Diagrams.TwoD.Apollonian:descartes from diagrams-contrib-1.3.0.5

Percentage Accurate: 70.0% → 95.4%

Time: 11.5s

Alternatives: 11

Speedup: 0.9×

Specification

Math

\[\begin{array}{l} \\ 2 \cdot \sqrt{\left(x \cdot y + x \cdot z\right) + y \cdot z} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (* 2.0 (sqrt (+ (+ (* x y) (* x z)) (* y z)))))

C

double code(double x, double y, double z) {
	return 2.0 * sqrt((((x * y) + (x * z)) + (y * z)));
}

Fortran

real(8) function code(x, y, z)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    code = 2.0d0 * sqrt((((x * y) + (x * z)) + (y * z)))
end function

Java

public static double code(double x, double y, double z) {
	return 2.0 * Math.sqrt((((x * y) + (x * z)) + (y * z)));
}

Python

def code(x, y, z):
	return 2.0 * math.sqrt((((x * y) + (x * z)) + (y * z)))

Julia

function code(x, y, z)
	return Float64(2.0 * sqrt(Float64(Float64(Float64(x * y) + Float64(x * z)) + Float64(y * z))))
end

MATLAB

function tmp = code(x, y, z)
	tmp = 2.0 * sqrt((((x * y) + (x * z)) + (y * z)));
end

Wolfram

code[x_, y_, z_] := N[(2.0 * N[Sqrt[N[(N[(N[(x * y), $MachinePrecision] + N[(x * z), $MachinePrecision]), $MachinePrecision] + N[(y * z), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]

Initial Program: 70.0% accurate, 1.0× speedup

Math

\[\begin{array}{l} \\ 2 \cdot \sqrt{\left(x \cdot y + x \cdot z\right) + y \cdot z} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (* 2.0 (sqrt (+ (+ (* x y) (* x z)) (* y z)))))

C

double code(double x, double y, double z) {
	return 2.0 * sqrt((((x * y) + (x * z)) + (y * z)));
}

Fortran

real(8) function code(x, y, z)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    code = 2.0d0 * sqrt((((x * y) + (x * z)) + (y * z)))
end function

Java

public static double code(double x, double y, double z) {
	return 2.0 * Math.sqrt((((x * y) + (x * z)) + (y * z)));
}

Python

def code(x, y, z):
	return 2.0 * math.sqrt((((x * y) + (x * z)) + (y * z)))

Julia

function code(x, y, z)
	return Float64(2.0 * sqrt(Float64(Float64(Float64(x * y) + Float64(x * z)) + Float64(y * z))))
end

MATLAB

function tmp = code(x, y, z)
	tmp = 2.0 * sqrt((((x * y) + (x * z)) + (y * z)));
end

Wolfram

code[x_, y_, z_] := N[(2.0 * N[Sqrt[N[(N[(N[(x * y), $MachinePrecision] + N[(x * z), $MachinePrecision]), $MachinePrecision] + N[(y * z), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]

Alternative 1: 95.4% accurate, 0.7× speedup

Math

\[\begin{array}{l} [x, y, z] = \mathsf{sort}([x, y, z])\\ \\ \begin{array}{l} \mathbf{if}\;y \leq -4.9 \cdot 10^{+59}:\\ \;\;\;\;y \cdot \left(\sqrt{\frac{x + z}{y}} \cdot \left(-2\right)\right)\\ \mathbf{elif}\;y \leq 1.55 \cdot 10^{-246}:\\ \;\;\;\;2 \cdot \sqrt{\left(y \cdot x + x \cdot z\right) + y \cdot z}\\ \mathbf{else}:\\ \;\;\;\;y \cdot \frac{2 \cdot \sqrt{z}}{\sqrt{y}}\\ \end{array} \end{array} \]

FPCore

NOTE: x, y, and z should be sorted in increasing order before calling this function.
(FPCore (x y z)
 :precision binary64
 (if (<= y -4.9e+59)
   (* y (* (sqrt (/ (+ x z) y)) (- 2.0)))
   (if (<= y 1.55e-246)
     (* 2.0 (sqrt (+ (+ (* y x) (* x z)) (* y z))))
     (* y (/ (* 2.0 (sqrt z)) (sqrt y))))))

C

assert(x < y && y < z);
double code(double x, double y, double z) {
	double tmp;
	if (y <= -4.9e+59) {
		tmp = y * (sqrt(((x + z) / y)) * -2.0);
	} else if (y <= 1.55e-246) {
		tmp = 2.0 * sqrt((((y * x) + (x * z)) + (y * z)));
	} else {
		tmp = y * ((2.0 * sqrt(z)) / sqrt(y));
	}
	return tmp;
}

Fortran

NOTE: x, y, and z should be sorted in increasing order before calling this function.
real(8) function code(x, y, z)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8) :: tmp
    if (y <= (-4.9d+59)) then
        tmp = y * (sqrt(((x + z) / y)) * -2.0d0)
    else if (y <= 1.55d-246) then
        tmp = 2.0d0 * sqrt((((y * x) + (x * z)) + (y * z)))
    else
        tmp = y * ((2.0d0 * sqrt(z)) / sqrt(y))
    end if
    code = tmp
end function

Java

assert x < y && y < z;
public static double code(double x, double y, double z) {
	double tmp;
	if (y <= -4.9e+59) {
		tmp = y * (Math.sqrt(((x + z) / y)) * -2.0);
	} else if (y <= 1.55e-246) {
		tmp = 2.0 * Math.sqrt((((y * x) + (x * z)) + (y * z)));
	} else {
		tmp = y * ((2.0 * Math.sqrt(z)) / Math.sqrt(y));
	}
	return tmp;
}

Python

[x, y, z] = sort([x, y, z])
def code(x, y, z):
	tmp = 0
	if y <= -4.9e+59:
		tmp = y * (math.sqrt(((x + z) / y)) * -2.0)
	elif y <= 1.55e-246:
		tmp = 2.0 * math.sqrt((((y * x) + (x * z)) + (y * z)))
	else:
		tmp = y * ((2.0 * math.sqrt(z)) / math.sqrt(y))
	return tmp

Julia

x, y, z = sort([x, y, z])
function code(x, y, z)
	tmp = 0.0
	if (y <= -4.9e+59)
		tmp = Float64(y * Float64(sqrt(Float64(Float64(x + z) / y)) * Float64(-2.0)));
	elseif (y <= 1.55e-246)
		tmp = Float64(2.0 * sqrt(Float64(Float64(Float64(y * x) + Float64(x * z)) + Float64(y * z))));
	else
		tmp = Float64(y * Float64(Float64(2.0 * sqrt(z)) / sqrt(y)));
	end
	return tmp
end

MATLAB

x, y, z = num2cell(sort([x, y, z])){:}
function tmp_2 = code(x, y, z)
	tmp = 0.0;
	if (y <= -4.9e+59)
		tmp = y * (sqrt(((x + z) / y)) * -2.0);
	elseif (y <= 1.55e-246)
		tmp = 2.0 * sqrt((((y * x) + (x * z)) + (y * z)));
	else
		tmp = y * ((2.0 * sqrt(z)) / sqrt(y));
	end
	tmp_2 = tmp;
end

Wolfram

NOTE: x, y, and z should be sorted in increasing order before calling this function.
code[x_, y_, z_] := If[LessEqual[y, -4.9e+59], N[(y * N[(N[Sqrt[N[(N[(x + z), $MachinePrecision] / y), $MachinePrecision]], $MachinePrecision] * (-2.0)), $MachinePrecision]), $MachinePrecision], If[LessEqual[y, 1.55e-246], N[(2.0 * N[Sqrt[N[(N[(N[(y * x), $MachinePrecision] + N[(x * z), $MachinePrecision]), $MachinePrecision] + N[(y * z), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision], N[(y * N[(N[(2.0 * N[Sqrt[z], $MachinePrecision]), $MachinePrecision] / N[Sqrt[y], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]

Derivation

1. Split input into 3 regimes

2. if y < -4.90000000000000007e59

   1. Initial program 47.1%

      \[2 \cdot \sqrt{\left(x \cdot y + x \cdot z\right) + y \cdot z} \]
   2. Add Preprocessing

   3. Taylor expanded in y around inf

      \[\leadsto \color{blue}{y \cdot \left(2 \cdot \sqrt{\frac{x + z}{y}} + \left(x \cdot z\right) \cdot \sqrt{\frac{1}{{y}^{3} \cdot \left(x + z\right)}}\right)} \]
   4. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto \color{blue}{y \cdot \left(2 \cdot \sqrt{\frac{x + z}{y}} + \left(x \cdot z\right) \cdot \sqrt{\frac{1}{{y}^{3} \cdot \left(x + z\right)}}\right)} \]

      2. +-commutative N/A

         \[\leadsto y \cdot \color{blue}{\left(\left(x \cdot z\right) \cdot \sqrt{\frac{1}{{y}^{3} \cdot \left(x + z\right)}} + 2 \cdot \sqrt{\frac{x + z}{y}}\right)} \]

      3. associate-*l* N/A

         \[\leadsto y \cdot \left(\color{blue}{x \cdot \left(z \cdot \sqrt{\frac{1}{{y}^{3} \cdot \left(x + z\right)}}\right)} + 2 \cdot \sqrt{\frac{x + z}{y}}\right) \]

      4. lower-fma.f64 N/A

         \[\leadsto y \cdot \color{blue}{\mathsf{fma}\left(x, z \cdot \sqrt{\frac{1}{{y}^{3} \cdot \left(x + z\right)}}, 2 \cdot \sqrt{\frac{x + z}{y}}\right)} \]

   5. Applied rewrites 0.7%

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

   6. Taylor expanded in y around -inf

      \[\leadsto y \cdot \left(2 \cdot \color{blue}{\left(\sqrt{\frac{x + z}{y}} \cdot {\left(\sqrt{-1}\right)}^{2}\right)}\right) \]
   7. Step-by-step derivation

