Falkner and Boettcher, Equation (20:1,3)

Percentage Accurate: 99.3% → 99.5%
Time: 9.2s
Alternatives: 8
Speedup: 1.2×

Specification

?
\[\begin{array}{l} \\ \frac{1 - 5 \cdot \left(v \cdot v\right)}{\left(\left(\pi \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)} \end{array} \]
(FPCore (v t)
 :precision binary64
 (/
  (- 1.0 (* 5.0 (* v v)))
  (* (* (* PI t) (sqrt (* 2.0 (- 1.0 (* 3.0 (* v v)))))) (- 1.0 (* v v)))))
double code(double v, double t) {
	return (1.0 - (5.0 * (v * v))) / (((((double) M_PI) * t) * sqrt((2.0 * (1.0 - (3.0 * (v * v)))))) * (1.0 - (v * v)));
}
public static double code(double v, double t) {
	return (1.0 - (5.0 * (v * v))) / (((Math.PI * t) * Math.sqrt((2.0 * (1.0 - (3.0 * (v * v)))))) * (1.0 - (v * v)));
}
def code(v, t):
	return (1.0 - (5.0 * (v * v))) / (((math.pi * t) * math.sqrt((2.0 * (1.0 - (3.0 * (v * v)))))) * (1.0 - (v * v)))
function code(v, t)
	return Float64(Float64(1.0 - Float64(5.0 * Float64(v * v))) / Float64(Float64(Float64(pi * t) * sqrt(Float64(2.0 * Float64(1.0 - Float64(3.0 * Float64(v * v)))))) * Float64(1.0 - Float64(v * v))))
end
function tmp = code(v, t)
	tmp = (1.0 - (5.0 * (v * v))) / (((pi * t) * sqrt((2.0 * (1.0 - (3.0 * (v * v)))))) * (1.0 - (v * v)));
end
code[v_, t_] := N[(N[(1.0 - N[(5.0 * N[(v * v), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / N[(N[(N[(Pi * t), $MachinePrecision] * N[Sqrt[N[(2.0 * N[(1.0 - N[(3.0 * N[(v * v), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] * N[(1.0 - N[(v * v), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\frac{1 - 5 \cdot \left(v \cdot v\right)}{\left(\left(\pi \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)}
\end{array}

Sampling outcomes in binary64 precision:

Local Percentage Accuracy vs ?

The average percentage accuracy by input value. Horizontal axis shows value of an input variable; the variable is choosen in the title. Vertical axis is accuracy; higher is better. Red represent the original program, while blue represents Herbie's suggestion. These can be toggled with buttons below the plot. The line is an average while dots represent individual samples.

Accuracy vs Speed?

Herbie found 8 alternatives:

AlternativeAccuracySpeedup
The accuracy (vertical axis) and speed (horizontal axis) of each alternatives. Up and to the right is better. The red square shows the initial program, and each blue circle shows an alternative.The line shows the best available speed-accuracy tradeoffs.

Initial Program: 99.3% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \frac{1 - 5 \cdot \left(v \cdot v\right)}{\left(\left(\pi \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)} \end{array} \]
(FPCore (v t)
 :precision binary64
 (/
  (- 1.0 (* 5.0 (* v v)))
  (* (* (* PI t) (sqrt (* 2.0 (- 1.0 (* 3.0 (* v v)))))) (- 1.0 (* v v)))))
double code(double v, double t) {
	return (1.0 - (5.0 * (v * v))) / (((((double) M_PI) * t) * sqrt((2.0 * (1.0 - (3.0 * (v * v)))))) * (1.0 - (v * v)));
}
public static double code(double v, double t) {
	return (1.0 - (5.0 * (v * v))) / (((Math.PI * t) * Math.sqrt((2.0 * (1.0 - (3.0 * (v * v)))))) * (1.0 - (v * v)));
}
def code(v, t):
	return (1.0 - (5.0 * (v * v))) / (((math.pi * t) * math.sqrt((2.0 * (1.0 - (3.0 * (v * v)))))) * (1.0 - (v * v)))
function code(v, t)
	return Float64(Float64(1.0 - Float64(5.0 * Float64(v * v))) / Float64(Float64(Float64(pi * t) * sqrt(Float64(2.0 * Float64(1.0 - Float64(3.0 * Float64(v * v)))))) * Float64(1.0 - Float64(v * v))))
end
function tmp = code(v, t)
	tmp = (1.0 - (5.0 * (v * v))) / (((pi * t) * sqrt((2.0 * (1.0 - (3.0 * (v * v)))))) * (1.0 - (v * v)));
end
code[v_, t_] := N[(N[(1.0 - N[(5.0 * N[(v * v), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / N[(N[(N[(Pi * t), $MachinePrecision] * N[Sqrt[N[(2.0 * N[(1.0 - N[(3.0 * N[(v * v), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] * N[(1.0 - N[(v * v), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\frac{1 - 5 \cdot \left(v \cdot v\right)}{\left(\left(\pi \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)}
\end{array}

Alternative 1: 99.5% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \frac{\frac{\mathsf{fma}\left(-5, v \cdot v, 1\right)}{\pi}}{\sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)} \cdot \left(\left(1 - v \cdot v\right) \cdot t\right)} \end{array} \]
(FPCore (v t)
 :precision binary64
 (/
  (/ (fma -5.0 (* v v) 1.0) PI)
  (* (sqrt (fma -6.0 (* v v) 2.0)) (* (- 1.0 (* v v)) t))))
double code(double v, double t) {
	return (fma(-5.0, (v * v), 1.0) / ((double) M_PI)) / (sqrt(fma(-6.0, (v * v), 2.0)) * ((1.0 - (v * v)) * t));
}
function code(v, t)
	return Float64(Float64(fma(-5.0, Float64(v * v), 1.0) / pi) / Float64(sqrt(fma(-6.0, Float64(v * v), 2.0)) * Float64(Float64(1.0 - Float64(v * v)) * t)))
end
code[v_, t_] := N[(N[(N[(-5.0 * N[(v * v), $MachinePrecision] + 1.0), $MachinePrecision] / Pi), $MachinePrecision] / N[(N[Sqrt[N[(-6.0 * N[(v * v), $MachinePrecision] + 2.0), $MachinePrecision]], $MachinePrecision] * N[(N[(1.0 - N[(v * v), $MachinePrecision]), $MachinePrecision] * t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\frac{\frac{\mathsf{fma}\left(-5, v \cdot v, 1\right)}{\pi}}{\sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)} \cdot \left(\left(1 - v \cdot v\right) \cdot t\right)}
\end{array}
Derivation
  1. Initial program 99.4%

