Numeric.SpecFunctions:invIncompleteBetaWorker from math-functions-0.1.5.2, D

Percentage Accurate: 100.0% → 100.0%

Time: 10.3s

Alternatives: 7

Speedup: N/A×

Specification

Math

\[\begin{array}{l} \\ x - \frac{2.30753 + x \cdot 0.27061}{1 + \left(0.99229 + x \cdot 0.04481\right) \cdot x} \end{array} \]

FPCore

(FPCore (x)
 :precision binary64
 (- x (/ (+ 2.30753 (* x 0.27061)) (+ 1.0 (* (+ 0.99229 (* x 0.04481)) x)))))

C

double code(double x) {
	return x - ((2.30753 + (x * 0.27061)) / (1.0 + ((0.99229 + (x * 0.04481)) * x)));
}

Fortran

real(8) function code(x)
    real(8), intent (in) :: x
    code = x - ((2.30753d0 + (x * 0.27061d0)) / (1.0d0 + ((0.99229d0 + (x * 0.04481d0)) * x)))
end function

Java

public static double code(double x) {
	return x - ((2.30753 + (x * 0.27061)) / (1.0 + ((0.99229 + (x * 0.04481)) * x)));
}

Python

def code(x):
	return x - ((2.30753 + (x * 0.27061)) / (1.0 + ((0.99229 + (x * 0.04481)) * x)))

Julia

function code(x)
	return Float64(x - Float64(Float64(2.30753 + Float64(x * 0.27061)) / Float64(1.0 + Float64(Float64(0.99229 + Float64(x * 0.04481)) * x))))
end

MATLAB

function tmp = code(x)
	tmp = x - ((2.30753 + (x * 0.27061)) / (1.0 + ((0.99229 + (x * 0.04481)) * x)));
end

Wolfram

code[x_] := N[(x - N[(N[(2.30753 + N[(x * 0.27061), $MachinePrecision]), $MachinePrecision] / N[(1.0 + N[(N[(0.99229 + N[(x * 0.04481), $MachinePrecision]), $MachinePrecision] * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

Initial Program: 100.0% accurate, 1.0× speedup

Math

\[\begin{array}{l} \\ x - \frac{2.30753 + x \cdot 0.27061}{1 + \left(0.99229 + x \cdot 0.04481\right) \cdot x} \end{array} \]

FPCore

(FPCore (x)
 :precision binary64
 (- x (/ (+ 2.30753 (* x 0.27061)) (+ 1.0 (* (+ 0.99229 (* x 0.04481)) x)))))

C

double code(double x) {
	return x - ((2.30753 + (x * 0.27061)) / (1.0 + ((0.99229 + (x * 0.04481)) * x)));
}

Fortran

real(8) function code(x)
    real(8), intent (in) :: x
    code = x - ((2.30753d0 + (x * 0.27061d0)) / (1.0d0 + ((0.99229d0 + (x * 0.04481d0)) * x)))
end function

Java

public static double code(double x) {
	return x - ((2.30753 + (x * 0.27061)) / (1.0 + ((0.99229 + (x * 0.04481)) * x)));
}

Python

def code(x):
	return x - ((2.30753 + (x * 0.27061)) / (1.0 + ((0.99229 + (x * 0.04481)) * x)))

Julia

function code(x)
	return Float64(x - Float64(Float64(2.30753 + Float64(x * 0.27061)) / Float64(1.0 + Float64(Float64(0.99229 + Float64(x * 0.04481)) * x))))
end

MATLAB

function tmp = code(x)
	tmp = x - ((2.30753 + (x * 0.27061)) / (1.0 + ((0.99229 + (x * 0.04481)) * x)));
end

Wolfram

code[x_] := N[(x - N[(N[(2.30753 + N[(x * 0.27061), $MachinePrecision]), $MachinePrecision] / N[(1.0 + N[(N[(0.99229 + N[(x * 0.04481), $MachinePrecision]), $MachinePrecision] * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

Alternative 1: 100.0% accurate, 1.1× speedup

Math

\[\begin{array}{l} \\ \mathsf{fma}\left(\mathsf{fma}\left(x, 0.27061, 2.30753\right), \frac{-1}{\mathsf{fma}\left(x, \mathsf{fma}\left(x, 0.04481, 0.99229\right), 1\right)}, x\right) \end{array} \]

FPCore

(FPCore (x)
 :precision binary64
 (fma (fma x 0.27061 2.30753) (/ -1.0 (fma x (fma x 0.04481 0.99229) 1.0)) x))

C

double code(double x) {
	return fma(fma(x, 0.27061, 2.30753), (-1.0 / fma(x, fma(x, 0.04481, 0.99229), 1.0)), x);
}

