111111111}{x} \cdot \frac{-0.1111111111111111}{x}}} \]
      3. frac-times66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{-0.1111111111111111 \cdot -0.1111111111111111}{x \cdot x}}} \]
      4. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{\color{blue}{0.012345679012345678}}{x \cdot x}} \]
      5. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{\color{blue}{0.1111111111111111 \cdot 0.1111111111111111}}{x \cdot x}} \]
      6. frac-times66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{0.1111111111111111}{x} \cdot \frac{0.1111111111111111}{x}}} \]
      7. clear-num66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{1}{\frac{x}{0.1111111111111111}}} \cdot \frac{0.1111111111111111}{x}} \]
      8. clear-num66.3%

        \[\leadsto 1 - \sqrt{\frac{1}{\frac{x}{0.1111111111111111}} \cdot \color{blue}{\frac{1}{\frac{x}{0.1111111111111111}}}} \]
      9. frac-times66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{1 \cdot 1}{\frac{x}{0.1111111111111111} \cdot \frac{x}{0.1111111111111111}}}} \]
      10. div-inv66.3%

        \[\leadsto 1 - \sqrt{\frac{1 \cdot 1}{\color{blue}{\left(x \cdot \frac{1}{0.1111111111111111}\right)} \cdot \frac{x}{0.1111111111111111}}} \]
      11. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{1 \cdot 1}{\left(x \cdot \color{blue}{9}\right) \cdot \frac{x}{0.1111111111111111}}} \]
      12. div-inv66.3%

        \[\leadsto 1 - \sqrt{\frac{1 \cdot 1}{\left(x \cdot 9\right) \cdot \color{blue}{\left(x \cdot \frac{1}{0.1111111111111111}\right)}}} \]
      13. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{1 \cdot 1}{\left(x \cdot 9\right) \cdot \left(x \cdot \color{blue}{9}\right)}} \]
      14. frac-times66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{1}{x \cdot 9} \cdot \frac{1}{x \cdot 9}}} \]
      15. sqrt-unprod94.0%

        \[\leadsto 1 - \color{blue}{\sqrt{\frac{1}{x \cdot 9}} \cdot \sqrt{\frac{1}{x \cdot 9}}} \]
      16. add-sqr-sqrt94.3%

        \[\leadsto 1 - \color{blue}{\frac{1}{x \cdot 9}} \]
      17. inv-pow94.3%

        \[\leadsto 1 - \color{blue}{{\left(x \cdot 9\right)}^{-1}} \]
    9. Applied egg-rr94.3%

      \[\leadsto 1 - \color{blue}{{\left(x \cdot 9\right)}^{-1}} \]

    if 2.19999999999999996e44 < y

    1. Initial program 99.6%

      \[\left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{3 \cdot \sqrt{x}} \]
    2. Step-by-step derivation
      1. sub-neg99.6%

        \[\leadsto \color{blue}{\left(1 - \frac{1}{x \cdot 9}\right) + \left(-\frac{y}{3 \cdot \sqrt{x}}\right)} \]
      2. *-commutative99.6%

        \[\leadsto \left(1 - \frac{1}{\color{blue}{9 \cdot x}}\right) + \left(-\frac{y}{3 \cdot \sqrt{x}}\right) \]
      3. associate-/r*99.6%

        \[\leadsto \left(1 - \color{blue}{\frac{\frac{1}{9}}{x}}\right) + \left(-\frac{y}{3 \cdot \sqrt{x}}\right) \]
      4. metadata-eval99.6%

        \[\leadsto \left(1 - \frac{\color{blue}{0.1111111111111111}}{x}\right) + \left(-\frac{y}{3 \cdot \sqrt{x}}\right) \]
      5. distribute-frac-neg99.6%

        \[\leadsto \left(1 - \frac{0.1111111111111111}{x}\right) + \color{blue}{\frac{-y}{3 \cdot \sqrt{x}}} \]
      6. neg-mul-199.6%

        \[\leadsto \left(1 - \frac{0.1111111111111111}{x}\right) + \frac{\color{blue}{-1 \cdot y}}{3 \cdot \sqrt{x}} \]
      7. times-frac99.4%

        \[\leadsto \left(1 - \frac{0.1111111111111111}{x}\right) + \color{blue}{\frac{-1}{3} \cdot \frac{y}{\sqrt{x}}} \]
      8. metadata-eval99.4%

        \[\leadsto \left(1 - \frac{0.1111111111111111}{x}\right) + \color{blue}{-0.3333333333333333} \cdot \frac{y}{\sqrt{x}} \]
    3. Simplified99.4%

      \[\leadsto \color{blue}{\left(1 - \frac{0.1111111111111111}{x}\right) + -0.3333333333333333 \cdot \frac{y}{\sqrt{x}}} \]
    4. Add Preprocessing
    5. Taylor expanded in x around inf 91.6%

      \[\leadsto \color{blue}{1} + -0.3333333333333333 \cdot \frac{y}{\sqrt{x}} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification94.7%

    \[\leadsto \begin{array}{l} \mathbf{if}\;y \leq -3.2 \cdot 10^{+84}:\\ \;\;\;\;1 + \frac{-0.3333333333333333}{\frac{\sqrt{x}}{y}}\\ \mathbf{elif}\;y \leq 2.2 \cdot 10^{+44}:\\ \;\;\;\;1 - {\left(x \cdot 9\right)}^{-1}\\ \mathbf{else}:\\ \;\;\;\;1 + -0.3333333333333333 \cdot \frac{y}{\sqrt{x}}\\ \end{array} \]
  5. Add Preprocessing

Alternative 5: 94.8% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;y \leq -2.9 \cdot 10^{+84}:\\ \;\;\;\;1 + \frac{\frac{y}{\sqrt{x}}}{-3}\\ \mathbf{elif}\;y \leq 9.6 \cdot 10^{+45}:\\ \;\;\;\;1 - {\left(x \cdot 9\right)}^{-1}\\ \mathbf{else}:\\ \;\;\;\;1 + \frac{\frac{y}{-3}}{\sqrt{x}}\\ \end{array} \end{array} \]
(FPCore (x y)
 :precision binary64
 (if (<= y -2.9e+84)
   (+ 1.0 (/ (/ y (sqrt x)) -3.0))
   (if (<= y 9.6e+45)
     (- 1.0 (pow (* x 9.0) -1.0))
     (+ 1.0 (/ (/ y -3.0) (sqrt x))))))
double code(double x, double y) {
	double tmp;
	if (y <= -2.9e+84) {
		tmp = 1.0 + ((y / sqrt(x)) / -3.0);
	} else if (y <= 9.6e+45) {
		tmp = 1.0 - pow((x * 9.0), -1.0);
	} else {
		tmp = 1.0 + ((y / -3.0) / sqrt(x));
	}
	return tmp;
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8) :: tmp
    if (y <= (-2.9d+84)) then
        tmp = 1.0d0 + ((y / sqrt(x)) / (-3.0d0))
    else if (y <= 9.6d+45) then
        tmp = 1.0d0 - ((x * 9.0d0) ** (-1.0d0))
    else
        tmp = 1.0d0 + ((y / (-3.0d0)) / sqrt(x))
    end if
    code = tmp
end function
public static double code(double x, double y) {
	double tmp;
	if (y <= -2.9e+84) {
		tmp = 1.0 + ((y / Math.sqrt(x)) / -3.0);
	} else if (y <= 9.6e+45) {
		tmp = 1.0 - Math.pow((x * 9.0), -1.0);
	} else {
		tmp = 1.0 + ((y / -3.0) / Math.sqrt(x));
	}
	return tmp;
}
def code(x, y):
	tmp = 0
	if y <= -2.9e+84:
		tmp = 1.0 + ((y / math.sqrt(x)) / -3.0)
	elif y <= 9.6e+45:
		tmp = 1.0 - math.pow((x * 9.0), -1.0)
	else:
		tmp = 1.0 + ((y / -3.0) / math.sqrt(x))
	return tmp
function code(x, y)
	tmp = 0.0
	if (y <= -2.9e+84)
		tmp = Float64(1.0 + Float64(Float64(y / sqrt(x)) / -3.0));
	elseif (y <= 9.6e+45)
		tmp = Float64(1.0 - (Float64(x * 9.0) ^ -1.0));
	else
		tmp = Float64(1.0 + Float64(Float64(y / -3.0) / sqrt(x)));
	end
	return tmp
end
function tmp_2 = code(x, y)
	tmp = 0.0;
	if (y <= -2.9e+84)
		tmp = 1.0 + ((y / sqrt(x)) / -3.0);
	elseif (y <= 9.6e+45)
		tmp = 1.0 - ((x * 9.0) ^ -1.0);
	else
		tmp = 1.0 + ((y / -3.0) / sqrt(x));
	end
	tmp_2 = tmp;
end
code[x_, y_] := If[LessEqual[y, -2.9e+84], N[(1.0 + N[(N[(y / N[Sqrt[x], $MachinePrecision]), $MachinePrecision] / -3.0), $MachinePrecision]), $MachinePrecision], If[LessEqual[y, 9.6e+45], N[(1.0 - N[Power[N[(x * 9.0), $MachinePrecision], -1.0], $MachinePrecision]), $MachinePrecision], N[(1.0 + N[(N[(y / -3.0), $MachinePrecision] / N[Sqrt[x], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;y \leq -2.9 \cdot 10^{+84}:\\
\;\;\;\;1 + \frac{\frac{y}{\sqrt{x}}}{-3}\\

\mathbf{elif}\;y \leq 9.6 \cdot 10^{+45}:\\
\;\;\;\;1 - {\left(x \cdot 9\right)}^{-1}\\

\mathbf{else}:\\
\;\;\;\;1 + \frac{\frac{y}{-3}}{\sqrt{x}}\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if y < -2.89999999999999989e84

    1. Initial program 99.5%

      \[\left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{3 \cdot \sqrt{x}} \]
    2. Step-by-step derivation
      1. associate--l-99.5%

        \[\leadsto \color{blue}{1 - \left(\frac{1}{x \cdot 9} + \frac{y}{3 \cdot \sqrt{x}}\right)} \]
      2. sub-neg99.5%

        \[\leadsto \color{blue}{1 + \left(-\left(\frac{1}{x \cdot 9} + \frac{y}{3 \cdot \sqrt{x}}\right)\right)} \]
      3. +-commutative99.5%

        \[\leadsto 1 + \left(-\color{blue}{\left(\frac{y}{3 \cdot \sqrt{x}} + \frac{1}{x \cdot 9}\right)}\right) \]
      4. distribute-neg-in99.5%

        \[\leadsto 1 + \color{blue}{\left(\left(-\frac{y}{3 \cdot \sqrt{x}}\right) + \left(-\frac{1}{x \cdot 9}\right)\right)} \]
      5. distribute-frac-neg99.5%

        \[\leadsto 1 + \left(\color{blue}{\frac{-y}{3 \cdot \sqrt{x}}} + \left(-\frac{1}{x \cdot 9}\right)\right) \]
      6. sub-neg99.5%

        \[\leadsto 1 + \color{blue}{\left(\frac{-y}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right)} \]
      7. neg-mul-199.5%

        \[\leadsto 1 + \left(\frac{\color{blue}{-1 \cdot y}}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right) \]
      8. *-commutative99.5%

        \[\leadsto 1 + \left(\frac{\color{blue}{y \cdot -1}}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right) \]
      9. associate-/l*99.5%

        \[\leadsto 1 + \left(\color{blue}{y \cdot \frac{-1}{3 \cdot \sqrt{x}}} - \frac{1}{x \cdot 9}\right) \]
      10. fma-neg99.5%

        \[\leadsto 1 + \color{blue}{\mathsf{fma}\left(y, \frac{-1}{3 \cdot \sqrt{x}}, -\frac{1}{x \cdot 9}\right)} \]
      11. associate-/r*99.5%

        \[\leadsto 1 + \mathsf{fma}\left(y, \color{blue}{\frac{\frac{-1}{3}}{\sqrt{x}}}, -\frac{1}{x \cdot 9}\right) \]
      12. metadata-eval99.5%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{\color{blue}{-0.3333333333333333}}{\sqrt{x}}, -\frac{1}{x \cdot 9}\right) \]
      13. *-commutative99.5%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, -\frac{1}{\color{blue}{9 \cdot x}}\right) \]
      14. associate-/r*99.5%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, -\color{blue}{\frac{\frac{1}{9}}{x}}\right) \]
      15. distribute-neg-frac99.5%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \color{blue}{\frac{-\frac{1}{9}}{x}}\right) \]
      16. metadata-eval99.5%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{-\color{blue}{0.1111111111111111}}{x}\right) \]
      17. metadata-eval99.5%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{\color{blue}{-0.1111111111111111}}{x}\right) \]
    3. Simplified99.5%

      \[\leadsto \color{blue}{1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{-0.1111111111111111}{x}\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around inf 99.2%

      \[\leadsto 1 + \color{blue}{-0.3333333333333333 \cdot \left(\sqrt{\frac{1}{x}} \cdot y\right)} \]
    6. Step-by-step derivation
      1. associate-*r*99.5%

        \[\leadsto 1 + \color{blue}{\left(-0.3333333333333333 \cdot \sqrt{\frac{1}{x}}\right) \cdot y} \]
      2. *-commutative99.5%

        \[\leadsto 1 + \color{blue}{\left(\sqrt{\frac{1}{x}} \cdot -0.3333333333333333\right)} \cdot y \]
      3. associate-*l*99.3%

        \[\leadsto 1 + \color{blue}{\sqrt{\frac{1}{x}} \cdot \left(-0.3333333333333333 \cdot y\right)} \]
    7. Simplified99.3%

      \[\leadsto 1 + \color{blue}{\sqrt{\frac{1}{x}} \cdot \left(-0.3333333333333333 \cdot y\right)} \]
    8. Step-by-step derivation
      1. associate-*r*99.5%

        \[\leadsto 1 + \color{blue}{\left(\sqrt{\frac{1}{x}} \cdot -0.3333333333333333\right) \cdot y} \]
      2. sqrt-div99.5%

        \[\leadsto 1 + \left(\color{blue}{\frac{\sqrt{1}}{\sqrt{x}}} \cdot -0.3333333333333333\right) \cdot y \]
      3. metadata-eval99.5%

        \[\leadsto 1 + \left(\frac{\color{blue}{1}}{\sqrt{x}} \cdot -0.3333333333333333\right) \cdot y \]
      4. associate-*l/99.5%

        \[\leadsto 1 + \color{blue}{\frac{1 \cdot -0.3333333333333333}{\sqrt{x}}} \cdot y \]
      5. metadata-eval99.5%

        \[\leadsto 1 + \frac{\color{blue}{-0.3333333333333333}}{\sqrt{x}} \cdot y \]
      6. metadata-eval99.5%

        \[\leadsto 1 + \frac{\color{blue}{\frac{0.3333333333333333}{-1}}}{\sqrt{x}} \cdot y \]
      7. associate-/r*99.5%

        \[\leadsto 1 + \color{blue}{\frac{0.3333333333333333}{-1 \cdot \sqrt{x}}} \cdot y \]
      8. neg-mul-199.5%

        \[\leadsto 1 + \frac{0.3333333333333333}{\color{blue}{-\sqrt{x}}} \cdot y \]
      9. un-div-inv99.5%

