Example 2 from Robby

Percentage Accurate: 99.8% → 99.8%
Time: 12.4s
Alternatives: 8
Speedup: N/A×

Specification

?
\[\begin{array}{l} \\ \begin{array}{l} t_1 := \tan^{-1} \left(\frac{\left(-eh\right) \cdot \tan t}{ew}\right)\\ \left|\left(ew \cdot \cos t\right) \cdot \cos t\_1 - \left(eh \cdot \sin t\right) \cdot \sin t\_1\right| \end{array} \end{array} \]
(FPCore (eh ew t)
 :precision binary64
 (let* ((t_1 (atan (/ (* (- eh) (tan t)) ew))))
   (fabs (- (* (* ew (cos t)) (cos t_1)) (* (* eh (sin t)) (sin t_1))))))
double code(double eh, double ew, double t) {
	double t_1 = atan(((-eh * tan(t)) / ew));
	return fabs((((ew * cos(t)) * cos(t_1)) - ((eh * sin(t)) * sin(t_1))));
}
real(8) function code(eh, ew, t)
    real(8), intent (in) :: eh
    real(8), intent (in) :: ew
    real(8), intent (in) :: t
    real(8) :: t_1
    t_1 = atan(((-eh * tan(t)) / ew))
    code = abs((((ew * cos(t)) * cos(t_1)) - ((eh * sin(t)) * sin(t_1))))
end function
public static double code(double eh, double ew, double t) {
	double t_1 = Math.atan(((-eh * Math.tan(t)) / ew));
	return Math.abs((((ew * Math.cos(t)) * Math.cos(t_1)) - ((eh * Math.sin(t)) * Math.sin(t_1))));
}
def code(eh, ew, t):
	t_1 = math.atan(((-eh * math.tan(t)) / ew))
	return math.fabs((((ew * math.cos(t)) * math.cos(t_1)) - ((eh * math.sin(t)) * math.sin(t_1))))
function code(eh, ew, t)
	t_1 = atan(Float64(Float64(Float64(-eh) * tan(t)) / ew))
	return abs(Float64(Float64(Float64(ew * cos(t)) * cos(t_1)) - Float64(Float64(eh * sin(t)) * sin(t_1))))
end
function tmp = code(eh, ew, t)
	t_1 = atan(((-eh * tan(t)) / ew));
	tmp = abs((((ew * cos(t)) * cos(t_1)) - ((eh * sin(t)) * sin(t_1))));
end
code[eh_, ew_, t_] := Block[{t$95$1 = N[ArcTan[N[(N[((-eh) * N[Tan[t], $MachinePrecision]), $MachinePrecision] / ew), $MachinePrecision]], $MachinePrecision]}, N[Abs[N[(N[(N[(ew * N[Cos[t], $MachinePrecision]), $MachinePrecision] * N[Cos[t$95$1], $MachinePrecision]), $MachinePrecision] - N[(N[(eh * N[Sin[t], $MachinePrecision]), $MachinePrecision] * N[Sin[t$95$1], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \tan^{-1} \left(\frac{\left(-eh\right) \cdot \tan t}{ew}\right)\\
\left|\left(ew \cdot \cos t\right) \cdot \cos t\_1 - \left(eh \cdot \sin t\right) \cdot \sin t\_1\right|
\end{array}
\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: 99.8% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \tan^{-1} \left(\frac{\left(-eh\right) \cdot \tan t}{ew}\right)\\ \left|\left(ew \cdot \cos t\right) \cdot \cos t\_1 - \left(eh \cdot \sin t\right) \cdot \sin t\_1\right| \end{array} \end{array} \]
(FPCore (eh ew t)
 :precision binary64
 (let* ((t_1 (atan (/ (* (- eh) (tan t)) ew))))
   (fabs (- (* (* ew (cos t)) (cos t_1)) (* (* eh (sin t)) (sin t_1))))))
double code(double eh, double ew, double t) {
	double t_1 = atan(((-eh * tan(t)) / ew));
	return fabs((((ew * cos(t)) * cos(t_1)) - ((eh * sin(t)) * sin(t_1))));
}
real(8) function code(eh, ew, t)
    real(8), intent (in) :: eh
    real(8), intent (in) :: ew
    real(8), intent (in) :: t
    real(8) :: t_1
    t_1 = atan(((-eh * tan(t)) / ew))
    code = abs((((ew * cos(t)) * cos(t_1)) - ((eh * sin(t)) * sin(t_1))))
end function
public static double code(double eh, double ew, double t) {
	double t_1 = Math.atan(((-eh * Math.tan(t)) / ew));
	return Math.abs((((ew * Math.cos(t)) * Math.cos(t_1)) - ((eh * Math.sin(t)) * Math.sin(t_1))));
}
def code(eh, ew, t):
	t_1 = math.atan(((-eh * math.tan(t)) / ew))
	return math.fabs((((ew * math.cos(t)) * math.cos(t_1)) - ((eh * math.sin(t)) * math.sin(t_1))))
function code(eh, ew, t)
	t_1 = atan(Float64(Float64(Float64(-eh) * tan(t)) / ew))
	return abs(Float64(Float64(Float64(ew * cos(t)) * cos(t_1)) - Float64(Float64(eh * sin(t)) * sin(t_1))))
end
function tmp = code(eh, ew, t)
	t_1 = atan(((-eh * tan(t)) / ew));
	tmp = abs((((ew * cos(t)) * cos(t_1)) - ((eh * sin(t)) * sin(t_1))));
end
code[eh_, ew_, t_] := Block[{t$95$1 = N[ArcTan[N[(N[((-eh) * N[Tan[t], $MachinePrecision]), $MachinePrecision] / ew), $MachinePrecision]], $MachinePrecision]}, N[Abs[N[(N[(N[(ew * N[Cos[t], $MachinePrecision]), $MachinePrecision] * N[Cos[t$95$1], $MachinePrecision]), $MachinePrecision] - N[(N[(eh * N[Sin[t], $MachinePrecision]), $MachinePrecision] * N[Sin[t$95$1], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \tan^{-1} \left(\frac{\left(-eh\right) \cdot \tan t}{ew}\right)\\
\left|\left(ew \cdot \cos t\right) \cdot \cos t\_1 - \left(eh \cdot \sin t\right) \cdot \sin t\_1\right|
\end{array}
\end{array}