    \[\frac{1 - 5 \cdot \left(v \cdot v\right)}{\left(\left(\pi \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)} \]
  2. Add Preprocessing
  3. Step-by-step derivation
    1. lift-/.f64N/A

      \[\leadsto \color{blue}{\frac{1 - 5 \cdot \left(v \cdot v\right)}{\left(\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)}} \]
    2. lift-*.f64N/A

      \[\leadsto \frac{1 - 5 \cdot \left(v \cdot v\right)}{\color{blue}{\left(\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)}} \]
    3. associate-/r*N/A

      \[\leadsto \color{blue}{\frac{\frac{1 - 5 \cdot \left(v \cdot v\right)}{\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}}}{1 - v \cdot v}} \]
    4. div-invN/A

      \[\leadsto \color{blue}{\frac{1 - 5 \cdot \left(v \cdot v\right)}{\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}} \cdot \frac{1}{1 - v \cdot v}} \]
    5. lift-*.f64N/A

      \[\leadsto \frac{1 - 5 \cdot \left(v \cdot v\right)}{\color{blue}{\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}}} \cdot \frac{1}{1 - v \cdot v} \]
    6. lift-*.f64N/A

      \[\leadsto \frac{1 - 5 \cdot \left(v \cdot v\right)}{\color{blue}{\left(\mathsf{PI}\left(\right) \cdot t\right)} \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}} \cdot \frac{1}{1 - v \cdot v} \]
    7. associate-*l*N/A

      \[\leadsto \frac{1 - 5 \cdot \left(v \cdot v\right)}{\color{blue}{\mathsf{PI}\left(\right) \cdot \left(t \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right)}} \cdot \frac{1}{1 - v \cdot v} \]
    8. associate-/r*N/A

      \[\leadsto \color{blue}{\frac{\frac{1 - 5 \cdot \left(v \cdot v\right)}{\mathsf{PI}\left(\right)}}{t \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}}} \cdot \frac{1}{1 - v \cdot v} \]
    9. frac-timesN/A

      \[\leadsto \color{blue}{\frac{\frac{1 - 5 \cdot \left(v \cdot v\right)}{\mathsf{PI}\left(\right)} \cdot 1}{\left(t \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)}} \]
  4. Applied rewrites99.6%

    \[\leadsto \color{blue}{\frac{\frac{\mathsf{fma}\left(-5, v \cdot v, 1\right)}{\pi} \cdot 1}{\left(t \cdot \left(1 - v \cdot v\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}}} \]
  5. Applied rewrites99.6%

    \[\leadsto \frac{\color{blue}{\frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{-\pi}}}{\left(t \cdot \left(1 - v \cdot v\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
  6. Step-by-step derivation
    1. lift-/.f64N/A

      \[\leadsto \frac{\color{blue}{\frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\mathsf{neg}\left(\mathsf{PI}\left(\right)\right)}}}{\left(t \cdot \left(1 - v \cdot v\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    2. lift-neg.f64N/A

      \[\leadsto \frac{\frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\color{blue}{\mathsf{neg}\left(\mathsf{PI}\left(\right)\right)}}}{\left(t \cdot \left(1 - v \cdot v\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    3. distribute-frac-neg2N/A

      \[\leadsto \frac{\color{blue}{\mathsf{neg}\left(\frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\mathsf{PI}\left(\right)}\right)}}{\left(t \cdot \left(1 - v \cdot v\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    4. distribute-frac-negN/A

      \[\leadsto \frac{\color{blue}{\frac{\mathsf{neg}\left(\mathsf{fma}\left(5, v \cdot v, -1\right)\right)}{\mathsf{PI}\left(\right)}}}{\left(t \cdot \left(1 - v \cdot v\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    5. lift-fma.f64N/A

      \[\leadsto \frac{\frac{\mathsf{neg}\left(\color{blue}{\left(5 \cdot \left(v \cdot v\right) + -1\right)}\right)}{\mathsf{PI}\left(\right)}}{\left(t \cdot \left(1 - v \cdot v\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    6. +-commutativeN/A

      \[\leadsto \frac{\frac{\mathsf{neg}\left(\color{blue}{\left(-1 + 5 \cdot \left(v \cdot v\right)\right)}\right)}{\mathsf{PI}\left(\right)}}{\left(t \cdot \left(1 - v \cdot v\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    7. distribute-neg-inN/A

      \[\leadsto \frac{\frac{\color{blue}{\left(\mathsf{neg}\left(-1\right)\right) + \left(\mathsf{neg}\left(5 \cdot \left(v \cdot v\right)\right)\right)}}{\mathsf{PI}\left(\right)}}{\left(t \cdot \left(1 - v \cdot v\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    8. metadata-evalN/A

      \[\leadsto \frac{\frac{\color{blue}{1} + \left(\mathsf{neg}\left(5 \cdot \left(v \cdot v\right)\right)\right)}{\mathsf{PI}\left(\right)}}{\left(t \cdot \left(1 - v \cdot v\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    9. sub-negN/A

      \[\leadsto \frac{\frac{\color{blue}{1 - 5 \cdot \left(v \cdot v\right)}}{\mathsf{PI}\left(\right)}}{\left(t \cdot \left(1 - v \cdot v\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    10. lift-*.f64N/A

      \[\leadsto \frac{\frac{1 - 5 \cdot \color{blue}{\left(v \cdot v\right)}}{\mathsf{PI}\left(\right)}}{\left(t \cdot \left(1 - v \cdot v\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    11. lower-/.f64N/A

      \[\leadsto \frac{\color{blue}{\frac{1 - 5 \cdot \left(v \cdot v\right)}{\mathsf{PI}\left(\right)}}}{\left(t \cdot \left(1 - v \cdot v\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    12. lift-*.f64N/A

      \[\leadsto \frac{\frac{1 - 5 \cdot \color{blue}{\left(v \cdot v\right)}}{\mathsf{PI}\left(\right)}}{\left(t \cdot \left(1 - v \cdot v\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    13. sub-negN/A

      \[\leadsto \frac{\frac{\color{blue}{1 + \left(\mathsf{neg}\left(5 \cdot \left(v \cdot v\right)\right)\right)}}{\mathsf{PI}\left(\right)}}{\left(t \cdot \left(1 - v \cdot v\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    14. +-commutativeN/A

      \[\leadsto \frac{\frac{\color{blue}{\left(\mathsf{neg}\left(5 \cdot \left(v \cdot v\right)\right)\right) + 1}}{\mathsf{PI}\left(\right)}}{\left(t \cdot \left(1 - v \cdot v\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    15. distribute-lft-neg-inN/A