Julia

function code(x)
	return fma(fma(x, 0.27061, 2.30753), Float64(-1.0 / fma(x, fma(x, 0.04481, 0.99229), 1.0)), x)
end

Wolfram

code[x_] := N[(N[(x * 0.27061 + 2.30753), $MachinePrecision] * N[(-1.0 / N[(x * N[(x * 0.04481 + 0.99229), $MachinePrecision] + 1.0), $MachinePrecision]), $MachinePrecision] + x), $MachinePrecision]

Derivation

1. Initial program 100.0%

   \[x - \frac{2.30753 + x \cdot 0.27061}{1 + \left(0.99229 + x \cdot 0.04481\right) \cdot x} \]
2. Add Preprocessing
3. Step-by-step derivation

   1. lift--.f64 N/A

      \[\leadsto \color{blue}{x - \frac{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}{1 + \left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x}} \]

   2. sub-neg N/A

      \[\leadsto \color{blue}{x + \left(\mathsf{neg}\left(\frac{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}{1 + \left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x}\right)\right)} \]

   3. +-commutative N/A

      \[\leadsto \color{blue}{\left(\mathsf{neg}\left(\frac{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}{1 + \left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x}\right)\right) + x} \]

   4. lift-/.f64 N/A

      \[\leadsto \left(\mathsf{neg}\left(\color{blue}{\frac{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}{1 + \left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x}}\right)\right) + x \]

   5. distribute-neg-frac2 N/A

      \[\leadsto \color{blue}{\frac{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}{\mathsf{neg}\left(\left(1 + \left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x\right)\right)}} + x \]

   6. div-inv N/A

      \[\leadsto \color{blue}{\left(\frac{230753}{100000} + x \cdot \frac{27061}{100000}\right) \cdot \frac{1}{\mathsf{neg}\left(\left(1 + \left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x\right)\right)}} + x \]

   7. lower-fma.f64 N/A

      \[\leadsto \color{blue}{\mathsf{fma}\left(\frac{230753}{100000} + x \cdot \frac{27061}{100000}, \frac{1}{\mathsf{neg}\left(\left(1 + \left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x\right)\right)}, x\right)} \]

4. Applied rewrites 100.0%

   \[\leadsto \color{blue}{\mathsf{fma}\left(\mathsf{fma}\left(x, 0.27061, 2.30753\right), \frac{-1}{\mathsf{fma}\left(x, \mathsf{fma}\left(x, 0.04481, 0.99229\right), 1\right)}, x\right)} \]
5. Add Preprocessing

Alternative 2: 100.0% accurate, 1.2× speedup

Math

\[\begin{array}{l} \\ x - \frac{\mathsf{fma}\left(x, 0.27061, 2.30753\right)}{\mathsf{fma}\left(x, \mathsf{fma}\left(x, 0.04481, 0.99229\right), 1\right)} \end{array} \]

FPCore

(FPCore (x)
 :precision binary64
 (- x (/ (fma x 0.27061 2.30753) (fma x (fma x 0.04481 0.99229) 1.0))))

C

double code(double x) {
	return x - (fma(x, 0.27061, 2.30753) / fma(x, fma(x, 0.04481, 0.99229), 1.0));
}

Julia

function code(x)
	return Float64(x - Float64(fma(x, 0.27061, 2.30753) / fma(x, fma(x, 0.04481, 0.99229), 1.0)))
end

Wolfram

code[x_] := N[(x - N[(N[(x * 0.27061 + 2.30753), $MachinePrecision] / N[(x * N[(x * 0.04481 + 0.99229), $MachinePrecision] + 1.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

Derivation

1. Initial program 100.0%

   \[x - \frac{2.30753 + x \cdot 0.27061}{1 + \left(0.99229 + x \cdot 0.04481\right) \cdot x} \]
2. Add Preprocessing
3. Step-by-step derivation

   1. lift-+.f64 N/A

      \[\leadsto x - \frac{\color{blue}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}}{1 + \left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x} \]

   2. +-commutative N/A

      \[\leadsto x - \frac{\color{blue}{x \cdot \frac{27061}{100000} + \frac{230753}{100000}}}{1 + \left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x} \]

   3. lift-*.f64 N/A

      \[\leadsto x - \frac{\color{blue}{x \cdot \frac{27061}{100000}} + \frac{230753}{100000}}{1 + \left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x} \]

   4. lower-fma.f64 100.0

      \[\leadsto x - \frac{\color{blue}{\mathsf{fma}\left(x, 0.27061, 2.30753\right)}}{1 + \left(0.99229 + x \cdot 0.04481\right) \cdot x} \]