Alternative 1: 99.8% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)\\ \left|\mathsf{fma}\left(\cos t\_1 \cdot \cos t, ew, \left(\sin t \cdot eh\right) \cdot \sin t\_1\right)\right| \end{array} \end{array} \]
(FPCore (eh ew t)
 :precision binary64
 (let* ((t_1 (atan (* (/ (tan t) ew) eh))))
   (fabs (fma (* (cos t_1) (cos t)) ew (* (* (sin t) eh) (sin t_1))))))
double code(double eh, double ew, double t) {
	double t_1 = atan(((tan(t) / ew) * eh));
	return fabs(fma((cos(t_1) * cos(t)), ew, ((sin(t) * eh) * sin(t_1))));
}
function code(eh, ew, t)
	t_1 = atan(Float64(Float64(tan(t) / ew) * eh))
	return abs(fma(Float64(cos(t_1) * cos(t)), ew, Float64(Float64(sin(t) * eh) * sin(t_1))))
end
code[eh_, ew_, t_] := Block[{t$95$1 = N[ArcTan[N[(N[(N[Tan[t], $MachinePrecision] / ew), $MachinePrecision] * eh), $MachinePrecision]], $MachinePrecision]}, N[Abs[N[(N[(N[Cos[t$95$1], $MachinePrecision] * N[Cos[t], $MachinePrecision]), $MachinePrecision] * ew + N[(N[(N[Sin[t], $MachinePrecision] * eh), $MachinePrecision] * N[Sin[t$95$1], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)\\
\left|\mathsf{fma}\left(\cos t\_1 \cdot \cos t, ew, \left(\sin t \cdot eh\right) \cdot \sin t\_1\right)\right|
\end{array}
\end{array}
Derivation
  1. Initial program 99.8%

    \[\left|\left(ew \cdot \cos t\right) \cdot \cos \tan^{-1} \left(\frac{\left(-eh\right) \cdot \tan t}{ew}\right) - \left(eh \cdot \sin t\right) \cdot \sin \tan^{-1} \left(\frac{\left(-eh\right) \cdot \tan t}{ew}\right)\right| \]
  2. Add Preprocessing
  3. Applied rewrites99.8%

    \[\leadsto \left|\color{blue}{\mathsf{fma}\left(\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right) \cdot \cos t, ew, \left(\sin t \cdot \left(-eh\right)\right) \cdot \left(-\sin \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)\right)\right)}\right| \]
  4. Final simplification99.8%

    \[\leadsto \left|\mathsf{fma}\left(\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right) \cdot \cos t, ew, \left(\sin t \cdot eh\right) \cdot \sin \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)\right)\right| \]
  5. Add Preprocessing

Alternative 2: 98.9% accurate, 1.1× speedup?