      \[\leadsto \frac{\frac{\color{blue}{\left(\mathsf{neg}\left(5\right)\right) \cdot \left(v \cdot v\right)} + 1}{\mathsf{PI}\left(\right)}}{\left(t \cdot \left(1 - v \cdot v\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    16. lower-fma.f64N/A

      \[\leadsto \frac{\frac{\color{blue}{\mathsf{fma}\left(\mathsf{neg}\left(5\right), v \cdot v, 1\right)}}{\mathsf{PI}\left(\right)}}{\left(t \cdot \left(1 - v \cdot v\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    17. metadata-eval99.6

      \[\leadsto \frac{\frac{\mathsf{fma}\left(\color{blue}{-5}, v \cdot v, 1\right)}{\pi}}{\left(t \cdot \left(1 - v \cdot v\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
  7. Applied rewrites99.6%

    \[\leadsto \frac{\color{blue}{\frac{\mathsf{fma}\left(-5, v \cdot v, 1\right)}{\pi}}}{\left(t \cdot \left(1 - v \cdot v\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
  8. Final simplification99.6%

    \[\leadsto \frac{\frac{\mathsf{fma}\left(-5, v \cdot v, 1\right)}{\pi}}{\sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)} \cdot \left(\left(1 - v \cdot v\right) \cdot t\right)} \]
  9. Add Preprocessing

Alternative 2: 99.4% accurate, 1.1× speedup?

\[\begin{array}{l} \\ \frac{1 - 5 \cdot \left(v \cdot v\right)}{\left(\left(\sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)} \cdot \pi\right) \cdot t\right) \cdot \left(1 - v \cdot v\right)} \end{array} \]
(FPCore (v t)
 :precision binary64
 (/
  (- 1.0 (* 5.0 (* v v)))
  (* (* (* (sqrt (fma -6.0 (* v v) 2.0)) PI) t) (- 1.0 (* v v)))))
double code(double v, double t) {
	return (1.0 - (5.0 * (v * v))) / (((sqrt(fma(-6.0, (v * v), 2.0)) * ((double) M_PI)) * t) * (1.0 - (v * v)));
}
function code(v, t)
	return Float64(Float64(1.0 - Float64(5.0 * Float64(v * v))) / Float64(Float64(Float64(sqrt(fma(-6.0, Float64(v * v), 2.0)) * pi) * t) * Float64(1.0 - Float64(v * v))))
end
code[v_, t_] := N[(N[(1.0 - N[(5.0 * N[(v * v), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / N[(N[(N[(N[Sqrt[N[(-6.0 * N[(v * v), $MachinePrecision] + 2.0), $MachinePrecision]], $MachinePrecision] * Pi), $MachinePrecision] * t), $MachinePrecision] * N[(1.0 - N[(v * v), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\frac{1 - 5 \cdot \left(v \cdot v\right)}{\left(\left(\sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)} \cdot \pi\right) \cdot t\right) \cdot \left(1 - v \cdot v\right)}
\end{array}
Derivation
  1. Initial program 99.4%

    \[\frac{1 - 5 \cdot \left(v \cdot v\right)}{\left(\left(\pi \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)} \]
  2. Add Preprocessing
  3. Step-by-step derivation
    1. lift-*.f64N/A

      \[\leadsto \frac{1 - 5 \cdot \left(v \cdot v\right)}{\color{blue}{\left(\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right)} \cdot \left(1 - v \cdot v\right)} \]
    2. *-commutativeN/A

      \[\leadsto \frac{1 - 5 \cdot \left(v \cdot v\right)}{\color{blue}{\left(\sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)} \cdot \left(\mathsf{PI}\left(\right) \cdot t\right)\right)} \cdot \left(1 - v \cdot v\right)} \]
    3. lift-*.f64N/A

      \[\leadsto \frac{1 - 5 \cdot \left(v \cdot v\right)}{\left(\sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)} \cdot \color{blue}{\left(\mathsf{PI}\left(\right) \cdot t\right)}\right) \cdot \left(1 - v \cdot v\right)} \]
    4. associate-*r*N/A

      \[\leadsto \frac{1 - 5 \cdot \left(v \cdot v\right)}{\color{blue}{\left(\left(\sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)} \cdot \mathsf{PI}\left(\right)\right) \cdot t\right)} \cdot \left(1 - v \cdot v\right)} \]
    5. lower-*.f64N/A

      \[\leadsto \frac{1 - 5 \cdot \left(v \cdot v\right)}{\color{blue}{\left(\left(\sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)} \cdot \mathsf{PI}\left(\right)\right) \cdot t\right)} \cdot \left(1 - v \cdot v\right)} \]
  4. Applied rewrites99.5%

    \[\leadsto \frac{1 - 5 \cdot \left(v \cdot v\right)}{\color{blue}{\left(\left(\sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)} \cdot \pi\right) \cdot t\right)} \cdot \left(1 - v \cdot v\right)} \]
  5. Add Preprocessing

Alternative 3: 99.3% accurate, 1.1× speedup?

\[\begin{array}{l} \\ \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\mathsf{fma}\left(t \cdot v, v, -t\right) \cdot \pi\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \end{array} \]
(FPCore (v t)
 :precision binary64
 (/
  (fma 5.0 (* v v) -1.0)
  (* (* (fma (* t v) v (- t)) PI) (sqrt (fma -6.0 (* v v) 2.0)))))
double code(double v, double t) {
	return fma(5.0, (v * v), -1.0) / ((fma((t * v), v, -t) * ((double) M_PI)) * sqrt(fma(-6.0, (v * v), 2.0)));
}
function code(v, t)
	return Float64(fma(5.0, Float64(v * v), -1.0) / Float64(Float64(fma(Float64(t * v), v, Float64(-t)) * pi) * sqrt(fma(-6.0, Float64(v * v), 2.0))))
end
code[v_, t_] := N[(N[(5.0 * N[(v * v), $MachinePrecision] + -1.0), $MachinePrecision] / N[(N[(N[(N[(t * v), $MachinePrecision] * v + (-t)), $MachinePrecision] * Pi), $MachinePrecision] * N[Sqrt[N[(-6.0 * N[(v * v), $MachinePrecision] + 2.0), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\mathsf{fma}\left(t \cdot v, v, -t\right) \cdot \pi\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}}
\end{array}
Derivation
  1. Initial program 99.4%

    \[\frac{1 - 5 \cdot \left(v \cdot v\right)}{\left(\left(\pi \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)} \]
  2. Add Preprocessing
  3. Step-by-step derivation
    1. lift-/.f64N/A

      \[\leadsto \color{blue}{\frac{1 - 5 \cdot \left(v \cdot v\right)}{\left(\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)}} \]
    2. frac-2negN/A