   8. Applied rewrites 90.5%

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

   if -4.90000000000000007e59 < y < 1.55e-246

   1. Initial program 84.4%

      \[2 \cdot \sqrt{\left(x \cdot y + x \cdot z\right) + y \cdot z} \]
   2. Add Preprocessing

   if 1.55e-246 < y

   1. Initial program 70.2%

      \[2 \cdot \sqrt{\left(x \cdot y + x \cdot z\right) + y \cdot z} \]
   2. Add Preprocessing

   3. Taylor expanded in y around inf

      \[\leadsto \color{blue}{y \cdot \left(2 \cdot \sqrt{\frac{x + z}{y}} + \left(x \cdot z\right) \cdot \sqrt{\frac{1}{{y}^{3} \cdot \left(x + z\right)}}\right)} \]
   4. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto \color{blue}{y \cdot \left(2 \cdot \sqrt{\frac{x + z}{y}} + \left(x \cdot z\right) \cdot \sqrt{\frac{1}{{y}^{3} \cdot \left(x + z\right)}}\right)} \]

      2. +-commutative N/A

         \[\leadsto y \cdot \color{blue}{\left(\left(x \cdot z\right) \cdot \sqrt{\frac{1}{{y}^{3} \cdot \left(x + z\right)}} + 2 \cdot \sqrt{\frac{x + z}{y}}\right)} \]

      3. associate-*l* N/A

         \[\leadsto y \cdot \left(\color{blue}{x \cdot \left(z \cdot \sqrt{\frac{1}{{y}^{3} \cdot \left(x + z\right)}}\right)} + 2 \cdot \sqrt{\frac{x + z}{y}}\right) \]

      4. lower-fma.f64 N/A

         \[\leadsto y \cdot \color{blue}{\mathsf{fma}\left(x, z \cdot \sqrt{\frac{1}{{y}^{3} \cdot \left(x + z\right)}}, 2 \cdot \sqrt{\frac{x + z}{y}}\right)} \]

   5. Applied rewrites 56.8%

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

   6. Taylor expanded in x around 0

      \[\leadsto y \cdot \left(2 \cdot \color{blue}{\sqrt{\frac{z}{y}}}\right) \]
   7. Step-by-step derivation

   8. Applied rewrites 33.1%

      \[\leadsto y \cdot \left(2 \cdot \color{blue}{\sqrt{\frac{z}{y}}}\right) \]
   9. Step-by-step derivation

   10. Applied rewrites 40.2%

       \[\leadsto y \cdot \frac{\sqrt{z} \cdot 2}{\sqrt{y}} \]
3. Recombined 3 regimes into one program.

4. Final simplification 64.8%

   \[\leadsto \begin{array}{l} \mathbf{if}\;y \leq -4.9 \cdot 10^{+59}:\\ \;\;\;\;y \cdot \left(\sqrt{\frac{x + z}{y}} \cdot \left(-2\right)\right)\\ \mathbf{elif}\;y \leq 1.55 \cdot 10^{-246}:\\ \;\;\;\;2 \cdot \sqrt{\left(y \cdot x + x \cdot z\right) + y \cdot z}\\ \mathbf{else}:\\ \;\;\;\;y \cdot \frac{2 \cdot \sqrt{z}}{\sqrt{y}}\\ \end{array} \]
5. Add Preprocessing

Alternative 2: 95.8% accurate, 0.8× speedup

Math

\[\begin{array}{l} [x, y, z] = \mathsf{sort}([x, y, z])\\ \\ \begin{array}{l} \mathbf{if}\;y \leq -4.9 \cdot 10^{+59}:\\ \;\;\;\;y \cdot \left(\sqrt{\frac{x + z}{y}} \cdot \left(-2\right)\right)\\ \mathbf{elif}\;y \leq 7.2 \cdot 10^{-22}:\\ \;\;\;\;2 \cdot \sqrt{\left(y \cdot x + x \cdot z\right) + y \cdot z}\\ \mathbf{else}:\\ \;\;\;\;z \cdot \left(2 \cdot \sqrt{\frac{y + x}{z}}\right)\\ \end{array} \end{array} \]

FPCore

NOTE: x, y, and z should be sorted in increasing order before calling this function.
(FPCore (x y z)
 :precision binary64
 (if (<= y -4.9e+59)
   (* y (* (sqrt (/ (+ x z) y)) (- 2.0)))
   (if (<= y 7.2e-22)
     (* 2.0 (sqrt (+ (+ (* y x) (* x z)) (* y z))))
     (* z (* 2.0 (sqrt (/ (+ y x) z)))))))

C

assert(x < y && y < z);
double code(double x, double y, double z) {
	double tmp;
	if (y <= -4.9e+59) {
		tmp = y * (sqrt(((x + z) / y)) * -2.0);
	} else if (y <= 7.2e-22) {
		tmp = 2.0 * sqrt((((y * x) + (x * z)) + (y * z)));
	} else {
		tmp = z * (2.0 * sqrt(((y + x) / z)));
	}
	return tmp;
}

Fortran

NOTE: x, y, and z should be sorted in increasing order before calling this function.
real(8) function code(x, y, z)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8) :: tmp
    if (y <= (-4.9d+59)) then
        tmp = y * (sqrt(((x + z) / y)) * -2.0d0)
    else if (y <= 7.2d-22) then
        tmp = 2.0d0 * sqrt((((y * x) + (x * z)) + (y * z)))
    else
        tmp = z * (2.0d0 * sqrt(((y + x) / z)))
    end if
    code = tmp
end function

Java

assert x < y && y < z;
public static double code(double x, double y, double z) {
	double tmp;
	if (y <= -4.9e+59) {
		tmp = y * (Math.sqrt(((x + z) / y)) * -2.0);
	} else if (y <= 7.2e-22) {
		tmp = 2.0 * Math.sqrt((((y * x) + (x * z)) + (y * z)));
	} else {
		tmp = z * (2.0 * Math.sqrt(((y + x) / z)));
	}
	return tmp;
}

Python

[x, y, z] = sort([x, y, z])
def code(x, y, z):
	tmp = 0
	if y <= -4.9e+59:
		tmp = y * (math.sqrt(((x + z) / y)) * -2.0)
	elif y <= 7.2e-22:
		tmp = 2.0 * math.sqrt((((y * x) + (x * z)) + (y * z)))
	else:
		tmp = z * (2.0 * math.sqrt(((y + x) / z)))
	return tmp

Julia

x, y, z = sort([x, y, z])
function code(x, y, z)
	tmp = 0.0
	if (y <= -4.9e+59)
		tmp = Float64(y * Float64(sqrt(Float64(Float64(x + z) / y)) * Float64(-2.0)));
	elseif (y <= 7.2e-22)
		tmp = Float64(2.0 * sqrt(Float64(Float64(Float64(y * x) + Float64(x * z)) + Float64(y * z))));
	else
		tmp = Float64(z * Float64(2.0 * sqrt(Float64(Float64(y + x) / z))));
	end
	return tmp
end

MATLAB

x, y, z = num2cell(sort([x, y, z])){:}
function tmp_2 = code(x, y, z)
	tmp = 0.0;
	if (y <= -4.9e+59)
		tmp = y * (sqrt(((x + z) / y)) * -2.0);
	elseif (y <= 7.2e-22)
		tmp = 2.0 * sqrt((((y * x) + (x * z)) + (y * z)));
	else
		tmp = z * (2.0 * sqrt(((y + x) / z)));
	end
	tmp_2 = tmp;
end

Wolfram

NOTE: x, y, and z should be sorted in increasing order before calling this function.
code[x_, y_, z_] := If[LessEqual[y, -4.9e+59], N[(y * N[(N[Sqrt[N[(N[(x + z), $MachinePrecision] / y), $MachinePrecision]], $MachinePrecision] * (-2.0)), $MachinePrecision]), $MachinePrecision], If[LessEqual[y, 7.2e-22], N[(2.0 * N[Sqrt[N[(N[(N[(y * x), $MachinePrecision] + N[(x * z), $MachinePrecision]), $MachinePrecision] + N[(y * z), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision], N[(z * N[(2.0 * N[Sqrt[N[(N[(y + x), $MachinePrecision] / z), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]

Derivation

1. Split input into 3 regimes

2. if y < -4.90000000000000007e59

   1. Initial program 47.1%

      \[2 \cdot \sqrt{\left(x \cdot y + x \cdot z\right) + y \cdot z} \]
   2. Add Preprocessing

   3. Taylor expanded in y around inf

      \[\leadsto \color{blue}{y \cdot \left(2 \cdot \sqrt{\frac{x + z}{y}} + \left(x \cdot z\right) \cdot \sqrt{\frac{1}{{y}^{3} \cdot \left(x + z\right)}}\right)} \]
   4. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto \color{blue}{y \cdot \left(2 \cdot \sqrt{\frac{x + z}{y}} + \left(x \cdot z\right) \cdot \sqrt{\frac{1}{{y}^{3} \cdot \left(x + z\right)}}\right)} \]

      2. +-commutative N/A

         \[\leadsto y \cdot \color{blue}{\left(\left(x \cdot z\right) \cdot \sqrt{\frac{1}{{y}^{3} \cdot \left(x + z\right)}} + 2 \cdot \sqrt{\frac{x + z}{y}}\right)} \]

      3. associate-*l* N/A

         \[\leadsto y \cdot \left(\color{blue}{x \cdot \left(z \cdot \sqrt{\frac{1}{{y}^{3} \cdot \left(x + z\right)}}\right)} + 2 \cdot \sqrt{\frac{x + z}{y}}\right) \]

      4. lower-fma.f64 N/A

         \[\leadsto y \cdot \color{blue}{\mathsf{fma}\left(x, z \cdot \sqrt{\frac{1}{{y}^{3} \cdot \left(x + z\right)}}, 2 \cdot \sqrt{\frac{x + z}{y}}\right)} \]

   5. Applied rewrites 0.7%

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

   6. Taylor expanded in y around -inf

      \[\leadsto y \cdot \left(2 \cdot \color{blue}{\left(\sqrt{\frac{x + z}{y}} \cdot {\left(\sqrt{-1}\right)}^{2}\right)}\right) \]
   7. Step-by-step derivation

