
(FPCore (x y z) :precision binary64 (* 2.0 (sqrt (+ (+ (* x y) (* x z)) (* y z)))))
double code(double x, double y, double z) {
return 2.0 * sqrt((((x * y) + (x * z)) + (y * z)));
}
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
public static double code(double x, double y, double z) {
return 2.0 * Math.sqrt((((x * y) + (x * z)) + (y * z)));
}
def code(x, y, z): return 2.0 * math.sqrt((((x * y) + (x * z)) + (y * z)))
function code(x, y, z) return Float64(2.0 * sqrt(Float64(Float64(Float64(x * y) + Float64(x * z)) + Float64(y * z)))) end
function tmp = code(x, y, z) tmp = 2.0 * sqrt((((x * y) + (x * z)) + (y * z))); end
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]
\begin{array}{l}
\\
2 \cdot \sqrt{\left(x \cdot y + x \cdot z\right) + y \cdot z}
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 11 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y z) :precision binary64 (* 2.0 (sqrt (+ (+ (* x y) (* x z)) (* y z)))))
double code(double x, double y, double z) {
return 2.0 * sqrt((((x * y) + (x * z)) + (y * z)));
}
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
public static double code(double x, double y, double z) {
return 2.0 * Math.sqrt((((x * y) + (x * z)) + (y * z)));
}
def code(x, y, z): return 2.0 * math.sqrt((((x * y) + (x * z)) + (y * z)))
function code(x, y, z) return Float64(2.0 * sqrt(Float64(Float64(Float64(x * y) + Float64(x * z)) + Float64(y * z)))) end
function tmp = code(x, y, z) tmp = 2.0 * sqrt((((x * y) + (x * z)) + (y * z))); end
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]
\begin{array}{l}
\\
2 \cdot \sqrt{\left(x \cdot y + x \cdot z\right) + y \cdot z}
\end{array}
NOTE: x, y, and z should be sorted in increasing order before calling this function.
(FPCore (x y z)
:precision binary64
(if (<= y -4e+164)
(* 2.0 (pow (exp (* 0.25 (- (log (- (- z) x)) (log (/ -1.0 y))))) 2.0))
(if (<= y -9800000.0)
(*
2.0
(*
y
(-
(* 0.5 (* (* z x) (sqrt (/ 1.0 (* (+ z x) (pow y 3.0))))))
(sqrt (/ (+ z x) y)))))
(if (<= y -4e-276)
(* 2.0 (sqrt (* x (+ y z))))
(* 2.0 (* (sqrt (+ x (fma x (/ y z) y))) (sqrt z)))))))assert(x < y && y < z);
double code(double x, double y, double z) {
double tmp;
if (y <= -4e+164) {
tmp = 2.0 * pow(exp((0.25 * (log((-z - x)) - log((-1.0 / y))))), 2.0);
} else if (y <= -9800000.0) {
tmp = 2.0 * (y * ((0.5 * ((z * x) * sqrt((1.0 / ((z + x) * pow(y, 3.0)))))) - sqrt(((z + x) / y))));
} else if (y <= -4e-276) {
tmp = 2.0 * sqrt((x * (y + z)));
} else {
tmp = 2.0 * (sqrt((x + fma(x, (y / z), y))) * sqrt(z));
}
return tmp;
}
x, y, z = sort([x, y, z]) function code(x, y, z) tmp = 0.0 if (y <= -4e+164) tmp = Float64(2.0 * (exp(Float64(0.25 * Float64(log(Float64(Float64(-z) - x)) - log(Float64(-1.0 / y))))) ^ 2.0)); elseif (y <= -9800000.0) tmp = Float64(2.0 * Float64(y * Float64(Float64(0.5 * Float64(Float64(z * x) * sqrt(Float64(1.0 / Float64(Float64(z + x) * (y ^ 3.0)))))) - sqrt(Float64(Float64(z + x) / y))))); elseif (y <= -4e-276) tmp = Float64(2.0 * sqrt(Float64(x * Float64(y + z)))); else tmp = Float64(2.0 * Float64(sqrt(Float64(x + fma(x, Float64(y / z), y))) * sqrt(z))); end return tmp end