      \[\leadsto \color{blue}{\frac{\mathsf{neg}\left(\left(1 - 5 \cdot \left(v \cdot v\right)\right)\right)}{\mathsf{neg}\left(\left(\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)\right)}} \]
    3. lower-/.f64N/A

      \[\leadsto \color{blue}{\frac{\mathsf{neg}\left(\left(1 - 5 \cdot \left(v \cdot v\right)\right)\right)}{\mathsf{neg}\left(\left(\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)\right)}} \]
    4. lift--.f64N/A

      \[\leadsto \frac{\mathsf{neg}\left(\color{blue}{\left(1 - 5 \cdot \left(v \cdot v\right)\right)}\right)}{\mathsf{neg}\left(\left(\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)\right)} \]
    5. sub-negN/A

      \[\leadsto \frac{\mathsf{neg}\left(\color{blue}{\left(1 + \left(\mathsf{neg}\left(5 \cdot \left(v \cdot v\right)\right)\right)\right)}\right)}{\mathsf{neg}\left(\left(\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)\right)} \]
    6. +-commutativeN/A

      \[\leadsto \frac{\mathsf{neg}\left(\color{blue}{\left(\left(\mathsf{neg}\left(5 \cdot \left(v \cdot v\right)\right)\right) + 1\right)}\right)}{\mathsf{neg}\left(\left(\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)\right)} \]
    7. distribute-neg-inN/A

      \[\leadsto \frac{\color{blue}{\left(\mathsf{neg}\left(\left(\mathsf{neg}\left(5 \cdot \left(v \cdot v\right)\right)\right)\right)\right) + \left(\mathsf{neg}\left(1\right)\right)}}{\mathsf{neg}\left(\left(\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)\right)} \]
    8. remove-double-negN/A

      \[\leadsto \frac{\color{blue}{5 \cdot \left(v \cdot v\right)} + \left(\mathsf{neg}\left(1\right)\right)}{\mathsf{neg}\left(\left(\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)\right)} \]
    9. lift-*.f64N/A

      \[\leadsto \frac{\color{blue}{5 \cdot \left(v \cdot v\right)} + \left(\mathsf{neg}\left(1\right)\right)}{\mathsf{neg}\left(\left(\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)\right)} \]
    10. metadata-evalN/A

      \[\leadsto \frac{5 \cdot \left(v \cdot v\right) + \color{blue}{-1}}{\mathsf{neg}\left(\left(\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)\right)} \]
    11. lower-fma.f64N/A

      \[\leadsto \frac{\color{blue}{\mathsf{fma}\left(5, v \cdot v, -1\right)}}{\mathsf{neg}\left(\left(\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)\right)} \]
    12. lift-*.f64N/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\mathsf{neg}\left(\color{blue}{\left(\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)}\right)} \]
    13. lift-*.f64N/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\mathsf{neg}\left(\color{blue}{\left(\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right)} \cdot \left(1 - v \cdot v\right)\right)} \]
    14. associate-*l*N/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\mathsf{neg}\left(\color{blue}{\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \left(\sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)} \cdot \left(1 - v \cdot v\right)\right)}\right)} \]
  4. Applied rewrites99.4%

    \[\leadsto \color{blue}{\frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\left(\left(-t\right) \cdot \pi\right) \cdot \left(1 - v \cdot v\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}}} \]
  5. Taylor expanded in v around 0

    \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\color{blue}{\left(-1 \cdot \left(t \cdot \mathsf{PI}\left(\right)\right) + t \cdot \left({v}^{2} \cdot \mathsf{PI}\left(\right)\right)\right)} \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
  6. Step-by-step derivation
    1. +-commutativeN/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\color{blue}{\left(t \cdot \left({v}^{2} \cdot \mathsf{PI}\left(\right)\right) + -1 \cdot \left(t \cdot \mathsf{PI}\left(\right)\right)\right)} \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    2. associate-*r*N/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\color{blue}{\left(t \cdot {v}^{2}\right) \cdot \mathsf{PI}\left(\right)} + -1 \cdot \left(t \cdot \mathsf{PI}\left(\right)\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    3. associate-*r*N/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\left(t \cdot {v}^{2}\right) \cdot \mathsf{PI}\left(\right) + \color{blue}{\left(-1 \cdot t\right) \cdot \mathsf{PI}\left(\right)}\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    4. distribute-rgt-outN/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\color{blue}{\left(\mathsf{PI}\left(\right) \cdot \left(t \cdot {v}^{2} + -1 \cdot t\right)\right)} \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    5. lower-*.f64N/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\color{blue}{\left(\mathsf{PI}\left(\right) \cdot \left(t \cdot {v}^{2} + -1 \cdot t\right)\right)} \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    6. lower-PI.f64N/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\color{blue}{\mathsf{PI}\left(\right)} \cdot \left(t \cdot {v}^{2} + -1 \cdot t\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    7. unpow2N/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\mathsf{PI}\left(\right) \cdot \left(t \cdot \color{blue}{\left(v \cdot v\right)} + -1 \cdot t\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    8. associate-*r*N/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\mathsf{PI}\left(\right) \cdot \left(\color{blue}{\left(t \cdot v\right) \cdot v} + -1 \cdot t\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    9. lower-fma.f64N/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\mathsf{PI}\left(\right) \cdot \color{blue}{\mathsf{fma}\left(t \cdot v, v, -1 \cdot t\right)}\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    10. lower-*.f64N/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\mathsf{PI}\left(\right) \cdot \mathsf{fma}\left(\color{blue}{t \cdot v}, v, -1 \cdot t\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    11. mul-1-negN/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\mathsf{PI}\left(\right) \cdot \mathsf{fma}\left(t \cdot v, v, \color{blue}{\mathsf{neg}\left(t\right)}\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    12. lower-neg.f6499.4

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\pi \cdot \mathsf{fma}\left(t \cdot v, v, \color{blue}{-t}\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
  7. Applied rewrites99.4%

    \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\color{blue}{\left(\pi \cdot \mathsf{fma}\left(t \cdot v, v, -t\right)\right)} \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
  8. Final simplification99.4%

    \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\mathsf{fma}\left(t \cdot v, v, -t\right) \cdot \pi\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
  9. Add Preprocessing

Alternative 4: 99.3% accurate, 1.2× speedup?