   8. Applied rewrites 90.5%

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

   if -4.90000000000000007e59 < y < 7.1999999999999996e-22

   1. Initial program 85.6%

      \[2 \cdot \sqrt{\left(x \cdot y + x \cdot z\right) + y \cdot z} \]
   2. Add Preprocessing

   if 7.1999999999999996e-22 < y

   1. Initial program 59.0%

      \[2 \cdot \sqrt{\left(x \cdot y + x \cdot z\right) + y \cdot z} \]
   2. Add Preprocessing
   3. Step-by-step derivation

      1. lift-sqrt.f64 N/A

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

      2. pow1/2 N/A

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

      3. sqr-pow N/A

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

      4. pow2 N/A

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

      5. lower-pow.f64 N/A

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

      6. lower-pow.f64 N/A

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

      7. lift-+.f64 N/A

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

      8. lift-+.f64 N/A

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

      9. associate-+l+ N/A

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

      10. lift-*.f64 N/A

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

      11. lower-fma.f64 N/A

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

      12. lift-*.f64 N/A

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

      13. lift-*.f64 N/A

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

      14. distribute-rgt-out N/A

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

      15. lower-*.f64 N/A

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

      16. lower-+.f64 N/A

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

      17. metadata-eval 58.9

          \[\leadsto 2 \cdot {\left({\left(\mathsf{fma}\left(x, y, z \cdot \left(x + y\right)\right)\right)}^{\color{blue}{0.25}}\right)}^{2} \]

   4. Applied rewrites 58.9%

      \[\leadsto 2 \cdot \color{blue}{{\left({\left(\mathsf{fma}\left(x, y, z \cdot \left(x + y\right)\right)\right)}^{0.25}\right)}^{2}} \]

   5. Taylor expanded in z around inf

      \[\leadsto \color{blue}{z \cdot \left(2 \cdot \sqrt{\frac{x + y}{z}} + \left(x \cdot y\right) \cdot \sqrt{\frac{1}{{z}^{3} \cdot \left(x + y\right)}}\right)} \]
   6. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto \color{blue}{z \cdot \left(2 \cdot \sqrt{\frac{x + y}{z}} + \left(x \cdot y\right) \cdot \sqrt{\frac{1}{{z}^{3} \cdot \left(x + y\right)}}\right)} \]

      2. +-commutative N/A

         \[\leadsto z \cdot \color{blue}{\left(\left(x \cdot y\right) \cdot \sqrt{\frac{1}{{z}^{3} \cdot \left(x + y\right)}} + 2 \cdot \sqrt{\frac{x + y}{z}}\right)} \]

      3. lower-fma.f64 N/A

         \[\leadsto z \cdot \color{blue}{\mathsf{fma}\left(x \cdot y, \sqrt{\frac{1}{{z}^{3} \cdot \left(x + y\right)}}, 2 \cdot \sqrt{\frac{x + y}{z}}\right)} \]

      4. *-commutative N/A

         \[\leadsto z \cdot \mathsf{fma}\left(\color{blue}{y \cdot x}, \sqrt{\frac{1}{{z}^{3} \cdot \left(x + y\right)}}, 2 \cdot \sqrt{\frac{x + y}{z}}\right) \]

      5. lower-*.f64 N/A

         \[\leadsto z \cdot \mathsf{fma}\left(\color{blue}{y \cdot x}, \sqrt{\frac{1}{{z}^{3} \cdot \left(x + y\right)}}, 2 \cdot \sqrt{\frac{x + y}{z}}\right) \]

      6. lower-sqrt.f64 N/A

         \[\leadsto z \cdot \mathsf{fma}\left(y \cdot x, \color{blue}{\sqrt{\frac{1}{{z}^{3} \cdot \left(x + y\right)}}}, 2 \cdot \sqrt{\frac{x + y}{z}}\right) \]

      7. lower-/.f64 N/A

         \[\leadsto z \cdot \mathsf{fma}\left(y \cdot x, \sqrt{\color{blue}{\frac{1}{{z}^{3} \cdot \left(x + y\right)}}}, 2 \cdot \sqrt{\frac{x + y}{z}}\right) \]

      8. lower-*.f64 N/A

         \[\leadsto z \cdot \mathsf{fma}\left(y \cdot x, \sqrt{\frac{1}{\color{blue}{{z}^{3} \cdot \left(x + y\right)}}}, 2 \cdot \sqrt{\frac{x + y}{z}}\right) \]

      9. cube-mult N/A

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

      10. unpow2 N/A

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

      11. lower-*.f64 N/A

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

      12. unpow2 N/A

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

      13. lower-*.f64 N/A

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

      14. +-commutative N/A

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

      15. lower-+.f64 N/A

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

      16. lower-*.f64 N/A

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

      17. lower-sqrt.f64 N/A

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

      18. lower-/.f64 N/A

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

   7. Applied rewrites 38.0%

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

   8. Taylor expanded in z around inf

      \[\leadsto z \cdot \left(2 \cdot \color{blue}{\sqrt{\frac{x + y}{z}}}\right) \]
   9. Step-by-step derivation

   10. Applied rewrites 45.7%

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

4. Final simplification 75.2%

   \[\leadsto \begin{array}{l} \mathbf{if}\;y \leq -4.9 \cdot 10^{+59}:\\ \;\;\;\;y \cdot \left(\sqrt{\frac{x + z}{y}} \cdot \left(-2\right)\right)\\ \mathbf{elif}\;y \leq 7.2 \cdot 10^{-22}:\\ \;\;\;\;2 \cdot \sqrt{\left(y \cdot x + x \cdot z\right) + y \cdot z}\\ \mathbf{else}:\\ \;\;\;\;z \cdot \left(2 \cdot \sqrt{\frac{y + x}{z}}\right)\\ \end{array} \]
5. Add Preprocessing

Alternative 3: 82.3% accurate, 0.8× speedup

Math

\[\begin{array}{l} [x, y, z] = \mathsf{sort}([x, y, z])\\ \\ \begin{array}{l} \mathbf{if}\;y \leq -9 \cdot 10^{-234}:\\ \;\;\;\;2 \cdot \sqrt{x \cdot \left(y + z\right)}\\ \mathbf{elif}\;y \leq 7.2 \cdot 10^{-22}:\\ \;\;\;\;2 \cdot \sqrt{\mathsf{fma}\left(z, x, y \cdot z\right)}\\ \mathbf{else}:\\ \;\;\;\;z \cdot \left(2 \cdot \sqrt{\frac{y + x}{z}}\right)\\ \end{array} \end{array} \]

FPCore

NOTE: x, y, and z should be sorted in increasing order before calling this function.
(FPCore (x y z)
 :precision binary64
 (if (<= y -9e-234)
   (* 2.0 (sqrt (* x (+ y z))))
   (if (<= y 7.2e-22)
     (* 2.0 (sqrt (fma z x (* y z))))
     (* z (* 2.0 (sqrt (/ (+ y x) z)))))))

C

assert(x < y && y < z);
double code(double x, double y, double z) {
	double tmp;
	if (y <= -9e-234) {
		tmp = 2.0 * sqrt((x * (y + z)));
	} else if (y <= 7.2e-22) {
		tmp = 2.0 * sqrt(fma(z, x, (y * z)));
	} else {
		tmp = z * (2.0 * sqrt(((y + x) / z)));
	}
	return tmp;
}

Julia

x, y, z = sort([x, y, z])
function code(x, y, z)
	tmp = 0.0
	if (y <= -9e-234)
		tmp = Float64(2.0 * sqrt(Float64(x * Float64(y + z))));
	elseif (y <= 7.2e-22)
		tmp = Float64(2.0 * sqrt(fma(z, x, Float64(y * z))));
	else
		tmp = Float64(z * Float64(2.0 * sqrt(Float64(Float64(y + x) / z))));
	end
	return tmp
end

Wolfram

NOTE: x, y, and z should be sorted in increasing order before calling this function.
code[x_, y_, z_] := If[LessEqual[y, -9e-234], N[(2.0 * N[Sqrt[N[(x * N[(y + z), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision], If[LessEqual[y, 7.2e-22], N[(2.0 * N[Sqrt[N[(z * x + N[(y * z), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision], N[(z * N[(2.0 * N[Sqrt[N[(N[(y + x), $MachinePrecision] / z), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]

Derivation

1. Split input into 3 regimes

2. if y < -9.00000000000000018e-234

   1. Initial program 64.1%

      \[2 \cdot \sqrt{\left(x \cdot y + x \cdot z\right) + y \cdot z} \]
   2. Add Preprocessing

   3. Taylor expanded in x around inf

      \[\leadsto 2 \cdot \sqrt{\color{blue}{x \cdot \left(y + z\right)}} \]
   4. Step-by-step derivation

      1. lower-*.f64 N/A

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

      2. lower-+.f64 39.8

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

   5. Applied rewrites 39.8%

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

   if -9.00000000000000018e-234 < y < 7.1999999999999996e-22

   1. Initial program 87.4%

      \[2 \cdot \sqrt{\left(x \cdot y + x \cdot z\right) + y \cdot z} \]
   2. Add Preprocessing

   3. Taylor expanded in z around inf

      \[\leadsto 2 \cdot \sqrt{\color{blue}{z \cdot \left(x + y\right)}} \]
   4. Step-by-step derivation

      1. lower-*.f64 N/A

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

      2. lower-+.f64 74.6

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

   5. Applied rewrites 74.6%

      \[\leadsto 2 \cdot \sqrt{\color{blue}{z \cdot \left(x + y\right)}} \]
   6. Step-by-step derivation

   7. Applied rewrites 74.6%

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

   if 7.1999999999999996e-22 < y

   1. Initial program 59.0%

      \[2 \cdot \sqrt{\left(x \cdot y + x \cdot z\right) + y \cdot z} \]
   2. Add Preprocessing
   3. Step-by-step derivation

