Graphics.Rendering.Chart.Plot.AreaSpots:renderSpotLegend from Chart-1.5.3

Percentage Accurate: 99.9% → 99.9%

Time: 5.8s

Alternatives: 6

Speedup: 1.0×

Specification

Math

\[\begin{array}{l} \\ x + \frac{\left|y - x\right|}{2} \end{array} \]

FPCore

(FPCore (x y) :precision binary64 (+ x (/ (fabs (- y x)) 2.0)))

C

double code(double x, double y) {
	return x + (fabs((y - x)) / 2.0);
}

Fortran

real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = x + (abs((y - x)) / 2.0d0)
end function

Java

public static double code(double x, double y) {
	return x + (Math.abs((y - x)) / 2.0);
}

Python

def code(x, y):
	return x + (math.fabs((y - x)) / 2.0)

Julia

function code(x, y)
	return Float64(x + Float64(abs(Float64(y - x)) / 2.0))
end

MATLAB

function tmp = code(x, y)
	tmp = x + (abs((y - x)) / 2.0);
end

Wolfram

code[x_, y_] := N[(x + N[(N[Abs[N[(y - x), $MachinePrecision]], $MachinePrecision] / 2.0), $MachinePrecision]), $MachinePrecision]

Initial Program: 99.9% accurate, 1.0× speedup

Math

\[\begin{array}{l} \\ x + \frac{\left|y - x\right|}{2} \end{array} \]

FPCore

(FPCore (x y) :precision binary64 (+ x (/ (fabs (- y x)) 2.0)))

C

double code(double x, double y) {
	return x + (fabs((y - x)) / 2.0);
}

Fortran

real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = x + (abs((y - x)) / 2.0d0)
end function

Java

public static double code(double x, double y) {
	return x + (Math.abs((y - x)) / 2.0);
}

Python

def code(x, y):
	return x + (math.fabs((y - x)) / 2.0)

Julia

function code(x, y)
	return Float64(x + Float64(abs(Float64(y - x)) / 2.0))
end

MATLAB

function tmp = code(x, y)
	tmp = x + (abs((y - x)) / 2.0);
end

Wolfram

code[x_, y_] := N[(x + N[(N[Abs[N[(y - x), $MachinePrecision]], $MachinePrecision] / 2.0), $MachinePrecision]), $MachinePrecision]

Alternative 1: 99.9% accurate, 1.0× speedup

Math

\[\begin{array}{l} \\ x + \frac{\left|y - x\right|}{2} \end{array} \]

FPCore

(FPCore (x y) :precision binary64 (+ x (/ (fabs (- y x)) 2.0)))

C

double code(double x, double y) {
	return x + (fabs((y - x)) / 2.0);
}

Fortran

real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = x + (abs((y - x)) / 2.0d0)
end function

Java

public static double code(double x, double y) {
	return x + (Math.abs((y - x)) / 2.0);
}

Python

def code(x, y):
	return x + (math.fabs((y - x)) / 2.0)

Julia

function code(x, y)
	return Float64(x + Float64(abs(Float64(y - x)) / 2.0))
end

MATLAB

function tmp = code(x, y)
	tmp = x + (abs((y - x)) / 2.0);
end

Wolfram

code[x_, y_] := N[(x + N[(N[Abs[N[(y - x), $MachinePrecision]], $MachinePrecision] / 2.0), $MachinePrecision]), $MachinePrecision]

Derivation

1. Initial program 99.9%

   \[x + \frac{\left|y - x\right|}{2} \]
2. Add Preprocessing
3. Add Preprocessing

Alternative 2: 71.3% accurate, 1.0× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;y \leq -1.8 \cdot 10^{-120}:\\ \;\;\;\;\left|y - x\right| \cdot 0.5\\ \mathbf{else}:\\ \;\;\;\;0.5 \cdot \left(x + y\right)\\ \end{array} \end{array} \]

FPCore

(FPCore (x y)
 :precision binary64
 (if (<= y -1.8e-120) (* (fabs (- y x)) 0.5) (* 0.5 (+ x y))))

C

double code(double x, double y) {
	double tmp;
	if (y <= -1.8e-120) {
		tmp = fabs((y - x)) * 0.5;
	} else {
		tmp = 0.5 * (x + y);
	}
	return tmp;
}