\[\begin{array}{l} \\ \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\left(\mathsf{fma}\left(v, v, -1\right) \cdot \pi\right) \cdot t\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \end{array} \]
(FPCore (v t)
 :precision binary64
 (/
  (fma 5.0 (* v v) -1.0)
  (* (* (* (fma v v -1.0) PI) t) (sqrt (fma -6.0 (* v v) 2.0)))))
double code(double v, double t) {
	return fma(5.0, (v * v), -1.0) / (((fma(v, v, -1.0) * ((double) M_PI)) * t) * sqrt(fma(-6.0, (v * v), 2.0)));
}
function code(v, t)
	return Float64(fma(5.0, Float64(v * v), -1.0) / Float64(Float64(Float64(fma(v, v, -1.0) * pi) * t) * sqrt(fma(-6.0, Float64(v * v), 2.0))))
end
code[v_, t_] := N[(N[(5.0 * N[(v * v), $MachinePrecision] + -1.0), $MachinePrecision] / N[(N[(N[(N[(v * v + -1.0), $MachinePrecision] * Pi), $MachinePrecision] * t), $MachinePrecision] * N[Sqrt[N[(-6.0 * N[(v * v), $MachinePrecision] + 2.0), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\left(\mathsf{fma}\left(v, v, -1\right) \cdot \pi\right) \cdot t\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}}
\end{array}
Derivation
  1. Initial program 99.4%

    \[\frac{1 - 5 \cdot \left(v \cdot v\right)}{\left(\left(\pi \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)} \]
  2. Add Preprocessing
  3. Step-by-step derivation
    1. lift-/.f64N/A

      \[\leadsto \color{blue}{\frac{1 - 5 \cdot \left(v \cdot v\right)}{\left(\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)}} \]
    2. frac-2negN/A

      \[\leadsto \color{blue}{\frac{\mathsf{neg}\left(\left(1 - 5 \cdot \left(v \cdot v\right)\right)\right)}{\mathsf{neg}\left(\left(\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)\right)}} \]
    3. lower-/.f64N/A

      \[\leadsto \color{blue}{\frac{\mathsf{neg}\left(\left(1 - 5 \cdot \left(v \cdot v\right)\right)\right)}{\mathsf{neg}\left(\left(\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)\right)}} \]
    4. lift--.f64N/A

      \[\leadsto \frac{\mathsf{neg}\left(\color{blue}{\left(1 - 5 \cdot \left(v \cdot v\right)\right)}\right)}{\mathsf{neg}\left(\left(\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)\right)} \]
    5. sub-negN/A

      \[\leadsto \frac{\mathsf{neg}\left(\color{blue}{\left(1 + \left(\mathsf{neg}\left(5 \cdot \left(v \cdot v\right)\right)\right)\right)}\right)}{\mathsf{neg}\left(\left(\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)\right)} \]
    6. +-commutativeN/A

      \[\leadsto \frac{\mathsf{neg}\left(\color{blue}{\left(\left(\mathsf{neg}\left(5 \cdot \left(v \cdot v\right)\right)\right) + 1\right)}\right)}{\mathsf{neg}\left(\left(\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)\right)} \]
    7. distribute-neg-inN/A

      \[\leadsto \frac{\color{blue}{\left(\mathsf{neg}\left(\left(\mathsf{neg}\left(5 \cdot \left(v \cdot v\right)\right)\right)\right)\right) + \left(\mathsf{neg}\left(1\right)\right)}}{\mathsf{neg}\left(\left(\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)\right)} \]
    8. remove-double-negN/A

      \[\leadsto \frac{\color{blue}{5 \cdot \left(v \cdot v\right)} + \left(\mathsf{neg}\left(1\right)\right)}{\mathsf{neg}\left(\left(\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)\right)} \]
    9. lift-*.f64N/A

      \[\leadsto \frac{\color{blue}{5 \cdot \left(v \cdot v\right)} + \left(\mathsf{neg}\left(1\right)\right)}{\mathsf{neg}\left(\left(\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)\right)} \]
    10. metadata-evalN/A

      \[\leadsto \frac{5 \cdot \left(v \cdot v\right) + \color{blue}{-1}}{\mathsf{neg}\left(\left(\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)\right)} \]
    11. lower-fma.f64N/A

      \[\leadsto \frac{\color{blue}{\mathsf{fma}\left(5, v \cdot v, -1\right)}}{\mathsf{neg}\left(\left(\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)\right)} \]
    12. lift-*.f64N/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\mathsf{neg}\left(\color{blue}{\left(\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)}\right)} \]
    13. lift-*.f64N/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\mathsf{neg}\left(\color{blue}{\left(\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right)} \cdot \left(1 - v \cdot v\right)\right)} \]
    14. associate-*l*N/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\mathsf{neg}\left(\color{blue}{\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \left(\sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)} \cdot \left(1 - v \cdot v\right)\right)}\right)} \]
  4. Applied rewrites99.4%

    \[\leadsto \color{blue}{\frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\left(\left(-t\right) \cdot \pi\right) \cdot \left(1 - v \cdot v\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}}} \]
  5. Taylor expanded in v around 0

    \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\color{blue}{\left(-1 \cdot \left(t \cdot \mathsf{PI}\left(\right)\right) + t \cdot \left({v}^{2} \cdot \mathsf{PI}\left(\right)\right)\right)} \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
  6. Step-by-step derivation
    1. +-commutativeN/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\color{blue}{\left(t \cdot \left({v}^{2} \cdot \mathsf{PI}\left(\right)\right) + -1 \cdot \left(t \cdot \mathsf{PI}\left(\right)\right)\right)} \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    2. associate-*r*N/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\color{blue}{\left(t \cdot {v}^{2}\right) \cdot \mathsf{PI}\left(\right)} + -1 \cdot \left(t \cdot \mathsf{PI}\left(\right)\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    3. associate-*r*N/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\left(t \cdot {v}^{2}\right) \cdot \mathsf{PI}\left(\right) + \color{blue}{\left(-1 \cdot t\right) \cdot \mathsf{PI}\left(\right)}\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    4. distribute-rgt-outN/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\color{blue}{\left(\mathsf{PI}\left(\right) \cdot \left(t \cdot {v}^{2} + -1 \cdot t\right)\right)} \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    5. lower-*.f64N/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\color{blue}{\left(\mathsf{PI}\left(\right) \cdot \left(t \cdot {v}^{2} + -1 \cdot t\right)\right)} \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    6. lower-PI.f64N/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\color{blue}{\mathsf{PI}\left(\right)} \cdot \left(t \cdot {v}^{2} + -1 \cdot t\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    7. unpow2N/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\mathsf{PI}\left(\right) \cdot \left(t \cdot \color{blue}{\left(v \cdot v\right)} + -1 \cdot t\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    8. associate-*r*N/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\mathsf{PI}\left(\right) \cdot \left(\color{blue}{\left(t \cdot v\right) \cdot v} + -1 \cdot t\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    9. lower-fma.f64N/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\mathsf{PI}\left(\right) \cdot \color{blue}{\mathsf{fma}\left(t \cdot v, v, -1 \cdot t\right)}\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    10. lower-*.f64N/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\mathsf{PI}\left(\right) \cdot \mathsf{fma}\left(\color{blue}{t \cdot v}, v, -1 \cdot t\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    11. mul-1-negN/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\mathsf{PI}\left(\right) \cdot \mathsf{fma}\left(t \cdot v, v, \color{blue}{\mathsf{neg}\left(t\right)}\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    12. lower-neg.f6499.4