   5. lift-+.f64 N/A

      \[\leadsto x - \frac{\mathsf{fma}\left(x, \frac{27061}{100000}, \frac{230753}{100000}\right)}{\color{blue}{1 + \left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x}} \]

   6. +-commutative N/A

      \[\leadsto x - \frac{\mathsf{fma}\left(x, \frac{27061}{100000}, \frac{230753}{100000}\right)}{\color{blue}{\left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x + 1}} \]

   7. lift-*.f64 N/A

      \[\leadsto x - \frac{\mathsf{fma}\left(x, \frac{27061}{100000}, \frac{230753}{100000}\right)}{\color{blue}{\left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x} + 1} \]

   8. *-commutative N/A

      \[\leadsto x - \frac{\mathsf{fma}\left(x, \frac{27061}{100000}, \frac{230753}{100000}\right)}{\color{blue}{x \cdot \left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right)} + 1} \]

   9. lower-fma.f64 100.0

      \[\leadsto x - \frac{\mathsf{fma}\left(x, 0.27061, 2.30753\right)}{\color{blue}{\mathsf{fma}\left(x, 0.99229 + x \cdot 0.04481, 1\right)}} \]

   10. lift-+.f64 N/A

       \[\leadsto x - \frac{\mathsf{fma}\left(x, \frac{27061}{100000}, \frac{230753}{100000}\right)}{\mathsf{fma}\left(x, \color{blue}{\frac{99229}{100000} + x \cdot \frac{4481}{100000}}, 1\right)} \]

   11. +-commutative N/A

       \[\leadsto x - \frac{\mathsf{fma}\left(x, \frac{27061}{100000}, \frac{230753}{100000}\right)}{\mathsf{fma}\left(x, \color{blue}{x \cdot \frac{4481}{100000} + \frac{99229}{100000}}, 1\right)} \]

   12. lift-*.f64 N/A

       \[\leadsto x - \frac{\mathsf{fma}\left(x, \frac{27061}{100000}, \frac{230753}{100000}\right)}{\mathsf{fma}\left(x, \color{blue}{x \cdot \frac{4481}{100000}} + \frac{99229}{100000}, 1\right)} \]

   13. lower-fma.f64 100.0

       \[\leadsto x - \frac{\mathsf{fma}\left(x, 0.27061, 2.30753\right)}{\mathsf{fma}\left(x, \color{blue}{\mathsf{fma}\left(x, 0.04481, 0.99229\right)}, 1\right)} \]

4. Applied rewrites 100.0%

   \[\leadsto \color{blue}{x - \frac{\mathsf{fma}\left(x, 0.27061, 2.30753\right)}{\mathsf{fma}\left(x, \mathsf{fma}\left(x, 0.04481, 0.99229\right), 1\right)}} \]
5. Add Preprocessing

Alternative 3: 99.2% accurate, 1.3× speedup

Math

\[\begin{array}{l} \\ x + \frac{-1}{x \cdot \mathsf{fma}\left(x, -0.025050834237766436, 0.37920088514346545\right) + 0.4333638132548656} \end{array} \]

FPCore

(FPCore (x)
 :precision binary64
 (+
  x
  (/
   -1.0
   (+
    (* x (fma x -0.025050834237766436 0.37920088514346545))
    0.4333638132548656))))

C

double code(double x) {
	return x + (-1.0 / ((x * fma(x, -0.025050834237766436, 0.37920088514346545)) + 0.4333638132548656));
}

Julia

function code(x)
	return Float64(x + Float64(-1.0 / Float64(Float64(x * fma(x, -0.025050834237766436, 0.37920088514346545)) + 0.4333638132548656)))
end

Wolfram

code[x_] := N[(x + N[(-1.0 / N[(N[(x * N[(x * -0.025050834237766436 + 0.37920088514346545), $MachinePrecision]), $MachinePrecision] + 0.4333638132548656), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

Derivation

1. Initial program 100.0%

   \[x - \frac{2.30753 + x \cdot 0.27061}{1 + \left(0.99229 + x \cdot 0.04481\right) \cdot x} \]
2. Add Preprocessing
3. Step-by-step derivation

   1. lift-/.f64 N/A

      \[\leadsto x - \color{blue}{\frac{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}{1 + \left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x}} \]

   2. clear-num N/A

      \[\leadsto x - \color{blue}{\frac{1}{\frac{1 + \left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}}} \]

   3. lower-/.f64 N/A

      \[\leadsto x - \color{blue}{\frac{1}{\frac{1 + \left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}}} \]