        \[\leadsto 1 + \color{blue}{\left(0.3333333333333333 \cdot \frac{1}{-\sqrt{x}}\right)} \cdot y \]
    9. Applied egg-rr99.5%

      \[\leadsto 1 + \color{blue}{\frac{-y}{\sqrt{x} \cdot 3}} \]
    10. Step-by-step derivation
      1. frac-2neg99.5%

        \[\leadsto 1 + \color{blue}{\frac{-\left(-y\right)}{-\sqrt{x} \cdot 3}} \]
      2. div-inv99.5%

        \[\leadsto 1 + \color{blue}{\left(-\left(-y\right)\right) \cdot \frac{1}{-\sqrt{x} \cdot 3}} \]
      3. remove-double-neg99.5%

        \[\leadsto 1 + \color{blue}{y} \cdot \frac{1}{-\sqrt{x} \cdot 3} \]
      4. distribute-rgt-neg-in99.5%

        \[\leadsto 1 + y \cdot \frac{1}{\color{blue}{\sqrt{x} \cdot \left(-3\right)}} \]
      5. metadata-eval99.5%

        \[\leadsto 1 + y \cdot \frac{1}{\sqrt{x} \cdot \color{blue}{-3}} \]
    11. Applied egg-rr99.5%

      \[\leadsto 1 + \color{blue}{y \cdot \frac{1}{\sqrt{x} \cdot -3}} \]
    12. Step-by-step derivation
      1. un-div-inv99.5%

        \[\leadsto 1 + \color{blue}{\frac{y}{\sqrt{x} \cdot -3}} \]
      2. associate-/r*99.7%

        \[\leadsto 1 + \color{blue}{\frac{\frac{y}{\sqrt{x}}}{-3}} \]
    13. Applied egg-rr99.7%

      \[\leadsto 1 + \color{blue}{\frac{\frac{y}{\sqrt{x}}}{-3}} \]

    if -2.89999999999999989e84 < y < 9.59999999999999958e45

    1. Initial program 99.8%

      \[\left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{3 \cdot \sqrt{x}} \]
    2. Step-by-step derivation
      1. associate--l-99.8%

        \[\leadsto \color{blue}{1 - \left(\frac{1}{x \cdot 9} + \frac{y}{3 \cdot \sqrt{x}}\right)} \]
      2. sub-neg99.8%

        \[\leadsto \color{blue}{1 + \left(-\left(\frac{1}{x \cdot 9} + \frac{y}{3 \cdot \sqrt{x}}\right)\right)} \]
      3. +-commutative99.8%

        \[\leadsto 1 + \left(-\color{blue}{\left(\frac{y}{3 \cdot \sqrt{x}} + \frac{1}{x \cdot 9}\right)}\right) \]
      4. distribute-neg-in99.8%

        \[\leadsto 1 + \color{blue}{\left(\left(-\frac{y}{3 \cdot \sqrt{x}}\right) + \left(-\frac{1}{x \cdot 9}\right)\right)} \]
      5. distribute-frac-neg99.8%

        \[\leadsto 1 + \left(\color{blue}{\frac{-y}{3 \cdot \sqrt{x}}} + \left(-\frac{1}{x \cdot 9}\right)\right) \]
      6. sub-neg99.8%

        \[\leadsto 1 + \color{blue}{\left(\frac{-y}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right)} \]
      7. neg-mul-199.8%

        \[\leadsto 1 + \left(\frac{\color{blue}{-1 \cdot y}}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right) \]
      8. *-commutative99.8%

        \[\leadsto 1 + \left(\frac{\color{blue}{y \cdot -1}}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right) \]
      9. associate-/l*99.8%

        \[\leadsto 1 + \left(\color{blue}{y \cdot \frac{-1}{3 \cdot \sqrt{x}}} - \frac{1}{x \cdot 9}\right) \]
      10. fma-neg99.8%

        \[\leadsto 1 + \color{blue}{\mathsf{fma}\left(y, \frac{-1}{3 \cdot \sqrt{x}}, -\frac{1}{x \cdot 9}\right)} \]
      11. associate-/r*99.8%

        \[\leadsto 1 + \mathsf{fma}\left(y, \color{blue}{\frac{\frac{-1}{3}}{\sqrt{x}}}, -\frac{1}{x \cdot 9}\right) \]
      12. metadata-eval99.8%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{\color{blue}{-0.3333333333333333}}{\sqrt{x}}, -\frac{1}{x \cdot 9}\right) \]
      13. *-commutative99.8%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, -\frac{1}{\color{blue}{9 \cdot x}}\right) \]
      14. associate-/r*99.7%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, -\color{blue}{\frac{\frac{1}{9}}{x}}\right) \]
      15. distribute-neg-frac99.7%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \color{blue}{\frac{-\frac{1}{9}}{x}}\right) \]
      16. metadata-eval99.7%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{-\color{blue}{0.1111111111111111}}{x}\right) \]
      17. metadata-eval99.7%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{\color{blue}{-0.1111111111111111}}{x}\right) \]
    3. Simplified99.7%

      \[\leadsto \color{blue}{1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{-0.1111111111111111}{x}\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around 0 94.2%

      \[\leadsto 1 + \color{blue}{\frac{-0.1111111111111111}{x}} \]
    6. Step-by-step derivation
      1. div-inv94.2%

        \[\leadsto 1 + \color{blue}{-0.1111111111111111 \cdot \frac{1}{x}} \]
      2. metadata-eval94.2%

        \[\leadsto 1 + \color{blue}{\left(-0.1111111111111111\right)} \cdot \frac{1}{x} \]
      3. cancel-sign-sub-inv94.2%

        \[\leadsto \color{blue}{1 - 0.1111111111111111 \cdot \frac{1}{x}} \]
      4. *-commutative94.2%

        \[\leadsto 1 - \color{blue}{\frac{1}{x} \cdot 0.1111111111111111} \]
      5. metadata-eval94.2%

        \[\leadsto 1 - \frac{1}{x} \cdot \color{blue}{\frac{1}{9}} \]
      6. div-inv94.3%

        \[\leadsto 1 - \color{blue}{\frac{\frac{1}{x}}{9}} \]
      7. associate-/r*94.3%

        \[\leadsto 1 - \color{blue}{\frac{1}{x \cdot 9}} \]
      8. add-sqr-sqrt94.0%

        \[\leadsto 1 - \color{blue}{\sqrt{\frac{1}{x \cdot 9}} \cdot \sqrt{\frac{1}{x \cdot 9}}} \]
      9. sqrt-unprod66.3%

        \[\leadsto 1 - \color{blue}{\sqrt{\frac{1}{x \cdot 9} \cdot \frac{1}{x \cdot 9}}} \]
      10. *-commutative66.3%

        \[\leadsto 1 - \sqrt{\frac{1}{\color{blue}{9 \cdot x}} \cdot \frac{1}{x \cdot 9}} \]
      11. associate-/r*66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{\frac{1}{9}}{x}} \cdot \frac{1}{x \cdot 9}} \]
      12. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{\color{blue}{0.1111111111111111}}{x} \cdot \frac{1}{x \cdot 9}} \]
      13. *-commutative66.3%

        \[\leadsto 1 - \sqrt{\frac{0.1111111111111111}{x} \cdot \frac{1}{\color{blue}{9 \cdot x}}} \]
      14. associate-/r*66.3%

        \[\leadsto 1 - \sqrt{\frac{0.1111111111111111}{x} \cdot \color{blue}{\frac{\frac{1}{9}}{x}}} \]
      15. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{0.1111111111111111}{x} \cdot \frac{\color{blue}{0.1111111111111111}}{x}} \]
      16. frac-times66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{0.1111111111111111 \cdot 0.1111111111111111}{x \cdot x}}} \]
      17. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{\color{blue}{0.012345679012345678}}{x \cdot x}} \]
      18. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{\color{blue}{-0.1111111111111111 \cdot -0.1111111111111111}}{x \cdot x}} \]
      19. frac-times66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{-0.1111111111111111}{x} \cdot \frac{-0.1111111111111111}{x}}} \]
      20. sqrt-unprod0.0%

        \[\leadsto 1 - \color{blue}{\sqrt{\frac{-0.1111111111111111}{x}} \cdot \sqrt{\frac{-0.1111111111111111}{x}}} \]
      21. add-sqr-sqrt40.4%

        \[\leadsto 1 - \color{blue}{\frac{-0.1111111111111111}{x}} \]
    7. Applied egg-rr40.4%

      \[\leadsto \color{blue}{1 - \frac{-0.1111111111111111}{x}} \]
    8. Step-by-step derivation
      1. add-sqr-sqrt0.0%

        \[\leadsto 1 - \color{blue}{\sqrt{\frac{-0.1111111111111111}{x}} \cdot \sqrt{\frac{-0.1111111111111111}{x}}} \]
      2. sqrt-unprod66.3%

        \[\leadsto 1 - \color{blue}{\sqrt{\frac{-0.1111111111111111}{x} \cdot \frac{-0.1111111111111111}{x}}} \]
      3. frac-times66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{-0.1111111111111111 \cdot -0.1111111111111111}{x \cdot x}}} \]
      4. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{\color{blue}{0.012345679012345678}}{x \cdot x}} \]
      5. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{\color{blue}{0.1111111111111111 \cdot 0.1111111111111111}}{x \cdot x}} \]
      6. frac-times66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{0.1111111111111111}{x} \cdot \frac{0.1111111111111111}{x}}} \]
      7. clear-num66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{1}{\frac{x}{0.1111111111111111}}} \cdot \frac{0.1111111111111111}{x}} \]
      8. clear-num66.3%

        \[\leadsto 1 - \sqrt{\frac{1}{\frac{x}{0.1111111111111111}} \cdot \color{blue}{\frac{1}{\frac{x}{0.1111111111111111}}}} \]
      9. frac-times66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{1 \cdot 1}{\frac{x}{0.1111111111111111} \cdot \frac{x}{0.1111111111111111}}}} \]
      10. div-inv66.3%

        \[\leadsto 1 - \sqrt{\frac{1 \cdot 1}{\color{blue}{\left(x \cdot \frac{1}{0.1111111111111111}\right)} \cdot \frac{x}{0.1111111111111111}}} \]
      11. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{1 \cdot 1}{\left(x \cdot \color{blue}{9}\right) \cdot \frac{x}{0.1111111111111111}}} \]
      12. div-inv66.3%

        \[\leadsto 1 - \sqrt{\frac{1 \cdot 1}{\left(x \cdot 9\right) \cdot \color{blue}{\left(x \cdot \frac{1}{0.1111111111111111}\right)}}} \]
      13. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{1 \cdot 1}{\left(x \cdot 9\right) \cdot \left(x \cdot \color{blue}{9}\right)}} \]
      14. frac-times66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{1}{x \cdot 9} \cdot \frac{1}{x \cdot 9}}} \]
      15. sqrt-unprod94.0%

        \[\leadsto 1 - \color{blue}{\sqrt{\frac{1}{x \cdot 9}} \cdot \sqrt{\frac{1}{x \cdot 9}}} \]
      16. add-sqr-sqrt94.3%

        \[\leadsto 1 - \color{blue}{\frac{1}{x \cdot 9}} \]
      17. inv-pow94.3%

        \[\leadsto 1 - \color{blue}{{\left(x \cdot 9\right)}^{-1}} \]
    9. Applied egg-rr94.3%

      \[\leadsto 1 - \color{blue}{{\left(x \cdot 9\right)}^{-1}} \]

    if 9.59999999999999958e45 < y

    1. Initial program 99.6%

      \[\left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{3 \cdot \sqrt{x}} \]
    2. Step-by-step derivation
      1. associate--l-99.6%

        \[\leadsto \color{blue}{1 - \left(\frac{1}{x \cdot 9} + \frac{y}{3 \cdot \sqrt{x}}\right)} \]
      2. sub-neg99.6%

        \[\leadsto \color{blue}{1 + \left(-\left(\frac{1}{x \cdot 9} + \frac{y}{3 \cdot \sqrt{x}}\right)\right)} \]
      3. +-commutative99.6%

        \[\leadsto 1 + \left(-\color{blue}{\left(\frac{y}{3 \cdot \sqrt{x}} + \frac{1}{x \cdot 9}\right)}\right) \]
      4. distribute-neg-in99.6%

        \[\leadsto 1 + \color{blue}{\left(\left(-\frac{y}{3 \cdot \sqrt{x}}\right) + \left(-\frac{1}{x \cdot 9}\right)\right)} \]
      5. distribute-frac-neg99.6%

        \[\leadsto 1 + \left(\color{blue}{\frac{-y}{3 \cdot \sqrt{x}}} + \left(-\frac{1}{x \cdot 9}\right)\right) \]
      6. sub-neg99.6%

        \[\leadsto 1 + \color{blue}{\left(\frac{-y}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right)} \]
      7. neg-mul-199.6%

        \[\leadsto 1 + \left(\frac{\color{blue}{-1 \cdot y}}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right) \]
      8. *-commutative99.6%

        \[\leadsto 1 + \left(\frac{\color{blue}{y \cdot -1}}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right) \]
      9. associate-/l*99.5%

        \[\leadsto 1 + \left(\color{blue}{y \cdot \frac{-1}{3 \cdot \sqrt{x}}} - \frac{1}{x \cdot 9}\right) \]
      10. fma-neg99.5%

        \[\leadsto 1 + \color{blue}{\mathsf{fma}\left(y, \frac{-1}{3 \cdot \sqrt{x}}, -\frac{1}{x \cdot 9}\right)} \]
      11. associate-/r*99.3%

        \[\leadsto 1 + \mathsf{fma}\left(y, \color{blue}{\frac{\frac{-1}{3}}{\sqrt{x}}}, -\frac{1}{x \cdot 9}\right) \]
      12. metadata-eval99.3%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{\color{blue}{-0.3333333333333333}}{\sqrt{x}}, -\frac{1}{x \cdot 9}\right) \]
      13. *-commutative99.3%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, -\frac{1}{\color{blue}{9 \cdot x}}\right) \]
      14. associate-/r*99.3%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, -\color{blue}{\frac{\frac{1}{9}}{x}}\right) \]
      15. distribute-neg-frac99.3%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \color{blue}{\frac{-\frac{1}{9}}{x}}\right) \]
      16. metadata-eval99.3%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{-\color{blue}{0.1111111111111111}}{x}\right) \]
      17. metadata-eval99.3%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{\color{blue}{-0.1111111111111111}}{x}\right) \]
    3. Simplified99.3%

      \[\leadsto \color{blue}{1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{-0.1111111111111111}{x}\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around inf 91.5%

      \[\leadsto 1 + \color{blue}{-0.3333333333333333 \cdot \left(\sqrt{\frac{1}{x}} \cdot y\right)} \]
    6. Step-by-step derivation
      1. associate-*r*91.5%

        \[\leadsto 1 + \color{blue}{\left(-0.3333333333333333 \cdot \sqrt{\frac{1}{x}}\right) \cdot y} \]
      2. *-commutative91.5%

        \[\leadsto 1 + \color{blue}{\left(\sqrt{\frac{1}{x}} \cdot -0.3333333333333333\right)} \cdot y \]
      3. associate-*l*91.5%

        \[\leadsto 1 + \color{blue}{\sqrt{\frac{1}{x}} \cdot \left(-0.3333333333333333 \cdot y\right)} \]
    7. Simplified91.5%