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\pi \cdot \mathsf{fma}\left(t \cdot v, v, \color{blue}{-t}\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
  7. Applied rewrites99.4%

    \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\color{blue}{\left(\pi \cdot \mathsf{fma}\left(t \cdot v, v, -t\right)\right)} \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
  8. Taylor expanded in v around 0

    \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\color{blue}{\left(-1 \cdot \left(t \cdot \mathsf{PI}\left(\right)\right) + t \cdot \left({v}^{2} \cdot \mathsf{PI}\left(\right)\right)\right)} \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
  9. Step-by-step derivation
    1. +-commutativeN/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\color{blue}{\left(t \cdot \left({v}^{2} \cdot \mathsf{PI}\left(\right)\right) + -1 \cdot \left(t \cdot \mathsf{PI}\left(\right)\right)\right)} \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    2. *-commutativeN/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(t \cdot \color{blue}{\left(\mathsf{PI}\left(\right) \cdot {v}^{2}\right)} + -1 \cdot \left(t \cdot \mathsf{PI}\left(\right)\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    3. associate-*r*N/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\color{blue}{\left(t \cdot \mathsf{PI}\left(\right)\right) \cdot {v}^{2}} + -1 \cdot \left(t \cdot \mathsf{PI}\left(\right)\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    4. *-commutativeN/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\left(t \cdot \mathsf{PI}\left(\right)\right) \cdot {v}^{2} + \color{blue}{\left(t \cdot \mathsf{PI}\left(\right)\right) \cdot -1}\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    5. distribute-lft-inN/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\color{blue}{\left(\left(t \cdot \mathsf{PI}\left(\right)\right) \cdot \left({v}^{2} + -1\right)\right)} \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    6. metadata-evalN/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\left(t \cdot \mathsf{PI}\left(\right)\right) \cdot \left({v}^{2} + \color{blue}{\left(\mathsf{neg}\left(1\right)\right)}\right)\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    7. sub-negN/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\left(t \cdot \mathsf{PI}\left(\right)\right) \cdot \color{blue}{\left({v}^{2} - 1\right)}\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    8. associate-*r*N/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\color{blue}{\left(t \cdot \left(\mathsf{PI}\left(\right) \cdot \left({v}^{2} - 1\right)\right)\right)} \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    9. *-commutativeN/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\color{blue}{\left(\left(\mathsf{PI}\left(\right) \cdot \left({v}^{2} - 1\right)\right) \cdot t\right)} \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    10. lower-*.f64N/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\color{blue}{\left(\left(\mathsf{PI}\left(\right) \cdot \left({v}^{2} - 1\right)\right) \cdot t\right)} \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    11. *-commutativeN/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\color{blue}{\left(\left({v}^{2} - 1\right) \cdot \mathsf{PI}\left(\right)\right)} \cdot t\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    12. lower-*.f64N/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\color{blue}{\left(\left({v}^{2} - 1\right) \cdot \mathsf{PI}\left(\right)\right)} \cdot t\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    13. sub-negN/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\left(\color{blue}{\left({v}^{2} + \left(\mathsf{neg}\left(1\right)\right)\right)} \cdot \mathsf{PI}\left(\right)\right) \cdot t\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    14. unpow2N/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\left(\left(\color{blue}{v \cdot v} + \left(\mathsf{neg}\left(1\right)\right)\right) \cdot \mathsf{PI}\left(\right)\right) \cdot t\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    15. metadata-evalN/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\left(\left(v \cdot v + \color{blue}{-1}\right) \cdot \mathsf{PI}\left(\right)\right) \cdot t\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    16. lower-fma.f64N/A

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\left(\color{blue}{\mathsf{fma}\left(v, v, -1\right)} \cdot \mathsf{PI}\left(\right)\right) \cdot t\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
    17. lower-PI.f6499.4

      \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\left(\left(\mathsf{fma}\left(v, v, -1\right) \cdot \color{blue}{\pi}\right) \cdot t\right) \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
  10. Applied rewrites99.4%

    \[\leadsto \frac{\mathsf{fma}\left(5, v \cdot v, -1\right)}{\color{blue}{\left(\left(\mathsf{fma}\left(v, v, -1\right) \cdot \pi\right) \cdot t\right)} \cdot \sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)}} \]
  11. Add Preprocessing

Alternative 5: 98.9% accurate, 2.0× speedup?

\[\begin{array}{l} \\ \frac{\frac{1}{\sqrt{2} \cdot \pi}}{t} \end{array} \]
(FPCore (v t) :precision binary64 (/ (/ 1.0 (* (sqrt 2.0) PI)) t))
double code(double v, double t) {
	return (1.0 / (sqrt(2.0) * ((double) M_PI))) / t;
}
public static double code(double v, double t) {
	return (1.0 / (Math.sqrt(2.0) * Math.PI)) / t;
}
def code(v, t):
	return (1.0 / (math.sqrt(2.0) * math.pi)) / t
function code(v, t)
	return Float64(Float64(1.0 / Float64(sqrt(2.0) * pi)) / t)
end
function tmp = code(v, t)
	tmp = (1.0 / (sqrt(2.0) * pi)) / t;
end
code[v_, t_] := N[(N[(1.0 / N[(N[Sqrt[2.0], $MachinePrecision] * Pi), $MachinePrecision]), $MachinePrecision] / t), $MachinePrecision]
\begin{array}{l}