      1. lift-sqrt.f64 N/A

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

      2. pow1/2 N/A

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

      3. sqr-pow N/A

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

      4. pow2 N/A

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

      5. lower-pow.f64 N/A

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

      6. lower-pow.f64 N/A

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

      7. lift-+.f64 N/A

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

      8. lift-+.f64 N/A

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

      9. associate-+l+ N/A

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

      10. lift-*.f64 N/A

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

      11. lower-fma.f64 N/A

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

      12. lift-*.f64 N/A

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

      13. lift-*.f64 N/A

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

      14. distribute-rgt-out N/A

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

      15. lower-*.f64 N/A

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

      16. lower-+.f64 N/A

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

      17. metadata-eval 58.9

          \[\leadsto 2 \cdot {\left({\left(\mathsf{fma}\left(x, y, z \cdot \left(x + y\right)\right)\right)}^{\color{blue}{0.25}}\right)}^{2} \]

   4. Applied rewrites 58.9%

      \[\leadsto 2 \cdot \color{blue}{{\left({\left(\mathsf{fma}\left(x, y, z \cdot \left(x + y\right)\right)\right)}^{0.25}\right)}^{2}} \]

   5. Taylor expanded in z around inf

      \[\leadsto \color{blue}{z \cdot \left(2 \cdot \sqrt{\frac{x + y}{z}} + \left(x \cdot y\right) \cdot \sqrt{\frac{1}{{z}^{3} \cdot \left(x + y\right)}}\right)} \]
   6. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto \color{blue}{z \cdot \left(2 \cdot \sqrt{\frac{x + y}{z}} + \left(x \cdot y\right) \cdot \sqrt{\frac{1}{{z}^{3} \cdot \left(x + y\right)}}\right)} \]

      2. +-commutative N/A

         \[\leadsto z \cdot \color{blue}{\left(\left(x \cdot y\right) \cdot \sqrt{\frac{1}{{z}^{3} \cdot \left(x + y\right)}} + 2 \cdot \sqrt{\frac{x + y}{z}}\right)} \]

      3. lower-fma.f64 N/A

         \[\leadsto z \cdot \color{blue}{\mathsf{fma}\left(x \cdot y, \sqrt{\frac{1}{{z}^{3} \cdot \left(x + y\right)}}, 2 \cdot \sqrt{\frac{x + y}{z}}\right)} \]

      4. *-commutative N/A

         \[\leadsto z \cdot \mathsf{fma}\left(\color{blue}{y \cdot x}, \sqrt{\frac{1}{{z}^{3} \cdot \left(x + y\right)}}, 2 \cdot \sqrt{\frac{x + y}{z}}\right) \]

      5. lower-*.f64 N/A

         \[\leadsto z \cdot \mathsf{fma}\left(\color{blue}{y \cdot x}, \sqrt{\frac{1}{{z}^{3} \cdot \left(x + y\right)}}, 2 \cdot \sqrt{\frac{x + y}{z}}\right) \]

      6. lower-sqrt.f64 N/A

         \[\leadsto z \cdot \mathsf{fma}\left(y \cdot x, \color{blue}{\sqrt{\frac{1}{{z}^{3} \cdot \left(x + y\right)}}}, 2 \cdot \sqrt{\frac{x + y}{z}}\right) \]

      7. lower-/.f64 N/A

         \[\leadsto z \cdot \mathsf{fma}\left(y \cdot x, \sqrt{\color{blue}{\frac{1}{{z}^{3} \cdot \left(x + y\right)}}}, 2 \cdot \sqrt{\frac{x + y}{z}}\right) \]

      8. lower-*.f64 N/A

         \[\leadsto z \cdot \mathsf{fma}\left(y \cdot x, \sqrt{\frac{1}{\color{blue}{{z}^{3} \cdot \left(x + y\right)}}}, 2 \cdot \sqrt{\frac{x + y}{z}}\right) \]

      9. cube-mult N/A

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

      10. unpow2 N/A

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

      11. lower-*.f64 N/A

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

      12. unpow2 N/A

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

      13. lower-*.f64 N/A

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

      14. +-commutative N/A

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

      15. lower-+.f64 N/A

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

      16. lower-*.f64 N/A

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

      17. lower-sqrt.f64 N/A

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

      18. lower-/.f64 N/A

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

   7. Applied rewrites 38.0%

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

   8. Taylor expanded in z around inf

      \[\leadsto z \cdot \left(2 \cdot \color{blue}{\sqrt{\frac{x + y}{z}}}\right) \]
   9. Step-by-step derivation

   10. Applied rewrites 45.7%

       \[\leadsto z \cdot \left(2 \cdot \color{blue}{\sqrt{\frac{y + x}{z}}}\right) \]
3. Recombined 3 regimes into one program.
4. Add Preprocessing

Alternative 4: 82.0% accurate, 0.8× speedup

Math

\[\begin{array}{l} [x, y, z] = \mathsf{sort}([x, y, z])\\ \\ \begin{array}{l} \mathbf{if}\;y \leq -9 \cdot 10^{-234}:\\ \;\;\;\;2 \cdot \sqrt{x \cdot \left(y + z\right)}\\ \mathbf{elif}\;y \leq 1.4 \cdot 10^{+26}:\\ \;\;\;\;2 \cdot \sqrt{\mathsf{fma}\left(z, x, y \cdot z\right)}\\ \mathbf{else}:\\ \;\;\;\;y \cdot \left(2 \cdot \sqrt{\frac{x + z}{y}}\right)\\ \end{array} \end{array} \]

FPCore

NOTE: x, y, and z should be sorted in increasing order before calling this function.
(FPCore (x y z)
 :precision binary64
 (if (<= y -9e-234)
   (* 2.0 (sqrt (* x (+ y z))))
   (if (<= y 1.4e+26)
     (* 2.0 (sqrt (fma z x (* y z))))
     (* y (* 2.0 (sqrt (/ (+ x z) y)))))))

C

assert(x < y && y < z);
double code(double x, double y, double z) {
	double tmp;
	if (y <= -9e-234) {
		tmp = 2.0 * sqrt((x * (y + z)));
	} else if (y <= 1.4e+26) {
		tmp = 2.0 * sqrt(fma(z, x, (y * z)));
	} else {
		tmp = y * (2.0 * sqrt(((x + z) / y)));
	}
	return tmp;
}

Julia

x, y, z = sort([x, y, z])
function code(x, y, z)
	tmp = 0.0
	if (y <= -9e-234)
		tmp = Float64(2.0 * sqrt(Float64(x * Float64(y + z))));
	elseif (y <= 1.4e+26)
		tmp = Float64(2.0 * sqrt(fma(z, x, Float64(y * z))));
	else
		tmp = Float64(y * Float64(2.0 * sqrt(Float64(Float64(x + z) / y))));
	end
	return tmp
end

Wolfram

NOTE: x, y, and z should be sorted in increasing order before calling this function.
code[x_, y_, z_] := If[LessEqual[y, -9e-234], N[(2.0 * N[Sqrt[N[(x * N[(y + z), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision], If[LessEqual[y, 1.4e+26], N[(2.0 * N[Sqrt[N[(z * x + N[(y * z), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision], N[(y * N[(2.0 * N[Sqrt[N[(N[(x + z), $MachinePrecision] / y), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]

Derivation

1. Split input into 3 regimes

2. if y < -9.00000000000000018e-234

   1. Initial program 64.1%

      \[2 \cdot \sqrt{\left(x \cdot y + x \cdot z\right) + y \cdot z} \]
   2. Add Preprocessing

   3. Taylor expanded in x around inf

      \[\leadsto 2 \cdot \sqrt{\color{blue}{x \cdot \left(y + z\right)}} \]
   4. Step-by-step derivation

      1. lower-*.f64 N/A

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

      2. lower-+.f64 39.8

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

   5. Applied rewrites 39.8%

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

   if -9.00000000000000018e-234 < y < 1.4e26

   1. Initial program 88.1%

      \[2 \cdot \sqrt{\left(x \cdot y + x \cdot z\right) + y \cdot z} \]
   2. Add Preprocessing

   3. Taylor expanded in z around inf

      \[\leadsto 2 \cdot \sqrt{\color{blue}{z \cdot \left(x + y\right)}} \]
   4. Step-by-step derivation

      1. lower-*.f64 N/A

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

      2. lower-+.f64 71.8

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

   5. Applied rewrites 71.8%

      \[\leadsto 2 \cdot \sqrt{\color{blue}{z \cdot \left(x + y\right)}} \]
   6. Step-by-step derivation

   7. Applied rewrites 71.8%

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

   if 1.4e26 < y

   1. Initial program 51.9%

      \[2 \cdot \sqrt{\left(x \cdot y + x \cdot z\right) + y \cdot z} \]
   2. Add Preprocessing

   3. Taylor expanded in y around inf

      \[\leadsto \color{blue}{y \cdot \left(2 \cdot \sqrt{\frac{x + z}{y}} + \left(x \cdot z\right) \cdot \sqrt{\frac{1}{{y}^{3} \cdot \left(x + z\right)}}\right)} \]
   4. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto \color{blue}{y \cdot \left(2 \cdot \sqrt{\frac{x + z}{y}} + \left(x \cdot z\right) \cdot \sqrt{\frac{1}{{y}^{3} \cdot \left(x + z\right)}}\right)} \]

      2. +-commutative N/A

         \[\leadsto y \cdot \color{blue}{\left(\left(x \cdot z\right) \cdot \sqrt{\frac{1}{{y}^{3} \cdot \left(x + z\right)}} + 2 \cdot \sqrt{\frac{x + z}{y}}\right)} \]

      3. associate-*l* N/A

         \[\leadsto y \cdot \left(\color{blue}{x \cdot \left(z \cdot \sqrt{\frac{1}{{y}^{3} \cdot \left(x + z\right)}}\right)} + 2 \cdot \sqrt{\frac{x + z}{y}}\right) \]

      4. lower-fma.f64 N/A

         \[\leadsto y \cdot \color{blue}{\mathsf{fma}\left(x, z \cdot \sqrt{\frac{1}{{y}^{3} \cdot \left(x + z\right)}}, 2 \cdot \sqrt{\frac{x + z}{y}}\right)} \]