      \[\leadsto 1 + \color{blue}{\sqrt{\frac{1}{x}} \cdot \left(-0.3333333333333333 \cdot y\right)} \]
    8. Step-by-step derivation
      1. associate-*r*91.5%

        \[\leadsto 1 + \color{blue}{\left(\sqrt{\frac{1}{x}} \cdot -0.3333333333333333\right) \cdot y} \]
      2. sqrt-div91.5%

        \[\leadsto 1 + \left(\color{blue}{\frac{\sqrt{1}}{\sqrt{x}}} \cdot -0.3333333333333333\right) \cdot y \]
      3. metadata-eval91.5%

        \[\leadsto 1 + \left(\frac{\color{blue}{1}}{\sqrt{x}} \cdot -0.3333333333333333\right) \cdot y \]
      4. associate-*l/91.5%

        \[\leadsto 1 + \color{blue}{\frac{1 \cdot -0.3333333333333333}{\sqrt{x}}} \cdot y \]
      5. metadata-eval91.5%

        \[\leadsto 1 + \frac{\color{blue}{-0.3333333333333333}}{\sqrt{x}} \cdot y \]
      6. metadata-eval91.5%

        \[\leadsto 1 + \frac{\color{blue}{\frac{0.3333333333333333}{-1}}}{\sqrt{x}} \cdot y \]
      7. associate-/r*91.5%

        \[\leadsto 1 + \color{blue}{\frac{0.3333333333333333}{-1 \cdot \sqrt{x}}} \cdot y \]
      8. neg-mul-191.5%

        \[\leadsto 1 + \frac{0.3333333333333333}{\color{blue}{-\sqrt{x}}} \cdot y \]
      9. un-div-inv91.5%

        \[\leadsto 1 + \color{blue}{\left(0.3333333333333333 \cdot \frac{1}{-\sqrt{x}}\right)} \cdot y \]
    9. Applied egg-rr91.7%

      \[\leadsto 1 + \color{blue}{\frac{-y}{\sqrt{x} \cdot 3}} \]
    10. Step-by-step derivation
      1. frac-2neg91.7%

        \[\leadsto 1 + \color{blue}{\frac{-\left(-y\right)}{-\sqrt{x} \cdot 3}} \]
      2. div-inv91.6%

        \[\leadsto 1 + \color{blue}{\left(-\left(-y\right)\right) \cdot \frac{1}{-\sqrt{x} \cdot 3}} \]
      3. remove-double-neg91.6%

        \[\leadsto 1 + \color{blue}{y} \cdot \frac{1}{-\sqrt{x} \cdot 3} \]
      4. distribute-rgt-neg-in91.6%

        \[\leadsto 1 + y \cdot \frac{1}{\color{blue}{\sqrt{x} \cdot \left(-3\right)}} \]
      5. metadata-eval91.6%

        \[\leadsto 1 + y \cdot \frac{1}{\sqrt{x} \cdot \color{blue}{-3}} \]
    11. Applied egg-rr91.6%

      \[\leadsto 1 + \color{blue}{y \cdot \frac{1}{\sqrt{x} \cdot -3}} \]
    12. Step-by-step derivation
      1. expm1-log1p-u5.2%

        \[\leadsto 1 + \color{blue}{\mathsf{expm1}\left(\mathsf{log1p}\left(y \cdot \frac{1}{\sqrt{x} \cdot -3}\right)\right)} \]
      2. expm1-undefine5.2%

        \[\leadsto 1 + \color{blue}{\left(e^{\mathsf{log1p}\left(y \cdot \frac{1}{\sqrt{x} \cdot -3}\right)} - 1\right)} \]
      3. *-commutative5.2%

        \[\leadsto 1 + \left(e^{\mathsf{log1p}\left(y \cdot \frac{1}{\color{blue}{-3 \cdot \sqrt{x}}}\right)} - 1\right) \]
      4. associate-/r*5.2%

        \[\leadsto 1 + \left(e^{\mathsf{log1p}\left(y \cdot \color{blue}{\frac{\frac{1}{-3}}{\sqrt{x}}}\right)} - 1\right) \]
      5. metadata-eval5.2%

        \[\leadsto 1 + \left(e^{\mathsf{log1p}\left(y \cdot \frac{\color{blue}{-0.3333333333333333}}{\sqrt{x}}\right)} - 1\right) \]
    13. Applied egg-rr5.2%

      \[\leadsto 1 + \color{blue}{\left(e^{\mathsf{log1p}\left(y \cdot \frac{-0.3333333333333333}{\sqrt{x}}\right)} - 1\right)} \]
    14. Simplified91.7%

      \[\leadsto 1 + \color{blue}{\frac{\frac{y}{-3}}{\sqrt{x}}} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification94.7%

    \[\leadsto \begin{array}{l} \mathbf{if}\;y \leq -2.9 \cdot 10^{+84}:\\ \;\;\;\;1 + \frac{\frac{y}{\sqrt{x}}}{-3}\\ \mathbf{elif}\;y \leq 9.6 \cdot 10^{+45}:\\ \;\;\;\;1 - {\left(x \cdot 9\right)}^{-1}\\ \mathbf{else}:\\ \;\;\;\;1 + \frac{\frac{y}{-3}}{\sqrt{x}}\\ \end{array} \]
  5. Add Preprocessing

Alternative 6: 94.8% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;y \leq -2.9 \cdot 10^{+84}:\\ \;\;\;\;1 + \frac{\frac{y}{\sqrt{x}}}{-3}\\ \mathbf{elif}\;y \leq 1.5 \cdot 10^{+48}:\\ \;\;\;\;1 - {\left(x \cdot 9\right)}^{-1}\\ \mathbf{else}:\\ \;\;\;\;1 - \frac{y}{\sqrt{x \cdot 9}}\\ \end{array} \end{array} \]
(FPCore (x y)
 :precision binary64
 (if (<= y -2.9e+84)
   (+ 1.0 (/ (/ y (sqrt x)) -3.0))
   (if (<= y 1.5e+48)
     (- 1.0 (pow (* x 9.0) -1.0))
     (- 1.0 (/ y (sqrt (* x 9.0)))))))
double code(double x, double y) {
	double tmp;
	if (y <= -2.9e+84) {
		tmp = 1.0 + ((y / sqrt(x)) / -3.0);
	} else if (y <= 1.5e+48) {
		tmp = 1.0 - pow((x * 9.0), -1.0);
	} else {
		tmp = 1.0 - (y / sqrt((x * 9.0)));
	}
	return tmp;
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8) :: tmp
    if (y <= (-2.9d+84)) then
        tmp = 1.0d0 + ((y / sqrt(x)) / (-3.0d0))
    else if (y <= 1.5d+48) then
        tmp = 1.0d0 - ((x * 9.0d0) ** (-1.0d0))
    else
        tmp = 1.0d0 - (y / sqrt((x * 9.0d0)))
    end if
    code = tmp
end function
public static double code(double x, double y) {
	double tmp;
	if (y <= -2.9e+84) {
		tmp = 1.0 + ((y / Math.sqrt(x)) / -3.0);
	} else if (y <= 1.5e+48) {
		tmp = 1.0 - Math.pow((x * 9.0), -1.0);
	} else {
		tmp = 1.0 - (y / Math.sqrt((x * 9.0)));
	}
	return tmp;
}
def code(x, y):
	tmp = 0
	if y <= -2.9e+84:
		tmp = 1.0 + ((y / math.sqrt(x)) / -3.0)
	elif y <= 1.5e+48:
		tmp = 1.0 - math.pow((x * 9.0), -1.0)
	else:
		tmp = 1.0 - (y / math.sqrt((x * 9.0)))
	return tmp
function code(x, y)
	tmp = 0.0
	if (y <= -2.9e+84)
		tmp = Float64(1.0 + Float64(Float64(y / sqrt(x)) / -3.0));
	elseif (y <= 1.5e+48)
		tmp = Float64(1.0 - (Float64(x * 9.0) ^ -1.0));
	else
		tmp = Float64(1.0 - Float64(y / sqrt(Float64(x * 9.0))));
	end
	return tmp
end
function tmp_2 = code(x, y)
	tmp = 0.0;
	if (y <= -2.9e+84)
		tmp = 1.0 + ((y / sqrt(x)) / -3.0);
	elseif (y <= 1.5e+48)
		tmp = 1.0 - ((x * 9.0) ^ -1.0);
	else
		tmp = 1.0 - (y / sqrt((x * 9.0)));
	end
	tmp_2 = tmp;
end
code[x_, y_] := If[LessEqual[y, -2.9e+84], N[(1.0 + N[(N[(y / N[Sqrt[x], $MachinePrecision]), $MachinePrecision] / -3.0), $MachinePrecision]), $MachinePrecision], If[LessEqual[y, 1.5e+48], N[(1.0 - N[Power[N[(x * 9.0), $MachinePrecision], -1.0], $MachinePrecision]), $MachinePrecision], N[(1.0 - N[(y / N[Sqrt[N[(x * 9.0), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;y \leq -2.9 \cdot 10^{+84}:\\
\;\;\;\;1 + \frac{\frac{y}{\sqrt{x}}}{-3}\\

\mathbf{elif}\;y \leq 1.5 \cdot 10^{+48}:\\
\;\;\;\;1 - {\left(x \cdot 9\right)}^{-1}\\

\mathbf{else}:\\
\;\;\;\;1 - \frac{y}{\sqrt{x \cdot 9}}\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if y < -2.89999999999999989e84

    1. Initial program 99.5%

      \[\left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{3 \cdot \sqrt{x}} \]
    2. Step-by-step derivation
      1. associate--l-99.5%

        \[\leadsto \color{blue}{1 - \left(\frac{1}{x \cdot 9} + \frac{y}{3 \cdot \sqrt{x}}\right)} \]
      2. sub-neg99.5%

        \[\leadsto \color{blue}{1 + \left(-\left(\frac{1}{x \cdot 9} + \frac{y}{3 \cdot \sqrt{x}}\right)\right)} \]
      3. +-commutative99.5%

        \[\leadsto 1 + \left(-\color{blue}{\left(\frac{y}{3 \cdot \sqrt{x}} + \frac{1}{x \cdot 9}\right)}\right) \]
      4. distribute-neg-in99.5%

        \[\leadsto 1 + \color{blue}{\left(\left(-\frac{y}{3 \cdot \sqrt{x}}\right) + \left(-\frac{1}{x \cdot 9}\right)\right)} \]
      5. distribute-frac-neg99.5%

        \[\leadsto 1 + \left(\color{blue}{\frac{-y}{3 \cdot \sqrt{x}}} + \left(-\frac{1}{x \cdot 9}\right)\right) \]
      6. sub-neg99.5%

        \[\leadsto 1 + \color{blue}{\left(\frac{-y}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right)} \]
      7. neg-mul-199.5%

        \[\leadsto 1 + \left(\frac{\color{blue}{-1 \cdot y}}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right) \]
      8. *-commutative99.5%

        \[\leadsto 1 + \left(\frac{\color{blue}{y \cdot -1}}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right) \]
      9. associate-/l*99.5%

        \[\leadsto 1 + \left(\color{blue}{y \cdot \frac{-1}{3 \cdot \sqrt{x}}} - \frac{1}{x \cdot 9}\right) \]
      10. fma-neg99.5%

        \[\leadsto 1 + \color{blue}{\mathsf{fma}\left(y, \frac{-1}{3 \cdot \sqrt{x}}, -\frac{1}{x \cdot 9}\right)} \]
      11. associate-/r*99.5%

        \[\leadsto 1 + \mathsf{fma}\left(y, \color{blue}{\frac{\frac{-1}{3}}{\sqrt{x}}}, -\frac{1}{x \cdot 9}\right) \]
      12. metadata-eval99.5%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{\color{blue}{-0.3333333333333333}}{\sqrt{x}}, -\frac{1}{x \cdot 9}\right) \]
      13. *-commutative99.5%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, -\frac{1}{\color{blue}{9 \cdot x}}\right) \]
      14. associate-/r*99.5%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, -\color{blue}{\frac{\frac{1}{9}}{x}}\right) \]
      15. distribute-neg-frac99.5%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \color{blue}{\frac{-\frac{1}{9}}{x}}\right) \]
      16. metadata-eval99.5%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{-\color{blue}{0.1111111111111111}}{x}\right) \]
      17. metadata-eval99.5%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{\color{blue}{-0.1111111111111111}}{x}\right) \]
    3. Simplified99.5%

      \[\leadsto \color{blue}{1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{-0.1111111111111111}{x}\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around inf 99.2%

      \[\leadsto 1 + \color{blue}{-0.3333333333333333 \cdot \left(\sqrt{\frac{1}{x}} \cdot y\right)} \]
    6. Step-by-step derivation
      1. associate-*r*99.5%

        \[\leadsto 1 + \color{blue}{\left(-0.3333333333333333 \cdot \sqrt{\frac{1}{x}}\right) \cdot y} \]
      2. *-commutative99.5%

        \[\leadsto 1 + \color{blue}{\left(\sqrt{\frac{1}{x}} \cdot -0.3333333333333333\right)} \cdot y \]
      3. associate-*l*99.3%

        \[\leadsto 1 + \color{blue}{\sqrt{\frac{1}{x}} \cdot \left(-0.3333333333333333 \cdot y\right)} \]
    7. Simplified99.3%

      \[\leadsto 1 + \color{blue}{\sqrt{\frac{1}{x}} \cdot \left(-0.3333333333333333 \cdot y\right)} \]
    8. Step-by-step derivation
      1. associate-*r*99.5%

        \[\leadsto 1 + \color{blue}{\left(\sqrt{\frac{1}{x}} \cdot -0.3333333333333333\right) \cdot y} \]
      2. sqrt-div99.5%

        \[\leadsto 1 + \left(\color{blue}{\frac{\sqrt{1}}{\sqrt{x}}} \cdot -0.3333333333333333\right) \cdot y \]
      3. metadata-eval99.5%

        \[\leadsto 1 + \left(\frac{\color{blue}{1}}{\sqrt{x}} \cdot -0.3333333333333333\right) \cdot y \]
      4. associate-*l/99.5%

        \[\leadsto 1 + \color{blue}{\frac{1 \cdot -0.3333333333333333}{\sqrt{x}}} \cdot y \]
      5. metadata-eval99.5%

        \[\leadsto 1 + \frac{\color{blue}{-0.3333333333333333}}{\sqrt{x}} \cdot y \]
      6. metadata-eval99.5%

        \[\leadsto 1 + \frac{\color{blue}{\frac{0.3333333333333333}{-1}}}{\sqrt{x}} \cdot y \]
      7. associate-/r*99.5%

        \[\leadsto 1 + \color{blue}{\frac{0.3333333333333333}{-1 \cdot \sqrt{x}}} \cdot y \]
      8. neg-mul-199.5%

        \[\leadsto 1 + \frac{0.3333333333333333}{\color{blue}{-\sqrt{x}}} \cdot y \]
      9. un-div-inv99.5%

        \[\leadsto 1 + \color{blue}{\left(0.3333333333333333 \cdot \frac{1}{-\sqrt{x}}\right)} \cdot y \]
    9. Applied egg-rr99.5%

      \[\leadsto 1 + \color{blue}{\frac{-y}{\sqrt{x} \cdot 3}} \]
    10. Step-by-step derivation
      1. frac-2neg99.5%