\\
\frac{\frac{1}{\sqrt{2} \cdot \pi}}{t}
\end{array}
Derivation
  1. Initial program 99.4%

    \[\frac{1 - 5 \cdot \left(v \cdot v\right)}{\left(\left(\pi \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)} \]
  2. Add Preprocessing
  3. Taylor expanded in v around 0

    \[\leadsto \color{blue}{\frac{1}{t \cdot \left(\mathsf{PI}\left(\right) \cdot \sqrt{2}\right)}} \]
  4. Step-by-step derivation
    1. lower-/.f64N/A

      \[\leadsto \color{blue}{\frac{1}{t \cdot \left(\mathsf{PI}\left(\right) \cdot \sqrt{2}\right)}} \]
    2. *-commutativeN/A

      \[\leadsto \frac{1}{\color{blue}{\left(\mathsf{PI}\left(\right) \cdot \sqrt{2}\right) \cdot t}} \]
    3. lower-*.f64N/A

      \[\leadsto \frac{1}{\color{blue}{\left(\mathsf{PI}\left(\right) \cdot \sqrt{2}\right) \cdot t}} \]
    4. *-commutativeN/A

      \[\leadsto \frac{1}{\color{blue}{\left(\sqrt{2} \cdot \mathsf{PI}\left(\right)\right)} \cdot t} \]
    5. lower-*.f64N/A

      \[\leadsto \frac{1}{\color{blue}{\left(\sqrt{2} \cdot \mathsf{PI}\left(\right)\right)} \cdot t} \]
    6. lower-sqrt.f64N/A

      \[\leadsto \frac{1}{\left(\color{blue}{\sqrt{2}} \cdot \mathsf{PI}\left(\right)\right) \cdot t} \]
    7. lower-PI.f6498.7

      \[\leadsto \frac{1}{\left(\sqrt{2} \cdot \color{blue}{\pi}\right) \cdot t} \]
  5. Applied rewrites98.7%

    \[\leadsto \color{blue}{\frac{1}{\left(\sqrt{2} \cdot \pi\right) \cdot t}} \]
  6. Step-by-step derivation
    1. Applied rewrites99.1%

      \[\leadsto \frac{\frac{1}{\sqrt{2} \cdot \pi}}{\color{blue}{t}} \]
    2. Add Preprocessing

    Alternative 6: 98.5% accurate, 2.4× speedup?

    \[\begin{array}{l} \\ \frac{1}{\left(\sqrt{2} \cdot \pi\right) \cdot t} \end{array} \]
    (FPCore (v t) :precision binary64 (/ 1.0 (* (* (sqrt 2.0) PI) t)))
    double code(double v, double t) {
    	return 1.0 / ((sqrt(2.0) * ((double) M_PI)) * t);
    }
    
    public static double code(double v, double t) {
    	return 1.0 / ((Math.sqrt(2.0) * Math.PI) * t);
    }
    
    def code(v, t):
    	return 1.0 / ((math.sqrt(2.0) * math.pi) * t)
    
    function code(v, t)
    	return Float64(1.0 / Float64(Float64(sqrt(2.0) * pi) * t))
    end
    
    function tmp = code(v, t)
    	tmp = 1.0 / ((sqrt(2.0) * pi) * t);
    end
    
    code[v_, t_] := N[(1.0 / N[(N[(N[Sqrt[2.0], $MachinePrecision] * Pi), $MachinePrecision] * t), $MachinePrecision]), $MachinePrecision]
    
    \begin{array}{l}
    
    \\
    \frac{1}{\left(\sqrt{2} \cdot \pi\right) \cdot t}
    \end{array}
    
    Derivation
    1. Initial program 99.4%

      \[\frac{1 - 5 \cdot \left(v \cdot v\right)}{\left(\left(\pi \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)} \]
    2. Add Preprocessing
    3. Taylor expanded in v around 0

      \[\leadsto \color{blue}{\frac{1}{t \cdot \left(\mathsf{PI}\left(\right) \cdot \sqrt{2}\right)}} \]
    4. Step-by-step derivation
      1. lower-/.f64N/A

        \[\leadsto \color{blue}{\frac{1}{t \cdot \left(\mathsf{PI}\left(\right) \cdot \sqrt{2}\right)}} \]
      2. *-commutativeN/A

        \[\leadsto \frac{1}{\color{blue}{\left(\mathsf{PI}\left(\right) \cdot \sqrt{2}\right) \cdot t}} \]
      3. lower-*.f64N/A

        \[\leadsto \frac{1}{\color{blue}{\left(\mathsf{PI}\left(\right) \cdot \sqrt{2}\right) \cdot t}} \]
      4. *-commutativeN/A

        \[\leadsto \frac{1}{\color{blue}{\left(\sqrt{2} \cdot \mathsf{PI}\left(\right)\right)} \cdot t} \]
      5. lower-*.f64N/A

        \[\leadsto \frac{1}{\color{blue}{\left(\sqrt{2} \cdot \mathsf{PI}\left(\right)\right)} \cdot t} \]
      6. lower-sqrt.f64N/A

        \[\leadsto \frac{1}{\left(\color{blue}{\sqrt{2}} \cdot \mathsf{PI}\left(\right)\right) \cdot t} \]
      7. lower-PI.f6498.7

        \[\leadsto \frac{1}{\left(\sqrt{2} \cdot \color{blue}{\pi}\right) \cdot t} \]
    5. Applied rewrites98.7%

      \[\leadsto \color{blue}{\frac{1}{\left(\sqrt{2} \cdot \pi\right) \cdot t}} \]
    6. Add Preprocessing

    Alternative 7: 98.4% accurate, 2.4× speedup?

    \[\begin{array}{l} \\ \frac{1}{\left(t \cdot \pi\right) \cdot \sqrt{2}} \end{array} \]
    (FPCore (v t) :precision binary64 (/ 1.0 (* (* t PI) (sqrt 2.0))))
    double code(double v, double t) {
    	return 1.0 / ((t * ((double) M_PI)) * sqrt(2.0));
    }
    
    public static double code(double v, double t) {
    	return 1.0 / ((t * Math.PI) * Math.sqrt(2.0));
    }
    
    def code(v, t):
    	return 1.0 / ((t * math.pi) * math.sqrt(2.0))
    
    function code(v, t)
    	return Float64(1.0 / Float64(Float64(t * pi) * sqrt(2.0)))
    end
    
    function tmp = code(v, t)
    	tmp = 1.0 / ((t * pi) * sqrt(2.0));
    end
    
    code[v_, t_] := N[(1.0 / N[(N[(t * Pi), $MachinePrecision] * N[Sqrt[2.0], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
    
    \begin{array}{l}
    
    \\
    \frac{1}{\left(t \cdot \pi\right) \cdot \sqrt{2}}
    \end{array}
    
    Derivation
    1. Initial program 99.4%

      \[\frac{1 - 5 \cdot \left(v \cdot v\right)}{\left(\left(\pi \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)} \]
    2. Add Preprocessing
    3. Taylor expanded in v around 0

      \[\leadsto \color{blue}{\frac{1}{t \cdot \left(\mathsf{PI}\left(\right) \cdot \sqrt{2}\right)}} \]
    4. Step-by-step derivation
      1. lower-/.f64N/A