   4. lower-/.f64 100.0

      \[\leadsto x - \frac{1}{\color{blue}{\frac{1 + \left(0.99229 + x \cdot 0.04481\right) \cdot x}{2.30753 + x \cdot 0.27061}}} \]

   5. lift-+.f64 N/A

      \[\leadsto x - \frac{1}{\frac{\color{blue}{1 + \left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x}}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}} \]

   6. +-commutative N/A

      \[\leadsto x - \frac{1}{\frac{\color{blue}{\left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x + 1}}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}} \]

   7. lift-*.f64 N/A

      \[\leadsto x - \frac{1}{\frac{\color{blue}{\left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x} + 1}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}} \]

   8. *-commutative N/A

      \[\leadsto x - \frac{1}{\frac{\color{blue}{x \cdot \left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right)} + 1}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}} \]

   9. lower-fma.f64 100.0

      \[\leadsto x - \frac{1}{\frac{\color{blue}{\mathsf{fma}\left(x, 0.99229 + x \cdot 0.04481, 1\right)}}{2.30753 + x \cdot 0.27061}} \]

   10. lift-+.f64 N/A

       \[\leadsto x - \frac{1}{\frac{\mathsf{fma}\left(x, \color{blue}{\frac{99229}{100000} + x \cdot \frac{4481}{100000}}, 1\right)}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}} \]

   11. +-commutative N/A

       \[\leadsto x - \frac{1}{\frac{\mathsf{fma}\left(x, \color{blue}{x \cdot \frac{4481}{100000} + \frac{99229}{100000}}, 1\right)}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}} \]

   12. lift-*.f64 N/A

       \[\leadsto x - \frac{1}{\frac{\mathsf{fma}\left(x, \color{blue}{x \cdot \frac{4481}{100000}} + \frac{99229}{100000}, 1\right)}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}} \]

   13. lower-fma.f64 100.0

       \[\leadsto x - \frac{1}{\frac{\mathsf{fma}\left(x, \color{blue}{\mathsf{fma}\left(x, 0.04481, 0.99229\right)}, 1\right)}{2.30753 + x \cdot 0.27061}} \]

   14. lift-+.f64 N/A

       \[\leadsto x - \frac{1}{\frac{\mathsf{fma}\left(x, \mathsf{fma}\left(x, \frac{4481}{100000}, \frac{99229}{100000}\right), 1\right)}{\color{blue}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}}} \]

   15. +-commutative N/A

       \[\leadsto x - \frac{1}{\frac{\mathsf{fma}\left(x, \mathsf{fma}\left(x, \frac{4481}{100000}, \frac{99229}{100000}\right), 1\right)}{\color{blue}{x \cdot \frac{27061}{100000} + \frac{230753}{100000}}}} \]

   16. lift-*.f64 N/A

       \[\leadsto x - \frac{1}{\frac{\mathsf{fma}\left(x, \mathsf{fma}\left(x, \frac{4481}{100000}, \frac{99229}{100000}\right), 1\right)}{\color{blue}{x \cdot \frac{27061}{100000}} + \frac{230753}{100000}}} \]

   17. lower-fma.f64 100.0

       \[\leadsto x - \frac{1}{\frac{\mathsf{fma}\left(x, \mathsf{fma}\left(x, 0.04481, 0.99229\right), 1\right)}{\color{blue}{\mathsf{fma}\left(x, 0.27061, 2.30753\right)}}} \]

4. Applied rewrites 100.0%

   \[\leadsto x - \color{blue}{\frac{1}{\frac{\mathsf{fma}\left(x, \mathsf{fma}\left(x, 0.04481, 0.99229\right), 1\right)}{\mathsf{fma}\left(x, 0.27061, 2.30753\right)}}} \]

5. Taylor expanded in x around 0

   \[\leadsto x - \frac{1}{\color{blue}{\frac{100000}{230753} + x \cdot \left(\frac{20191289437}{53246947009} + \frac{-307796913907328}{12286892763167777} \cdot x\right)}} \]
6. Step-by-step derivation

   1. +-commutative N/A

      \[\leadsto x - \frac{1}{\color{blue}{x \cdot \left(\frac{20191289437}{53246947009} + \frac{-307796913907328}{12286892763167777} \cdot x\right) + \frac{100000}{230753}}} \]

   2. lower-fma.f64 N/A

      \[\leadsto x - \frac{1}{\color{blue}{\mathsf{fma}\left(x, \frac{20191289437}{53246947009} + \frac{-307796913907328}{12286892763167777} \cdot x, \frac{100000}{230753}\right)}} \]