        \[\leadsto 1 + \color{blue}{\frac{-\left(-y\right)}{-\sqrt{x} \cdot 3}} \]
      2. div-inv99.5%

        \[\leadsto 1 + \color{blue}{\left(-\left(-y\right)\right) \cdot \frac{1}{-\sqrt{x} \cdot 3}} \]
      3. remove-double-neg99.5%

        \[\leadsto 1 + \color{blue}{y} \cdot \frac{1}{-\sqrt{x} \cdot 3} \]
      4. distribute-rgt-neg-in99.5%

        \[\leadsto 1 + y \cdot \frac{1}{\color{blue}{\sqrt{x} \cdot \left(-3\right)}} \]
      5. metadata-eval99.5%

        \[\leadsto 1 + y \cdot \frac{1}{\sqrt{x} \cdot \color{blue}{-3}} \]
    11. Applied egg-rr99.5%

      \[\leadsto 1 + \color{blue}{y \cdot \frac{1}{\sqrt{x} \cdot -3}} \]
    12. Step-by-step derivation
      1. un-div-inv99.5%

        \[\leadsto 1 + \color{blue}{\frac{y}{\sqrt{x} \cdot -3}} \]
      2. associate-/r*99.7%

        \[\leadsto 1 + \color{blue}{\frac{\frac{y}{\sqrt{x}}}{-3}} \]
    13. Applied egg-rr99.7%

      \[\leadsto 1 + \color{blue}{\frac{\frac{y}{\sqrt{x}}}{-3}} \]

    if -2.89999999999999989e84 < y < 1.5e48

    1. Initial program 99.8%

      \[\left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{3 \cdot \sqrt{x}} \]
    2. Step-by-step derivation
      1. associate--l-99.8%

        \[\leadsto \color{blue}{1 - \left(\frac{1}{x \cdot 9} + \frac{y}{3 \cdot \sqrt{x}}\right)} \]
      2. sub-neg99.8%

        \[\leadsto \color{blue}{1 + \left(-\left(\frac{1}{x \cdot 9} + \frac{y}{3 \cdot \sqrt{x}}\right)\right)} \]
      3. +-commutative99.8%

        \[\leadsto 1 + \left(-\color{blue}{\left(\frac{y}{3 \cdot \sqrt{x}} + \frac{1}{x \cdot 9}\right)}\right) \]
      4. distribute-neg-in99.8%

        \[\leadsto 1 + \color{blue}{\left(\left(-\frac{y}{3 \cdot \sqrt{x}}\right) + \left(-\frac{1}{x \cdot 9}\right)\right)} \]
      5. distribute-frac-neg99.8%

        \[\leadsto 1 + \left(\color{blue}{\frac{-y}{3 \cdot \sqrt{x}}} + \left(-\frac{1}{x \cdot 9}\right)\right) \]
      6. sub-neg99.8%

        \[\leadsto 1 + \color{blue}{\left(\frac{-y}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right)} \]
      7. neg-mul-199.8%

        \[\leadsto 1 + \left(\frac{\color{blue}{-1 \cdot y}}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right) \]
      8. *-commutative99.8%

        \[\leadsto 1 + \left(\frac{\color{blue}{y \cdot -1}}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right) \]
      9. associate-/l*99.8%

        \[\leadsto 1 + \left(\color{blue}{y \cdot \frac{-1}{3 \cdot \sqrt{x}}} - \frac{1}{x \cdot 9}\right) \]
      10. fma-neg99.8%

        \[\leadsto 1 + \color{blue}{\mathsf{fma}\left(y, \frac{-1}{3 \cdot \sqrt{x}}, -\frac{1}{x \cdot 9}\right)} \]
      11. associate-/r*99.8%

        \[\leadsto 1 + \mathsf{fma}\left(y, \color{blue}{\frac{\frac{-1}{3}}{\sqrt{x}}}, -\frac{1}{x \cdot 9}\right) \]
      12. metadata-eval99.8%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{\color{blue}{-0.3333333333333333}}{\sqrt{x}}, -\frac{1}{x \cdot 9}\right) \]
      13. *-commutative99.8%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, -\frac{1}{\color{blue}{9 \cdot x}}\right) \]
      14. associate-/r*99.7%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, -\color{blue}{\frac{\frac{1}{9}}{x}}\right) \]
      15. distribute-neg-frac99.7%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \color{blue}{\frac{-\frac{1}{9}}{x}}\right) \]
      16. metadata-eval99.7%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{-\color{blue}{0.1111111111111111}}{x}\right) \]
      17. metadata-eval99.7%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{\color{blue}{-0.1111111111111111}}{x}\right) \]
    3. Simplified99.7%

      \[\leadsto \color{blue}{1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{-0.1111111111111111}{x}\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around 0 94.2%

      \[\leadsto 1 + \color{blue}{\frac{-0.1111111111111111}{x}} \]
    6. Step-by-step derivation
      1. div-inv94.2%

        \[\leadsto 1 + \color{blue}{-0.1111111111111111 \cdot \frac{1}{x}} \]
      2. metadata-eval94.2%

        \[\leadsto 1 + \color{blue}{\left(-0.1111111111111111\right)} \cdot \frac{1}{x} \]
      3. cancel-sign-sub-inv94.2%

        \[\leadsto \color{blue}{1 - 0.1111111111111111 \cdot \frac{1}{x}} \]
      4. *-commutative94.2%

        \[\leadsto 1 - \color{blue}{\frac{1}{x} \cdot 0.1111111111111111} \]
      5. metadata-eval94.2%

        \[\leadsto 1 - \frac{1}{x} \cdot \color{blue}{\frac{1}{9}} \]
      6. div-inv94.3%

        \[\leadsto 1 - \color{blue}{\frac{\frac{1}{x}}{9}} \]
      7. associate-/r*94.3%

        \[\leadsto 1 - \color{blue}{\frac{1}{x \cdot 9}} \]
      8. add-sqr-sqrt94.0%

        \[\leadsto 1 - \color{blue}{\sqrt{\frac{1}{x \cdot 9}} \cdot \sqrt{\frac{1}{x \cdot 9}}} \]
      9. sqrt-unprod66.3%

        \[\leadsto 1 - \color{blue}{\sqrt{\frac{1}{x \cdot 9} \cdot \frac{1}{x \cdot 9}}} \]
      10. *-commutative66.3%

        \[\leadsto 1 - \sqrt{\frac{1}{\color{blue}{9 \cdot x}} \cdot \frac{1}{x \cdot 9}} \]
      11. associate-/r*66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{\frac{1}{9}}{x}} \cdot \frac{1}{x \cdot 9}} \]
      12. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{\color{blue}{0.1111111111111111}}{x} \cdot \frac{1}{x \cdot 9}} \]
      13. *-commutative66.3%

        \[\leadsto 1 - \sqrt{\frac{0.1111111111111111}{x} \cdot \frac{1}{\color{blue}{9 \cdot x}}} \]
      14. associate-/r*66.3%

        \[\leadsto 1 - \sqrt{\frac{0.1111111111111111}{x} \cdot \color{blue}{\frac{\frac{1}{9}}{x}}} \]
      15. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{0.1111111111111111}{x} \cdot \frac{\color{blue}{0.1111111111111111}}{x}} \]
      16. frac-times66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{0.1111111111111111 \cdot 0.1111111111111111}{x \cdot x}}} \]
      17. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{\color{blue}{0.012345679012345678}}{x \cdot x}} \]
      18. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{\color{blue}{-0.1111111111111111 \cdot -0.1111111111111111}}{x \cdot x}} \]
      19. frac-times66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{-0.1111111111111111}{x} \cdot \frac{-0.1111111111111111}{x}}} \]
      20. sqrt-unprod0.0%

        \[\leadsto 1 - \color{blue}{\sqrt{\frac{-0.1111111111111111}{x}} \cdot \sqrt{\frac{-0.1111111111111111}{x}}} \]
      21. add-sqr-sqrt40.4%

        \[\leadsto 1 - \color{blue}{\frac{-0.1111111111111111}{x}} \]
    7. Applied egg-rr40.4%

      \[\leadsto \color{blue}{1 - \frac{-0.1111111111111111}{x}} \]
    8. Step-by-step derivation
      1. add-sqr-sqrt0.0%

        \[\leadsto 1 - \color{blue}{\sqrt{\frac{-0.1111111111111111}{x}} \cdot \sqrt{\frac{-0.1111111111111111}{x}}} \]
      2. sqrt-unprod66.3%

        \[\leadsto 1 - \color{blue}{\sqrt{\frac{-0.1111111111111111}{x} \cdot \frac{-0.1111111111111111}{x}}} \]
      3. frac-times66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{-0.1111111111111111 \cdot -0.1111111111111111}{x \cdot x}}} \]
      4. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{\color{blue}{0.012345679012345678}}{x \cdot x}} \]
      5. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{\color{blue}{0.1111111111111111 \cdot 0.1111111111111111}}{x \cdot x}} \]
      6. frac-times66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{0.1111111111111111}{x} \cdot \frac{0.1111111111111111}{x}}} \]
      7. clear-num66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{1}{\frac{x}{0.1111111111111111}}} \cdot \frac{0.1111111111111111}{x}} \]
      8. clear-num66.3%

        \[\leadsto 1 - \sqrt{\frac{1}{\frac{x}{0.1111111111111111}} \cdot \color{blue}{\frac{1}{\frac{x}{0.1111111111111111}}}} \]
      9. frac-times66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{1 \cdot 1}{\frac{x}{0.1111111111111111} \cdot \frac{x}{0.1111111111111111}}}} \]
      10. div-inv66.3%

        \[\leadsto 1 - \sqrt{\frac{1 \cdot 1}{\color{blue}{\left(x \cdot \frac{1}{0.1111111111111111}\right)} \cdot \frac{x}{0.1111111111111111}}} \]
      11. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{1 \cdot 1}{\left(x \cdot \color{blue}{9}\right) \cdot \frac{x}{0.1111111111111111}}} \]
      12. div-inv66.3%

        \[\leadsto 1 - \sqrt{\frac{1 \cdot 1}{\left(x \cdot 9\right) \cdot \color{blue}{\left(x \cdot \frac{1}{0.1111111111111111}\right)}}} \]
      13. metadata-eval66.3%

        \[\leadsto 1 - \sqrt{\frac{1 \cdot 1}{\left(x \cdot 9\right) \cdot \left(x \cdot \color{blue}{9}\right)}} \]
      14. frac-times66.3%

        \[\leadsto 1 - \sqrt{\color{blue}{\frac{1}{x \cdot 9} \cdot \frac{1}{x \cdot 9}}} \]
      15. sqrt-unprod94.0%

        \[\leadsto 1 - \color{blue}{\sqrt{\frac{1}{x \cdot 9}} \cdot \sqrt{\frac{1}{x \cdot 9}}} \]
      16. add-sqr-sqrt94.3%

        \[\leadsto 1 - \color{blue}{\frac{1}{x \cdot 9}} \]
      17. inv-pow94.3%

        \[\leadsto 1 - \color{blue}{{\left(x \cdot 9\right)}^{-1}} \]
    9. Applied egg-rr94.3%

      \[\leadsto 1 - \color{blue}{{\left(x \cdot 9\right)}^{-1}} \]

    if 1.5e48 < y

    1. Initial program 99.6%

      \[\left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{3 \cdot \sqrt{x}} \]
    2. Add Preprocessing
    3. Step-by-step derivation
      1. *-commutative99.6%

        \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{\sqrt{x} \cdot 3}} \]
      2. metadata-eval99.6%

        \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\sqrt{x} \cdot \color{blue}{\sqrt{9}}} \]
      3. sqrt-prod99.6%

        \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{\sqrt{x \cdot 9}}} \]
      4. pow1/299.6%

        \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{{\left(x \cdot 9\right)}^{0.5}}} \]
    4. Applied egg-rr99.6%

      \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{{\left(x \cdot 9\right)}^{0.5}}} \]
    5. Step-by-step derivation
      1. unpow1/299.6%

        \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{\sqrt{x \cdot 9}}} \]
    6. Simplified99.6%

      \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{\sqrt{x \cdot 9}}} \]
    7. Taylor expanded in x around inf 91.8%

      \[\leadsto \color{blue}{1} - \frac{y}{\sqrt{x \cdot 9}} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification94.7%

    \[\leadsto \begin{array}{l} \mathbf{if}\;y \leq -2.9 \cdot 10^{+84}:\\ \;\;\;\;1 + \frac{\frac{y}{\sqrt{x}}}{-3}\\ \mathbf{elif}\;y \leq 1.5 \cdot 10^{+48}:\\ \;\;\;\;1 - {\left(x \cdot 9\right)}^{-1}\\ \mathbf{else}:\\ \;\;\;\;1 - \frac{y}{\sqrt{x \cdot 9}}\\ \end{array} \]
  5. Add Preprocessing

Alternative 7: 99.6% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;x \leq 16000000000000:\\ \;\;\;\;1 + \frac{-0.3333333333333333 \cdot \left(y \cdot \sqrt{x}\right) - 0.1111111111111111}{x}\\ \mathbf{else}:\\ \;\;\;\;1 - \frac{y}{\sqrt{x \cdot 9}}\\ \end{array} \end{array} \]
(FPCore (x y)
 :precision binary64
 (if (<= x 16000000000000.0)
   (+ 1.0 (/ (- (* -0.3333333333333333 (* y (sqrt x))) 0.1111111111111111) x))
   (- 1.0 (/ y (sqrt (* x 9.0))))))
double code(double x, double y) {
	double tmp;
	if (x <= 16000000000000.0) {
		tmp = 1.0 + (((-0.3333333333333333 * (y * sqrt(x))) - 0.1111111111111111) / x);
	} else {
		tmp = 1.0 - (y / sqrt((x * 9.0)));
	}
	return tmp;
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8) :: tmp
    if (x <= 16000000000000.0d0) then
        tmp = 1.0d0 + ((((-0.3333333333333333d0) * (y * sqrt(x))) - 0.1111111111111111d0) / x)
    else
        tmp = 1.0d0 - (y / sqrt((x * 9.0d0)))
    end if
    code = tmp
end function
public static double code(double x, double y) {
	double tmp;
	if (x <= 16000000000000.0) {
		tmp = 1.0 + (((-0.3333333333333333 * (y * Math.sqrt(x))) - 0.1111111111111111) / x);
	} else {
		tmp = 1.0 - (y / Math.sqrt((x * 9.0)));
	}
	return tmp;
}
def code(x, y):
	tmp = 0
	if x <= 16000000000000.0:
		tmp = 1.0 + (((-0.3333333333333333 * (y * math.sqrt(x))) - 0.1111111111111111) / x)
	else:
		tmp = 1.0 - (y / math.sqrt((x * 9.0)))
	return tmp
function code(x, y)
	tmp = 0.0
	if (x <= 16000000000000.0)
		tmp = Float64(1.0 + Float64(Float64(Float64(-0.3333333333333333 * Float64(y * sqrt(x))) - 0.1111111111111111) / x));
	else
		tmp = Float64(1.0 - Float64(y / sqrt(Float64(x * 9.0))));
	end
	return tmp
end
function tmp_2 = code(x, y)
	tmp = 0.0;
	if (x <= 16000000000000.0)
		tmp = 1.0 + (((-0.3333333333333333 * (y * sqrt(x))) - 0.1111111111111111) / x);
	else
		tmp = 1.0 - (y / sqrt((x * 9.0)));
	end
	tmp_2 = tmp;
end
code[x_, y_] := If[LessEqual[x, 16000000000000.0], N[(1.0 + N[(N[(N[(-0.3333333333333333 * N[(y * N[Sqrt[x], $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - 0.1111111111111111), $MachinePrecision] / x), $MachinePrecision]), $MachinePrecision], N[(1.0 - N[(y / N[Sqrt[N[(x * 9.0), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;x \leq 16000000000000:\\
\;\;\;\;1 + \frac{-0.3333333333333333 \cdot \left(y \cdot \sqrt{x}\right) - 0.1111111111111111}{x}\\