Fortran

real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8) :: tmp
    if (y <= (-1.8d-120)) then
        tmp = abs((y - x)) * 0.5d0
    else
        tmp = 0.5d0 * (x + y)
    end if
    code = tmp
end function

Java

public static double code(double x, double y) {
	double tmp;
	if (y <= -1.8e-120) {
		tmp = Math.abs((y - x)) * 0.5;
	} else {
		tmp = 0.5 * (x + y);
	}
	return tmp;
}

Python

def code(x, y):
	tmp = 0
	if y <= -1.8e-120:
		tmp = math.fabs((y - x)) * 0.5
	else:
		tmp = 0.5 * (x + y)
	return tmp

Julia

function code(x, y)
	tmp = 0.0
	if (y <= -1.8e-120)
		tmp = Float64(abs(Float64(y - x)) * 0.5);
	else
		tmp = Float64(0.5 * Float64(x + y));
	end
	return tmp
end

MATLAB

function tmp_2 = code(x, y)
	tmp = 0.0;
	if (y <= -1.8e-120)
		tmp = abs((y - x)) * 0.5;
	else
		tmp = 0.5 * (x + y);
	end
	tmp_2 = tmp;
end

Wolfram

code[x_, y_] := If[LessEqual[y, -1.8e-120], N[(N[Abs[N[(y - x), $MachinePrecision]], $MachinePrecision] * 0.5), $MachinePrecision], N[(0.5 * N[(x + y), $MachinePrecision]), $MachinePrecision]]

Derivation

1. Split input into 2 regimes

2. if y < -1.8000000000000001e-120

   1. Initial program 100.0%

      \[x + \frac{\left|y - x\right|}{2} \]
   2. Add Preprocessing

   3. Taylor expanded in x around 0 75.3%

      \[\leadsto \color{blue}{0.5 \cdot \left|y - x\right|} \]

   if -1.8000000000000001e-120 < y

   1. Initial program 99.8%

      \[x + \frac{\left|y - x\right|}{2} \]
   2. Add Preprocessing

   3. Taylor expanded in x around inf 89.9%

      \[\leadsto \color{blue}{x \cdot \left(1 + 0.5 \cdot \frac{\left|y - x\right|}{x}\right)} \]

   4. Taylor expanded in x around 0 99.8%

      \[\leadsto \color{blue}{x + 0.5 \cdot \left|y - x\right|} \]
   5. Step-by-step derivation

      1. +-commutative 99.8%

         \[\leadsto \color{blue}{0.5 \cdot \left|y - x\right| + x} \]

      2. fma-define 99.8%

         \[\leadsto \color{blue}{\mathsf{fma}\left(0.5, \left|y - x\right|, x\right)} \]

      3. rem-square-sqrt 64.3%

         \[\leadsto \mathsf{fma}\left(0.5, \left|\color{blue}{\sqrt{y - x} \cdot \sqrt{y - x}}\right|, x\right) \]

      4. fabs-sqr 64.3%

         \[\leadsto \mathsf{fma}\left(0.5, \color{blue}{\sqrt{y - x} \cdot \sqrt{y - x}}, x\right) \]

      5. rem-square-sqrt 70.7%

         \[\leadsto \mathsf{fma}\left(0.5, \color{blue}{y - x}, x\right) \]

      6. fma-undefine 70.7%

         \[\leadsto \color{blue}{0.5 \cdot \left(y - x\right) + x} \]

      7. +-commutative 70.7%

         \[\leadsto \color{blue}{x + 0.5 \cdot \left(y - x\right)} \]

      8. sub-neg 70.7%

         \[\leadsto x + 0.5 \cdot \color{blue}{\left(y + \left(-x\right)\right)} \]

      9. distribute-lft-in 70.7%

         \[\leadsto x + \color{blue}{\left(0.5 \cdot y + 0.5 \cdot \left(-x\right)\right)} \]

      10. distribute-rgt-neg-in 70.7%

          \[\leadsto x + \left(0.5 \cdot y + \color{blue}{\left(-0.5 \cdot x\right)}\right) \]

      11. distribute-lft-neg-in 70.7%

          \[\leadsto x + \left(0.5 \cdot y + \color{blue}{\left(-0.5\right) \cdot x}\right) \]

      12. metadata-eval 70.7%

          \[\leadsto x + \left(0.5 \cdot y + \color{blue}{-0.5} \cdot x\right) \]