NOTE: x, y, and z should be sorted in increasing order before calling this function. code[x_, y_, z_] := If[LessEqual[y, -4e+164], N[(2.0 * N[Power[N[Exp[N[(0.25 * N[(N[Log[N[((-z) - x), $MachinePrecision]], $MachinePrecision] - N[Log[N[(-1.0 / y), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision], 2.0], $MachinePrecision]), $MachinePrecision], If[LessEqual[y, -9800000.0], N[(2.0 * N[(y * N[(N[(0.5 * N[(N[(z * x), $MachinePrecision] * N[Sqrt[N[(1.0 / N[(N[(z + x), $MachinePrecision] * N[Power[y, 3.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - N[Sqrt[N[(N[(z + x), $MachinePrecision] / y), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[y, -4e-276], N[(2.0 * N[Sqrt[N[(x * N[(y + z), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision], N[(2.0 * N[(N[Sqrt[N[(x + N[(x * N[(y / z), $MachinePrecision] + y), $MachinePrecision]), $MachinePrecision]], $MachinePrecision] * N[Sqrt[z], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]]
\begin{array}{l}
[x, y, z] = \mathsf{sort}([x, y, z])\\
\\
\begin{array}{l}
\mathbf{if}\;y \leq -4 \cdot 10^{+164}:\\
\;\;\;\;2 \cdot {\left(e^{0.25 \cdot \left(\log \left(\left(-z\right) - x\right) - \log \left(\frac{-1}{y}\right)\right)}\right)}^{2}\\
\mathbf{elif}\;y \leq -9800000:\\
\;\;\;\;2 \cdot \left(y \cdot \left(0.5 \cdot \left(\left(z \cdot x\right) \cdot \sqrt{\frac{1}{\left(z + x\right) \cdot {y}^{3}}}\right) - \sqrt{\frac{z + x}{y}}\right)\right)\\
\mathbf{elif}\;y \leq -4 \cdot 10^{-276}:\\
\;\;\;\;2 \cdot \sqrt{x \cdot \left(y + z\right)}\\
\mathbf{else}:\\
\;\;\;\;2 \cdot \left(\sqrt{x + \mathsf{fma}\left(x, \frac{y}{z}, y\right)} \cdot \sqrt{z}\right)\\
\end{array}
\end{array}
if y < -4e164Initial program 32.6%
associate-+l+32.6%
+-commutative32.6%
distribute-rgt-in32.6%
Simplified32.6%
add-sqr-sqrt32.4%
pow232.4%
pow1/232.4%
sqrt-pow132.4%
distribute-rgt-in32.4%
associate-+r+32.4%
*-commutative32.4%
distribute-lft-in32.4%
fma-define33.0%
metadata-eval33.0%
Applied egg-rr33.0%
Taylor expanded in y around -inf 87.0%
if -4e164 < y < -9.8e6Initial program 62.9%
associate-+l+62.9%
+-commutative62.9%
distribute-rgt-in63.1%
Simplified63.1%
Taylor expanded in y around inf 0.8%
+-commutative0.8%
*-commutative0.8%
+-commutative0.8%
Simplified0.8%
Taylor expanded in y around -inf 0.0%
*-commutative0.0%
unpow20.0%
rem-square-sqrt88.9%
Simplified88.9%
if -9.8e6 < y < -4e-276Initial program 86.0%
associate-+l+86.0%
+-commutative86.0%
distribute-rgt-in86.0%
Simplified86.0%
Taylor expanded in x around inf 56.9%
if -4e-276 < y Initial program 76.4%
associate-+l+76.4%
+-commutative76.4%
distribute-rgt-in76.5%
Simplified76.5%
Taylor expanded in z around inf 68.0%
associate-/l*61.8%
Simplified61.8%
*-commutative61.8%
sqrt-prod56.7%
+-commutative56.7%
fma-define56.7%
Applied egg-rr56.7%
Final simplification64.3%
NOTE: x, y, and z should be sorted in increasing order before calling this function.
(FPCore (x y z)
:precision binary64
(if (<= y -1950000000.0)
(* 2.0 (pow (exp (* 0.25 (- (log (- (- y) z)) (log (/ -1.0 x))))) 2.0))
(if (<= y -1.2e-212)
(* 2.0 (sqrt (* x (+ y z))))
(if (<= y -1.6e-256)
(* 2.0 (pow (exp (* 0.25 (- (log (- (- z) x)) (log (/ -1.0 y))))) 2.0))
(* 2.0 (* (sqrt (+ x (fma x (/ y z) y))) (sqrt z)))))))assert(x < y && y < z);
double code(double x, double y, double z) {
double tmp;
if (y <= -1950000000.0) {
tmp = 2.0 * pow(exp((0.25 * (log((-y - z)) - log((-1.0 / x))))), 2.0);
} else if (y <= -1.2e-212) {
tmp = 2.0 * sqrt((x * (y + z)));
} else if (y <= -1.6e-256) {
tmp = 2.0 * pow(exp((0.25 * (log((-z - x)) - log((-1.0 / y))))), 2.0);
} else {
tmp = 2.0 * (sqrt((x + fma(x, (y / z), y))) * sqrt(z));
}
return tmp;
}