\mathbf{else}:\\
\;\;\;\;1 - \frac{y}{\sqrt{x \cdot 9}}\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if x < 1.6e13

    1. Initial program 99.7%

      \[\left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{3 \cdot \sqrt{x}} \]
    2. Step-by-step derivation
      1. associate--l-99.7%

        \[\leadsto \color{blue}{1 - \left(\frac{1}{x \cdot 9} + \frac{y}{3 \cdot \sqrt{x}}\right)} \]
      2. sub-neg99.7%

        \[\leadsto \color{blue}{1 + \left(-\left(\frac{1}{x \cdot 9} + \frac{y}{3 \cdot \sqrt{x}}\right)\right)} \]
      3. +-commutative99.7%

        \[\leadsto 1 + \left(-\color{blue}{\left(\frac{y}{3 \cdot \sqrt{x}} + \frac{1}{x \cdot 9}\right)}\right) \]
      4. distribute-neg-in99.7%

        \[\leadsto 1 + \color{blue}{\left(\left(-\frac{y}{3 \cdot \sqrt{x}}\right) + \left(-\frac{1}{x \cdot 9}\right)\right)} \]
      5. distribute-frac-neg99.7%

        \[\leadsto 1 + \left(\color{blue}{\frac{-y}{3 \cdot \sqrt{x}}} + \left(-\frac{1}{x \cdot 9}\right)\right) \]
      6. sub-neg99.7%

        \[\leadsto 1 + \color{blue}{\left(\frac{-y}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right)} \]
      7. neg-mul-199.7%

        \[\leadsto 1 + \left(\frac{\color{blue}{-1 \cdot y}}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right) \]
      8. *-commutative99.7%

        \[\leadsto 1 + \left(\frac{\color{blue}{y \cdot -1}}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right) \]
      9. associate-/l*99.7%

        \[\leadsto 1 + \left(\color{blue}{y \cdot \frac{-1}{3 \cdot \sqrt{x}}} - \frac{1}{x \cdot 9}\right) \]
      10. fma-neg99.7%

        \[\leadsto 1 + \color{blue}{\mathsf{fma}\left(y, \frac{-1}{3 \cdot \sqrt{x}}, -\frac{1}{x \cdot 9}\right)} \]
      11. associate-/r*99.6%

        \[\leadsto 1 + \mathsf{fma}\left(y, \color{blue}{\frac{\frac{-1}{3}}{\sqrt{x}}}, -\frac{1}{x \cdot 9}\right) \]
      12. metadata-eval99.6%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{\color{blue}{-0.3333333333333333}}{\sqrt{x}}, -\frac{1}{x \cdot 9}\right) \]
      13. *-commutative99.6%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, -\frac{1}{\color{blue}{9 \cdot x}}\right) \]
      14. associate-/r*99.5%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, -\color{blue}{\frac{\frac{1}{9}}{x}}\right) \]
      15. distribute-neg-frac99.5%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \color{blue}{\frac{-\frac{1}{9}}{x}}\right) \]
      16. metadata-eval99.5%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{-\color{blue}{0.1111111111111111}}{x}\right) \]
      17. metadata-eval99.5%

        \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{\color{blue}{-0.1111111111111111}}{x}\right) \]
    3. Simplified99.5%

      \[\leadsto \color{blue}{1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{-0.1111111111111111}{x}\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in x around 0 99.5%

      \[\leadsto 1 + \color{blue}{\frac{-0.3333333333333333 \cdot \left(\sqrt{x} \cdot y\right) - 0.1111111111111111}{x}} \]

    if 1.6e13 < x

    1. Initial program 99.8%

      \[\left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{3 \cdot \sqrt{x}} \]
    2. Add Preprocessing
    3. Step-by-step derivation
      1. *-commutative99.8%

        \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{\sqrt{x} \cdot 3}} \]
      2. metadata-eval99.8%

        \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\sqrt{x} \cdot \color{blue}{\sqrt{9}}} \]
      3. sqrt-prod99.8%

        \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{\sqrt{x \cdot 9}}} \]
      4. pow1/299.8%

        \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{{\left(x \cdot 9\right)}^{0.5}}} \]
    4. Applied egg-rr99.8%

      \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{{\left(x \cdot 9\right)}^{0.5}}} \]
    5. Step-by-step derivation
      1. unpow1/299.8%

        \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{\sqrt{x \cdot 9}}} \]
    6. Simplified99.8%

      \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{\sqrt{x \cdot 9}}} \]
    7. Taylor expanded in x around inf 99.8%

      \[\leadsto \color{blue}{1} - \frac{y}{\sqrt{x \cdot 9}} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification99.6%

    \[\leadsto \begin{array}{l} \mathbf{if}\;x \leq 16000000000000:\\ \;\;\;\;1 + \frac{-0.3333333333333333 \cdot \left(y \cdot \sqrt{x}\right) - 0.1111111111111111}{x}\\ \mathbf{else}:\\ \;\;\;\;1 - \frac{y}{\sqrt{x \cdot 9}}\\ \end{array} \]
  5. Add Preprocessing

Alternative 8: 98.3% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;x \leq 9.5 \cdot 10^{-5}:\\ \;\;\;\;-0.3333333333333333 \cdot \frac{y}{\sqrt{x}} + \frac{-0.1111111111111111}{x}\\ \mathbf{else}:\\ \;\;\;\;1 - \frac{y}{\sqrt{x \cdot 9}}\\ \end{array} \end{array} \]
(FPCore (x y)
 :precision binary64
 (if (<= x 9.5e-5)
   (+ (* -0.3333333333333333 (/ y (sqrt x))) (/ -0.1111111111111111 x))
   (- 1.0 (/ y (sqrt (* x 9.0))))))
double code(double x, double y) {
	double tmp;
	if (x <= 9.5e-5) {
		tmp = (-0.3333333333333333 * (y / sqrt(x))) + (-0.1111111111111111 / x);
	} else {
		tmp = 1.0 - (y / sqrt((x * 9.0)));
	}
	return tmp;
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8) :: tmp
    if (x <= 9.5d-5) then
        tmp = ((-0.3333333333333333d0) * (y / sqrt(x))) + ((-0.1111111111111111d0) / x)
    else
        tmp = 1.0d0 - (y / sqrt((x * 9.0d0)))
    end if
    code = tmp
end function
public static double code(double x, double y) {
	double tmp;
	if (x <= 9.5e-5) {
		tmp = (-0.3333333333333333 * (y / Math.sqrt(x))) + (-0.1111111111111111 / x);
	} else {
		tmp = 1.0 - (y / Math.sqrt((x * 9.0)));
	}
	return tmp;
}
def code(x, y):
	tmp = 0
	if x <= 9.5e-5:
		tmp = (-0.3333333333333333 * (y / math.sqrt(x))) + (-0.1111111111111111 / x)
	else:
		tmp = 1.0 - (y / math.sqrt((x * 9.0)))
	return tmp
function code(x, y)
	tmp = 0.0
	if (x <= 9.5e-5)
		tmp = Float64(Float64(-0.3333333333333333 * Float64(y / sqrt(x))) + Float64(-0.1111111111111111 / x));
	else
		tmp = Float64(1.0 - Float64(y / sqrt(Float64(x * 9.0))));
	end
	return tmp
end
function tmp_2 = code(x, y)
	tmp = 0.0;
	if (x <= 9.5e-5)
		tmp = (-0.3333333333333333 * (y / sqrt(x))) + (-0.1111111111111111 / x);
	else
		tmp = 1.0 - (y / sqrt((x * 9.0)));
	end
	tmp_2 = tmp;
end
code[x_, y_] := If[LessEqual[x, 9.5e-5], N[(N[(-0.3333333333333333 * N[(y / N[Sqrt[x], $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(-0.1111111111111111 / x), $MachinePrecision]), $MachinePrecision], N[(1.0 - N[(y / N[Sqrt[N[(x * 9.0), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;x \leq 9.5 \cdot 10^{-5}:\\
\;\;\;\;-0.3333333333333333 \cdot \frac{y}{\sqrt{x}} + \frac{-0.1111111111111111}{x}\\

\mathbf{else}:\\
\;\;\;\;1 - \frac{y}{\sqrt{x \cdot 9}}\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if x < 9.5000000000000005e-5

    1. Initial program 99.6%

      \[\left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{3 \cdot \sqrt{x}} \]
    2. Step-by-step derivation
      1. sub-neg99.6%

        \[\leadsto \color{blue}{\left(1 - \frac{1}{x \cdot 9}\right) + \left(-\frac{y}{3 \cdot \sqrt{x}}\right)} \]
      2. *-commutative99.6%

        \[\leadsto \left(1 - \frac{1}{\color{blue}{9 \cdot x}}\right) + \left(-\frac{y}{3 \cdot \sqrt{x}}\right) \]
      3. associate-/r*99.5%

        \[\leadsto \left(1 - \color{blue}{\frac{\frac{1}{9}}{x}}\right) + \left(-\frac{y}{3 \cdot \sqrt{x}}\right) \]
      4. metadata-eval99.5%

        \[\leadsto \left(1 - \frac{\color{blue}{0.1111111111111111}}{x}\right) + \left(-\frac{y}{3 \cdot \sqrt{x}}\right) \]
      5. distribute-frac-neg99.5%

        \[\leadsto \left(1 - \frac{0.1111111111111111}{x}\right) + \color{blue}{\frac{-y}{3 \cdot \sqrt{x}}} \]
      6. neg-mul-199.5%

        \[\leadsto \left(1 - \frac{0.1111111111111111}{x}\right) + \frac{\color{blue}{-1 \cdot y}}{3 \cdot \sqrt{x}} \]
      7. times-frac99.5%

        \[\leadsto \left(1 - \frac{0.1111111111111111}{x}\right) + \color{blue}{\frac{-1}{3} \cdot \frac{y}{\sqrt{x}}} \]
      8. metadata-eval99.5%

        \[\leadsto \left(1 - \frac{0.1111111111111111}{x}\right) + \color{blue}{-0.3333333333333333} \cdot \frac{y}{\sqrt{x}} \]
    3. Simplified99.5%

      \[\leadsto \color{blue}{\left(1 - \frac{0.1111111111111111}{x}\right) + -0.3333333333333333 \cdot \frac{y}{\sqrt{x}}} \]
    4. Add Preprocessing
    5. Taylor expanded in x around inf 99.5%

      \[\leadsto \color{blue}{\left(1 - 0.1111111111111111 \cdot \frac{1}{x}\right)} + -0.3333333333333333 \cdot \frac{y}{\sqrt{x}} \]
    6. Step-by-step derivation
      1. *-commutative99.5%

        \[\leadsto \left(1 - \color{blue}{\frac{1}{x} \cdot 0.1111111111111111}\right) + -0.3333333333333333 \cdot \frac{y}{\sqrt{x}} \]
      2. metadata-eval99.5%

        \[\leadsto \left(1 - \frac{1}{x} \cdot \color{blue}{\frac{1}{9}}\right) + -0.3333333333333333 \cdot \frac{y}{\sqrt{x}} \]
      3. div-inv99.6%

        \[\leadsto \left(1 - \color{blue}{\frac{\frac{1}{x}}{9}}\right) + -0.3333333333333333 \cdot \frac{y}{\sqrt{x}} \]
    7. Applied egg-rr99.6%

      \[\leadsto \left(1 - \color{blue}{\frac{\frac{1}{x}}{9}}\right) + -0.3333333333333333 \cdot \frac{y}{\sqrt{x}} \]
    8. Taylor expanded in x around 0 99.1%

      \[\leadsto \color{blue}{\frac{-0.1111111111111111}{x}} + -0.3333333333333333 \cdot \frac{y}{\sqrt{x}} \]

    if 9.5000000000000005e-5 < x

    1. Initial program 99.8%

      \[\left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{3 \cdot \sqrt{x}} \]
    2. Add Preprocessing
    3. Step-by-step derivation
      1. *-commutative99.8%

        \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{\sqrt{x} \cdot 3}} \]
      2. metadata-eval99.8%

        \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\sqrt{x} \cdot \color{blue}{\sqrt{9}}} \]
      3. sqrt-prod99.8%

        \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{\sqrt{x \cdot 9}}} \]
      4. pow1/299.8%

        \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{{\left(x \cdot 9\right)}^{0.5}}} \]
    4. Applied egg-rr99.8%

      \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{{\left(x \cdot 9\right)}^{0.5}}} \]
    5. Step-by-step derivation
      1. unpow1/299.8%

        \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{\sqrt{x \cdot 9}}} \]
    6. Simplified99.8%

      \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{\sqrt{x \cdot 9}}} \]
    7. Taylor expanded in x around inf 99.7%

      \[\leadsto \color{blue}{1} - \frac{y}{\sqrt{x \cdot 9}} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification99.4%

    \[\leadsto \begin{array}{l} \mathbf{if}\;x \leq 9.5 \cdot 10^{-5}:\\ \;\;\;\;-0.3333333333333333 \cdot \frac{y}{\sqrt{x}} + \frac{-0.1111111111111111}{x}\\ \mathbf{else}:\\ \;\;\;\;1 - \frac{y}{\sqrt{x \cdot 9}}\\ \end{array} \]
  5. Add Preprocessing

Alternative 9: 98.4% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_0 := \frac{y}{\sqrt{x \cdot 9}}\\ \mathbf{if}\;x \leq 9.5 \cdot 10^{-5}:\\ \;\;\;\;\frac{-0.1111111111111111}{x} - t\_0\\ \mathbf{else}:\\ \;\;\;\;1 - t\_0\\ \end{array} \end{array} \]
(FPCore (x y)
 :precision binary64
 (let* ((t_0 (/ y (sqrt (* x 9.0)))))
   (if (<= x 9.5e-5) (- (/ -0.1111111111111111 x) t_0) (- 1.0 t_0))))
double code(double x, double y) {
	double t_0 = y / sqrt((x * 9.0));
	double tmp;
	if (x <= 9.5e-5) {
		tmp = (-0.1111111111111111 / x) - t_0;
	} else {
		tmp = 1.0 - t_0;
	}
	return tmp;
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8) :: t_0
    real(8) :: tmp
    t_0 = y / sqrt((x * 9.0d0))
    if (x <= 9.5d-5) then
        tmp = ((-0.1111111111111111d0) / x) - t_0
    else
        tmp = 1.0d0 - t_0
    end if
    code = tmp
end function
public static double code(double x, double y) {
	double t_0 = y / Math.sqrt((x * 9.0));
	double tmp;
	if (x <= 9.5e-5) {
		tmp = (-0.1111111111111111 / x) - t_0;
	} else {
		tmp = 1.0 - t_0;
	}
	return tmp;
}
def code(x, y):
	t_0 = y / math.sqrt((x * 9.0))
	tmp = 0
	if x <= 9.5e-5:
		tmp = (-0.1111111111111111 / x) - t_0
	else:
		tmp = 1.0 - t_0
	return tmp
function code(x, y)
	t_0 = Float64(y / sqrt(Float64(x * 9.0)))
	tmp = 0.0
	if (x <= 9.5e-5)
		tmp = Float64(Float64(-0.1111111111111111 / x) - t_0);
	else
		tmp = Float64(1.0 - t_0);
	end
	return tmp
end
function tmp_2 = code(x, y)
	t_0 = y / sqrt((x * 9.0));
	tmp = 0.0;
	if (x <= 9.5e-5)
		tmp = (-0.1111111111111111 / x) - t_0;
	else
		tmp = 1.0 - t_0;
	end
	tmp_2 = tmp;
end
code[x_, y_] := Block[{t$95$0 = N[(y / N[Sqrt[N[(x * 9.0), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]}, If[LessEqual[x, 9.5e-5], N[(N[(-0.1111111111111111 / x), $MachinePrecision] - t$95$0), $MachinePrecision], N[(1.0 - t$95$0), $MachinePrecision]]]
\begin{array}{l}