      13. +-commutative 70.7%

          \[\leadsto x + \color{blue}{\left(-0.5 \cdot x + 0.5 \cdot y\right)} \]

      14. associate-+r+ 70.7%

          \[\leadsto \color{blue}{\left(x + -0.5 \cdot x\right) + 0.5 \cdot y} \]

      15. distribute-rgt1-in 70.7%

          \[\leadsto \color{blue}{\left(-0.5 + 1\right) \cdot x} + 0.5 \cdot y \]

      16. metadata-eval 70.7%

          \[\leadsto \color{blue}{0.5} \cdot x + 0.5 \cdot y \]

      17. distribute-lft-out 70.7%

          \[\leadsto \color{blue}{0.5 \cdot \left(x + y\right)} \]

      18. +-commutative 70.7%

          \[\leadsto 0.5 \cdot \color{blue}{\left(y + x\right)} \]

   6. Simplified 70.7%

      \[\leadsto \color{blue}{0.5 \cdot \left(y + x\right)} \]
3. Recombined 2 regimes into one program.

4. Final simplification 72.4%

   \[\leadsto \begin{array}{l} \mathbf{if}\;y \leq -1.8 \cdot 10^{-120}:\\ \;\;\;\;\left|y - x\right| \cdot 0.5\\ \mathbf{else}:\\ \;\;\;\;0.5 \cdot \left(x + y\right)\\ \end{array} \]
5. Add Preprocessing

Alternative 3: 46.3% accurate, 13.3× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;y \leq 1.8 \cdot 10^{-73}:\\ \;\;\;\;x \cdot 0.5\\ \mathbf{else}:\\ \;\;\;\;y \cdot 0.5\\ \end{array} \end{array} \]

FPCore

(FPCore (x y) :precision binary64 (if (<= y 1.8e-73) (* x 0.5) (* y 0.5)))

C

double code(double x, double y) {
	double tmp;
	if (y <= 1.8e-73) {
		tmp = x * 0.5;
	} else {
		tmp = y * 0.5;
	}
	return tmp;
}

Fortran

real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8) :: tmp
    if (y <= 1.8d-73) then
        tmp = x * 0.5d0
    else
        tmp = y * 0.5d0
    end if
    code = tmp
end function

Java

public static double code(double x, double y) {
	double tmp;
	if (y <= 1.8e-73) {
		tmp = x * 0.5;
	} else {
		tmp = y * 0.5;
	}
	return tmp;
}

Python

def code(x, y):
	tmp = 0
	if y <= 1.8e-73:
		tmp = x * 0.5
	else:
		tmp = y * 0.5
	return tmp

Julia

function code(x, y)
	tmp = 0.0
	if (y <= 1.8e-73)
		tmp = Float64(x * 0.5);
	else
		tmp = Float64(y * 0.5);
	end
	return tmp
end

MATLAB

function tmp_2 = code(x, y)
	tmp = 0.0;
	if (y <= 1.8e-73)
		tmp = x * 0.5;
	else
		tmp = y * 0.5;
	end
	tmp_2 = tmp;
end

Wolfram

code[x_, y_] := If[LessEqual[y, 1.8e-73], N[(x * 0.5), $MachinePrecision], N[(y * 0.5), $MachinePrecision]]

Derivation

1. Split input into 2 regimes

2. if y < 1.8e-73

   1. Initial program 99.9%

      \[x + \frac{\left|y - x\right|}{2} \]
   2. Add Preprocessing
   3. Step-by-step derivation

      1. +-commutative 99.9%

         \[\leadsto \color{blue}{\frac{\left|y - x\right|}{2} + x} \]

      2. div-inv 99.9%

         \[\leadsto \color{blue}{\left|y - x\right| \cdot \frac{1}{2}} + x \]

      3. fma-define 99.9%

         \[\leadsto \color{blue}{\mathsf{fma}\left(\left|y - x\right|, \frac{1}{2}, x\right)} \]

      4. add-sqr-sqrt 31.9%

         \[\leadsto \mathsf{fma}\left(\left|\color{blue}{\sqrt{y - x} \cdot \sqrt{y - x}}\right|, \frac{1}{2}, x\right) \]

      5. fabs-sqr 31.9%

         \[\leadsto \mathsf{fma}\left(\color{blue}{\sqrt{y - x} \cdot \sqrt{y - x}}, \frac{1}{2}, x\right) \]