\[\begin{array}{l} \\ \left|\mathsf{fma}\left(\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right) \cdot \cos t, ew, \left(\sin t \cdot eh\right) \cdot \sin \tan^{-1} \left(\frac{t}{ew} \cdot eh\right)\right)\right| \end{array} \]
(FPCore (eh ew t)
 :precision binary64
 (fabs
  (fma
   (* (cos (atan (* (/ (tan t) ew) eh))) (cos t))
   ew
   (* (* (sin t) eh) (sin (atan (* (/ t ew) eh)))))))
double code(double eh, double ew, double t) {
	return fabs(fma((cos(atan(((tan(t) / ew) * eh))) * cos(t)), ew, ((sin(t) * eh) * sin(atan(((t / ew) * eh))))));
}
function code(eh, ew, t)
	return abs(fma(Float64(cos(atan(Float64(Float64(tan(t) / ew) * eh))) * cos(t)), ew, Float64(Float64(sin(t) * eh) * sin(atan(Float64(Float64(t / ew) * eh))))))
end
code[eh_, ew_, t_] := N[Abs[N[(N[(N[Cos[N[ArcTan[N[(N[(N[Tan[t], $MachinePrecision] / ew), $MachinePrecision] * eh), $MachinePrecision]], $MachinePrecision]], $MachinePrecision] * N[Cos[t], $MachinePrecision]), $MachinePrecision] * ew + N[(N[(N[Sin[t], $MachinePrecision] * eh), $MachinePrecision] * N[Sin[N[ArcTan[N[(N[(t / ew), $MachinePrecision] * eh), $MachinePrecision]], $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]
\begin{array}{l}

\\
\left|\mathsf{fma}\left(\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right) \cdot \cos t, ew, \left(\sin t \cdot eh\right) \cdot \sin \tan^{-1} \left(\frac{t}{ew} \cdot eh\right)\right)\right|
\end{array}
Derivation
  1. Initial program 99.8%

    \[\left|\left(ew \cdot \cos t\right) \cdot \cos \tan^{-1} \left(\frac{\left(-eh\right) \cdot \tan t}{ew}\right) - \left(eh \cdot \sin t\right) \cdot \sin \tan^{-1} \left(\frac{\left(-eh\right) \cdot \tan t}{ew}\right)\right| \]
  2. Add Preprocessing
  3. Applied rewrites99.8%

    \[\leadsto \left|\color{blue}{\mathsf{fma}\left(\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right) \cdot \cos t, ew, \left(\sin t \cdot \left(-eh\right)\right) \cdot \left(-\sin \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)\right)\right)}\right| \]
  4. Taylor expanded in t around 0

    \[\leadsto \left|\mathsf{fma}\left(\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right) \cdot \cos t, ew, \left(\sin t \cdot \left(-eh\right)\right) \cdot \left(-\sin \tan^{-1} \left(\color{blue}{\frac{t}{ew}} \cdot eh\right)\right)\right)\right| \]
  5. Step-by-step derivation
    1. lower-/.f6498.9

      \[\leadsto \left|\mathsf{fma}\left(\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right) \cdot \cos t, ew, \left(\sin t \cdot \left(-eh\right)\right) \cdot \left(-\sin \tan^{-1} \left(\color{blue}{\frac{t}{ew}} \cdot eh\right)\right)\right)\right| \]
  6. Applied rewrites98.9%

    \[\leadsto \left|\mathsf{fma}\left(\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right) \cdot \cos t, ew, \left(\sin t \cdot \left(-eh\right)\right) \cdot \left(-\sin \tan^{-1} \left(\color{blue}{\frac{t}{ew}} \cdot eh\right)\right)\right)\right| \]
  7. Final simplification98.9%

    \[\leadsto \left|\mathsf{fma}\left(\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right) \cdot \cos t, ew, \left(\sin t \cdot eh\right) \cdot \sin \tan^{-1} \left(\frac{t}{ew} \cdot eh\right)\right)\right| \]
  8. Add Preprocessing