x, y, z = sort([x, y, z]) function code(x, y, z) tmp = 0.0 if (y <= -1950000000.0) tmp = Float64(2.0 * (exp(Float64(0.25 * Float64(log(Float64(Float64(-y) - z)) - log(Float64(-1.0 / x))))) ^ 2.0)); elseif (y <= -1.2e-212) tmp = Float64(2.0 * sqrt(Float64(x * Float64(y + z)))); elseif (y <= -1.6e-256) tmp = Float64(2.0 * (exp(Float64(0.25 * Float64(log(Float64(Float64(-z) - x)) - log(Float64(-1.0 / y))))) ^ 2.0)); else tmp = Float64(2.0 * Float64(sqrt(Float64(x + fma(x, Float64(y / z), y))) * sqrt(z))); end return tmp end
NOTE: x, y, and z should be sorted in increasing order before calling this function. code[x_, y_, z_] := If[LessEqual[y, -1950000000.0], N[(2.0 * N[Power[N[Exp[N[(0.25 * N[(N[Log[N[((-y) - z), $MachinePrecision]], $MachinePrecision] - N[Log[N[(-1.0 / x), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision], 2.0], $MachinePrecision]), $MachinePrecision], If[LessEqual[y, -1.2e-212], N[(2.0 * N[Sqrt[N[(x * N[(y + z), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision], If[LessEqual[y, -1.6e-256], N[(2.0 * N[Power[N[Exp[N[(0.25 * N[(N[Log[N[((-z) - x), $MachinePrecision]], $MachinePrecision] - N[Log[N[(-1.0 / y), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision], 2.0], $MachinePrecision]), $MachinePrecision], N[(2.0 * N[(N[Sqrt[N[(x + N[(x * N[(y / z), $MachinePrecision] + y), $MachinePrecision]), $MachinePrecision]], $MachinePrecision] * N[Sqrt[z], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]]
\begin{array}{l}
[x, y, z] = \mathsf{sort}([x, y, z])\\
\\
\begin{array}{l}
\mathbf{if}\;y \leq -1950000000:\\
\;\;\;\;2 \cdot {\left(e^{0.25 \cdot \left(\log \left(\left(-y\right) - z\right) - \log \left(\frac{-1}{x}\right)\right)}\right)}^{2}\\
\mathbf{elif}\;y \leq -1.2 \cdot 10^{-212}:\\
\;\;\;\;2 \cdot \sqrt{x \cdot \left(y + z\right)}\\
\mathbf{elif}\;y \leq -1.6 \cdot 10^{-256}:\\
\;\;\;\;2 \cdot {\left(e^{0.25 \cdot \left(\log \left(\left(-z\right) - x\right) - \log \left(\frac{-1}{y}\right)\right)}\right)}^{2}\\
\mathbf{else}:\\
\;\;\;\;2 \cdot \left(\sqrt{x + \mathsf{fma}\left(x, \frac{y}{z}, y\right)} \cdot \sqrt{z}\right)\\
\end{array}
\end{array}
if y < -1.95e9Initial program 47.8%
associate-+l+47.8%
+-commutative47.8%
distribute-rgt-in47.9%
Simplified47.9%
add-sqr-sqrt47.7%
pow247.7%
pow1/247.7%
sqrt-pow147.7%
distribute-rgt-in47.6%
associate-+r+47.6%
*-commutative47.6%
distribute-lft-in47.6%
fma-define48.0%
metadata-eval48.0%
Applied egg-rr48.0%
Taylor expanded in x around -inf 55.3%
if -1.95e9 < y < -1.19999999999999995e-212Initial program 81.7%
associate-+l+81.7%
+-commutative81.7%
distribute-rgt-in81.7%
Simplified81.7%
Taylor expanded in x around inf 50.1%
if -1.19999999999999995e-212 < y < -1.6e-256Initial program 99.7%
associate-+l+99.7%
+-commutative99.7%
distribute-rgt-in99.7%
Simplified99.7%
add-sqr-sqrt99.5%
pow299.5%
pow1/299.5%
sqrt-pow199.5%
distribute-rgt-in99.5%
associate-+r+99.5%
*-commutative99.5%
distribute-lft-in99.5%
fma-define99.5%
metadata-eval99.5%
Applied egg-rr99.5%
Taylor expanded in y around -inf 32.0%
if -1.6e-256 < y Initial program 77.2%
associate-+l+77.2%
+-commutative77.2%
distribute-rgt-in77.3%
Simplified77.3%
Taylor expanded in z around inf 69.1%
associate-/l*63.1%
Simplified63.1%
*-commutative63.1%
sqrt-prod56.8%
+-commutative56.8%
fma-define56.8%
Applied egg-rr56.8%
Final simplification54.4%
NOTE: x, y, and z should be sorted in increasing order before calling this function.