\\
\begin{array}{l}
t_0 := \frac{y}{\sqrt{x \cdot 9}}\\
\mathbf{if}\;x \leq 9.5 \cdot 10^{-5}:\\
\;\;\;\;\frac{-0.1111111111111111}{x} - t\_0\\

\mathbf{else}:\\
\;\;\;\;1 - t\_0\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if x < 9.5000000000000005e-5

    1. Initial program 99.6%

      \[\left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{3 \cdot \sqrt{x}} \]
    2. Add Preprocessing
    3. Step-by-step derivation
      1. *-commutative99.6%

        \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{\sqrt{x} \cdot 3}} \]
      2. metadata-eval99.6%

        \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\sqrt{x} \cdot \color{blue}{\sqrt{9}}} \]
      3. sqrt-prod99.7%

        \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{\sqrt{x \cdot 9}}} \]
      4. pow1/299.7%

        \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{{\left(x \cdot 9\right)}^{0.5}}} \]
    4. Applied egg-rr99.7%

      \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{{\left(x \cdot 9\right)}^{0.5}}} \]
    5. Step-by-step derivation
      1. unpow1/299.7%

        \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{\sqrt{x \cdot 9}}} \]
    6. Simplified99.7%

      \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{\sqrt{x \cdot 9}}} \]
    7. Taylor expanded in x around 0 99.2%

      \[\leadsto \color{blue}{\frac{-0.1111111111111111}{x}} - \frac{y}{\sqrt{x \cdot 9}} \]

    if 9.5000000000000005e-5 < x

    1. Initial program 99.8%

      \[\left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{3 \cdot \sqrt{x}} \]
    2. Add Preprocessing
    3. Step-by-step derivation
      1. *-commutative99.8%

        \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{\sqrt{x} \cdot 3}} \]
      2. metadata-eval99.8%

        \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\sqrt{x} \cdot \color{blue}{\sqrt{9}}} \]
      3. sqrt-prod99.8%

        \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{\sqrt{x \cdot 9}}} \]
      4. pow1/299.8%

        \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{{\left(x \cdot 9\right)}^{0.5}}} \]
    4. Applied egg-rr99.8%

      \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{{\left(x \cdot 9\right)}^{0.5}}} \]
    5. Step-by-step derivation
      1. unpow1/299.8%

        \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{\sqrt{x \cdot 9}}} \]
    6. Simplified99.8%

      \[\leadsto \left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{\color{blue}{\sqrt{x \cdot 9}}} \]
    7. Taylor expanded in x around inf 99.7%

      \[\leadsto \color{blue}{1} - \frac{y}{\sqrt{x \cdot 9}} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification99.4%

    \[\leadsto \begin{array}{l} \mathbf{if}\;x \leq 9.5 \cdot 10^{-5}:\\ \;\;\;\;\frac{-0.1111111111111111}{x} - \frac{y}{\sqrt{x \cdot 9}}\\ \mathbf{else}:\\ \;\;\;\;1 - \frac{y}{\sqrt{x \cdot 9}}\\ \end{array} \]
  5. Add Preprocessing

Alternative 10: 99.6% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \left(1 - \frac{0.1111111111111111}{x}\right) + -0.3333333333333333 \cdot \frac{y}{\sqrt{x}} \end{array} \]
(FPCore (x y)
 :precision binary64
 (+ (- 1.0 (/ 0.1111111111111111 x)) (* -0.3333333333333333 (/ y (sqrt x)))))
double code(double x, double y) {
	return (1.0 - (0.1111111111111111 / x)) + (-0.3333333333333333 * (y / sqrt(x)));
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = (1.0d0 - (0.1111111111111111d0 / x)) + ((-0.3333333333333333d0) * (y / sqrt(x)))
end function
public static double code(double x, double y) {
	return (1.0 - (0.1111111111111111 / x)) + (-0.3333333333333333 * (y / Math.sqrt(x)));
}
def code(x, y):
	return (1.0 - (0.1111111111111111 / x)) + (-0.3333333333333333 * (y / math.sqrt(x)))
function code(x, y)
	return Float64(Float64(1.0 - Float64(0.1111111111111111 / x)) + Float64(-0.3333333333333333 * Float64(y / sqrt(x))))
end
function tmp = code(x, y)
	tmp = (1.0 - (0.1111111111111111 / x)) + (-0.3333333333333333 * (y / sqrt(x)));
end
code[x_, y_] := N[(N[(1.0 - N[(0.1111111111111111 / x), $MachinePrecision]), $MachinePrecision] + N[(-0.3333333333333333 * N[(y / N[Sqrt[x], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\left(1 - \frac{0.1111111111111111}{x}\right) + -0.3333333333333333 \cdot \frac{y}{\sqrt{x}}
\end{array}
Derivation
  1. Initial program 99.7%

    \[\left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{3 \cdot \sqrt{x}} \]
  2. Step-by-step derivation
    1. sub-neg99.7%

      \[\leadsto \color{blue}{\left(1 - \frac{1}{x \cdot 9}\right) + \left(-\frac{y}{3 \cdot \sqrt{x}}\right)} \]
    2. *-commutative99.7%

      \[\leadsto \left(1 - \frac{1}{\color{blue}{9 \cdot x}}\right) + \left(-\frac{y}{3 \cdot \sqrt{x}}\right) \]
    3. associate-/r*99.6%

      \[\leadsto \left(1 - \color{blue}{\frac{\frac{1}{9}}{x}}\right) + \left(-\frac{y}{3 \cdot \sqrt{x}}\right) \]
    4. metadata-eval99.6%

      \[\leadsto \left(1 - \frac{\color{blue}{0.1111111111111111}}{x}\right) + \left(-\frac{y}{3 \cdot \sqrt{x}}\right) \]
    5. distribute-frac-neg99.6%

      \[\leadsto \left(1 - \frac{0.1111111111111111}{x}\right) + \color{blue}{\frac{-y}{3 \cdot \sqrt{x}}} \]
    6. neg-mul-199.6%

      \[\leadsto \left(1 - \frac{0.1111111111111111}{x}\right) + \frac{\color{blue}{-1 \cdot y}}{3 \cdot \sqrt{x}} \]
    7. times-frac99.6%

      \[\leadsto \left(1 - \frac{0.1111111111111111}{x}\right) + \color{blue}{\frac{-1}{3} \cdot \frac{y}{\sqrt{x}}} \]
    8. metadata-eval99.6%

      \[\leadsto \left(1 - \frac{0.1111111111111111}{x}\right) + \color{blue}{-0.3333333333333333} \cdot \frac{y}{\sqrt{x}} \]
  3. Simplified99.6%

    \[\leadsto \color{blue}{\left(1 - \frac{0.1111111111111111}{x}\right) + -0.3333333333333333 \cdot \frac{y}{\sqrt{x}}} \]
  4. Add Preprocessing
  5. Final simplification99.6%

    \[\leadsto \left(1 - \frac{0.1111111111111111}{x}\right) + -0.3333333333333333 \cdot \frac{y}{\sqrt{x}} \]
  6. Add Preprocessing

Alternative 11: 99.6% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \left(1 - \frac{0.1111111111111111}{x}\right) - \frac{y}{3 \cdot \sqrt{x}} \end{array} \]
(FPCore (x y)
 :precision binary64
 (- (- 1.0 (/ 0.1111111111111111 x)) (/ y (* 3.0 (sqrt x)))))
double code(double x, double y) {
	return (1.0 - (0.1111111111111111 / x)) - (y / (3.0 * sqrt(x)));
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = (1.0d0 - (0.1111111111111111d0 / x)) - (y / (3.0d0 * sqrt(x)))
end function
public static double code(double x, double y) {
	return (1.0 - (0.1111111111111111 / x)) - (y / (3.0 * Math.sqrt(x)));
}
def code(x, y):
	return (1.0 - (0.1111111111111111 / x)) - (y / (3.0 * math.sqrt(x)))
function code(x, y)
	return Float64(Float64(1.0 - Float64(0.1111111111111111 / x)) - Float64(y / Float64(3.0 * sqrt(x))))
end
function tmp = code(x, y)
	tmp = (1.0 - (0.1111111111111111 / x)) - (y / (3.0 * sqrt(x)));
end
code[x_, y_] := N[(N[(1.0 - N[(0.1111111111111111 / x), $MachinePrecision]), $MachinePrecision] - N[(y / N[(3.0 * N[Sqrt[x], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\left(1 - \frac{0.1111111111111111}{x}\right) - \frac{y}{3 \cdot \sqrt{x}}
\end{array}
Derivation
  1. Initial program 99.7%

    \[\left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{3 \cdot \sqrt{x}} \]
  2. Add Preprocessing
  3. Taylor expanded in x around 0 99.6%

    \[\leadsto \left(1 - \color{blue}{\frac{0.1111111111111111}{x}}\right) - \frac{y}{3 \cdot \sqrt{x}} \]
  4. Final simplification99.6%

    \[\leadsto \left(1 - \frac{0.1111111111111111}{x}\right) - \frac{y}{3 \cdot \sqrt{x}} \]
  5. Add Preprocessing

Alternative 12: 63.1% accurate, 1.1× speedup?

\[\begin{array}{l} \\ 1 - {\left(x \cdot 9\right)}^{-1} \end{array} \]
(FPCore (x y) :precision binary64 (- 1.0 (pow (* x 9.0) -1.0)))
double code(double x, double y) {
	return 1.0 - pow((x * 9.0), -1.0);
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = 1.0d0 - ((x * 9.0d0) ** (-1.0d0))
end function
public static double code(double x, double y) {
	return 1.0 - Math.pow((x * 9.0), -1.0);
}
def code(x, y):
	return 1.0 - math.pow((x * 9.0), -1.0)
function code(x, y)
	return Float64(1.0 - (Float64(x * 9.0) ^ -1.0))
end
function tmp = code(x, y)
	tmp = 1.0 - ((x * 9.0) ^ -1.0);
end
code[x_, y_] := N[(1.0 - N[Power[N[(x * 9.0), $MachinePrecision], -1.0], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
1 - {\left(x \cdot 9\right)}^{-1}
\end{array}
Derivation
  1. Initial program 99.7%

    \[\left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{3 \cdot \sqrt{x}} \]
  2. Step-by-step derivation
    1. associate--l-99.7%

      \[\leadsto \color{blue}{1 - \left(\frac{1}{x \cdot 9} + \frac{y}{3 \cdot \sqrt{x}}\right)} \]
    2. sub-neg99.7%

      \[\leadsto \color{blue}{1 + \left(-\left(\frac{1}{x \cdot 9} + \frac{y}{3 \cdot \sqrt{x}}\right)\right)} \]
    3. +-commutative99.7%

      \[\leadsto 1 + \left(-\color{blue}{\left(\frac{y}{3 \cdot \sqrt{x}} + \frac{1}{x \cdot 9}\right)}\right) \]
    4. distribute-neg-in99.7%

      \[\leadsto 1 + \color{blue}{\left(\left(-\frac{y}{3 \cdot \sqrt{x}}\right) + \left(-\frac{1}{x \cdot 9}\right)\right)} \]
    5. distribute-frac-neg99.7%

      \[\leadsto 1 + \left(\color{blue}{\frac{-y}{3 \cdot \sqrt{x}}} + \left(-\frac{1}{x \cdot 9}\right)\right) \]
    6. sub-neg99.7%

      \[\leadsto 1 + \color{blue}{\left(\frac{-y}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right)} \]
    7. neg-mul-199.7%

      \[\leadsto 1 + \left(\frac{\color{blue}{-1 \cdot y}}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right) \]
    8. *-commutative99.7%

      \[\leadsto 1 + \left(\frac{\color{blue}{y \cdot -1}}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right) \]
    9. associate-/l*99.7%

      \[\leadsto 1 + \left(\color{blue}{y \cdot \frac{-1}{3 \cdot \sqrt{x}}} - \frac{1}{x \cdot 9}\right) \]
    10. fma-neg99.7%

      \[\leadsto 1 + \color{blue}{\mathsf{fma}\left(y, \frac{-1}{3 \cdot \sqrt{x}}, -\frac{1}{x \cdot 9}\right)} \]
    11. associate-/r*99.6%

      \[\leadsto 1 + \mathsf{fma}\left(y, \color{blue}{\frac{\frac{-1}{3}}{\sqrt{x}}}, -\frac{1}{x \cdot 9}\right) \]
    12. metadata-eval99.6%

      \[\leadsto 1 + \mathsf{fma}\left(y, \frac{\color{blue}{-0.3333333333333333}}{\sqrt{x}}, -\frac{1}{x \cdot 9}\right) \]
    13. *-commutative99.6%

      \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, -\frac{1}{\color{blue}{9 \cdot x}}\right) \]
    14. associate-/r*99.6%

      \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, -\color{blue}{\frac{\frac{1}{9}}{x}}\right) \]
    15. distribute-neg-frac99.6%

      \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \color{blue}{\frac{-\frac{1}{9}}{x}}\right) \]
    16. metadata-eval99.6%

      \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{-\color{blue}{0.1111111111111111}}{x}\right) \]
    17. metadata-eval99.6%