   3. +-commutative N/A

      \[\leadsto x - \frac{1}{\mathsf{fma}\left(x, \color{blue}{\frac{-307796913907328}{12286892763167777} \cdot x + \frac{20191289437}{53246947009}}, \frac{100000}{230753}\right)} \]

   4. *-commutative N/A

      \[\leadsto x - \frac{1}{\mathsf{fma}\left(x, \color{blue}{x \cdot \frac{-307796913907328}{12286892763167777}} + \frac{20191289437}{53246947009}, \frac{100000}{230753}\right)} \]

   5. lower-fma.f64 99.3

      \[\leadsto x - \frac{1}{\mathsf{fma}\left(x, \color{blue}{\mathsf{fma}\left(x, -0.025050834237766436, 0.37920088514346545\right)}, 0.4333638132548656\right)} \]

7. Applied rewrites 99.3%

   \[\leadsto x - \frac{1}{\color{blue}{\mathsf{fma}\left(x, \mathsf{fma}\left(x, -0.025050834237766436, 0.37920088514346545\right), 0.4333638132548656\right)}} \]
8. Step-by-step derivation

9. Applied rewrites 99.3%

   \[\leadsto x - \frac{1}{x \cdot \mathsf{fma}\left(x, -0.025050834237766436, 0.37920088514346545\right) + \color{blue}{0.4333638132548656}} \]

10. Final simplification 99.3%

    \[\leadsto x + \frac{-1}{x \cdot \mathsf{fma}\left(x, -0.025050834237766436, 0.37920088514346545\right) + 0.4333638132548656} \]
11. Add Preprocessing

Alternative 4: 99.2% accurate, 1.4× speedup

Math

\[\begin{array}{l} \\ x + \frac{-1}{\mathsf{fma}\left(x, \mathsf{fma}\left(x, -0.025050834237766436, 0.37920088514346545\right), 0.4333638132548656\right)} \end{array} \]

FPCore

(FPCore (x)
 :precision binary64
 (+
  x
  (/
   -1.0
   (fma
    x
    (fma x -0.025050834237766436 0.37920088514346545)
    0.4333638132548656))))

C

double code(double x) {
	return x + (-1.0 / fma(x, fma(x, -0.025050834237766436, 0.37920088514346545), 0.4333638132548656));
}

Julia

function code(x)
	return Float64(x + Float64(-1.0 / fma(x, fma(x, -0.025050834237766436, 0.37920088514346545), 0.4333638132548656)))
end

Wolfram

code[x_] := N[(x + N[(-1.0 / N[(x * N[(x * -0.025050834237766436 + 0.37920088514346545), $MachinePrecision] + 0.4333638132548656), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

Derivation

1. Initial program 100.0%

   \[x - \frac{2.30753 + x \cdot 0.27061}{1 + \left(0.99229 + x \cdot 0.04481\right) \cdot x} \]
2. Add Preprocessing
3. Step-by-step derivation

   1. lift-/.f64 N/A

      \[\leadsto x - \color{blue}{\frac{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}{1 + \left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x}} \]

   2. clear-num N/A

      \[\leadsto x - \color{blue}{\frac{1}{\frac{1 + \left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}}} \]

   3. lower-/.f64 N/A

      \[\leadsto x - \color{blue}{\frac{1}{\frac{1 + \left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}}} \]

   4. lower-/.f64 100.0

      \[\leadsto x - \frac{1}{\color{blue}{\frac{1 + \left(0.99229 + x \cdot 0.04481\right) \cdot x}{2.30753 + x \cdot 0.27061}}} \]

   5. lift-+.f64 N/A

      \[\leadsto x - \frac{1}{\frac{\color{blue}{1 + \left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x}}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}} \]

   6. +-commutative N/A

      \[\leadsto x - \frac{1}{\frac{\color{blue}{\left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x + 1}}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}} \]

   7. lift-*.f64 N/A

      \[\leadsto x - \frac{1}{\frac{\color{blue}{\left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x} + 1}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}} \]

   8. *-commutative N/A

      \[\leadsto x - \frac{1}{\frac{\color{blue}{x \cdot \left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right)} + 1}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}} \]

   9. lower-fma.f64 100.0

      \[\leadsto x - \frac{1}{\frac{\color{blue}{\mathsf{fma}\left(x, 0.99229 + x \cdot 0.04481, 1\right)}}{2.30753 + x \cdot 0.27061}} \]

   10. lift-+.f64 N/A

       \[\leadsto x - \frac{1}{\frac{\mathsf{fma}\left(x, \color{blue}{\frac{99229}{100000} + x \cdot \frac{4481}{100000}}, 1\right)}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}} \]