(FPCore (x y z)
:precision binary64
(if (<= y -1900000000.0)
(*
2.0
(*
y
(-
(* 0.5 (* (* z x) (sqrt (/ 1.0 (* (+ z x) (pow y 3.0))))))
(sqrt (/ (+ z x) y)))))
(if (<= y -4e-276)
(* 2.0 (sqrt (* x (+ y z))))
(* 2.0 (* (sqrt (+ x (fma x (/ y z) y))) (sqrt z))))))assert(x < y && y < z);
double code(double x, double y, double z) {
double tmp;
if (y <= -1900000000.0) {
tmp = 2.0 * (y * ((0.5 * ((z * x) * sqrt((1.0 / ((z + x) * pow(y, 3.0)))))) - sqrt(((z + x) / y))));
} else if (y <= -4e-276) {
tmp = 2.0 * sqrt((x * (y + z)));
} else {
tmp = 2.0 * (sqrt((x + fma(x, (y / z), y))) * sqrt(z));
}
return tmp;
}
x, y, z = sort([x, y, z]) function code(x, y, z) tmp = 0.0 if (y <= -1900000000.0) tmp = Float64(2.0 * Float64(y * Float64(Float64(0.5 * Float64(Float64(z * x) * sqrt(Float64(1.0 / Float64(Float64(z + x) * (y ^ 3.0)))))) - sqrt(Float64(Float64(z + x) / y))))); elseif (y <= -4e-276) tmp = Float64(2.0 * sqrt(Float64(x * Float64(y + z)))); else tmp = Float64(2.0 * Float64(sqrt(Float64(x + fma(x, Float64(y / z), y))) * sqrt(z))); end return tmp end
NOTE: x, y, and z should be sorted in increasing order before calling this function. code[x_, y_, z_] := If[LessEqual[y, -1900000000.0], N[(2.0 * N[(y * N[(N[(0.5 * N[(N[(z * x), $MachinePrecision] * N[Sqrt[N[(1.0 / N[(N[(z + x), $MachinePrecision] * N[Power[y, 3.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - N[Sqrt[N[(N[(z + x), $MachinePrecision] / y), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[y, -4e-276], N[(2.0 * N[Sqrt[N[(x * N[(y + z), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision], N[(2.0 * N[(N[Sqrt[N[(x + N[(x * N[(y / z), $MachinePrecision] + y), $MachinePrecision]), $MachinePrecision]], $MachinePrecision] * N[Sqrt[z], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}
[x, y, z] = \mathsf{sort}([x, y, z])\\
\\
\begin{array}{l}
\mathbf{if}\;y \leq -1900000000:\\
\;\;\;\;2 \cdot \left(y \cdot \left(0.5 \cdot \left(\left(z \cdot x\right) \cdot \sqrt{\frac{1}{\left(z + x\right) \cdot {y}^{3}}}\right) - \sqrt{\frac{z + x}{y}}\right)\right)\\
\mathbf{elif}\;y \leq -4 \cdot 10^{-276}:\\
\;\;\;\;2 \cdot \sqrt{x \cdot \left(y + z\right)}\\
\mathbf{else}:\\
\;\;\;\;2 \cdot \left(\sqrt{x + \mathsf{fma}\left(x, \frac{y}{z}, y\right)} \cdot \sqrt{z}\right)\\
\end{array}
\end{array}
if y < -1.9e9Initial program 47.8%
associate-+l+47.8%
+-commutative47.8%
distribute-rgt-in47.9%
Simplified47.9%
Taylor expanded in y around inf 0.7%
+-commutative0.7%
*-commutative0.7%
+-commutative0.7%
Simplified0.7%
Taylor expanded in y around -inf 0.0%
*-commutative0.0%
unpow20.0%
rem-square-sqrt84.6%
Simplified84.6%
if -1.9e9 < y < -4e-276Initial program 86.0%
associate-+l+86.0%
+-commutative86.0%
distribute-rgt-in86.0%
Simplified86.0%
Taylor expanded in x around inf 56.9%
if -4e-276 < y Initial program 76.4%
associate-+l+76.4%
+-commutative76.4%
distribute-rgt-in76.5%
Simplified76.5%
Taylor expanded in z around inf 68.0%
associate-/l*61.8%
Simplified61.8%
*-commutative61.8%
sqrt-prod56.7%
+-commutative56.7%
fma-define56.7%
Applied egg-rr56.7%
Final simplification63.5%
NOTE: x, y, and z should be sorted in increasing order before calling this function. (FPCore (x y z) :precision binary64 (if (<= y -4e-276) (* 2.0 (sqrt (* x (+ y z)))) (* 2.0 (* (sqrt (+ x (fma x (/ y z) y))) (sqrt z)))))
assert(x < y && y < z);
double code(double x, double y, double z) {
double tmp;
if (y <= -4e-276) {
tmp = 2.0 * sqrt((x * (y + z)));
} else {
tmp = 2.0 * (sqrt((x + fma(x, (y / z), y))) * sqrt(z));
}
return tmp;
}
x, y, z = sort([x, y, z]) function code(x, y, z) tmp = 0.0 if (y <= -4e-276) tmp = Float64(2.0 * sqrt(Float64(x * Float64(y + z)))); else tmp = Float64(2.0 * Float64(sqrt(Float64(x + fma(x, Float64(y / z), y))) * sqrt(z))); end return tmp end