   5. Applied rewrites 86.5%

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

   6. Taylor expanded in y around inf

      \[\leadsto y \cdot \left(2 \cdot \color{blue}{\sqrt{\frac{x + z}{y}}}\right) \]
   7. Step-by-step derivation

   8. Applied rewrites 86.5%

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

4. Final simplification 62.0%

   \[\leadsto \begin{array}{l} \mathbf{if}\;y \leq -9 \cdot 10^{-234}:\\ \;\;\;\;2 \cdot \sqrt{x \cdot \left(y + z\right)}\\ \mathbf{elif}\;y \leq 1.4 \cdot 10^{+26}:\\ \;\;\;\;2 \cdot \sqrt{\mathsf{fma}\left(z, x, y \cdot z\right)}\\ \mathbf{else}:\\ \;\;\;\;y \cdot \left(2 \cdot \sqrt{\frac{x + z}{y}}\right)\\ \end{array} \]
5. Add Preprocessing

Alternative 5: 82.0% accurate, 0.8× speedup

Math

\[\begin{array}{l} [x, y, z] = \mathsf{sort}([x, y, z])\\ \\ \begin{array}{l} \mathbf{if}\;y \leq -9 \cdot 10^{-234}:\\ \;\;\;\;2 \cdot \sqrt{x \cdot \left(y + z\right)}\\ \mathbf{elif}\;y \leq 3.7 \cdot 10^{+28}:\\ \;\;\;\;2 \cdot \sqrt{\mathsf{fma}\left(z, x, y \cdot z\right)}\\ \mathbf{else}:\\ \;\;\;\;y \cdot \left(2 \cdot \sqrt{\frac{z}{y}}\right)\\ \end{array} \end{array} \]

FPCore

NOTE: x, y, and z should be sorted in increasing order before calling this function.
(FPCore (x y z)
 :precision binary64
 (if (<= y -9e-234)
   (* 2.0 (sqrt (* x (+ y z))))
   (if (<= y 3.7e+28)
     (* 2.0 (sqrt (fma z x (* y z))))
     (* y (* 2.0 (sqrt (/ z y)))))))

C

assert(x < y && y < z);
double code(double x, double y, double z) {
	double tmp;
	if (y <= -9e-234) {
		tmp = 2.0 * sqrt((x * (y + z)));
	} else if (y <= 3.7e+28) {
		tmp = 2.0 * sqrt(fma(z, x, (y * z)));
	} else {
		tmp = y * (2.0 * sqrt((z / y)));
	}
	return tmp;
}

Julia

x, y, z = sort([x, y, z])
function code(x, y, z)
	tmp = 0.0
	if (y <= -9e-234)
		tmp = Float64(2.0 * sqrt(Float64(x * Float64(y + z))));
	elseif (y <= 3.7e+28)
		tmp = Float64(2.0 * sqrt(fma(z, x, Float64(y * z))));
	else
		tmp = Float64(y * Float64(2.0 * sqrt(Float64(z / y))));
	end
	return tmp
end

Wolfram

NOTE: x, y, and z should be sorted in increasing order before calling this function.
code[x_, y_, z_] := If[LessEqual[y, -9e-234], N[(2.0 * N[Sqrt[N[(x * N[(y + z), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision], If[LessEqual[y, 3.7e+28], N[(2.0 * N[Sqrt[N[(z * x + N[(y * z), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision], N[(y * N[(2.0 * N[Sqrt[N[(z / y), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]

Derivation

1. Split input into 3 regimes

2. if y < -9.00000000000000018e-234

   1. Initial program 64.1%

      \[2 \cdot \sqrt{\left(x \cdot y + x \cdot z\right) + y \cdot z} \]
   2. Add Preprocessing

   3. Taylor expanded in x around inf

      \[\leadsto 2 \cdot \sqrt{\color{blue}{x \cdot \left(y + z\right)}} \]
   4. Step-by-step derivation

      1. lower-*.f64 N/A

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

      2. lower-+.f64 39.8

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

   5. Applied rewrites 39.8%

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

   if -9.00000000000000018e-234 < y < 3.6999999999999999e28

   1. Initial program 88.1%

      \[2 \cdot \sqrt{\left(x \cdot y + x \cdot z\right) + y \cdot z} \]
   2. Add Preprocessing

   3. Taylor expanded in z around inf

      \[\leadsto 2 \cdot \sqrt{\color{blue}{z \cdot \left(x + y\right)}} \]
   4. Step-by-step derivation

      1. lower-*.f64 N/A

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

      2. lower-+.f64 71.8

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

   5. Applied rewrites 71.8%

      \[\leadsto 2 \cdot \sqrt{\color{blue}{z \cdot \left(x + y\right)}} \]
   6. Step-by-step derivation

   7. Applied rewrites 71.8%

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

   if 3.6999999999999999e28 < y

   1. Initial program 51.9%

      \[2 \cdot \sqrt{\left(x \cdot y + x \cdot z\right) + y \cdot z} \]
   2. Add Preprocessing

   3. Taylor expanded in y around inf

      \[\leadsto \color{blue}{y \cdot \left(2 \cdot \sqrt{\frac{x + z}{y}} + \left(x \cdot z\right) \cdot \sqrt{\frac{1}{{y}^{3} \cdot \left(x + z\right)}}\right)} \]
   4. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto \color{blue}{y \cdot \left(2 \cdot \sqrt{\frac{x + z}{y}} + \left(x \cdot z\right) \cdot \sqrt{\frac{1}{{y}^{3} \cdot \left(x + z\right)}}\right)} \]

      2. +-commutative N/A

         \[\leadsto y \cdot \color{blue}{\left(\left(x \cdot z\right) \cdot \sqrt{\frac{1}{{y}^{3} \cdot \left(x + z\right)}} + 2 \cdot \sqrt{\frac{x + z}{y}}\right)} \]

      3. associate-*l* N/A

         \[\leadsto y \cdot \left(\color{blue}{x \cdot \left(z \cdot \sqrt{\frac{1}{{y}^{3} \cdot \left(x + z\right)}}\right)} + 2 \cdot \sqrt{\frac{x + z}{y}}\right) \]

      4. lower-fma.f64 N/A

         \[\leadsto y \cdot \color{blue}{\mathsf{fma}\left(x, z \cdot \sqrt{\frac{1}{{y}^{3} \cdot \left(x + z\right)}}, 2 \cdot \sqrt{\frac{x + z}{y}}\right)} \]

   5. Applied rewrites 86.5%

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

   6. Taylor expanded in x around 0

      \[\leadsto y \cdot \left(2 \cdot \color{blue}{\sqrt{\frac{z}{y}}}\right) \]
   7. Step-by-step derivation

   8. Applied rewrites 43.2%

      \[\leadsto y \cdot \left(2 \cdot \color{blue}{\sqrt{\frac{z}{y}}}\right) \]
3. Recombined 3 regimes into one program.
4. Add Preprocessing

Alternative 6: 83.6% accurate, 0.9× speedup

Math

\[\begin{array}{l} [x, y, z] = \mathsf{sort}([x, y, z])\\ \\ \begin{array}{l} \mathbf{if}\;y \leq 7.2 \cdot 10^{-22}:\\ \;\;\;\;2 \cdot \sqrt{\left(y \cdot x + x \cdot z\right) + y \cdot z}\\ \mathbf{else}:\\ \;\;\;\;z \cdot \left(2 \cdot \sqrt{\frac{y + x}{z}}\right)\\ \end{array} \end{array} \]

FPCore

NOTE: x, y, and z should be sorted in increasing order before calling this function.
(FPCore (x y z)
 :precision binary64
 (if (<= y 7.2e-22)
   (* 2.0 (sqrt (+ (+ (* y x) (* x z)) (* y z))))
   (* z (* 2.0 (sqrt (/ (+ y x) z))))))

C

assert(x < y && y < z);
double code(double x, double y, double z) {
	double tmp;
	if (y <= 7.2e-22) {
		tmp = 2.0 * sqrt((((y * x) + (x * z)) + (y * z)));
	} else {
		tmp = z * (2.0 * sqrt(((y + x) / z)));
	}
	return tmp;
}

Fortran

NOTE: x, y, and z should be sorted in increasing order before calling this function.
real(8) function code(x, y, z)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8) :: tmp
    if (y <= 7.2d-22) then
        tmp = 2.0d0 * sqrt((((y * x) + (x * z)) + (y * z)))
    else
        tmp = z * (2.0d0 * sqrt(((y + x) / z)))
    end if
    code = tmp
end function

Java

assert x < y && y < z;
public static double code(double x, double y, double z) {
	double tmp;
	if (y <= 7.2e-22) {
		tmp = 2.0 * Math.sqrt((((y * x) + (x * z)) + (y * z)));
	} else {
		tmp = z * (2.0 * Math.sqrt(((y + x) / z)));
	}
	return tmp;
}

Python

[x, y, z] = sort([x, y, z])
def code(x, y, z):
	tmp = 0
	if y <= 7.2e-22:
		tmp = 2.0 * math.sqrt((((y * x) + (x * z)) + (y * z)))
	else:
		tmp = z * (2.0 * math.sqrt(((y + x) / z)))
	return tmp

Julia

x, y, z = sort([x, y, z])
function code(x, y, z)
	tmp = 0.0
	if (y <= 7.2e-22)
		tmp = Float64(2.0 * sqrt(Float64(Float64(Float64(y * x) + Float64(x * z)) + Float64(y * z))));
	else
		tmp = Float64(z * Float64(2.0 * sqrt(Float64(Float64(y + x) / z))));
	end
	return tmp
end

MATLAB

x, y, z = num2cell(sort([x, y, z])){:}
function tmp_2 = code(x, y, z)
	tmp = 0.0;
	if (y <= 7.2e-22)
		tmp = 2.0 * sqrt((((y * x) + (x * z)) + (y * z)));
	else
		tmp = z * (2.0 * sqrt(((y + x) / z)));
	end
	tmp_2 = tmp;
end