   11. +-commutative N/A

       \[\leadsto x - \frac{1}{\frac{\mathsf{fma}\left(x, \color{blue}{x \cdot \frac{4481}{100000} + \frac{99229}{100000}}, 1\right)}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}} \]

   12. lift-*.f64 N/A

       \[\leadsto x - \frac{1}{\frac{\mathsf{fma}\left(x, \color{blue}{x \cdot \frac{4481}{100000}} + \frac{99229}{100000}, 1\right)}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}} \]

   13. lower-fma.f64 100.0

       \[\leadsto x - \frac{1}{\frac{\mathsf{fma}\left(x, \color{blue}{\mathsf{fma}\left(x, 0.04481, 0.99229\right)}, 1\right)}{2.30753 + x \cdot 0.27061}} \]

   14. lift-+.f64 N/A

       \[\leadsto x - \frac{1}{\frac{\mathsf{fma}\left(x, \mathsf{fma}\left(x, \frac{4481}{100000}, \frac{99229}{100000}\right), 1\right)}{\color{blue}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}}} \]

   15. +-commutative N/A

       \[\leadsto x - \frac{1}{\frac{\mathsf{fma}\left(x, \mathsf{fma}\left(x, \frac{4481}{100000}, \frac{99229}{100000}\right), 1\right)}{\color{blue}{x \cdot \frac{27061}{100000} + \frac{230753}{100000}}}} \]

   16. lift-*.f64 N/A

       \[\leadsto x - \frac{1}{\frac{\mathsf{fma}\left(x, \mathsf{fma}\left(x, \frac{4481}{100000}, \frac{99229}{100000}\right), 1\right)}{\color{blue}{x \cdot \frac{27061}{100000}} + \frac{230753}{100000}}} \]

   17. lower-fma.f64 100.0

       \[\leadsto x - \frac{1}{\frac{\mathsf{fma}\left(x, \mathsf{fma}\left(x, 0.04481, 0.99229\right), 1\right)}{\color{blue}{\mathsf{fma}\left(x, 0.27061, 2.30753\right)}}} \]

4. Applied rewrites 100.0%

   \[\leadsto x - \color{blue}{\frac{1}{\frac{\mathsf{fma}\left(x, \mathsf{fma}\left(x, 0.04481, 0.99229\right), 1\right)}{\mathsf{fma}\left(x, 0.27061, 2.30753\right)}}} \]

5. Taylor expanded in x around 0

   \[\leadsto x - \frac{1}{\color{blue}{\frac{100000}{230753} + x \cdot \left(\frac{20191289437}{53246947009} + \frac{-307796913907328}{12286892763167777} \cdot x\right)}} \]
6. Step-by-step derivation

   1. +-commutative N/A

      \[\leadsto x - \frac{1}{\color{blue}{x \cdot \left(\frac{20191289437}{53246947009} + \frac{-307796913907328}{12286892763167777} \cdot x\right) + \frac{100000}{230753}}} \]

   2. lower-fma.f64 N/A

      \[\leadsto x - \frac{1}{\color{blue}{\mathsf{fma}\left(x, \frac{20191289437}{53246947009} + \frac{-307796913907328}{12286892763167777} \cdot x, \frac{100000}{230753}\right)}} \]

   3. +-commutative N/A

      \[\leadsto x - \frac{1}{\mathsf{fma}\left(x, \color{blue}{\frac{-307796913907328}{12286892763167777} \cdot x + \frac{20191289437}{53246947009}}, \frac{100000}{230753}\right)} \]

   4. *-commutative N/A

      \[\leadsto x - \frac{1}{\mathsf{fma}\left(x, \color{blue}{x \cdot \frac{-307796913907328}{12286892763167777}} + \frac{20191289437}{53246947009}, \frac{100000}{230753}\right)} \]

   5. lower-fma.f64 99.3

      \[\leadsto x - \frac{1}{\mathsf{fma}\left(x, \color{blue}{\mathsf{fma}\left(x, -0.025050834237766436, 0.37920088514346545\right)}, 0.4333638132548656\right)} \]

7. Applied rewrites 99.3%

   \[\leadsto x - \frac{1}{\color{blue}{\mathsf{fma}\left(x, \mathsf{fma}\left(x, -0.025050834237766436, 0.37920088514346545\right), 0.4333638132548656\right)}} \]

8. Final simplification 99.3%

   \[\leadsto x + \frac{-1}{\mathsf{fma}\left(x, \mathsf{fma}\left(x, -0.025050834237766436, 0.37920088514346545\right), 0.4333638132548656\right)} \]
9. Add Preprocessing