Alternative 3: 85.2% accurate, 1.3× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \frac{\tan t}{ew}\\ \mathbf{if}\;eh \leq -7.7 \cdot 10^{+136} \lor \neg \left(eh \leq 2.4 \cdot 10^{+196}\right):\\ \;\;\;\;\left|\left(\sin t \cdot \left(-eh\right)\right) \cdot \sin \tan^{-1} \left(\frac{-\sin t}{ew} \cdot \frac{eh}{\cos t}\right)\right|\\ \mathbf{else}:\\ \;\;\;\;\left|\left(\left(t\_1 \cdot eh\right) \cdot eh\right) \cdot \sin t + \cos t \cdot ew\right| \cdot {\left({\left(eh \cdot t\_1\right)}^{2} + 1\right)}^{-0.5}\\ \end{array} \end{array} \]
(FPCore (eh ew t)
 :precision binary64
 (let* ((t_1 (/ (tan t) ew)))
   (if (or (<= eh -7.7e+136) (not (<= eh 2.4e+196)))
     (fabs
      (*
       (* (sin t) (- eh))
       (sin (atan (* (/ (- (sin t)) ew) (/ eh (cos t)))))))
     (*
      (fabs (+ (* (* (* t_1 eh) eh) (sin t)) (* (cos t) ew)))
      (pow (+ (pow (* eh t_1) 2.0) 1.0) -0.5)))))
double code(double eh, double ew, double t) {
	double t_1 = tan(t) / ew;
	double tmp;
	if ((eh <= -7.7e+136) || !(eh <= 2.4e+196)) {
		tmp = fabs(((sin(t) * -eh) * sin(atan(((-sin(t) / ew) * (eh / cos(t)))))));
	} else {
		tmp = fabs(((((t_1 * eh) * eh) * sin(t)) + (cos(t) * ew))) * pow((pow((eh * t_1), 2.0) + 1.0), -0.5);
	}
	return tmp;
}
real(8) function code(eh, ew, t)
    real(8), intent (in) :: eh
    real(8), intent (in) :: ew
    real(8), intent (in) :: t
    real(8) :: t_1
    real(8) :: tmp
    t_1 = tan(t) / ew
    if ((eh <= (-7.7d+136)) .or. (.not. (eh <= 2.4d+196))) then
        tmp = abs(((sin(t) * -eh) * sin(atan(((-sin(t) / ew) * (eh / cos(t)))))))
    else
        tmp = abs(((((t_1 * eh) * eh) * sin(t)) + (cos(t) * ew))) * ((((eh * t_1) ** 2.0d0) + 1.0d0) ** (-0.5d0))
    end if
    code = tmp
end function
public static double code(double eh, double ew, double t) {
	double t_1 = Math.tan(t) / ew;
	double tmp;
	if ((eh <= -7.7e+136) || !(eh <= 2.4e+196)) {
		tmp = Math.abs(((Math.sin(t) * -eh) * Math.sin(Math.atan(((-Math.sin(t) / ew) * (eh / Math.cos(t)))))));
	} else {
		tmp = Math.abs(((((t_1 * eh) * eh) * Math.sin(t)) + (Math.cos(t) * ew))) * Math.pow((Math.pow((eh * t_1), 2.0) + 1.0), -0.5);
	}
	return tmp;
}
def code(eh, ew, t):
	t_1 = math.tan(t) / ew
	tmp = 0
	if (eh <= -7.7e+136) or not (eh <= 2.4e+196):
		tmp = math.fabs(((math.sin(t) * -eh) * math.sin(math.atan(((-math.sin(t) / ew) * (eh / math.cos(t)))))))
	else:
		tmp = math.fabs(((((t_1 * eh) * eh) * math.sin(t)) + (math.cos(t) * ew))) * math.pow((math.pow((eh * t_1), 2.0) + 1.0), -0.5)
	return tmp
function code(eh, ew, t)
	t_1 = Float64(tan(t) / ew)
	tmp = 0.0
	if ((eh <= -7.7e+136) || !(eh <= 2.4e+196))
		tmp = abs(Float64(Float64(sin(t) * Float64(-eh)) * sin(atan(Float64(Float64(Float64(-sin(t)) / ew) * Float64(eh / cos(t)))))));
	else
		tmp = Float64(abs(Float64(Float64(Float64(Float64(t_1 * eh) * eh) * sin(t)) + Float64(cos(t) * ew))) * (Float64((Float64(eh * t_1) ^ 2.0) + 1.0) ^ -0.5));
	end
	return tmp
end
function tmp_2 = code(eh, ew, t)
	t_1 = tan(t) / ew;
	tmp = 0.0;
	if ((eh <= -7.7e+136) || ~((eh <= 2.4e+196)))
		tmp = abs(((sin(t) * -eh) * sin(atan(((-sin(t) / ew) * (eh / cos(t)))))));
	else
		tmp = abs(((((t_1 * eh) * eh) * sin(t)) + (cos(t) * ew))) * ((((eh * t_1) ^ 2.0) + 1.0) ^ -0.5);
	end
	tmp_2 = tmp;
end
code[eh_, ew_, t_] := Block[{t$95$1 = N[(N[Tan[t], $MachinePrecision] / ew), $MachinePrecision]}, If[Or[LessEqual[eh, -7.7e+136], N[Not[LessEqual[eh, 2.4e+196]], $MachinePrecision]], N[Abs[N[(N[(N[Sin[t], $MachinePrecision] * (-eh)), $MachinePrecision] * N[Sin[N[ArcTan[N[(N[((-N[Sin[t], $MachinePrecision]) / ew), $MachinePrecision] * N[(eh / N[Cos[t], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]], $MachinePrecision]), $MachinePrecision]], $MachinePrecision], N[(N[Abs[N[(N[(N[(N[(t$95$1 * eh), $MachinePrecision] * eh), $MachinePrecision] * N[Sin[t], $MachinePrecision]), $MachinePrecision] + N[(N[Cos[t], $MachinePrecision] * ew), $MachinePrecision]), $MachinePrecision]], $MachinePrecision] * N[Power[N[(N[Power[N[(eh * t$95$1), $MachinePrecision], 2.0], $MachinePrecision] + 1.0), $MachinePrecision], -0.5], $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \frac{\tan t}{ew}\\
\mathbf{if}\;eh \leq -7.7 \cdot 10^{+136} \lor \neg \left(eh \leq 2.4 \cdot 10^{+196}\right):\\
\;\;\;\;\left|\left(\sin t \cdot \left(-eh\right)\right) \cdot \sin \tan^{-1} \left(\frac{-\sin t}{ew} \cdot \frac{eh}{\cos t}\right)\right|\\