      \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{\color{blue}{-0.1111111111111111}}{x}\right) \]
  3. Simplified99.6%

    \[\leadsto \color{blue}{1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{-0.1111111111111111}{x}\right)} \]
  4. Add Preprocessing
  5. Taylor expanded in y around 0 58.7%

    \[\leadsto 1 + \color{blue}{\frac{-0.1111111111111111}{x}} \]
  6. Step-by-step derivation
    1. div-inv58.7%

      \[\leadsto 1 + \color{blue}{-0.1111111111111111 \cdot \frac{1}{x}} \]
    2. metadata-eval58.7%

      \[\leadsto 1 + \color{blue}{\left(-0.1111111111111111\right)} \cdot \frac{1}{x} \]
    3. cancel-sign-sub-inv58.7%

      \[\leadsto \color{blue}{1 - 0.1111111111111111 \cdot \frac{1}{x}} \]
    4. *-commutative58.7%

      \[\leadsto 1 - \color{blue}{\frac{1}{x} \cdot 0.1111111111111111} \]
    5. metadata-eval58.7%

      \[\leadsto 1 - \frac{1}{x} \cdot \color{blue}{\frac{1}{9}} \]
    6. div-inv58.7%

      \[\leadsto 1 - \color{blue}{\frac{\frac{1}{x}}{9}} \]
    7. associate-/r*58.8%

      \[\leadsto 1 - \color{blue}{\frac{1}{x \cdot 9}} \]
    8. add-sqr-sqrt58.6%

      \[\leadsto 1 - \color{blue}{\sqrt{\frac{1}{x \cdot 9}} \cdot \sqrt{\frac{1}{x \cdot 9}}} \]
    9. sqrt-unprod44.0%

      \[\leadsto 1 - \color{blue}{\sqrt{\frac{1}{x \cdot 9} \cdot \frac{1}{x \cdot 9}}} \]
    10. *-commutative44.0%

      \[\leadsto 1 - \sqrt{\frac{1}{\color{blue}{9 \cdot x}} \cdot \frac{1}{x \cdot 9}} \]
    11. associate-/r*44.0%

      \[\leadsto 1 - \sqrt{\color{blue}{\frac{\frac{1}{9}}{x}} \cdot \frac{1}{x \cdot 9}} \]
    12. metadata-eval44.0%

      \[\leadsto 1 - \sqrt{\frac{\color{blue}{0.1111111111111111}}{x} \cdot \frac{1}{x \cdot 9}} \]
    13. *-commutative44.0%

      \[\leadsto 1 - \sqrt{\frac{0.1111111111111111}{x} \cdot \frac{1}{\color{blue}{9 \cdot x}}} \]
    14. associate-/r*44.0%

      \[\leadsto 1 - \sqrt{\frac{0.1111111111111111}{x} \cdot \color{blue}{\frac{\frac{1}{9}}{x}}} \]
    15. metadata-eval44.0%

      \[\leadsto 1 - \sqrt{\frac{0.1111111111111111}{x} \cdot \frac{\color{blue}{0.1111111111111111}}{x}} \]
    16. frac-times44.0%

      \[\leadsto 1 - \sqrt{\color{blue}{\frac{0.1111111111111111 \cdot 0.1111111111111111}{x \cdot x}}} \]
    17. metadata-eval44.0%

      \[\leadsto 1 - \sqrt{\frac{\color{blue}{0.012345679012345678}}{x \cdot x}} \]
    18. metadata-eval44.0%

      \[\leadsto 1 - \sqrt{\frac{\color{blue}{-0.1111111111111111 \cdot -0.1111111111111111}}{x \cdot x}} \]
    19. frac-times44.0%

      \[\leadsto 1 - \sqrt{\color{blue}{\frac{-0.1111111111111111}{x} \cdot \frac{-0.1111111111111111}{x}}} \]
    20. sqrt-unprod0.0%

      \[\leadsto 1 - \color{blue}{\sqrt{\frac{-0.1111111111111111}{x}} \cdot \sqrt{\frac{-0.1111111111111111}{x}}} \]
    21. add-sqr-sqrt26.0%

      \[\leadsto 1 - \color{blue}{\frac{-0.1111111111111111}{x}} \]
  7. Applied egg-rr26.0%

    \[\leadsto \color{blue}{1 - \frac{-0.1111111111111111}{x}} \]
  8. Step-by-step derivation
    1. add-sqr-sqrt0.0%

      \[\leadsto 1 - \color{blue}{\sqrt{\frac{-0.1111111111111111}{x}} \cdot \sqrt{\frac{-0.1111111111111111}{x}}} \]
    2. sqrt-unprod44.0%

      \[\leadsto 1 - \color{blue}{\sqrt{\frac{-0.1111111111111111}{x} \cdot \frac{-0.1111111111111111}{x}}} \]
    3. frac-times44.0%

      \[\leadsto 1 - \sqrt{\color{blue}{\frac{-0.1111111111111111 \cdot -0.1111111111111111}{x \cdot x}}} \]
    4. metadata-eval44.0%

      \[\leadsto 1 - \sqrt{\frac{\color{blue}{0.012345679012345678}}{x \cdot x}} \]
    5. metadata-eval44.0%

      \[\leadsto 1 - \sqrt{\frac{\color{blue}{0.1111111111111111 \cdot 0.1111111111111111}}{x \cdot x}} \]
    6. frac-times44.0%

      \[\leadsto 1 - \sqrt{\color{blue}{\frac{0.1111111111111111}{x} \cdot \frac{0.1111111111111111}{x}}} \]
    7. clear-num44.0%

      \[\leadsto 1 - \sqrt{\color{blue}{\frac{1}{\frac{x}{0.1111111111111111}}} \cdot \frac{0.1111111111111111}{x}} \]
    8. clear-num44.0%

      \[\leadsto 1 - \sqrt{\frac{1}{\frac{x}{0.1111111111111111}} \cdot \color{blue}{\frac{1}{\frac{x}{0.1111111111111111}}}} \]
    9. frac-times44.0%

      \[\leadsto 1 - \sqrt{\color{blue}{\frac{1 \cdot 1}{\frac{x}{0.1111111111111111} \cdot \frac{x}{0.1111111111111111}}}} \]
    10. div-inv44.0%

      \[\leadsto 1 - \sqrt{\frac{1 \cdot 1}{\color{blue}{\left(x \cdot \frac{1}{0.1111111111111111}\right)} \cdot \frac{x}{0.1111111111111111}}} \]
    11. metadata-eval44.0%

      \[\leadsto 1 - \sqrt{\frac{1 \cdot 1}{\left(x \cdot \color{blue}{9}\right) \cdot \frac{x}{0.1111111111111111}}} \]
    12. div-inv44.0%

      \[\leadsto 1 - \sqrt{\frac{1 \cdot 1}{\left(x \cdot 9\right) \cdot \color{blue}{\left(x \cdot \frac{1}{0.1111111111111111}\right)}}} \]
    13. metadata-eval44.0%

      \[\leadsto 1 - \sqrt{\frac{1 \cdot 1}{\left(x \cdot 9\right) \cdot \left(x \cdot \color{blue}{9}\right)}} \]
    14. frac-times44.0%

      \[\leadsto 1 - \sqrt{\color{blue}{\frac{1}{x \cdot 9} \cdot \frac{1}{x \cdot 9}}} \]
    15. sqrt-unprod58.6%

      \[\leadsto 1 - \color{blue}{\sqrt{\frac{1}{x \cdot 9}} \cdot \sqrt{\frac{1}{x \cdot 9}}} \]
    16. add-sqr-sqrt58.8%

      \[\leadsto 1 - \color{blue}{\frac{1}{x \cdot 9}} \]
    17. inv-pow58.8%

      \[\leadsto 1 - \color{blue}{{\left(x \cdot 9\right)}^{-1}} \]
  9. Applied egg-rr58.8%

    \[\leadsto 1 - \color{blue}{{\left(x \cdot 9\right)}^{-1}} \]
  10. Final simplification58.8%

    \[\leadsto 1 - {\left(x \cdot 9\right)}^{-1} \]
  11. Add Preprocessing

Alternative 13: 63.1% accurate, 16.1× speedup?

\[\begin{array}{l} \\ 1 + -0.1111111111111111 \cdot \frac{1}{x} \end{array} \]
(FPCore (x y) :precision binary64 (+ 1.0 (* -0.1111111111111111 (/ 1.0 x))))
double code(double x, double y) {
	return 1.0 + (-0.1111111111111111 * (1.0 / x));
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = 1.0d0 + ((-0.1111111111111111d0) * (1.0d0 / x))
end function
public static double code(double x, double y) {
	return 1.0 + (-0.1111111111111111 * (1.0 / x));
}
def code(x, y):
	return 1.0 + (-0.1111111111111111 * (1.0 / x))
function code(x, y)
	return Float64(1.0 + Float64(-0.1111111111111111 * Float64(1.0 / x)))
end
function tmp = code(x, y)
	tmp = 1.0 + (-0.1111111111111111 * (1.0 / x));
end
code[x_, y_] := N[(1.0 + N[(-0.1111111111111111 * N[(1.0 / x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
1 + -0.1111111111111111 \cdot \frac{1}{x}
\end{array}
Derivation
  1. Initial program 99.7%

    \[\left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{3 \cdot \sqrt{x}} \]
  2. Step-by-step derivation
    1. associate--l-99.7%

      \[\leadsto \color{blue}{1 - \left(\frac{1}{x \cdot 9} + \frac{y}{3 \cdot \sqrt{x}}\right)} \]
    2. sub-neg99.7%

      \[\leadsto \color{blue}{1 + \left(-\left(\frac{1}{x \cdot 9} + \frac{y}{3 \cdot \sqrt{x}}\right)\right)} \]
    3. +-commutative99.7%

      \[\leadsto 1 + \left(-\color{blue}{\left(\frac{y}{3 \cdot \sqrt{x}} + \frac{1}{x \cdot 9}\right)}\right) \]
    4. distribute-neg-in99.7%

      \[\leadsto 1 + \color{blue}{\left(\left(-\frac{y}{3 \cdot \sqrt{x}}\right) + \left(-\frac{1}{x \cdot 9}\right)\right)} \]
    5. distribute-frac-neg99.7%

      \[\leadsto 1 + \left(\color{blue}{\frac{-y}{3 \cdot \sqrt{x}}} + \left(-\frac{1}{x \cdot 9}\right)\right) \]
    6. sub-neg99.7%

      \[\leadsto 1 + \color{blue}{\left(\frac{-y}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right)} \]
    7. neg-mul-199.7%

      \[\leadsto 1 + \left(\frac{\color{blue}{-1 \cdot y}}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right) \]
    8. *-commutative99.7%

      \[\leadsto 1 + \left(\frac{\color{blue}{y \cdot -1}}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right) \]
    9. associate-/l*99.7%

      \[\leadsto 1 + \left(\color{blue}{y \cdot \frac{-1}{3 \cdot \sqrt{x}}} - \frac{1}{x \cdot 9}\right) \]
    10. fma-neg99.7%

      \[\leadsto 1 + \color{blue}{\mathsf{fma}\left(y, \frac{-1}{3 \cdot \sqrt{x}}, -\frac{1}{x \cdot 9}\right)} \]
    11. associate-/r*99.6%

      \[\leadsto 1 + \mathsf{fma}\left(y, \color{blue}{\frac{\frac{-1}{3}}{\sqrt{x}}}, -\frac{1}{x \cdot 9}\right) \]
    12. metadata-eval99.6%

      \[\leadsto 1 + \mathsf{fma}\left(y, \frac{\color{blue}{-0.3333333333333333}}{\sqrt{x}}, -\frac{1}{x \cdot 9}\right) \]
    13. *-commutative99.6%

      \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, -\frac{1}{\color{blue}{9 \cdot x}}\right) \]
    14. associate-/r*99.6%

      \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, -\color{blue}{\frac{\frac{1}{9}}{x}}\right) \]
    15. distribute-neg-frac99.6%

      \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \color{blue}{\frac{-\frac{1}{9}}{x}}\right) \]
    16. metadata-eval99.6%

      \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{-\color{blue}{0.1111111111111111}}{x}\right) \]
    17. metadata-eval99.6%

      \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{\color{blue}{-0.1111111111111111}}{x}\right) \]
  3. Simplified99.6%

    \[\leadsto \color{blue}{1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{-0.1111111111111111}{x}\right)} \]
  4. Add Preprocessing
  5. Taylor expanded in y around 0 58.7%

    \[\leadsto 1 + \color{blue}{\frac{-0.1111111111111111}{x}} \]
  6. Step-by-step derivation
    1. clear-num58.7%

      \[\leadsto 1 + \color{blue}{\frac{1}{\frac{x}{-0.1111111111111111}}} \]
    2. associate-/r/58.7%

      \[\leadsto 1 + \color{blue}{\frac{1}{x} \cdot -0.1111111111111111} \]
  7. Applied egg-rr58.7%

    \[\leadsto 1 + \color{blue}{\frac{1}{x} \cdot -0.1111111111111111} \]
  8. Final simplification58.7%

    \[\leadsto 1 + -0.1111111111111111 \cdot \frac{1}{x} \]
  9. Add Preprocessing

Alternative 14: 63.1% accurate, 22.6× speedup?

\[\begin{array}{l} \\ 1 + \frac{-0.1111111111111111}{x} \end{array} \]
(FPCore (x y) :precision binary64 (+ 1.0 (/ -0.1111111111111111 x)))
double code(double x, double y) {
	return 1.0 + (-0.1111111111111111 / x);
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = 1.0d0 + ((-0.1111111111111111d0) / x)
end function
public static double code(double x, double y) {
	return 1.0 + (-0.1111111111111111 / x);
}
def code(x, y):
	return 1.0 + (-0.1111111111111111 / x)
function code(x, y)
	return Float64(1.0 + Float64(-0.1111111111111111 / x))
end
function tmp = code(x, y)
	tmp = 1.0 + (-0.1111111111111111 / x);
end
code[x_, y_] := N[(1.0 + N[(-0.1111111111111111 / x), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
1 + \frac{-0.1111111111111111}{x}
\end{array}
Derivation
  1. Initial program 99.7%

    \[\left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{3 \cdot \sqrt{x}} \]
  2. Step-by-step derivation
    1. associate--l-99.7%

      \[\leadsto \color{blue}{1 - \left(\frac{1}{x \cdot 9} + \frac{y}{3 \cdot \sqrt{x}}\right)} \]
    2. sub-neg99.7%

      \[\leadsto \color{blue}{1 + \left(-\left(\frac{1}{x \cdot 9} + \frac{y}{3 \cdot \sqrt{x}}\right)\right)} \]
    3. +-commutative99.7%

      \[\leadsto 1 + \left(-\color{blue}{\left(\frac{y}{3 \cdot \sqrt{x}} + \frac{1}{x \cdot 9}\right)}\right) \]
    4. distribute-neg-in99.7%

      \[\leadsto 1 + \color{blue}{\left(\left(-\frac{y}{3 \cdot \sqrt{x}}\right) + \left(-\frac{1}{x \cdot 9}\right)\right)} \]
    5. distribute-frac-neg99.7%

      \[\leadsto 1 + \left(\color{blue}{\frac{-y}{3 \cdot \sqrt{x}}} + \left(-\frac{1}{x \cdot 9}\right)\right) \]
    6. sub-neg99.7%

      \[\leadsto 1 + \color{blue}{\left(\frac{-y}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right)} \]
    7. neg-mul-199.7%

      \[\leadsto 1 + \left(\frac{\color{blue}{-1 \cdot y}}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right) \]
    8. *-commutative99.7%

      \[\leadsto 1 + \left(\frac{\color{blue}{y \cdot -1}}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right) \]
    9. associate-/l*99.7%

      \[\leadsto 1 + \left(\color{blue}{y \cdot \frac{-1}{3 \cdot \sqrt{x}}} - \frac{1}{x \cdot 9}\right) \]
    10. fma-neg99.7%

      \[\leadsto 1 + \color{blue}{\mathsf{fma}\left(y, \frac{-1}{3 \cdot \sqrt{x}}, -\frac{1}{x \cdot 9}\right)} \]
    11. associate-/r*99.6%

      \[\leadsto 1 + \mathsf{fma}\left(y, \color{blue}{\frac{\frac{-1}{3}}{\sqrt{x}}}, -\frac{1}{x \cdot 9}\right) \]
    12. metadata-eval99.6%

      \[\leadsto 1 + \mathsf{fma}\left(y, \frac{\color{blue}{-0.3333333333333333}}{\sqrt{x}}, -\frac{1}{x \cdot 9}\right) \]
    13. *-commutative99.6%