Wolfram

NOTE: x, y, and z should be sorted in increasing order before calling this function.
code[x_, y_, z_] := If[LessEqual[y, 7.2e-22], N[(2.0 * N[Sqrt[N[(N[(N[(y * x), $MachinePrecision] + N[(x * z), $MachinePrecision]), $MachinePrecision] + N[(y * z), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision], N[(z * N[(2.0 * N[Sqrt[N[(N[(y + x), $MachinePrecision] / z), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]

Derivation

1. Split input into 2 regimes

2. if y < 7.1999999999999996e-22

   1. Initial program 73.8%

      \[2 \cdot \sqrt{\left(x \cdot y + x \cdot z\right) + y \cdot z} \]
   2. Add Preprocessing

   if 7.1999999999999996e-22 < y

   1. Initial program 59.0%

      \[2 \cdot \sqrt{\left(x \cdot y + x \cdot z\right) + y \cdot z} \]
   2. Add Preprocessing
   3. Step-by-step derivation

      1. lift-sqrt.f64 N/A

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

      2. pow1/2 N/A

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

      3. sqr-pow N/A

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

      4. pow2 N/A

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

      5. lower-pow.f64 N/A

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

      6. lower-pow.f64 N/A

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

      7. lift-+.f64 N/A

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

      8. lift-+.f64 N/A

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

      9. associate-+l+ N/A

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

      10. lift-*.f64 N/A

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

      11. lower-fma.f64 N/A

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

      12. lift-*.f64 N/A

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

      13. lift-*.f64 N/A

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

      14. distribute-rgt-out N/A

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

      15. lower-*.f64 N/A

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

      16. lower-+.f64 N/A

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

      17. metadata-eval 58.9

          \[\leadsto 2 \cdot {\left({\left(\mathsf{fma}\left(x, y, z \cdot \left(x + y\right)\right)\right)}^{\color{blue}{0.25}}\right)}^{2} \]

   4. Applied rewrites 58.9%

      \[\leadsto 2 \cdot \color{blue}{{\left({\left(\mathsf{fma}\left(x, y, z \cdot \left(x + y\right)\right)\right)}^{0.25}\right)}^{2}} \]

   5. Taylor expanded in z around inf

      \[\leadsto \color{blue}{z \cdot \left(2 \cdot \sqrt{\frac{x + y}{z}} + \left(x \cdot y\right) \cdot \sqrt{\frac{1}{{z}^{3} \cdot \left(x + y\right)}}\right)} \]
   6. Step-by-step derivation

      1. lower-*.f64 N/A

         \[\leadsto \color{blue}{z \cdot \left(2 \cdot \sqrt{\frac{x + y}{z}} + \left(x \cdot y\right) \cdot \sqrt{\frac{1}{{z}^{3} \cdot \left(x + y\right)}}\right)} \]

      2. +-commutative N/A

         \[\leadsto z \cdot \color{blue}{\left(\left(x \cdot y\right) \cdot \sqrt{\frac{1}{{z}^{3} \cdot \left(x + y\right)}} + 2 \cdot \sqrt{\frac{x + y}{z}}\right)} \]

      3. lower-fma.f64 N/A

         \[\leadsto z \cdot \color{blue}{\mathsf{fma}\left(x \cdot y, \sqrt{\frac{1}{{z}^{3} \cdot \left(x + y\right)}}, 2 \cdot \sqrt{\frac{x + y}{z}}\right)} \]

      4. *-commutative N/A

         \[\leadsto z \cdot \mathsf{fma}\left(\color{blue}{y \cdot x}, \sqrt{\frac{1}{{z}^{3} \cdot \left(x + y\right)}}, 2 \cdot \sqrt{\frac{x + y}{z}}\right) \]

      5. lower-*.f64 N/A

         \[\leadsto z \cdot \mathsf{fma}\left(\color{blue}{y \cdot x}, \sqrt{\frac{1}{{z}^{3} \cdot \left(x + y\right)}}, 2 \cdot \sqrt{\frac{x + y}{z}}\right) \]

      6. lower-sqrt.f64 N/A

         \[\leadsto z \cdot \mathsf{fma}\left(y \cdot x, \color{blue}{\sqrt{\frac{1}{{z}^{3} \cdot \left(x + y\right)}}}, 2 \cdot \sqrt{\frac{x + y}{z}}\right) \]

      7. lower-/.f64 N/A

         \[\leadsto z \cdot \mathsf{fma}\left(y \cdot x, \sqrt{\color{blue}{\frac{1}{{z}^{3} \cdot \left(x + y\right)}}}, 2 \cdot \sqrt{\frac{x + y}{z}}\right) \]

      8. lower-*.f64 N/A

         \[\leadsto z \cdot \mathsf{fma}\left(y \cdot x, \sqrt{\frac{1}{\color{blue}{{z}^{3} \cdot \left(x + y\right)}}}, 2 \cdot \sqrt{\frac{x + y}{z}}\right) \]

      9. cube-mult N/A

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

      10. unpow2 N/A

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

      11. lower-*.f64 N/A

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

      12. unpow2 N/A

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

      13. lower-*.f64 N/A

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

      14. +-commutative N/A

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

      15. lower-+.f64 N/A

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

      16. lower-*.f64 N/A

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

      17. lower-sqrt.f64 N/A

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

      18. lower-/.f64 N/A

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

   7. Applied rewrites 38.0%

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

   8. Taylor expanded in z around inf

      \[\leadsto z \cdot \left(2 \cdot \color{blue}{\sqrt{\frac{x + y}{z}}}\right) \]
   9. Step-by-step derivation

   10. Applied rewrites 45.7%

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

4. Final simplification 65.7%

   \[\leadsto \begin{array}{l} \mathbf{if}\;y \leq 7.2 \cdot 10^{-22}:\\ \;\;\;\;2 \cdot \sqrt{\left(y \cdot x + x \cdot z\right) + y \cdot z}\\ \mathbf{else}:\\ \;\;\;\;z \cdot \left(2 \cdot \sqrt{\frac{y + x}{z}}\right)\\ \end{array} \]
5. Add Preprocessing

Alternative 7: 68.9% accurate, 1.1× speedup

Math

\[\begin{array}{l} [x, y, z] = \mathsf{sort}([x, y, z])\\ \\ \begin{array}{l} \mathbf{if}\;y \leq -9 \cdot 10^{-234}:\\ \;\;\;\;2 \cdot \sqrt{x \cdot \left(y + z\right)}\\ \mathbf{else}:\\ \;\;\;\;2 \cdot \sqrt{\mathsf{fma}\left(z, x, y \cdot z\right)}\\ \end{array} \end{array} \]

FPCore

NOTE: x, y, and z should be sorted in increasing order before calling this function.
(FPCore (x y z)
 :precision binary64
 (if (<= y -9e-234)
   (* 2.0 (sqrt (* x (+ y z))))
   (* 2.0 (sqrt (fma z x (* y z))))))

C

assert(x < y && y < z);
double code(double x, double y, double z) {
	double tmp;
	if (y <= -9e-234) {
		tmp = 2.0 * sqrt((x * (y + z)));
	} else {
		tmp = 2.0 * sqrt(fma(z, x, (y * z)));
	}
	return tmp;
}

Julia

x, y, z = sort([x, y, z])
function code(x, y, z)
	tmp = 0.0
	if (y <= -9e-234)
		tmp = Float64(2.0 * sqrt(Float64(x * Float64(y + z))));
	else
		tmp = Float64(2.0 * sqrt(fma(z, x, Float64(y * z))));
	end
	return tmp
end

Wolfram

NOTE: x, y, and z should be sorted in increasing order before calling this function.
code[x_, y_, z_] := If[LessEqual[y, -9e-234], N[(2.0 * N[Sqrt[N[(x * N[(y + z), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision], N[(2.0 * N[Sqrt[N[(z * x + N[(y * z), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]]

Derivation

1. Split input into 2 regimes

2. if y < -9.00000000000000018e-234

   1. Initial program 64.1%

      \[2 \cdot \sqrt{\left(x \cdot y + x \cdot z\right) + y \cdot z} \]
   2. Add Preprocessing

   3. Taylor expanded in x around inf

      \[\leadsto 2 \cdot \sqrt{\color{blue}{x \cdot \left(y + z\right)}} \]
   4. Step-by-step derivation

      1. lower-*.f64 N/A

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

      2. lower-+.f64 39.8

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

   5. Applied rewrites 39.8%

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

   if -9.00000000000000018e-234 < y

   1. Initial program 73.4%

      \[2 \cdot \sqrt{\left(x \cdot y + x \cdot z\right) + y \cdot z} \]
   2. Add Preprocessing

   3. Taylor expanded in z around inf

      \[\leadsto 2 \cdot \sqrt{\color{blue}{z \cdot \left(x + y\right)}} \]
   4. Step-by-step derivation

      1. lower-*.f64 N/A

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

      2. lower-+.f64 52.1

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

   5. Applied rewrites 52.1%

      \[\leadsto 2 \cdot \sqrt{\color{blue}{z \cdot \left(x + y\right)}} \]
   6. Step-by-step derivation

   7. Applied rewrites 52.1%

      \[\leadsto 2 \cdot \sqrt{\mathsf{fma}\left(z, \color{blue}{x}, y \cdot z\right)} \]
3. Recombined 2 regimes into one program.
4. Add Preprocessing

Alternative 8: 68.9% accurate, 1.2× speedup

Math

\[\begin{array}{l} [x, y, z] = \mathsf{sort}([x, y, z])\\ \\ \begin{array}{l} \mathbf{if}\;y \leq -9 \cdot 10^{-234}:\\ \;\;\;\;2 \cdot \sqrt{x \cdot \left(y + z\right)}\\ \mathbf{else}:\\ \;\;\;\;2 \cdot \sqrt{z \cdot \left(y + x\right)}\\ \end{array} \end{array} \]

FPCore

NOTE: x, y, and z should be sorted in increasing order before calling this function.
(FPCore (x y z)
 :precision binary64
 (if (<= y -9e-234) (* 2.0 (sqrt (* x (+ y z)))) (* 2.0 (sqrt (* z (+ y x))))))