\mathbf{else}:\\
\;\;\;\;\left|\left(\left(t\_1 \cdot eh\right) \cdot eh\right) \cdot \sin t + \cos t \cdot ew\right| \cdot {\left({\left(eh \cdot t\_1\right)}^{2} + 1\right)}^{-0.5}\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if eh < -7.7000000000000003e136 or 2.4e196 < eh

    1. Initial program 99.8%

      \[\left|\left(ew \cdot \cos t\right) \cdot \cos \tan^{-1} \left(\frac{\left(-eh\right) \cdot \tan t}{ew}\right) - \left(eh \cdot \sin t\right) \cdot \sin \tan^{-1} \left(\frac{\left(-eh\right) \cdot \tan t}{ew}\right)\right| \]
    2. Add Preprocessing
    3. Taylor expanded in eh around inf

      \[\leadsto \left|\color{blue}{-1 \cdot \left(eh \cdot \left(\sin t \cdot \sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)\right)\right)}\right| \]
    4. Step-by-step derivation
      1. associate-*r*N/A

        \[\leadsto \left|-1 \cdot \color{blue}{\left(\left(eh \cdot \sin t\right) \cdot \sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)\right)}\right| \]
      2. associate-*r*N/A

        \[\leadsto \left|\color{blue}{\left(-1 \cdot \left(eh \cdot \sin t\right)\right) \cdot \sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)}\right| \]
      3. lower-*.f64N/A

        \[\leadsto \left|\color{blue}{\left(-1 \cdot \left(eh \cdot \sin t\right)\right) \cdot \sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)}\right| \]
      4. *-commutativeN/A

        \[\leadsto \left|\left(-1 \cdot \color{blue}{\left(\sin t \cdot eh\right)}\right) \cdot \sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)\right| \]
      5. associate-*r*N/A

        \[\leadsto \left|\color{blue}{\left(\left(-1 \cdot \sin t\right) \cdot eh\right)} \cdot \sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)\right| \]
      6. neg-mul-1N/A

        \[\leadsto \left|\left(\color{blue}{\left(\mathsf{neg}\left(\sin t\right)\right)} \cdot eh\right) \cdot \sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)\right| \]
      7. lower-*.f64N/A

        \[\leadsto \left|\color{blue}{\left(\left(\mathsf{neg}\left(\sin t\right)\right) \cdot eh\right)} \cdot \sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)\right| \]
      8. lower-neg.f64N/A

        \[\leadsto \left|\left(\color{blue}{\left(-\sin t\right)} \cdot eh\right) \cdot \sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)\right| \]
      9. lower-sin.f64N/A

        \[\leadsto \left|\left(\left(-\color{blue}{\sin t}\right) \cdot eh\right) \cdot \sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)\right| \]
      10. lower-sin.f64N/A

        \[\leadsto \left|\left(\left(-\sin t\right) \cdot eh\right) \cdot \color{blue}{\sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)}\right| \]
      11. lower-atan.f64N/A

        \[\leadsto \left|\left(\left(-\sin t\right) \cdot eh\right) \cdot \sin \color{blue}{\tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)}\right| \]
      12. mul-1-negN/A

        \[\leadsto \left|\left(\left(-\sin t\right) \cdot eh\right) \cdot \sin \tan^{-1} \color{blue}{\left(\mathsf{neg}\left(\frac{eh \cdot \sin t}{ew \cdot \cos t}\right)\right)}\right| \]
      13. distribute-neg-frac2N/A

        \[\leadsto \left|\left(\left(-\sin t\right) \cdot eh\right) \cdot \sin \tan^{-1} \color{blue}{\left(\frac{eh \cdot \sin t}{\mathsf{neg}\left(ew \cdot \cos t\right)}\right)}\right| \]
      14. *-commutativeN/A

        \[\leadsto \left|\left(\left(-\sin t\right) \cdot eh\right) \cdot \sin \tan^{-1} \left(\frac{\color{blue}{\sin t \cdot eh}}{\mathsf{neg}\left(ew \cdot \cos t\right)}\right)\right| \]
      15. distribute-lft-neg-inN/A

        \[\leadsto \left|\left(\left(-\sin t\right) \cdot eh\right) \cdot \sin \tan^{-1} \left(\frac{\sin t \cdot eh}{\color{blue}{\left(\mathsf{neg}\left(ew\right)\right) \cdot \cos t}}\right)\right| \]
      16. mul-1-negN/A

        \[\leadsto \left|\left(\left(-\sin t\right) \cdot eh\right) \cdot \sin \tan^{-1} \left(\frac{\sin t \cdot eh}{\color{blue}{\left(-1 \cdot ew\right)} \cdot \cos t}\right)\right| \]
    5. Applied rewrites80.1%