Alternative 5: 99.0% accurate, 1.9× speedup

Math

\[\begin{array}{l} \\ x + \frac{-1}{\mathsf{fma}\left(x, 0.37920088514346545, 0.4333638132548656\right)} \end{array} \]

FPCore

(FPCore (x)
 :precision binary64
 (+ x (/ -1.0 (fma x 0.37920088514346545 0.4333638132548656))))

C

double code(double x) {
	return x + (-1.0 / fma(x, 0.37920088514346545, 0.4333638132548656));
}

Julia

function code(x)
	return Float64(x + Float64(-1.0 / fma(x, 0.37920088514346545, 0.4333638132548656)))
end

Wolfram

code[x_] := N[(x + N[(-1.0 / N[(x * 0.37920088514346545 + 0.4333638132548656), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]

Derivation

1. Initial program 100.0%

   \[x - \frac{2.30753 + x \cdot 0.27061}{1 + \left(0.99229 + x \cdot 0.04481\right) \cdot x} \]
2. Add Preprocessing
3. Step-by-step derivation

   1. lift-/.f64 N/A

      \[\leadsto x - \color{blue}{\frac{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}{1 + \left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x}} \]

   2. clear-num N/A

      \[\leadsto x - \color{blue}{\frac{1}{\frac{1 + \left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}}} \]

   3. lower-/.f64 N/A

      \[\leadsto x - \color{blue}{\frac{1}{\frac{1 + \left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}}} \]

   4. lower-/.f64 100.0

      \[\leadsto x - \frac{1}{\color{blue}{\frac{1 + \left(0.99229 + x \cdot 0.04481\right) \cdot x}{2.30753 + x \cdot 0.27061}}} \]

   5. lift-+.f64 N/A

      \[\leadsto x - \frac{1}{\frac{\color{blue}{1 + \left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x}}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}} \]

   6. +-commutative N/A

      \[\leadsto x - \frac{1}{\frac{\color{blue}{\left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x + 1}}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}} \]

   7. lift-*.f64 N/A

      \[\leadsto x - \frac{1}{\frac{\color{blue}{\left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right) \cdot x} + 1}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}} \]

   8. *-commutative N/A

      \[\leadsto x - \frac{1}{\frac{\color{blue}{x \cdot \left(\frac{99229}{100000} + x \cdot \frac{4481}{100000}\right)} + 1}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}} \]

   9. lower-fma.f64 100.0

      \[\leadsto x - \frac{1}{\frac{\color{blue}{\mathsf{fma}\left(x, 0.99229 + x \cdot 0.04481, 1\right)}}{2.30753 + x \cdot 0.27061}} \]

   10. lift-+.f64 N/A

       \[\leadsto x - \frac{1}{\frac{\mathsf{fma}\left(x, \color{blue}{\frac{99229}{100000} + x \cdot \frac{4481}{100000}}, 1\right)}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}} \]

   11. +-commutative N/A

       \[\leadsto x - \frac{1}{\frac{\mathsf{fma}\left(x, \color{blue}{x \cdot \frac{4481}{100000} + \frac{99229}{100000}}, 1\right)}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}} \]

   12. lift-*.f64 N/A

       \[\leadsto x - \frac{1}{\frac{\mathsf{fma}\left(x, \color{blue}{x \cdot \frac{4481}{100000}} + \frac{99229}{100000}, 1\right)}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}} \]

   13. lower-fma.f64 100.0

       \[\leadsto x - \frac{1}{\frac{\mathsf{fma}\left(x, \color{blue}{\mathsf{fma}\left(x, 0.04481, 0.99229\right)}, 1\right)}{2.30753 + x \cdot 0.27061}} \]

   14. lift-+.f64 N/A

       \[\leadsto x - \frac{1}{\frac{\mathsf{fma}\left(x, \mathsf{fma}\left(x, \frac{4481}{100000}, \frac{99229}{100000}\right), 1\right)}{\color{blue}{\frac{230753}{100000} + x \cdot \frac{27061}{100000}}}} \]

   15. +-commutative N/A

       \[\leadsto x - \frac{1}{\frac{\mathsf{fma}\left(x, \mathsf{fma}\left(x, \frac{4481}{100000}, \frac{99229}{100000}\right), 1\right)}{\color{blue}{x \cdot \frac{27061}{100000} + \frac{230753}{100000}}}} \]

   16. lift-*.f64 N/A

       \[\leadsto x - \frac{1}{\frac{\mathsf{fma}\left(x, \mathsf{fma}\left(x, \frac{4481}{100000}, \frac{99229}{100000}\right), 1\right)}{\color{blue}{x \cdot \frac{27061}{100000}} + \frac{230753}{100000}}} \]