      6. add-sqr-sqrt 37.6%

         \[\leadsto \mathsf{fma}\left(\color{blue}{y - x}, \frac{1}{2}, x\right) \]

      7. fma-define 37.6%

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

      8. div-inv 37.6%

         \[\leadsto \color{blue}{\frac{y - x}{2}} + x \]

      9. add-sqr-sqrt 31.9%

         \[\leadsto \frac{\color{blue}{\sqrt{y - x} \cdot \sqrt{y - x}}}{2} + x \]

      10. fabs-sqr 31.9%

          \[\leadsto \frac{\color{blue}{\left|\sqrt{y - x} \cdot \sqrt{y - x}\right|}}{2} + x \]

      11. add-sqr-sqrt 99.9%

          \[\leadsto \frac{\left|\color{blue}{y - x}\right|}{2} + x \]

      12. add-cube-cbrt 98.4%

          \[\leadsto \frac{\color{blue}{\left(\sqrt[3]{\left|y - x\right|} \cdot \sqrt[3]{\left|y - x\right|}\right) \cdot \sqrt[3]{\left|y - x\right|}}}{2} + x \]

      13. associate-/l* 98.4%

          \[\leadsto \color{blue}{\left(\sqrt[3]{\left|y - x\right|} \cdot \sqrt[3]{\left|y - x\right|}\right) \cdot \frac{\sqrt[3]{\left|y - x\right|}}{2}} + x \]

      14. fma-define 98.4%

          \[\leadsto \color{blue}{\mathsf{fma}\left(\sqrt[3]{\left|y - x\right|} \cdot \sqrt[3]{\left|y - x\right|}, \frac{\sqrt[3]{\left|y - x\right|}}{2}, x\right)} \]

   4. Applied egg-rr 37.0%

      \[\leadsto \color{blue}{\mathsf{fma}\left({\left(\sqrt[3]{y - x}\right)}^{2}, \frac{\sqrt[3]{y - x}}{2}, x\right)} \]
   5. Step-by-step derivation

      1. fma-undefine 37.0%

         \[\leadsto \color{blue}{{\left(\sqrt[3]{y - x}\right)}^{2} \cdot \frac{\sqrt[3]{y - x}}{2} + x} \]

      2. +-commutative 37.0%

         \[\leadsto \color{blue}{x + {\left(\sqrt[3]{y - x}\right)}^{2} \cdot \frac{\sqrt[3]{y - x}}{2}} \]

      3. associate-*r/ 37.0%

         \[\leadsto x + \color{blue}{\frac{{\left(\sqrt[3]{y - x}\right)}^{2} \cdot \sqrt[3]{y - x}}{2}} \]

      4. unpow2 37.0%

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

      5. rem-3cbrt-lft 37.6%

         \[\leadsto x + \frac{\color{blue}{y - x}}{2} \]

   6. Simplified 37.6%

      \[\leadsto \color{blue}{x + \frac{y - x}{2}} \]

   7. Taylor expanded in x around inf 33.9%

      \[\leadsto \color{blue}{0.5 \cdot x} \]

   if 1.8e-73 < y

   1. Initial program 100.0%

      \[x + \frac{\left|y - x\right|}{2} \]
   2. Add Preprocessing
   3. Step-by-step derivation

      1. +-commutative 100.0%

         \[\leadsto \color{blue}{\frac{\left|y - x\right|}{2} + x} \]

      2. div-inv 100.0%

         \[\leadsto \color{blue}{\left|y - x\right| \cdot \frac{1}{2}} + x \]

      3. fma-define 100.0%

         \[\leadsto \color{blue}{\mathsf{fma}\left(\left|y - x\right|, \frac{1}{2}, x\right)} \]

      4. add-sqr-sqrt 78.0%

         \[\leadsto \mathsf{fma}\left(\left|\color{blue}{\sqrt{y - x} \cdot \sqrt{y - x}}\right|, \frac{1}{2}, x\right) \]

      5. fabs-sqr 78.0%

         \[\leadsto \mathsf{fma}\left(\color{blue}{\sqrt{y - x} \cdot \sqrt{y - x}}, \frac{1}{2}, x\right) \]

      6. add-sqr-sqrt 82.4%

         \[\leadsto \mathsf{fma}\left(\color{blue}{y - x}, \frac{1}{2}, x\right) \]