NOTE: x, y, and z should be sorted in increasing order before calling this function. code[x_, y_, z_] := If[LessEqual[y, -4e-276], N[(2.0 * N[Sqrt[N[(x * N[(y + z), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision], N[(2.0 * N[(N[Sqrt[N[(x + N[(x * N[(y / z), $MachinePrecision] + y), $MachinePrecision]), $MachinePrecision]], $MachinePrecision] * N[Sqrt[z], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
[x, y, z] = \mathsf{sort}([x, y, z])\\
\\
\begin{array}{l}
\mathbf{if}\;y \leq -4 \cdot 10^{-276}:\\
\;\;\;\;2 \cdot \sqrt{x \cdot \left(y + z\right)}\\
\mathbf{else}:\\
\;\;\;\;2 \cdot \left(\sqrt{x + \mathsf{fma}\left(x, \frac{y}{z}, y\right)} \cdot \sqrt{z}\right)\\
\end{array}
\end{array}
if y < -4e-276Initial program 66.3%
associate-+l+66.3%
+-commutative66.3%
distribute-rgt-in66.3%
Simplified66.3%
Taylor expanded in x around inf 44.2%
if -4e-276 < y Initial program 76.4%
associate-+l+76.4%
+-commutative76.4%
distribute-rgt-in76.5%
Simplified76.5%
Taylor expanded in z around inf 68.0%
associate-/l*61.8%
Simplified61.8%
*-commutative61.8%
sqrt-prod56.7%
+-commutative56.7%
fma-define56.7%
Applied egg-rr56.7%
NOTE: x, y, and z should be sorted in increasing order before calling this function. (FPCore (x y z) :precision binary64 (if (<= y 3.3e-288) (* 2.0 (sqrt (* x (+ y z)))) (* 2.0 (* (sqrt z) (sqrt (+ y x))))))
assert(x < y && y < z);
double code(double x, double y, double z) {
double tmp;
if (y <= 3.3e-288) {
tmp = 2.0 * sqrt((x * (y + z)));
} else {
tmp = 2.0 * (sqrt(z) * sqrt((y + x)));
}
return tmp;
}
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 <= 3.3d-288) then
tmp = 2.0d0 * sqrt((x * (y + z)))
else
tmp = 2.0d0 * (sqrt(z) * sqrt((y + x)))
end if
code = tmp
end function
assert x < y && y < z;
public static double code(double x, double y, double z) {
double tmp;
if (y <= 3.3e-288) {
tmp = 2.0 * Math.sqrt((x * (y + z)));
} else {
tmp = 2.0 * (Math.sqrt(z) * Math.sqrt((y + x)));
}
return tmp;
}
[x, y, z] = sort([x, y, z]) def code(x, y, z): tmp = 0 if y <= 3.3e-288: tmp = 2.0 * math.sqrt((x * (y + z))) else: tmp = 2.0 * (math.sqrt(z) * math.sqrt((y + x))) return tmp
x, y, z = sort([x, y, z]) function code(x, y, z) tmp = 0.0 if (y <= 3.3e-288) tmp = Float64(2.0 * sqrt(Float64(x * Float64(y + z)))); else tmp = Float64(2.0 * Float64(sqrt(z) * sqrt(Float64(y + x)))); end return tmp end
x, y, z = num2cell(sort([x, y, z])){:}
function tmp_2 = code(x, y, z)
tmp = 0.0;
if (y <= 3.3e-288)
tmp = 2.0 * sqrt((x * (y + z)));
else
tmp = 2.0 * (sqrt(z) * sqrt((y + x)));
end
tmp_2 = tmp;
end
NOTE: x, y, and z should be sorted in increasing order before calling this function. code[x_, y_, z_] := If[LessEqual[y, 3.3e-288], N[(2.0 * N[Sqrt[N[(x * N[(y + z), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision], N[(2.0 * N[(N[Sqrt[z], $MachinePrecision] * N[Sqrt[N[(y + x), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
[x, y, z] = \mathsf{sort}([x, y, z])\\
\\
\begin{array}{l}
\mathbf{if}\;y \leq 3.3 \cdot 10^{-288}:\\
\;\;\;\;2 \cdot \sqrt{x \cdot \left(y + z\right)}\\
\mathbf{else}:\\
\;\;\;\;2 \cdot \left(\sqrt{z} \cdot \sqrt{y + x}\right)\\
\end{array}
\end{array}
if y < 3.29999999999999988e-288Initial program 68.6%
associate-+l+68.6%
+-commutative68.6%
distribute-rgt-in68.7%
Simplified68.7%
Taylor expanded in x around inf 47.9%
if 3.29999999999999988e-288 < y Initial program 75.1%
associate-+l+75.1%
+-commutative75.1%
distribute-rgt-in75.2%
Simplified75.2%
Taylor expanded in z around inf 43.3%
+-commutative43.3%
Simplified43.3%
+-commutative43.3%
*-commutative43.3%
sqrt-prod50.9%
+-commutative50.9%
Applied egg-rr50.9%
Final simplification49.3%
NOTE: x, y, and z should be sorted in increasing order before calling this function. (FPCore (x y z) :precision binary64 (if (<= y 1.25e+14) (* 2.0 (sqrt (+ (* y x) (* z (+ y x))))) (* 2.0 (* (sqrt z) (sqrt y)))))
assert(x < y && y < z);
double code(double x, double y, double z) {
double tmp;
if (y <= 1.25e+14) {
tmp = 2.0 * sqrt(((y * x) + (z * (y + x))));
