FRP.Yampa.Vector3:vector3Rho from Yampa-0.10.2

Average Error: 37.9 → 0.0

Time: 2.2s

Precision: binary64

Cost: 12992

Math

\[\sqrt{\left(x \cdot x + y \cdot y\right) + z \cdot z} \]

↓

\[\mathsf{hypot}\left(\mathsf{hypot}\left(x, y\right), z\right) \]

FPCore

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

↓

(FPCore (x y z) :precision binary64 (hypot (hypot x y) z))

C

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

↓

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

Java

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

↓

public static double code(double x, double y, double z) {
	return Math.hypot(Math.hypot(x, y), z);
}

Python

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

↓

def code(x, y, z):
	return math.hypot(math.hypot(x, y), z)

Julia

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

↓

function code(x, y, z)
	return hypot(hypot(x, y), z)
end

MATLAB

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

↓

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

Wolfram

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

↓

code[x_, y_, z_] := N[Sqrt[N[Sqrt[x ^ 2 + y ^ 2], $MachinePrecision] ^ 2 + z ^ 2], $MachinePrecision]

Target

Original	37.9
Target	25.4
Herbie	0.0

\[\begin{array}{l} \mathbf{if}\;z < -6.396479394109776 \cdot 10^{+136}:\\ \;\;\;\;-z\\ \mathbf{elif}\;z < 7.320293694404182 \cdot 10^{+117}:\\ \;\;\;\;\sqrt{\left(z \cdot z + x \cdot x\right) + y \cdot y}\\ \mathbf{else}:\\ \;\;\;\;z\\ \end{array} \]

Derivation

1. Initial program 37.9

   \[\sqrt{\left(x \cdot x + y \cdot y\right) + z \cdot z} \]

2. Applied egg-rr 0.0

   \[\leadsto \color{blue}{\mathsf{hypot}\left(\mathsf{hypot}\left(x, y\right), z\right)} \]

3. Final simplification 0.0

   \[\leadsto \mathsf{hypot}\left(\mathsf{hypot}\left(x, y\right), z\right) \]

Alternatives

Alternative 1
Error	41.2
Cost	7368

\[\begin{array}{l} \mathbf{if}\;x \leq -3.25 \cdot 10^{+131}:\\ \;\;\;\;-x\\ \mathbf{elif}\;x \leq -1.3 \cdot 10^{-130}:\\ \;\;\;\;\sqrt{\left(x \cdot x + y \cdot y\right) + z \cdot z}\\ \mathbf{else}:\\ \;\;\;\;z\\ \end{array} \]

Alternative 2
Error	44.8
Cost	260

\[\begin{array}{l} \mathbf{if}\;x \leq -17000000000000:\\ \;\;\;\;-x\\ \mathbf{else}:\\ \;\;\;\;z\\ \end{array} \]

Alternative 3
Error	52.1
Cost	64

\[z \]

Reproduce

herbie shell --seed 2022356 
(FPCore (x y z)
  :name "FRP.Yampa.Vector3:vector3Rho from Yampa-0.10.2"
  :precision binary64

  :herbie-target
  (if (< z -6.396479394109776e+136) (- z) (if (< z 7.320293694404182e+117) (sqrt (+ (+ (* z z) (* x x)) (* y y))) z))

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