      7. fma-define 82.4%

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

      8. div-inv 82.4%

         \[\leadsto \color{blue}{\frac{y - x}{2}} + x \]

      9. add-sqr-sqrt 78.0%

         \[\leadsto \frac{\color{blue}{\sqrt{y - x} \cdot \sqrt{y - x}}}{2} + x \]

      10. fabs-sqr 78.0%

          \[\leadsto \frac{\color{blue}{\left|\sqrt{y - x} \cdot \sqrt{y - x}\right|}}{2} + x \]

      11. add-sqr-sqrt 100.0%

          \[\leadsto \frac{\left|\color{blue}{y - x}\right|}{2} + x \]

      12. add-cube-cbrt 98.3%

          \[\leadsto \frac{\color{blue}{\left(\sqrt[3]{\left|y - x\right|} \cdot \sqrt[3]{\left|y - x\right|}\right) \cdot \sqrt[3]{\left|y - x\right|}}}{2} + x \]

      13. associate-/l* 98.3%

          \[\leadsto \color{blue}{\left(\sqrt[3]{\left|y - x\right|} \cdot \sqrt[3]{\left|y - x\right|}\right) \cdot \frac{\sqrt[3]{\left|y - x\right|}}{2}} + x \]

      14. fma-define 98.3%

          \[\leadsto \color{blue}{\mathsf{fma}\left(\sqrt[3]{\left|y - x\right|} \cdot \sqrt[3]{\left|y - x\right|}, \frac{\sqrt[3]{\left|y - x\right|}}{2}, x\right)} \]

   4. Applied egg-rr 80.8%

      \[\leadsto \color{blue}{\mathsf{fma}\left({\left(\sqrt[3]{y - x}\right)}^{2}, \frac{\sqrt[3]{y - x}}{2}, x\right)} \]
   5. Step-by-step derivation

      1. fma-undefine 80.8%

         \[\leadsto \color{blue}{{\left(\sqrt[3]{y - x}\right)}^{2} \cdot \frac{\sqrt[3]{y - x}}{2} + x} \]

      2. +-commutative 80.8%

         \[\leadsto \color{blue}{x + {\left(\sqrt[3]{y - x}\right)}^{2} \cdot \frac{\sqrt[3]{y - x}}{2}} \]

      3. associate-*r/ 80.8%

         \[\leadsto x + \color{blue}{\frac{{\left(\sqrt[3]{y - x}\right)}^{2} \cdot \sqrt[3]{y - x}}{2}} \]

      4. unpow2 80.8%

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

      5. rem-3cbrt-lft 82.4%

         \[\leadsto x + \frac{\color{blue}{y - x}}{2} \]

   6. Simplified 82.4%

      \[\leadsto \color{blue}{x + \frac{y - x}{2}} \]

   7. Taylor expanded in x around 0 71.2%

      \[\leadsto \color{blue}{0.5 \cdot y} \]
3. Recombined 2 regimes into one program.

4. Final simplification 44.1%

   \[\leadsto \begin{array}{l} \mathbf{if}\;y \leq 1.8 \cdot 10^{-73}:\\ \;\;\;\;x \cdot 0.5\\ \mathbf{else}:\\ \;\;\;\;y \cdot 0.5\\ \end{array} \]
5. Add Preprocessing

Alternative 4: 55.3% accurate, 21.4× speedup

Math

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

FPCore

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

C

double code(double x, double y) {
	return 0.5 * (x + y);
}

Fortran

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

Java

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

Python

def code(x, y):
	return 0.5 * (x + y)

Julia

function code(x, y)
	return Float64(0.5 * Float64(x + y))
end

MATLAB

function tmp = code(x, y)
	tmp = 0.5 * (x + y);
end

Wolfram

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

Derivation

1. Initial program 99.9%

   \[x + \frac{\left|y - x\right|}{2} \]
2. Add Preprocessing

3. Taylor expanded in x around inf 84.4%

   \[\leadsto \color{blue}{x \cdot \left(1 + 0.5 \cdot \frac{\left|y - x\right|}{x}\right)} \]

4. Taylor expanded in x around 0 99.9%

   \[\leadsto \color{blue}{x + 0.5 \cdot \left|y - x\right|} \]
5. Step-by-step derivation