C

assert(x < y && y < z);
double code(double x, double y, double z) {
	double tmp;
	if (y <= -9e-234) {
		tmp = 2.0 * sqrt((x * (y + z)));
	} else {
		tmp = 2.0 * sqrt((z * (y + x)));
	}
	return tmp;
}

Fortran

NOTE: x, y, and z should be sorted in increasing order before calling this function.
real(8) function code(x, y, z)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8) :: tmp
    if (y <= (-9d-234)) then
        tmp = 2.0d0 * sqrt((x * (y + z)))
    else
        tmp = 2.0d0 * sqrt((z * (y + x)))
    end if
    code = tmp
end function

Java

assert x < y && y < z;
public static double code(double x, double y, double z) {
	double tmp;
	if (y <= -9e-234) {
		tmp = 2.0 * Math.sqrt((x * (y + z)));
	} else {
		tmp = 2.0 * Math.sqrt((z * (y + x)));
	}
	return tmp;
}

Python

[x, y, z] = sort([x, y, z])
def code(x, y, z):
	tmp = 0
	if y <= -9e-234:
		tmp = 2.0 * math.sqrt((x * (y + z)))
	else:
		tmp = 2.0 * math.sqrt((z * (y + x)))
	return tmp

Julia

x, y, z = sort([x, y, z])
function code(x, y, z)
	tmp = 0.0
	if (y <= -9e-234)
		tmp = Float64(2.0 * sqrt(Float64(x * Float64(y + z))));
	else
		tmp = Float64(2.0 * sqrt(Float64(z * Float64(y + x))));
	end
	return tmp
end

MATLAB

x, y, z = num2cell(sort([x, y, z])){:}
function tmp_2 = code(x, y, z)
	tmp = 0.0;
	if (y <= -9e-234)
		tmp = 2.0 * sqrt((x * (y + z)));
	else
		tmp = 2.0 * sqrt((z * (y + x)));
	end
	tmp_2 = tmp;
end

Wolfram

NOTE: x, y, and z should be sorted in increasing order before calling this function.
code[x_, y_, z_] := If[LessEqual[y, -9e-234], N[(2.0 * N[Sqrt[N[(x * N[(y + z), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision], N[(2.0 * N[Sqrt[N[(z * N[(y + x), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]]

Derivation

1. Split input into 2 regimes

2. if y < -9.00000000000000018e-234

   1. Initial program 64.1%

      \[2 \cdot \sqrt{\left(x \cdot y + x \cdot z\right) + y \cdot z} \]
   2. Add Preprocessing

   3. Taylor expanded in x around inf

      \[\leadsto 2 \cdot \sqrt{\color{blue}{x \cdot \left(y + z\right)}} \]
   4. Step-by-step derivation

      1. lower-*.f64 N/A

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

      2. lower-+.f64 39.8

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

   5. Applied rewrites 39.8%

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

   if -9.00000000000000018e-234 < y

   1. Initial program 73.4%

      \[2 \cdot \sqrt{\left(x \cdot y + x \cdot z\right) + y \cdot z} \]
   2. Add Preprocessing

   3. Taylor expanded in z around inf

      \[\leadsto 2 \cdot \sqrt{\color{blue}{z \cdot \left(x + y\right)}} \]
   4. Step-by-step derivation

      1. lower-*.f64 N/A

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

      2. lower-+.f64 52.1

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

   5. Applied rewrites 52.1%

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

4. Final simplification 47.0%

   \[\leadsto \begin{array}{l} \mathbf{if}\;y \leq -9 \cdot 10^{-234}:\\ \;\;\;\;2 \cdot \sqrt{x \cdot \left(y + z\right)}\\ \mathbf{else}:\\ \;\;\;\;2 \cdot \sqrt{z \cdot \left(y + x\right)}\\ \end{array} \]
5. Add Preprocessing

Alternative 9: 67.7% accurate, 1.2× speedup

Math

\[\begin{array}{l} [x, y, z] = \mathsf{sort}([x, y, z])\\ \\ \begin{array}{l} \mathbf{if}\;y \leq -9 \cdot 10^{-234}:\\ \;\;\;\;2 \cdot \sqrt{x \cdot \left(y + z\right)}\\ \mathbf{else}:\\ \;\;\;\;2 \cdot \sqrt{y \cdot z}\\ \end{array} \end{array} \]

FPCore

NOTE: x, y, and z should be sorted in increasing order before calling this function.
(FPCore (x y z)
 :precision binary64
 (if (<= y -9e-234) (* 2.0 (sqrt (* x (+ y z)))) (* 2.0 (sqrt (* y z)))))

C

assert(x < y && y < z);
double code(double x, double y, double z) {
	double tmp;
	if (y <= -9e-234) {
		tmp = 2.0 * sqrt((x * (y + z)));
	} else {
		tmp = 2.0 * sqrt((y * z));
	}
	return tmp;
}

Fortran

NOTE: x, y, and z should be sorted in increasing order before calling this function.
real(8) function code(x, y, z)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8) :: tmp
    if (y <= (-9d-234)) then
        tmp = 2.0d0 * sqrt((x * (y + z)))
    else
        tmp = 2.0d0 * sqrt((y * z))
    end if
    code = tmp
end function

Java

assert x < y && y < z;
public static double code(double x, double y, double z) {
	double tmp;
	if (y <= -9e-234) {
		tmp = 2.0 * Math.sqrt((x * (y + z)));
	} else {
		tmp = 2.0 * Math.sqrt((y * z));
	}
	return tmp;
}

Python

[x, y, z] = sort([x, y, z])
def code(x, y, z):
	tmp = 0
	if y <= -9e-234:
		tmp = 2.0 * math.sqrt((x * (y + z)))
	else:
		tmp = 2.0 * math.sqrt((y * z))
	return tmp

Julia

x, y, z = sort([x, y, z])
function code(x, y, z)
	tmp = 0.0
	if (y <= -9e-234)
		tmp = Float64(2.0 * sqrt(Float64(x * Float64(y + z))));
	else
		tmp = Float64(2.0 * sqrt(Float64(y * z)));
	end
	return tmp
end

MATLAB

x, y, z = num2cell(sort([x, y, z])){:}
function tmp_2 = code(x, y, z)
	tmp = 0.0;
	if (y <= -9e-234)
		tmp = 2.0 * sqrt((x * (y + z)));
	else
		tmp = 2.0 * sqrt((y * z));
	end
	tmp_2 = tmp;
end

Wolfram

NOTE: x, y, and z should be sorted in increasing order before calling this function.
code[x_, y_, z_] := If[LessEqual[y, -9e-234], N[(2.0 * N[Sqrt[N[(x * N[(y + z), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision], N[(2.0 * N[Sqrt[N[(y * z), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]]

Derivation

1. Split input into 2 regimes

2. if y < -9.00000000000000018e-234

   1. Initial program 64.1%

      \[2 \cdot \sqrt{\left(x \cdot y + x \cdot z\right) + y \cdot z} \]
   2. Add Preprocessing

   3. Taylor expanded in x around inf

      \[\leadsto 2 \cdot \sqrt{\color{blue}{x \cdot \left(y + z\right)}} \]
   4. Step-by-step derivation

      1. lower-*.f64 N/A

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

      2. lower-+.f64 39.8

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

   5. Applied rewrites 39.8%

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

   if -9.00000000000000018e-234 < y

   1. Initial program 73.4%

      \[2 \cdot \sqrt{\left(x \cdot y + x \cdot z\right) + y \cdot z} \]
   2. Add Preprocessing

   3. Taylor expanded in x around 0

      \[\leadsto 2 \cdot \sqrt{\color{blue}{y \cdot z}} \]
   4. Step-by-step derivation

      1. lower-*.f64 24.8

         \[\leadsto 2 \cdot \sqrt{\color{blue}{y \cdot z}} \]

   5. Applied rewrites 24.8%

      \[\leadsto 2 \cdot \sqrt{\color{blue}{y \cdot z}} \]
3. Recombined 2 regimes into one program.
4. Add Preprocessing

Alternative 10: 66.7% accurate, 1.4× speedup

Math

\[\begin{array}{l} [x, y, z] = \mathsf{sort}([x, y, z])\\ \\ \begin{array}{l} \mathbf{if}\;y \leq -9 \cdot 10^{-234}:\\ \;\;\;\;2 \cdot \sqrt{y \cdot x}\\ \mathbf{else}:\\ \;\;\;\;2 \cdot \sqrt{y \cdot z}\\ \end{array} \end{array} \]

FPCore

NOTE: x, y, and z should be sorted in increasing order before calling this function.
(FPCore (x y z)
 :precision binary64
 (if (<= y -9e-234) (* 2.0 (sqrt (* y x))) (* 2.0 (sqrt (* y z)))))

C

assert(x < y && y < z);
double code(double x, double y, double z) {
	double tmp;
	if (y <= -9e-234) {
		tmp = 2.0 * sqrt((y * x));
	} else {
		tmp = 2.0 * sqrt((y * z));
	}
	return tmp;
}

Fortran

NOTE: x, y, and z should be sorted in increasing order before calling this function.
real(8) function code(x, y, z)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8) :: tmp
    if (y <= (-9d-234)) then
        tmp = 2.0d0 * sqrt((y * x))
    else
        tmp = 2.0d0 * sqrt((y * z))
    end if
    code = tmp
end function

Java

assert x < y && y < z;
public static double code(double x, double y, double z) {
	double tmp;
	if (y <= -9e-234) {
		tmp = 2.0 * Math.sqrt((y * x));
	} else {
		tmp = 2.0 * Math.sqrt((y * z));
	}
	return tmp;
}

Python

[x, y, z] = sort([x, y, z])
def code(x, y, z):
	tmp = 0
	if y <= -9e-234:
		tmp = 2.0 * math.sqrt((y * x))
	else:
		tmp = 2.0 * math.sqrt((y * z))
	return tmp