      \[\leadsto \left|\color{blue}{\left(\left(-\sin t\right) \cdot eh\right) \cdot \sin \tan^{-1} \left(\frac{-\sin t}{ew} \cdot \frac{eh}{\cos t}\right)}\right| \]

    if -7.7000000000000003e136 < eh < 2.4e196

    1. Initial program 99.8%

      \[\left|\left(ew \cdot \cos t\right) \cdot \cos \tan^{-1} \left(\frac{\left(-eh\right) \cdot \tan t}{ew}\right) - \left(eh \cdot \sin t\right) \cdot \sin \tan^{-1} \left(\frac{\left(-eh\right) \cdot \tan t}{ew}\right)\right| \]
    2. Add Preprocessing
    3. Applied rewrites99.8%

      \[\leadsto \left|\color{blue}{\mathsf{fma}\left(\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right) \cdot \cos t, ew, \left(\sin t \cdot \left(-eh\right)\right) \cdot \left(-\sin \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)\right)\right)}\right| \]
    4. Applied rewrites79.9%

      \[\leadsto \color{blue}{\left|\cos t \cdot ew - \left(\left(\frac{\tan t}{ew} \cdot eh\right) \cdot eh\right) \cdot \left(-\sin t\right)\right| \cdot \cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)} \]
    5. Step-by-step derivation
      1. lift-cos.f64N/A

        \[\leadsto \left|\cos t \cdot ew - \left(\left(\frac{\tan t}{ew} \cdot eh\right) \cdot eh\right) \cdot \left(-\sin t\right)\right| \cdot \color{blue}{\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)} \]
      2. lift-atan.f64N/A

        \[\leadsto \left|\cos t \cdot ew - \left(\left(\frac{\tan t}{ew} \cdot eh\right) \cdot eh\right) \cdot \left(-\sin t\right)\right| \cdot \cos \color{blue}{\tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)} \]
      3. cos-atanN/A

        \[\leadsto \left|\cos t \cdot ew - \left(\left(\frac{\tan t}{ew} \cdot eh\right) \cdot eh\right) \cdot \left(-\sin t\right)\right| \cdot \color{blue}{\frac{1}{\sqrt{1 + \left(\frac{\tan t}{ew} \cdot eh\right) \cdot \left(\frac{\tan t}{ew} \cdot eh\right)}}} \]
      4. inv-powN/A

        \[\leadsto \left|\cos t \cdot ew - \left(\left(\frac{\tan t}{ew} \cdot eh\right) \cdot eh\right) \cdot \left(-\sin t\right)\right| \cdot \color{blue}{{\left(\sqrt{1 + \left(\frac{\tan t}{ew} \cdot eh\right) \cdot \left(\frac{\tan t}{ew} \cdot eh\right)}\right)}^{-1}} \]
      5. sqrt-pow2N/A

        \[\leadsto \left|\cos t \cdot ew - \left(\left(\frac{\tan t}{ew} \cdot eh\right) \cdot eh\right) \cdot \left(-\sin t\right)\right| \cdot \color{blue}{{\left(1 + \left(\frac{\tan t}{ew} \cdot eh\right) \cdot \left(\frac{\tan t}{ew} \cdot eh\right)\right)}^{\left(\frac{-1}{2}\right)}} \]
      6. lower-pow.f64N/A

        \[\leadsto \left|\cos t \cdot ew - \left(\left(\frac{\tan t}{ew} \cdot eh\right) \cdot eh\right) \cdot \left(-\sin t\right)\right| \cdot \color{blue}{{\left(1 + \left(\frac{\tan t}{ew} \cdot eh\right) \cdot \left(\frac{\tan t}{ew} \cdot eh\right)\right)}^{\left(\frac{-1}{2}\right)}} \]
      7. +-commutativeN/A

        \[\leadsto \left|\cos t \cdot ew - \left(\left(\frac{\tan t}{ew} \cdot eh\right) \cdot eh\right) \cdot \left(-\sin t\right)\right| \cdot {\color{blue}{\left(\left(\frac{\tan t}{ew} \cdot eh\right) \cdot \left(\frac{\tan t}{ew} \cdot eh\right) + 1\right)}}^{\left(\frac{-1}{2}\right)} \]
      8. lower-+.f64N/A

        \[\leadsto \left|\cos t \cdot ew - \left(\left(\frac{\tan t}{ew} \cdot eh\right) \cdot eh\right) \cdot \left(-\sin t\right)\right| \cdot {\color{blue}{\left(\left(\frac{\tan t}{ew} \cdot eh\right) \cdot \left(\frac{\tan t}{ew} \cdot eh\right) + 1\right)}}^{\left(\frac{-1}{2}\right)} \]
      9. pow2N/A