        \[\leadsto \color{blue}{\frac{1}{t \cdot \left(\mathsf{PI}\left(\right) \cdot \sqrt{2}\right)}} \]
      2. *-commutativeN/A

        \[\leadsto \frac{1}{\color{blue}{\left(\mathsf{PI}\left(\right) \cdot \sqrt{2}\right) \cdot t}} \]
      3. lower-*.f64N/A

        \[\leadsto \frac{1}{\color{blue}{\left(\mathsf{PI}\left(\right) \cdot \sqrt{2}\right) \cdot t}} \]
      4. *-commutativeN/A

        \[\leadsto \frac{1}{\color{blue}{\left(\sqrt{2} \cdot \mathsf{PI}\left(\right)\right)} \cdot t} \]
      5. lower-*.f64N/A

        \[\leadsto \frac{1}{\color{blue}{\left(\sqrt{2} \cdot \mathsf{PI}\left(\right)\right)} \cdot t} \]
      6. lower-sqrt.f64N/A

        \[\leadsto \frac{1}{\left(\color{blue}{\sqrt{2}} \cdot \mathsf{PI}\left(\right)\right) \cdot t} \]
      7. lower-PI.f6498.7

        \[\leadsto \frac{1}{\left(\sqrt{2} \cdot \color{blue}{\pi}\right) \cdot t} \]
    5. Applied rewrites98.7%

      \[\leadsto \color{blue}{\frac{1}{\left(\sqrt{2} \cdot \pi\right) \cdot t}} \]
    6. Step-by-step derivation
      1. Applied rewrites98.6%

        \[\leadsto \frac{1}{\left(t \cdot \pi\right) \cdot \color{blue}{\sqrt{2}}} \]
      2. Add Preprocessing

      Alternative 8: 98.0% accurate, 2.8× speedup?

      \[\begin{array}{l} \\ \frac{\sqrt{0.5}}{t \cdot \pi} \end{array} \]
      (FPCore (v t) :precision binary64 (/ (sqrt 0.5) (* t PI)))
      double code(double v, double t) {
      	return sqrt(0.5) / (t * ((double) M_PI));
      }
      
      public static double code(double v, double t) {
      	return Math.sqrt(0.5) / (t * Math.PI);
      }
      
      def code(v, t):
      	return math.sqrt(0.5) / (t * math.pi)
      
      function code(v, t)
      	return Float64(sqrt(0.5) / Float64(t * pi))
      end
      
      function tmp = code(v, t)
      	tmp = sqrt(0.5) / (t * pi);
      end
      
      code[v_, t_] := N[(N[Sqrt[0.5], $MachinePrecision] / N[(t * Pi), $MachinePrecision]), $MachinePrecision]
      
      \begin{array}{l}
      
      \\
      \frac{\sqrt{0.5}}{t \cdot \pi}
      \end{array}
      
      Derivation
      1. Initial program 99.4%

        \[\frac{1 - 5 \cdot \left(v \cdot v\right)}{\left(\left(\pi \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)} \]
      2. Add Preprocessing
      3. Step-by-step derivation
        1. lift-*.f64N/A

          \[\leadsto \frac{1 - 5 \cdot \left(v \cdot v\right)}{\color{blue}{\left(\left(\mathsf{PI}\left(\right) \cdot t\right) \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right)} \cdot \left(1 - v \cdot v\right)} \]
        2. lift-*.f64N/A

          \[\leadsto \frac{1 - 5 \cdot \left(v \cdot v\right)}{\left(\color{blue}{\left(\mathsf{PI}\left(\right) \cdot t\right)} \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \left(1 - v \cdot v\right)} \]
        3. associate-*l*N/A

          \[\leadsto \frac{1 - 5 \cdot \left(v \cdot v\right)}{\color{blue}{\left(\mathsf{PI}\left(\right) \cdot \left(t \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right)\right)} \cdot \left(1 - v \cdot v\right)} \]
        4. *-commutativeN/A

          \[\leadsto \frac{1 - 5 \cdot \left(v \cdot v\right)}{\color{blue}{\left(\left(t \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \mathsf{PI}\left(\right)\right)} \cdot \left(1 - v \cdot v\right)} \]
        5. lower-*.f64N/A

          \[\leadsto \frac{1 - 5 \cdot \left(v \cdot v\right)}{\color{blue}{\left(\left(t \cdot \sqrt{2 \cdot \left(1 - 3 \cdot \left(v \cdot v\right)\right)}\right) \cdot \mathsf{PI}\left(\right)\right)} \cdot \left(1 - v \cdot v\right)} \]
      4. Applied rewrites99.3%

        \[\leadsto \frac{1 - 5 \cdot \left(v \cdot v\right)}{\color{blue}{\left(\left(\sqrt{\mathsf{fma}\left(-6, v \cdot v, 2\right)} \cdot t\right) \cdot \pi\right)} \cdot \left(1 - v \cdot v\right)} \]
      5. Taylor expanded in v around 0

        \[\leadsto \color{blue}{\frac{\sqrt{\frac{1}{2}}}{t \cdot \mathsf{PI}\left(\right)}} \]
      6. Step-by-step derivation
        1. lower-/.f64N/A

          \[\leadsto \color{blue}{\frac{\sqrt{\frac{1}{2}}}{t \cdot \mathsf{PI}\left(\right)}} \]
        2. lower-sqrt.f64N/A

          \[\leadsto \frac{\color{blue}{\sqrt{\frac{1}{2}}}}{t \cdot \mathsf{PI}\left(\right)} \]
        3. *-commutativeN/A

          \[\leadsto \frac{\sqrt{\frac{1}{2}}}{\color{blue}{\mathsf{PI}\left(\right) \cdot t}} \]
        4. lower-*.f64N/A

          \[\leadsto \frac{\sqrt{\frac{1}{2}}}{\color{blue}{\mathsf{PI}\left(\right) \cdot t}} \]
        5. lower-PI.f6498.2

          \[\leadsto \frac{\sqrt{0.5}}{\color{blue}{\pi} \cdot t} \]
      7. Applied rewrites98.2%

        \[\leadsto \color{blue}{\frac{\sqrt{0.5}}{\pi \cdot t}} \]
      8. Final simplification98.2%

        \[\leadsto \frac{\sqrt{0.5}}{t \cdot \pi} \]
      9. Add Preprocessing

      Reproduce

      ?
      herbie shell --seed 2024235 
      (FPCore (v t)
        :name "Falkner and Boettcher, Equation (20:1,3)"
        :precision binary64
        (/ (- 1.0 (* 5.0 (* v v))) (* (* (* PI t) (sqrt (* 2.0 (- 1.0 (* 3.0 (* v v)))))) (- 1.0 (* v v)))))