   17. lower-fma.f64 100.0

       \[\leadsto x - \frac{1}{\frac{\mathsf{fma}\left(x, \mathsf{fma}\left(x, 0.04481, 0.99229\right), 1\right)}{\color{blue}{\mathsf{fma}\left(x, 0.27061, 2.30753\right)}}} \]

4. Applied rewrites 100.0%

   \[\leadsto x - \color{blue}{\frac{1}{\frac{\mathsf{fma}\left(x, \mathsf{fma}\left(x, 0.04481, 0.99229\right), 1\right)}{\mathsf{fma}\left(x, 0.27061, 2.30753\right)}}} \]

5. Taylor expanded in x around 0

   \[\leadsto x - \frac{1}{\color{blue}{\frac{100000}{230753} + \frac{20191289437}{53246947009} \cdot x}} \]
6. Step-by-step derivation

   1. +-commutative N/A

      \[\leadsto x - \frac{1}{\color{blue}{\frac{20191289437}{53246947009} \cdot x + \frac{100000}{230753}}} \]

   2. *-commutative N/A

      \[\leadsto x - \frac{1}{\color{blue}{x \cdot \frac{20191289437}{53246947009}} + \frac{100000}{230753}} \]

   3. lower-fma.f64 99.1

      \[\leadsto x - \frac{1}{\color{blue}{\mathsf{fma}\left(x, 0.37920088514346545, 0.4333638132548656\right)}} \]

7. Applied rewrites 99.1%

   \[\leadsto x - \frac{1}{\color{blue}{\mathsf{fma}\left(x, 0.37920088514346545, 0.4333638132548656\right)}} \]

8. Final simplification 99.1%

   \[\leadsto x + \frac{-1}{\mathsf{fma}\left(x, 0.37920088514346545, 0.4333638132548656\right)} \]
9. Add Preprocessing

Alternative 6: 97.9% accurate, 9.8× speedup

Math

\[\begin{array}{l} \\ x - 2.30753 \end{array} \]

FPCore

(FPCore (x) :precision binary64 (- x 2.30753))

C

double code(double x) {
	return x - 2.30753;
}

Fortran

real(8) function code(x)
    real(8), intent (in) :: x
    code = x - 2.30753d0
end function

Java

public static double code(double x) {
	return x - 2.30753;
}

Python

def code(x):
	return x - 2.30753

Julia

function code(x)
	return Float64(x - 2.30753)
end

MATLAB

function tmp = code(x)
	tmp = x - 2.30753;
end

Wolfram

code[x_] := N[(x - 2.30753), $MachinePrecision]

Derivation

1. Initial program 100.0%

   \[x - \frac{2.30753 + x \cdot 0.27061}{1 + \left(0.99229 + x \cdot 0.04481\right) \cdot x} \]
2. Add Preprocessing

3. Taylor expanded in x around 0

   \[\leadsto x - \color{blue}{\frac{230753}{100000}} \]
4. Step-by-step derivation

5. Applied rewrites 97.7%

   \[\leadsto x - \color{blue}{2.30753} \]
6. Add Preprocessing

Alternative 7: 51.2% accurate, 39.0× speedup

Math

\[\begin{array}{l} \\ -2.30753 \end{array} \]

FPCore

(FPCore (x) :precision binary64 -2.30753)

C

double code(double x) {
	return -2.30753;
}

Fortran

real(8) function code(x)
    real(8), intent (in) :: x
    code = -2.30753d0
end function

Java

public static double code(double x) {
	return -2.30753;
}

Python

def code(x):
	return -2.30753

Julia

function code(x)
	return -2.30753
end

MATLAB

function tmp = code(x)
	tmp = -2.30753;
end

Wolfram

code[x_] := -2.30753

Derivation

1. Initial program 100.0%

   \[x - \frac{2.30753 + x \cdot 0.27061}{1 + \left(0.99229 + x \cdot 0.04481\right) \cdot x} \]
2. Add Preprocessing

3. Taylor expanded in x around 0

   \[\leadsto \color{blue}{\frac{-230753}{100000}} \]
4. Step-by-step derivation

5. Applied rewrites 49.0%

   \[\leadsto \color{blue}{-2.30753} \]
6. Add Preprocessing

Reproduce

herbie shell --seed 2024220 
(FPCore (x)
  :name "Numeric.SpecFunctions:invIncompleteBetaWorker from math-functions-0.1.5.2, D"
  :precision binary64
  (- x (/ (+ 2.30753 (* x 0.27061)) (+ 1.0 (* (+ 0.99229 (* x 0.04481)) x)))))