        \[\leadsto \left|\cos t \cdot ew - \left(\left(\frac{\tan t}{ew} \cdot eh\right) \cdot eh\right) \cdot \left(-\sin t\right)\right| \cdot {\left(\color{blue}{{\left(\frac{\tan t}{ew} \cdot eh\right)}^{2}} + 1\right)}^{\left(\frac{-1}{2}\right)} \]
      10. lower-pow.f64N/A

        \[\leadsto \left|\cos t \cdot ew - \left(\left(\frac{\tan t}{ew} \cdot eh\right) \cdot eh\right) \cdot \left(-\sin t\right)\right| \cdot {\left(\color{blue}{{\left(\frac{\tan t}{ew} \cdot eh\right)}^{2}} + 1\right)}^{\left(\frac{-1}{2}\right)} \]
      11. lift-*.f64N/A

        \[\leadsto \left|\cos t \cdot ew - \left(\left(\frac{\tan t}{ew} \cdot eh\right) \cdot eh\right) \cdot \left(-\sin t\right)\right| \cdot {\left({\color{blue}{\left(\frac{\tan t}{ew} \cdot eh\right)}}^{2} + 1\right)}^{\left(\frac{-1}{2}\right)} \]
      12. *-commutativeN/A

        \[\leadsto \left|\cos t \cdot ew - \left(\left(\frac{\tan t}{ew} \cdot eh\right) \cdot eh\right) \cdot \left(-\sin t\right)\right| \cdot {\left({\color{blue}{\left(eh \cdot \frac{\tan t}{ew}\right)}}^{2} + 1\right)}^{\left(\frac{-1}{2}\right)} \]
      13. lower-*.f64N/A

        \[\leadsto \left|\cos t \cdot ew - \left(\left(\frac{\tan t}{ew} \cdot eh\right) \cdot eh\right) \cdot \left(-\sin t\right)\right| \cdot {\left({\color{blue}{\left(eh \cdot \frac{\tan t}{ew}\right)}}^{2} + 1\right)}^{\left(\frac{-1}{2}\right)} \]
      14. metadata-eval91.5

        \[\leadsto \left|\cos t \cdot ew - \left(\left(\frac{\tan t}{ew} \cdot eh\right) \cdot eh\right) \cdot \left(-\sin t\right)\right| \cdot {\left({\left(eh \cdot \frac{\tan t}{ew}\right)}^{2} + 1\right)}^{\color{blue}{-0.5}} \]
    6. Applied rewrites91.5%

      \[\leadsto \left|\cos t \cdot ew - \left(\left(\frac{\tan t}{ew} \cdot eh\right) \cdot eh\right) \cdot \left(-\sin t\right)\right| \cdot \color{blue}{{\left({\left(eh \cdot \frac{\tan t}{ew}\right)}^{2} + 1\right)}^{-0.5}} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification89.1%

    \[\leadsto \begin{array}{l} \mathbf{if}\;eh \leq -7.7 \cdot 10^{+136} \lor \neg \left(eh \leq 2.4 \cdot 10^{+196}\right):\\ \;\;\;\;\left|\left(\sin t \cdot \left(-eh\right)\right) \cdot \sin \tan^{-1} \left(\frac{-\sin t}{ew} \cdot \frac{eh}{\cos t}\right)\right|\\ \mathbf{else}:\\ \;\;\;\;\left|\left(\left(\frac{\tan t}{ew} \cdot eh\right) \cdot eh\right) \cdot \sin t + \cos t \cdot ew\right| \cdot {\left({\left(eh \cdot \frac{\tan t}{ew}\right)}^{2} + 1\right)}^{-0.5}\\ \end{array} \]
  5. Add Preprocessing