} else {
tmp = 2.0 * (sqrt(z) * sqrt(y));
}
return tmp;
}
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 <= 1.25d+14) then
tmp = 2.0d0 * sqrt(((y * x) + (z * (y + x))))
else
tmp = 2.0d0 * (sqrt(z) * sqrt(y))
end if
code = tmp
end function
assert x < y && y < z;
public static double code(double x, double y, double z) {
double tmp;
if (y <= 1.25e+14) {
tmp = 2.0 * Math.sqrt(((y * x) + (z * (y + x))));
} else {
tmp = 2.0 * (Math.sqrt(z) * Math.sqrt(y));
}
return tmp;
}
[x, y, z] = sort([x, y, z]) def code(x, y, z): tmp = 0 if y <= 1.25e+14: tmp = 2.0 * math.sqrt(((y * x) + (z * (y + x)))) else: tmp = 2.0 * (math.sqrt(z) * math.sqrt(y)) return tmp
x, y, z = sort([x, y, z]) function code(x, y, z) tmp = 0.0 if (y <= 1.25e+14) tmp = Float64(2.0 * sqrt(Float64(Float64(y * x) + Float64(z * Float64(y + x))))); else tmp = Float64(2.0 * Float64(sqrt(z) * sqrt(y))); end return tmp end
x, y, z = num2cell(sort([x, y, z])){:}
function tmp_2 = code(x, y, z)
tmp = 0.0;
if (y <= 1.25e+14)
tmp = 2.0 * sqrt(((y * x) + (z * (y + x))));
else
tmp = 2.0 * (sqrt(z) * sqrt(y));
end
tmp_2 = tmp;
end
NOTE: x, y, and z should be sorted in increasing order before calling this function. code[x_, y_, z_] := If[LessEqual[y, 1.25e+14], N[(2.0 * N[Sqrt[N[(N[(y * x), $MachinePrecision] + N[(z * N[(y + x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision], N[(2.0 * N[(N[Sqrt[z], $MachinePrecision] * N[Sqrt[y], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
[x, y, z] = \mathsf{sort}([x, y, z])\\
\\
\begin{array}{l}
\mathbf{if}\;y \leq 1.25 \cdot 10^{+14}:\\
\;\;\;\;2 \cdot \sqrt{y \cdot x + z \cdot \left(y + x\right)}\\
\mathbf{else}:\\
\;\;\;\;2 \cdot \left(\sqrt{z} \cdot \sqrt{y}\right)\\
\end{array}
\end{array}
if y < 1.25e14Initial program 75.5%
associate-+l+75.5%
+-commutative75.5%
distribute-rgt-in75.6%
Simplified75.6%
if 1.25e14 < y Initial program 59.2%
associate-+l+59.2%
+-commutative59.2%
distribute-rgt-in59.3%
Simplified59.3%
add-sqr-sqrt59.0%
pow259.0%
pow1/259.0%
sqrt-pow159.1%
distribute-rgt-in59.0%
associate-+r+59.0%
*-commutative59.0%
distribute-lft-in59.1%
fma-define59.5%
metadata-eval59.5%
Applied egg-rr59.5%
Taylor expanded in x around 0 27.4%
*-commutative27.4%
Simplified27.4%
sqrt-prod54.7%
Applied egg-rr54.7%
Final simplification70.6%
NOTE: x, y, and z should be sorted in increasing order before calling this function. (FPCore (x y z) :precision binary64 (if (<= y -1e-278) (* 2.0 (sqrt (* x (+ y z)))) (* 2.0 (sqrt (* z (+ y x))))))
assert(x < y && y < z);
double code(double x, double y, double z) {
double tmp;
if (y <= -1e-278) {
tmp = 2.0 * sqrt((x * (y + z)));
} else {
tmp = 2.0 * sqrt((z * (y + x)));
}
return tmp;
}
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 <= (-1d-278)) then
tmp = 2.0d0 * sqrt((x * (y + z)))
else
tmp = 2.0d0 * sqrt((z * (y + x)))
end if
code = tmp
end function
assert x < y && y < z;
public static double code(double x, double y, double z) {
double tmp;
if (y <= -1e-278) {
tmp = 2.0 * Math.sqrt((x * (y + z)));
} else {
tmp = 2.0 * Math.sqrt((z * (y + x)));
}
return tmp;
}
[x, y, z] = sort([x, y, z]) def code(x, y, z): tmp = 0 if y <= -1e-278: tmp = 2.0 * math.sqrt((x * (y + z))) else: tmp = 2.0 * math.sqrt((z * (y + x))) return tmp
x, y, z = sort([x, y, z]) function code(x, y, z) tmp = 0.0 if (y <= -1e-278) 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
x, y, z = num2cell(sort([x, y, z])){:}
function tmp_2 = code(x, y, z)
tmp = 0.0;
if (y <= -1e-278)
tmp = 2.0 * sqrt((x * (y + z)));
else
tmp = 2.0 * sqrt((z * (y + x)));
end
tmp_2 = tmp;
end
NOTE: x, y, and z should be sorted in increasing order before calling this function. code[x_, y_, z_] := If[LessEqual[y, -1e-278], 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]]
\begin{array}{l}
[x, y, z] = \mathsf{sort}([x, y, z])\\
\\
\begin{array}{l}
\mathbf{if}\;y \leq -1 \cdot 10^{-278}:\\