   1. +-commutative 99.9%

      \[\leadsto \color{blue}{0.5 \cdot \left|y - x\right| + x} \]

   2. fma-define 99.9%

      \[\leadsto \color{blue}{\mathsf{fma}\left(0.5, \left|y - x\right|, x\right)} \]

   3. rem-square-sqrt 44.5%

      \[\leadsto \mathsf{fma}\left(0.5, \left|\color{blue}{\sqrt{y - x} \cdot \sqrt{y - x}}\right|, x\right) \]

   4. fabs-sqr 44.5%

      \[\leadsto \mathsf{fma}\left(0.5, \color{blue}{\sqrt{y - x} \cdot \sqrt{y - x}}, x\right) \]

   5. rem-square-sqrt 49.9%

      \[\leadsto \mathsf{fma}\left(0.5, \color{blue}{y - x}, x\right) \]

   6. fma-undefine 49.9%

      \[\leadsto \color{blue}{0.5 \cdot \left(y - x\right) + x} \]

   7. +-commutative 49.9%

      \[\leadsto \color{blue}{x + 0.5 \cdot \left(y - x\right)} \]

   8. sub-neg 49.9%

      \[\leadsto x + 0.5 \cdot \color{blue}{\left(y + \left(-x\right)\right)} \]

   9. distribute-lft-in 49.9%

      \[\leadsto x + \color{blue}{\left(0.5 \cdot y + 0.5 \cdot \left(-x\right)\right)} \]

   10. distribute-rgt-neg-in 49.9%

       \[\leadsto x + \left(0.5 \cdot y + \color{blue}{\left(-0.5 \cdot x\right)}\right) \]

   11. distribute-lft-neg-in 49.9%

       \[\leadsto x + \left(0.5 \cdot y + \color{blue}{\left(-0.5\right) \cdot x}\right) \]

   12. metadata-eval 49.9%

       \[\leadsto x + \left(0.5 \cdot y + \color{blue}{-0.5} \cdot x\right) \]

   13. +-commutative 49.9%

       \[\leadsto x + \color{blue}{\left(-0.5 \cdot x + 0.5 \cdot y\right)} \]

   14. associate-+r+ 49.9%

       \[\leadsto \color{blue}{\left(x + -0.5 \cdot x\right) + 0.5 \cdot y} \]

   15. distribute-rgt1-in 49.9%

       \[\leadsto \color{blue}{\left(-0.5 + 1\right) \cdot x} + 0.5 \cdot y \]

   16. metadata-eval 49.9%

       \[\leadsto \color{blue}{0.5} \cdot x + 0.5 \cdot y \]

   17. distribute-lft-out 49.9%

       \[\leadsto \color{blue}{0.5 \cdot \left(x + y\right)} \]

   18. +-commutative 49.9%

       \[\leadsto 0.5 \cdot \color{blue}{\left(y + x\right)} \]

6. Simplified 49.9%

   \[\leadsto \color{blue}{0.5 \cdot \left(y + x\right)} \]

7. Final simplification 49.9%

   \[\leadsto 0.5 \cdot \left(x + y\right) \]
8. Add Preprocessing

Alternative 5: 30.7% accurate, 35.7× speedup

Math

\[\begin{array}{l} \\ x \cdot 0.5 \end{array} \]

FPCore

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

C

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

Fortran

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

Java

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

Python

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

Julia

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

MATLAB

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

Wolfram

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

Derivation

1. Initial program 99.9%

   \[x + \frac{\left|y - x\right|}{2} \]
2. Add Preprocessing
3. Step-by-step derivation

   1. +-commutative 99.9%

      \[\leadsto \color{blue}{\frac{\left|y - x\right|}{2} + x} \]

   2. div-inv 99.9%

      \[\leadsto \color{blue}{\left|y - x\right| \cdot \frac{1}{2}} + x \]

   3. fma-define 99.9%

      \[\leadsto \color{blue}{\mathsf{fma}\left(\left|y - x\right|, \frac{1}{2}, x\right)} \]

   4. add-sqr-sqrt 44.5%

      \[\leadsto \mathsf{fma}\left(\left|\color{blue}{\sqrt{y - x} \cdot \sqrt{y - x}}\right|, \frac{1}{2}, x\right) \]

   5. fabs-sqr 44.5%

      \[\leadsto \mathsf{fma}\left(\color{blue}{\sqrt{y - x} \cdot \sqrt{y - x}}, \frac{1}{2}, x\right) \]