      \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, -\frac{1}{\color{blue}{9 \cdot x}}\right) \]
    14. associate-/r*99.6%

      \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, -\color{blue}{\frac{\frac{1}{9}}{x}}\right) \]
    15. distribute-neg-frac99.6%

      \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \color{blue}{\frac{-\frac{1}{9}}{x}}\right) \]
    16. metadata-eval99.6%

      \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{-\color{blue}{0.1111111111111111}}{x}\right) \]
    17. metadata-eval99.6%

      \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{\color{blue}{-0.1111111111111111}}{x}\right) \]
  3. Simplified99.6%

    \[\leadsto \color{blue}{1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{-0.1111111111111111}{x}\right)} \]
  4. Add Preprocessing
  5. Taylor expanded in y around 0 58.7%

    \[\leadsto 1 + \color{blue}{\frac{-0.1111111111111111}{x}} \]
  6. Final simplification58.7%

    \[\leadsto 1 + \frac{-0.1111111111111111}{x} \]
  7. Add Preprocessing

Alternative 15: 31.5% accurate, 113.0× speedup?

\[\begin{array}{l} \\ 1 \end{array} \]
(FPCore (x y) :precision binary64 1.0)
double code(double x, double y) {
	return 1.0;
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = 1.0d0
end function
public static double code(double x, double y) {
	return 1.0;
}
def code(x, y):
	return 1.0
function code(x, y)
	return 1.0
end
function tmp = code(x, y)
	tmp = 1.0;
end
code[x_, y_] := 1.0
\begin{array}{l}

\\
1
\end{array}
Derivation
  1. Initial program 99.7%

    \[\left(1 - \frac{1}{x \cdot 9}\right) - \frac{y}{3 \cdot \sqrt{x}} \]
  2. Step-by-step derivation
    1. associate--l-99.7%

      \[\leadsto \color{blue}{1 - \left(\frac{1}{x \cdot 9} + \frac{y}{3 \cdot \sqrt{x}}\right)} \]
    2. sub-neg99.7%

      \[\leadsto \color{blue}{1 + \left(-\left(\frac{1}{x \cdot 9} + \frac{y}{3 \cdot \sqrt{x}}\right)\right)} \]
    3. +-commutative99.7%

      \[\leadsto 1 + \left(-\color{blue}{\left(\frac{y}{3 \cdot \sqrt{x}} + \frac{1}{x \cdot 9}\right)}\right) \]
    4. distribute-neg-in99.7%

      \[\leadsto 1 + \color{blue}{\left(\left(-\frac{y}{3 \cdot \sqrt{x}}\right) + \left(-\frac{1}{x \cdot 9}\right)\right)} \]
    5. distribute-frac-neg99.7%

      \[\leadsto 1 + \left(\color{blue}{\frac{-y}{3 \cdot \sqrt{x}}} + \left(-\frac{1}{x \cdot 9}\right)\right) \]
    6. sub-neg99.7%

      \[\leadsto 1 + \color{blue}{\left(\frac{-y}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right)} \]
    7. neg-mul-199.7%

      \[\leadsto 1 + \left(\frac{\color{blue}{-1 \cdot y}}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right) \]
    8. *-commutative99.7%

      \[\leadsto 1 + \left(\frac{\color{blue}{y \cdot -1}}{3 \cdot \sqrt{x}} - \frac{1}{x \cdot 9}\right) \]
    9. associate-/l*99.7%

      \[\leadsto 1 + \left(\color{blue}{y \cdot \frac{-1}{3 \cdot \sqrt{x}}} - \frac{1}{x \cdot 9}\right) \]
    10. fma-neg99.7%

      \[\leadsto 1 + \color{blue}{\mathsf{fma}\left(y, \frac{-1}{3 \cdot \sqrt{x}}, -\frac{1}{x \cdot 9}\right)} \]
    11. associate-/r*99.6%

      \[\leadsto 1 + \mathsf{fma}\left(y, \color{blue}{\frac{\frac{-1}{3}}{\sqrt{x}}}, -\frac{1}{x \cdot 9}\right) \]
    12. metadata-eval99.6%

      \[\leadsto 1 + \mathsf{fma}\left(y, \frac{\color{blue}{-0.3333333333333333}}{\sqrt{x}}, -\frac{1}{x \cdot 9}\right) \]
    13. *-commutative99.6%

      \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, -\frac{1}{\color{blue}{9 \cdot x}}\right) \]
    14. associate-/r*99.6%

      \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, -\color{blue}{\frac{\frac{1}{9}}{x}}\right) \]
    15. distribute-neg-frac99.6%

      \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \color{blue}{\frac{-\frac{1}{9}}{x}}\right) \]
    16. metadata-eval99.6%

      \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{-\color{blue}{0.1111111111111111}}{x}\right) \]
    17. metadata-eval99.6%

      \[\leadsto 1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{\color{blue}{-0.1111111111111111}}{x}\right) \]
  3. Simplified99.6%

    \[\leadsto \color{blue}{1 + \mathsf{fma}\left(y, \frac{-0.3333333333333333}{\sqrt{x}}, \frac{-0.1111111111111111}{x}\right)} \]
  4. Add Preprocessing
  5. Taylor expanded in y around 0 58.7%

    \[\leadsto 1 + \color{blue}{\frac{-0.1111111111111111}{x}} \]
  6. Step-by-step derivation
    1. div-inv58.7%

      \[\leadsto 1 + \color{blue}{-0.1111111111111111 \cdot \frac{1}{x}} \]
    2. metadata-eval58.7%

      \[\leadsto 1 + \color{blue}{\left(-0.1111111111111111\right)} \cdot \frac{1}{x} \]
    3. cancel-sign-sub-inv58.7%

      \[\leadsto \color{blue}{1 - 0.1111111111111111 \cdot \frac{1}{x}} \]
    4. *-commutative58.7%

      \[\leadsto 1 - \color{blue}{\frac{1}{x} \cdot 0.1111111111111111} \]
    5. metadata-eval58.7%

      \[\leadsto 1 - \frac{1}{x} \cdot \color{blue}{\frac{1}{9}} \]
    6. div-inv58.7%

      \[\leadsto 1 - \color{blue}{\frac{\frac{1}{x}}{9}} \]
    7. associate-/r*58.8%

      \[\leadsto 1 - \color{blue}{\frac{1}{x \cdot 9}} \]
    8. add-sqr-sqrt58.6%

      \[\leadsto 1 - \color{blue}{\sqrt{\frac{1}{x \cdot 9}} \cdot \sqrt{\frac{1}{x \cdot 9}}} \]
    9. sqrt-unprod44.0%

      \[\leadsto 1 - \color{blue}{\sqrt{\frac{1}{x \cdot 9} \cdot \frac{1}{x \cdot 9}}} \]
    10. *-commutative44.0%

      \[\leadsto 1 - \sqrt{\frac{1}{\color{blue}{9 \cdot x}} \cdot \frac{1}{x \cdot 9}} \]
    11. associate-/r*44.0%

      \[\leadsto 1 - \sqrt{\color{blue}{\frac{\frac{1}{9}}{x}} \cdot \frac{1}{x \cdot 9}} \]
    12. metadata-eval44.0%

      \[\leadsto 1 - \sqrt{\frac{\color{blue}{0.1111111111111111}}{x} \cdot \frac{1}{x \cdot 9}} \]
    13. *-commutative44.0%

      \[\leadsto 1 - \sqrt{\frac{0.1111111111111111}{x} \cdot \frac{1}{\color{blue}{9 \cdot x}}} \]
    14. associate-/r*44.0%

      \[\leadsto 1 - \sqrt{\frac{0.1111111111111111}{x} \cdot \color{blue}{\frac{\frac{1}{9}}{x}}} \]
    15. metadata-eval44.0%

      \[\leadsto 1 - \sqrt{\frac{0.1111111111111111}{x} \cdot \frac{\color{blue}{0.1111111111111111}}{x}} \]
    16. frac-times44.0%

      \[\leadsto 1 - \sqrt{\color{blue}{\frac{0.1111111111111111 \cdot 0.1111111111111111}{x \cdot x}}} \]
    17. metadata-eval44.0%

      \[\leadsto 1 - \sqrt{\frac{\color{blue}{0.012345679012345678}}{x \cdot x}} \]
    18. metadata-eval44.0%

      \[\leadsto 1 - \sqrt{\frac{\color{blue}{-0.1111111111111111 \cdot -0.1111111111111111}}{x \cdot x}} \]
    19. frac-times44.0%

      \[\leadsto 1 - \sqrt{\color{blue}{\frac{-0.1111111111111111}{x} \cdot \frac{-0.1111111111111111}{x}}} \]
    20. sqrt-unprod0.0%

      \[\leadsto 1 - \color{blue}{\sqrt{\frac{-0.1111111111111111}{x}} \cdot \sqrt{\frac{-0.1111111111111111}{x}}} \]
    21. add-sqr-sqrt26.0%

      \[\leadsto 1 - \color{blue}{\frac{-0.1111111111111111}{x}} \]
  7. Applied egg-rr26.0%

    \[\leadsto \color{blue}{1 - \frac{-0.1111111111111111}{x}} \]
  8. Step-by-step derivation
    1. add-sqr-sqrt0.0%

      \[\leadsto 1 - \color{blue}{\sqrt{\frac{-0.1111111111111111}{x}} \cdot \sqrt{\frac{-0.1111111111111111}{x}}} \]
    2. sqrt-unprod44.0%

      \[\leadsto 1 - \color{blue}{\sqrt{\frac{-0.1111111111111111}{x} \cdot \frac{-0.1111111111111111}{x}}} \]
    3. frac-times44.0%

      \[\leadsto 1 - \sqrt{\color{blue}{\frac{-0.1111111111111111 \cdot -0.1111111111111111}{x \cdot x}}} \]
    4. metadata-eval44.0%

      \[\leadsto 1 - \sqrt{\frac{\color{blue}{0.012345679012345678}}{x \cdot x}} \]
    5. metadata-eval44.0%

      \[\leadsto 1 - \sqrt{\frac{\color{blue}{0.1111111111111111 \cdot 0.1111111111111111}}{x \cdot x}} \]
    6. frac-times44.0%

      \[\leadsto 1 - \sqrt{\color{blue}{\frac{0.1111111111111111}{x} \cdot \frac{0.1111111111111111}{x}}} \]
    7. clear-num44.0%

      \[\leadsto 1 - \sqrt{\color{blue}{\frac{1}{\frac{x}{0.1111111111111111}}} \cdot \frac{0.1111111111111111}{x}} \]
    8. clear-num44.0%

      \[\leadsto 1 - \sqrt{\frac{1}{\frac{x}{0.1111111111111111}} \cdot \color{blue}{\frac{1}{\frac{x}{0.1111111111111111}}}} \]
    9. frac-times44.0%

      \[\leadsto 1 - \sqrt{\color{blue}{\frac{1 \cdot 1}{\frac{x}{0.1111111111111111} \cdot \frac{x}{0.1111111111111111}}}} \]
    10. div-inv44.0%

      \[\leadsto 1 - \sqrt{\frac{1 \cdot 1}{\color{blue}{\left(x \cdot \frac{1}{0.1111111111111111}\right)} \cdot \frac{x}{0.1111111111111111}}} \]
    11. metadata-eval44.0%

      \[\leadsto 1 - \sqrt{\frac{1 \cdot 1}{\left(x \cdot \color{blue}{9}\right) \cdot \frac{x}{0.1111111111111111}}} \]
    12. div-inv44.0%

      \[\leadsto 1 - \sqrt{\frac{1 \cdot 1}{\left(x \cdot 9\right) \cdot \color{blue}{\left(x \cdot \frac{1}{0.1111111111111111}\right)}}} \]
    13. metadata-eval44.0%

      \[\leadsto 1 - \sqrt{\frac{1 \cdot 1}{\left(x \cdot 9\right) \cdot \left(x \cdot \color{blue}{9}\right)}} \]
    14. frac-times44.0%

      \[\leadsto 1 - \sqrt{\color{blue}{\frac{1}{x \cdot 9} \cdot \frac{1}{x \cdot 9}}} \]
    15. sqrt-unprod58.6%

      \[\leadsto 1 - \color{blue}{\sqrt{\frac{1}{x \cdot 9}} \cdot \sqrt{\frac{1}{x \cdot 9}}} \]
    16. add-sqr-sqrt58.8%

      \[\leadsto 1 - \color{blue}{\frac{1}{x \cdot 9}} \]
    17. inv-pow58.8%

      \[\leadsto 1 - \color{blue}{{\left(x \cdot 9\right)}^{-1}} \]
  9. Applied egg-rr58.8%

    \[\leadsto 1 - \color{blue}{{\left(x \cdot 9\right)}^{-1}} \]
  10. Taylor expanded in x around inf 26.0%

    \[\leadsto \color{blue}{1} \]
  11. Final simplification26.0%

    \[\leadsto 1 \]
  12. Add Preprocessing

Developer target: 99.7% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \left(1 - \frac{\frac{1}{x}}{9}\right) - \frac{y}{3 \cdot \sqrt{x}} \end{array} \]
(FPCore (x y)
 :precision binary64
 (- (- 1.0 (/ (/ 1.0 x) 9.0)) (/ y (* 3.0 (sqrt x)))))
double code(double x, double y) {
	return (1.0 - ((1.0 / x) / 9.0)) - (y / (3.0 * sqrt(x)));
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = (1.0d0 - ((1.0d0 / x) / 9.0d0)) - (y / (3.0d0 * sqrt(x)))
end function
public static double code(double x, double y) {
	return (1.0 - ((1.0 / x) / 9.0)) - (y / (3.0 * Math.sqrt(x)));
}
def code(x, y):
	return (1.0 - ((1.0 / x) / 9.0)) - (y / (3.0 * math.sqrt(x)))
function code(x, y)
	return Float64(Float64(1.0 - Float64(Float64(1.0 / x) / 9.0)) - Float64(y / Float64(3.0 * sqrt(x))))
end
function tmp = code(x, y)
	tmp = (1.0 - ((1.0 / x) / 9.0)) - (y / (3.0 * sqrt(x)));
end
code[x_, y_] := N[(N[(1.0 - N[(N[(1.0 / x), $MachinePrecision] / 9.0), $MachinePrecision]), $MachinePrecision] - N[(y / N[(3.0 * N[Sqrt[x], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\left(1 - \frac{\frac{1}{x}}{9}\right) - \frac{y}{3 \cdot \sqrt{x}}
\end{array}

Reproduce

?
herbie shell --seed 2024076 
(FPCore (x y)
  :name "Numeric.SpecFunctions:invIncompleteGamma from math-functions-0.1.5.2, D"
  :precision binary64

  :alt
  (- (- 1.0 (/ (/ 1.0 x) 9.0)) (/ y (* 3.0 (sqrt x))))

  (- (- 1.0 (/ 1.0 (* x 9.0))) (/ y (* 3.0 (sqrt x)))))