Julia

x, y, z = sort([x, y, z])
function code(x, y, z)
	tmp = 0.0
	if (y <= -9e-234)
		tmp = Float64(2.0 * sqrt(Float64(y * x)));
	else
		tmp = Float64(2.0 * sqrt(Float64(y * z)));
	end
	return tmp
end

MATLAB

x, y, z = num2cell(sort([x, y, z])){:}
function tmp_2 = code(x, y, z)
	tmp = 0.0;
	if (y <= -9e-234)
		tmp = 2.0 * sqrt((y * x));
	else
		tmp = 2.0 * sqrt((y * z));
	end
	tmp_2 = tmp;
end

Wolfram

NOTE: x, y, and z should be sorted in increasing order before calling this function.
code[x_, y_, z_] := If[LessEqual[y, -9e-234], N[(2.0 * N[Sqrt[N[(y * x), $MachinePrecision]], $MachinePrecision]), $MachinePrecision], N[(2.0 * N[Sqrt[N[(y * z), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]]

Derivation

1. Split input into 2 regimes

2. if y < -9.00000000000000018e-234

   1. Initial program 64.1%

      \[2 \cdot \sqrt{\left(x \cdot y + x \cdot z\right) + y \cdot z} \]
   2. Add Preprocessing

   3. Taylor expanded in z around 0

      \[\leadsto 2 \cdot \sqrt{\color{blue}{x \cdot y}} \]
   4. Step-by-step derivation

      1. lower-*.f64 24.2

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

   5. Applied rewrites 24.2%

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

   if -9.00000000000000018e-234 < y

   1. Initial program 73.4%

      \[2 \cdot \sqrt{\left(x \cdot y + x \cdot z\right) + y \cdot z} \]
   2. Add Preprocessing

   3. Taylor expanded in x around 0

      \[\leadsto 2 \cdot \sqrt{\color{blue}{y \cdot z}} \]
   4. Step-by-step derivation

      1. lower-*.f64 24.8

         \[\leadsto 2 \cdot \sqrt{\color{blue}{y \cdot z}} \]

   5. Applied rewrites 24.8%

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

4. Final simplification 24.5%

   \[\leadsto \begin{array}{l} \mathbf{if}\;y \leq -9 \cdot 10^{-234}:\\ \;\;\;\;2 \cdot \sqrt{y \cdot x}\\ \mathbf{else}:\\ \;\;\;\;2 \cdot \sqrt{y \cdot z}\\ \end{array} \]
5. Add Preprocessing

Alternative 11: 35.3% accurate, 1.8× speedup

Math

\[\begin{array}{l} [x, y, z] = \mathsf{sort}([x, y, z])\\ \\ 2 \cdot \sqrt{y \cdot x} \end{array} \]

FPCore

NOTE: x, y, and z should be sorted in increasing order before calling this function.
(FPCore (x y z) :precision binary64 (* 2.0 (sqrt (* y x))))

C

assert(x < y && y < z);
double code(double x, double y, double z) {
	return 2.0 * sqrt((y * x));
}

Fortran

NOTE: x, y, and z should be sorted in increasing order before calling this function.
real(8) function code(x, y, z)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    code = 2.0d0 * sqrt((y * x))
end function

Java

assert x < y && y < z;
public static double code(double x, double y, double z) {
	return 2.0 * Math.sqrt((y * x));
}

Python

[x, y, z] = sort([x, y, z])
def code(x, y, z):
	return 2.0 * math.sqrt((y * x))

Julia

x, y, z = sort([x, y, z])
function code(x, y, z)
	return Float64(2.0 * sqrt(Float64(y * x)))
end

MATLAB

x, y, z = num2cell(sort([x, y, z])){:}
function tmp = code(x, y, z)
	tmp = 2.0 * sqrt((y * x));
end

Wolfram

NOTE: x, y, and z should be sorted in increasing order before calling this function.
code[x_, y_, z_] := N[(2.0 * N[Sqrt[N[(y * x), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]

Derivation

1. Initial program 69.5%

   \[2 \cdot \sqrt{\left(x \cdot y + x \cdot z\right) + y \cdot z} \]
2. Add Preprocessing

3. Taylor expanded in z around 0

   \[\leadsto 2 \cdot \sqrt{\color{blue}{x \cdot y}} \]
4. Step-by-step derivation

   1. lower-*.f64 23.5

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

5. Applied rewrites 23.5%

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

6. Final simplification 23.5%

   \[\leadsto 2 \cdot \sqrt{y \cdot x} \]
7. Add Preprocessing

Developer Target 1: 82.9% accurate, 0.0× speedup

Math

\[\begin{array}{l} \\ \begin{array}{l} t_0 := 0.25 \cdot \left(\left({y}^{-0.75} \cdot \left({z}^{-0.75} \cdot x\right)\right) \cdot \left(y + z\right)\right) + {z}^{0.25} \cdot {y}^{0.25}\\ \mathbf{if}\;z < 7.636950090573675 \cdot 10^{+176}:\\ \;\;\;\;2 \cdot \sqrt{\left(x + y\right) \cdot z + x \cdot y}\\ \mathbf{else}:\\ \;\;\;\;\left(t\_0 \cdot t\_0\right) \cdot 2\\ \end{array} \end{array} \]

FPCore

(FPCore (x y z)
 :precision binary64
 (let* ((t_0
         (+
          (* 0.25 (* (* (pow y -0.75) (* (pow z -0.75) x)) (+ y z)))
          (* (pow z 0.25) (pow y 0.25)))))
   (if (< z 7.636950090573675e+176)
     (* 2.0 (sqrt (+ (* (+ x y) z) (* x y))))
     (* (* t_0 t_0) 2.0))))

C

double code(double x, double y, double z) {
	double t_0 = (0.25 * ((pow(y, -0.75) * (pow(z, -0.75) * x)) * (y + z))) + (pow(z, 0.25) * pow(y, 0.25));
	double tmp;
	if (z < 7.636950090573675e+176) {
		tmp = 2.0 * sqrt((((x + y) * z) + (x * y)));
	} else {
		tmp = (t_0 * t_0) * 2.0;
	}
	return tmp;
}

Fortran

real(8) function code(x, y, z)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8) :: t_0
    real(8) :: tmp
    t_0 = (0.25d0 * (((y ** (-0.75d0)) * ((z ** (-0.75d0)) * x)) * (y + z))) + ((z ** 0.25d0) * (y ** 0.25d0))
    if (z < 7.636950090573675d+176) then
        tmp = 2.0d0 * sqrt((((x + y) * z) + (x * y)))
    else
        tmp = (t_0 * t_0) * 2.0d0
    end if
    code = tmp
end function

Java

public static double code(double x, double y, double z) {
	double t_0 = (0.25 * ((Math.pow(y, -0.75) * (Math.pow(z, -0.75) * x)) * (y + z))) + (Math.pow(z, 0.25) * Math.pow(y, 0.25));
	double tmp;
	if (z < 7.636950090573675e+176) {
		tmp = 2.0 * Math.sqrt((((x + y) * z) + (x * y)));
	} else {
		tmp = (t_0 * t_0) * 2.0;
	}
	return tmp;
}

Python

def code(x, y, z):
	t_0 = (0.25 * ((math.pow(y, -0.75) * (math.pow(z, -0.75) * x)) * (y + z))) + (math.pow(z, 0.25) * math.pow(y, 0.25))
	tmp = 0
	if z < 7.636950090573675e+176:
		tmp = 2.0 * math.sqrt((((x + y) * z) + (x * y)))
	else:
		tmp = (t_0 * t_0) * 2.0
	return tmp

Julia

function code(x, y, z)
	t_0 = Float64(Float64(0.25 * Float64(Float64((y ^ -0.75) * Float64((z ^ -0.75) * x)) * Float64(y + z))) + Float64((z ^ 0.25) * (y ^ 0.25)))
	tmp = 0.0
	if (z < 7.636950090573675e+176)
		tmp = Float64(2.0 * sqrt(Float64(Float64(Float64(x + y) * z) + Float64(x * y))));
	else
		tmp = Float64(Float64(t_0 * t_0) * 2.0);
	end
	return tmp
end

MATLAB

function tmp_2 = code(x, y, z)
	t_0 = (0.25 * (((y ^ -0.75) * ((z ^ -0.75) * x)) * (y + z))) + ((z ^ 0.25) * (y ^ 0.25));
	tmp = 0.0;
	if (z < 7.636950090573675e+176)
		tmp = 2.0 * sqrt((((x + y) * z) + (x * y)));
	else
		tmp = (t_0 * t_0) * 2.0;
	end
	tmp_2 = tmp;
end

Wolfram

code[x_, y_, z_] := Block[{t$95$0 = N[(N[(0.25 * N[(N[(N[Power[y, -0.75], $MachinePrecision] * N[(N[Power[z, -0.75], $MachinePrecision] * x), $MachinePrecision]), $MachinePrecision] * N[(y + z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(N[Power[z, 0.25], $MachinePrecision] * N[Power[y, 0.25], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[Less[z, 7.636950090573675e+176], N[(2.0 * N[Sqrt[N[(N[(N[(x + y), $MachinePrecision] * z), $MachinePrecision] + N[(x * y), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision], N[(N[(t$95$0 * t$95$0), $MachinePrecision] * 2.0), $MachinePrecision]]]

Reproduce

herbie shell --seed 2024238 
(FPCore (x y z)
  :name "Diagrams.TwoD.Apollonian:descartes from diagrams-contrib-1.3.0.5"
  :precision binary64

  :alt
  (! :herbie-platform default (if (< z 763695009057367500000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000) (* 2 (sqrt (+ (* (+ x y) z) (* x y)))) (* (* (+ (* 1/4 (* (* (pow y -3/4) (* (pow z -3/4) x)) (+ y z))) (* (pow z 1/4) (pow y 1/4))) (+ (* 1/4 (* (* (pow y -3/4) (* (pow z -3/4) x)) (+ y z))) (* (pow z 1/4) (pow y 1/4)))) 2)))

  (* 2.0 (sqrt (+ (+ (* x y) (* x z)) (* y z)))))