\;\;\;\;2 \cdot \sqrt{x \cdot \left(y + z\right)}\\
\mathbf{else}:\\
\;\;\;\;2 \cdot \sqrt{z \cdot \left(y + x\right)}\\
\end{array}
\end{array}
if y < -9.99999999999999938e-279Initial program 66.3%
associate-+l+66.3%
+-commutative66.3%
distribute-rgt-in66.4%
Simplified66.4%
Taylor expanded in x around inf 43.2%
if -9.99999999999999938e-279 < y Initial program 76.6%
associate-+l+76.6%
+-commutative76.6%
distribute-rgt-in76.6%
Simplified76.6%
Taylor expanded in z around inf 48.2%
+-commutative48.2%
Simplified48.2%
NOTE: x, y, and z should be sorted in increasing order before calling this function. (FPCore (x y z) :precision binary64 (if (<= y 5.4e-281) (* 2.0 (sqrt (* x (+ y z)))) (* 2.0 (sqrt (* y z)))))
assert(x < y && y < z);
double code(double x, double y, double z) {
double tmp;
if (y <= 5.4e-281) {
tmp = 2.0 * sqrt((x * (y + z)));
} else {
tmp = 2.0 * sqrt((y * z));
}
return tmp;
}
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 <= 5.4d-281) then
tmp = 2.0d0 * sqrt((x * (y + z)))
else
tmp = 2.0d0 * sqrt((y * z))
end if
code = tmp
end function
assert x < y && y < z;
public static double code(double x, double y, double z) {
double tmp;
if (y <= 5.4e-281) {
tmp = 2.0 * Math.sqrt((x * (y + z)));
} else {
tmp = 2.0 * Math.sqrt((y * z));
}
return tmp;
}
[x, y, z] = sort([x, y, z]) def code(x, y, z): tmp = 0 if y <= 5.4e-281: tmp = 2.0 * math.sqrt((x * (y + z))) else: tmp = 2.0 * math.sqrt((y * z)) return tmp
x, y, z = sort([x, y, z]) function code(x, y, z) tmp = 0.0 if (y <= 5.4e-281) tmp = Float64(2.0 * sqrt(Float64(x * Float64(y + z)))); else tmp = Float64(2.0 * sqrt(Float64(y * z))); end return tmp end
x, y, z = num2cell(sort([x, y, z])){:}
function tmp_2 = code(x, y, z)
tmp = 0.0;
if (y <= 5.4e-281)
tmp = 2.0 * sqrt((x * (y + z)));
else
tmp = 2.0 * sqrt((y * z));
end
tmp_2 = tmp;
end
NOTE: x, y, and z should be sorted in increasing order before calling this function. code[x_, y_, z_] := If[LessEqual[y, 5.4e-281], 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]]
\begin{array}{l}
[x, y, z] = \mathsf{sort}([x, y, z])\\
\\
\begin{array}{l}
\mathbf{if}\;y \leq 5.4 \cdot 10^{-281}:\\
\;\;\;\;2 \cdot \sqrt{x \cdot \left(y + z\right)}\\
\mathbf{else}:\\
\;\;\;\;2 \cdot \sqrt{y \cdot z}\\
\end{array}
\end{array}
if y < 5.39999999999999979e-281Initial program 68.9%
associate-+l+68.9%
+-commutative68.9%
distribute-rgt-in68.9%
Simplified68.9%
Taylor expanded in x around inf 48.2%
if 5.39999999999999979e-281 < y Initial program 74.9%
associate-+l+74.9%
+-commutative74.9%
distribute-rgt-in75.0%
Simplified75.0%
Taylor expanded in x around 0 21.7%
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) (* z (+ y x))))))
assert(x < y && y < z);
double code(double x, double y, double z) {
return 2.0 * sqrt(((y * x) + (z * (y + x))));
}
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) + (z * (y + x))))
end function
assert x < y && y < z;
public static double code(double x, double y, double z) {
return 2.0 * Math.sqrt(((y * x) + (z * (y + x))));
}
[x, y, z] = sort([x, y, z]) def code(x, y, z): return 2.0 * math.sqrt(((y * x) + (z * (y + x))))
x, y, z = sort([x, y, z]) function code(x, y, z) return Float64(2.0 * sqrt(Float64(Float64(y * x) + Float64(z * Float64(y + x))))) end
x, y, z = num2cell(sort([x, y, z])){:}
function tmp = code(x, y, z)
tmp = 2.0 * sqrt(((y * x) + (z * (y + x))));
end
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[(N[(y * x), $MachinePrecision] + N[(z * N[(y + x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
[x, y, z] = \mathsf{sort}([x, y, z])\\
\\
2 \cdot \sqrt{y \cdot x + z \cdot \left(y + x\right)}
\end{array}
Initial program 71.6%
associate-+l+71.6%
+-commutative71.6%
distribute-rgt-in71.7%
Simplified71.7%
Final simplification71.7%
NOTE: x, y, and z should be sorted in increasing order before calling this function. (FPCore (x y z) :precision binary64 (if (<= y 3.4e-280) (* 2.0 (sqrt (* y x))) (* 2.0 (sqrt (* y z)))))
