Diagrams.ThreeD.Transform:aboutY from diagrams-lib-1.3.0.3

Average Error: 0.1 → 0.1

Time: 8.8s

Precision: binary64

Cost: 19520

Math

\[x \cdot \cos y + z \cdot \sin y \]

↓

\[\mathsf{fma}\left(\sin y, z, x \cdot \cos y\right) \]

FPCore

(FPCore (x y z) :precision binary64 (+ (* x (cos y)) (* z (sin y))))

↓

(FPCore (x y z) :precision binary64 (fma (sin y) z (* x (cos y))))

C

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

↓

double code(double x, double y, double z) {
	return fma(sin(y), z, (x * cos(y)));
}

Julia

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

↓

function code(x, y, z)
	return fma(sin(y), z, Float64(x * cos(y)))
end

Wolfram

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

↓

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

Derivation

1. Initial program 0.1

   \[x \cdot \cos y + z \cdot \sin y \]

2. Applied egg-rr 0.1

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

3. Final simplification 0.1

   \[\leadsto \mathsf{fma}\left(\sin y, z, x \cdot \cos y\right) \]

Alternatives

Alternative 1
Error	0.1
Cost	13248

\[\sin y \cdot z + x \cdot \cos y \]

Alternative 2
Error	16.8
Cost	7120

\[\begin{array}{l} t_0 := x \cdot \cos y\\ t_1 := \sin y \cdot z\\ \mathbf{if}\;x \leq -1.0671675090155537 \cdot 10^{-74}:\\ \;\;\;\;t_0\\ \mathbf{elif}\;x \leq 2.8268026029328564 \cdot 10^{-188}:\\ \;\;\;\;t_1\\ \mathbf{elif}\;x \leq 4.885534198897788 \cdot 10^{-177}:\\ \;\;\;\;t_0\\ \mathbf{elif}\;x \leq 0.0945866483674307:\\ \;\;\;\;t_1\\ \mathbf{else}:\\ \;\;\;\;t_0\\ \end{array} \]

Alternative 3
Error	8.7
Cost	6984

\[\begin{array}{l} t_0 := x \cdot \cos y\\ \mathbf{if}\;x \leq -5.77061478139967 \cdot 10^{+18}:\\ \;\;\;\;t_0\\ \mathbf{elif}\;x \leq 4.817244721917213 \cdot 10^{+60}:\\ \;\;\;\;x + \sin y \cdot z\\ \mathbf{else}:\\ \;\;\;\;t_0\\ \end{array} \]

Alternative 4
Error	16.9
Cost	6856

\[\begin{array}{l} t_0 := \sin y \cdot z\\ \mathbf{if}\;y \leq -8953734.187521322:\\ \;\;\;\;t_0\\ \mathbf{elif}\;y \leq 3.1115023590231776 \cdot 10^{+20}:\\ \;\;\;\;x + y \cdot z\\ \mathbf{else}:\\ \;\;\;\;t_0\\ \end{array} \]

Alternative 5
Error	38.4
Cost	720

\[\begin{array}{l} \mathbf{if}\;x \leq -1.2736310184995873 \cdot 10^{-169}:\\ \;\;\;\;x\\ \mathbf{elif}\;x \leq -5.007372374707489 \cdot 10^{-242}:\\ \;\;\;\;y \cdot z\\ \mathbf{elif}\;x \leq -4.5486852416693705 \cdot 10^{-280}:\\ \;\;\;\;x\\ \mathbf{elif}\;x \leq 0.0945866483674307:\\ \;\;\;\;y \cdot z\\ \mathbf{else}:\\ \;\;\;\;x\\ \end{array} \]

Alternative 6
Error	30.7
Cost	320

\[x + y \cdot z \]

Alternative 7
Error	38.9
Cost	64

\[x \]

Reproduce

herbie shell --seed 2022217 
(FPCore (x y z)
  :name "Diagrams.ThreeD.Transform:aboutY from diagrams-lib-1.3.0.3"
  :precision binary64
  (+ (* x (cos y)) (* z (sin y))))