   6. add-sqr-sqrt 49.9%

      \[\leadsto \mathsf{fma}\left(\color{blue}{y - x}, \frac{1}{2}, x\right) \]

   7. fma-define 49.9%

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

   8. div-inv 49.9%

      \[\leadsto \color{blue}{\frac{y - x}{2}} + x \]

   9. add-sqr-sqrt 44.5%

      \[\leadsto \frac{\color{blue}{\sqrt{y - x} \cdot \sqrt{y - x}}}{2} + x \]

   10. fabs-sqr 44.5%

       \[\leadsto \frac{\color{blue}{\left|\sqrt{y - x} \cdot \sqrt{y - x}\right|}}{2} + x \]

   11. add-sqr-sqrt 99.9%

       \[\leadsto \frac{\left|\color{blue}{y - x}\right|}{2} + x \]

   12. add-cube-cbrt 98.4%

       \[\leadsto \frac{\color{blue}{\left(\sqrt[3]{\left|y - x\right|} \cdot \sqrt[3]{\left|y - x\right|}\right) \cdot \sqrt[3]{\left|y - x\right|}}}{2} + x \]

   13. associate-/l* 98.4%

       \[\leadsto \color{blue}{\left(\sqrt[3]{\left|y - x\right|} \cdot \sqrt[3]{\left|y - x\right|}\right) \cdot \frac{\sqrt[3]{\left|y - x\right|}}{2}} + x \]

   14. fma-define 98.4%

       \[\leadsto \color{blue}{\mathsf{fma}\left(\sqrt[3]{\left|y - x\right|} \cdot \sqrt[3]{\left|y - x\right|}, \frac{\sqrt[3]{\left|y - x\right|}}{2}, x\right)} \]

4. Applied egg-rr 49.0%

   \[\leadsto \color{blue}{\mathsf{fma}\left({\left(\sqrt[3]{y - x}\right)}^{2}, \frac{\sqrt[3]{y - x}}{2}, x\right)} \]
5. Step-by-step derivation

   1. fma-undefine 49.0%

      \[\leadsto \color{blue}{{\left(\sqrt[3]{y - x}\right)}^{2} \cdot \frac{\sqrt[3]{y - x}}{2} + x} \]

   2. +-commutative 49.0%

      \[\leadsto \color{blue}{x + {\left(\sqrt[3]{y - x}\right)}^{2} \cdot \frac{\sqrt[3]{y - x}}{2}} \]

   3. associate-*r/ 49.0%

      \[\leadsto x + \color{blue}{\frac{{\left(\sqrt[3]{y - x}\right)}^{2} \cdot \sqrt[3]{y - x}}{2}} \]

   4. unpow2 49.0%

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

   5. rem-3cbrt-lft 49.9%

      \[\leadsto x + \frac{\color{blue}{y - x}}{2} \]

6. Simplified 49.9%

   \[\leadsto \color{blue}{x + \frac{y - x}{2}} \]

7. Taylor expanded in x around inf 28.2%

   \[\leadsto \color{blue}{0.5 \cdot x} \]

8. Final simplification 28.2%

   \[\leadsto x \cdot 0.5 \]
9. Add Preprocessing

Alternative 6: 11.3% accurate, 107.0× speedup

Math

\[\begin{array}{l} \\ x \end{array} \]

FPCore

(FPCore (x y) :precision binary64 x)

C

double code(double x, double y) {
	return x;
}

Fortran

real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = x
end function

Java

public static double code(double x, double y) {
	return x;
}

Python

def code(x, y):
	return x

Julia

function code(x, y)
	return x
end

MATLAB

function tmp = code(x, y)
	tmp = x;
end

Wolfram

code[x_, y_] := x

Derivation

1. Initial program 99.9%

   \[x + \frac{\left|y - x\right|}{2} \]
2. Add Preprocessing

3. Taylor expanded in x around inf 11.2%

   \[\leadsto \color{blue}{x} \]
4. Add Preprocessing

Reproduce

herbie shell --seed 2024087 
(FPCore (x y)
  :name "Graphics.Rendering.Chart.Plot.AreaSpots:renderSpotLegend from Chart-1.5.3"
  :precision binary64
  (+ x (/ (fabs (- y x)) 2.0)))