assert(x < y && y < z);
double code(double x, double y, double z) {
double tmp;
if (y <= 3.4e-280) {
tmp = 2.0 * sqrt((y * x));
} else {
tmp = 2.0 * sqrt((y * z));
}
return tmp;
}
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 <= 3.4d-280) then
tmp = 2.0d0 * sqrt((y * x))
else
tmp = 2.0d0 * sqrt((y * z))
end if
code = tmp
end function
assert x < y && y < z;
public static double code(double x, double y, double z) {
double tmp;
if (y <= 3.4e-280) {
tmp = 2.0 * Math.sqrt((y * x));
} else {
tmp = 2.0 * Math.sqrt((y * z));
}
return tmp;
}
[x, y, z] = sort([x, y, z]) def code(x, y, z): tmp = 0 if y <= 3.4e-280: tmp = 2.0 * math.sqrt((y * x)) else: tmp = 2.0 * math.sqrt((y * z)) return tmp
x, y, z = sort([x, y, z]) function code(x, y, z) tmp = 0.0 if (y <= 3.4e-280) tmp = Float64(2.0 * sqrt(Float64(y * x))); else tmp = Float64(2.0 * sqrt(Float64(y * z))); end return tmp end
x, y, z = num2cell(sort([x, y, z])){:}
function tmp_2 = code(x, y, z)
tmp = 0.0;
if (y <= 3.4e-280)
tmp = 2.0 * sqrt((y * x));
else
tmp = 2.0 * sqrt((y * z));
end
tmp_2 = tmp;
end
NOTE: x, y, and z should be sorted in increasing order before calling this function. code[x_, y_, z_] := If[LessEqual[y, 3.4e-280], N[(2.0 * N[Sqrt[N[(y * x), $MachinePrecision]], $MachinePrecision]), $MachinePrecision], N[(2.0 * N[Sqrt[N[(y * z), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
[x, y, z] = \mathsf{sort}([x, y, z])\\
\\
\begin{array}{l}
\mathbf{if}\;y \leq 3.4 \cdot 10^{-280}:\\
\;\;\;\;2 \cdot \sqrt{y \cdot x}\\
\mathbf{else}:\\
\;\;\;\;2 \cdot \sqrt{y \cdot z}\\
\end{array}
\end{array}
if y < 3.3999999999999998e-280Initial program 68.4%
associate-+l+68.4%
+-commutative68.4%
distribute-rgt-in68.5%
Simplified68.5%
Taylor expanded in z around 0 20.2%
*-commutative20.2%
Simplified20.2%
if 3.3999999999999998e-280 < y Initial program 75.5%
associate-+l+75.5%
+-commutative75.5%
distribute-rgt-in75.5%
Simplified75.5%
Taylor expanded in x around 0 21.8%
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))))
assert(x < y && y < z);
double code(double x, double y, double z) {
return 2.0 * sqrt((y * x));
}
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
assert x < y && y < z;
public static double code(double x, double y, double z) {
return 2.0 * Math.sqrt((y * x));
}
[x, y, z] = sort([x, y, z]) def code(x, y, z): return 2.0 * math.sqrt((y * x))
x, y, z = sort([x, y, z]) function code(x, y, z) return Float64(2.0 * sqrt(Float64(y * x))) end
x, y, z = num2cell(sort([x, y, z])){:}
function tmp = code(x, y, z)
tmp = 2.0 * sqrt((y * x));
end
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]
\begin{array}{l}
[x, y, z] = \mathsf{sort}([x, y, z])\\
\\
2 \cdot \sqrt{y \cdot x}
\end{array}
Initial program 71.6%
associate-+l+71.6%
+-commutative71.6%
distribute-rgt-in71.7%
Simplified71.7%
Taylor expanded in z around 0 26.6%
*-commutative26.6%
Simplified26.6%
(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))))
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;
}
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
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;
}
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
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
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
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]]]
\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}
herbie shell --seed 2024088
(FPCore (x y z)
:name "Diagrams.TwoD.Apollonian:descartes from diagrams-contrib-1.3.0.5"
:precision binary64
:alt
(if (< z 7.636950090573675e+176) (* 2.0 (sqrt (+ (* (+ x y) z) (* x y)))) (* (* (+ (* 0.25 (* (* (pow y -0.75) (* (pow z -0.75) x)) (+ y z))) (* (pow z 0.25) (pow y 0.25))) (+ (* 0.25 (* (* (pow y -0.75) (* (pow z -0.75) x)) (+ y z))) (* (pow z 0.25) (pow y 0.25)))) 2.0))
(* 2.0 (sqrt (+ (+ (* x y) (* x z)) (* y z)))))