Alternative 4: 75.1% accurate, 1.3× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \frac{\tan t}{ew}\\ \mathbf{if}\;eh \leq -1.2 \cdot 10^{+95} \lor \neg \left(eh \leq 2.1 \cdot 10^{+196}\right):\\ \;\;\;\;\left|\left(\sin t \cdot \left(-eh\right)\right) \cdot \sin \tan^{-1} \left(\frac{-\sin t}{ew} \cdot \frac{eh}{\cos t}\right)\right|\\ \mathbf{else}:\\ \;\;\;\;\left|\mathsf{fma}\left(\left(eh \cdot t\_1\right) \cdot eh, \sin t, \cos t \cdot ew\right)\right| \cdot \cos \tan^{-1} \left(t\_1 \cdot eh\right)\\ \end{array} \end{array} \]
(FPCore (eh ew t)
 :precision binary64
 (let* ((t_1 (/ (tan t) ew)))
   (if (or (<= eh -1.2e+95) (not (<= eh 2.1e+196)))
     (fabs
      (*
       (* (sin t) (- eh))
       (sin (atan (* (/ (- (sin t)) ew) (/ eh (cos t)))))))
     (*
      (fabs (fma (* (* eh t_1) eh) (sin t) (* (cos t) ew)))
      (cos (atan (* t_1 eh)))))))
double code(double eh, double ew, double t) {
	double t_1 = tan(t) / ew;
	double tmp;
	if ((eh <= -1.2e+95) || !(eh <= 2.1e+196)) {
		tmp = fabs(((sin(t) * -eh) * sin(atan(((-sin(t) / ew) * (eh / cos(t)))))));
	} else {
		tmp = fabs(fma(((eh * t_1) * eh), sin(t), (cos(t) * ew))) * cos(atan((t_1 * eh)));
	}
	return tmp;
}
function code(eh, ew, t)
	t_1 = Float64(tan(t) / ew)
	tmp = 0.0
	if ((eh <= -1.2e+95) || !(eh <= 2.1e+196))
		tmp = abs(Float64(Float64(sin(t) * Float64(-eh)) * sin(atan(Float64(Float64(Float64(-sin(t)) / ew) * Float64(eh / cos(t)))))));
	else
		tmp = Float64(abs(fma(Float64(Float64(eh * t_1) * eh), sin(t), Float64(cos(t) * ew))) * cos(atan(Float64(t_1 * eh))));
	end
	return tmp
end
code[eh_, ew_, t_] := Block[{t$95$1 = N[(N[Tan[t], $MachinePrecision] / ew), $MachinePrecision]}, If[Or[LessEqual[eh, -1.2e+95], N[Not[LessEqual[eh, 2.1e+196]], $MachinePrecision]], N[Abs[N[(N[(N[Sin[t], $MachinePrecision] * (-eh)), $MachinePrecision] * N[Sin[N[ArcTan[N[(N[((-N[Sin[t], $MachinePrecision]) / ew), $MachinePrecision] * N[(eh / N[Cos[t], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]], $MachinePrecision]), $MachinePrecision]], $MachinePrecision], N[(N[Abs[N[(N[(N[(eh * t$95$1), $MachinePrecision] * eh), $MachinePrecision] * N[Sin[t], $MachinePrecision] + N[(N[Cos[t], $MachinePrecision] * ew), $MachinePrecision]), $MachinePrecision]], $MachinePrecision] * N[Cos[N[ArcTan[N[(t$95$1 * eh), $MachinePrecision]], $MachinePrecision]], $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \frac{\tan t}{ew}\\
\mathbf{if}\;eh \leq -1.2 \cdot 10^{+95} \lor \neg \left(eh \leq 2.1 \cdot 10^{+196}\right):\\
\;\;\;\;\left|\left(\sin t \cdot \left(-eh\right)\right) \cdot \sin \tan^{-1} \left(\frac{-\sin t}{ew} \cdot \frac{eh}{\cos t}\right)\right|\\

\mathbf{else}:\\
\;\;\;\;\left|\mathsf{fma}\left(\left(eh \cdot t\_1\right) \cdot eh, \sin t, \cos t \cdot ew\right)\right| \cdot \cos \tan^{-1} \left(t\_1 \cdot eh\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if eh < -1.2e95 or 2.10000000000000015e196 < eh

    1. Initial program 99.8%

      \[\left|\left(ew \cdot \cos t\right) \cdot \cos \tan^{-1} \left(\frac{\left(-eh\right) \cdot \tan t}{ew}\right) - \left(eh \cdot \sin t\right) \cdot \sin \tan^{-1} \left(\frac{\left(-eh\right) \cdot \tan t}{ew}\right)\right| \]
    2. Add Preprocessing
    3. Taylor expanded in eh around inf

      \[\leadsto \left|\color{blue}{-1 \cdot \left(eh \cdot \left(\sin t \cdot \sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)\right)\right)}\right| \]
    4. Step-by-step derivation
      1. associate-*r*N/A

        \[\leadsto \left|-1 \cdot \color{blue}{\left(\left(eh \cdot \sin t\right) \cdot \sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)\right)}\right| \]
      2. associate-*r*N/A

        \[\leadsto \left|\color{blue}{\left(-1 \cdot \left(eh \cdot \sin t\right)\right) \cdot \sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)}\right| \]
      3. lower-*.f64N/A

        \[\leadsto \left|\color{blue}{\left(-1 \cdot \left(eh \cdot \sin t\right)\right) \cdot \sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)}\right| \]
      4. *-commutativeN/A

        \[\leadsto \left|\left(-1 \cdot \color{blue}{\left(\sin t \cdot eh\right)}\right) \cdot \sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)\right| \]
      5. associate-*r*N/A

        \[\leadsto \left|\color{blue}{\left(\left(-1 \cdot \sin t\right) \cdot eh\right)} \cdot \sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)\right| \]
      6. neg-mul-1N/A

        \[\leadsto \left|\left(\color{blue}{\left(\mathsf{neg}\left(\sin t\right)\right)} \cdot eh\right) \cdot \sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)\right| \]
      7. lower-*.f64N/A

        \[\leadsto \left|\color{blue}{\left(\left(\mathsf{neg}\left(\sin t\right)\right) \cdot eh\right)} \cdot \sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)\right| \]
      8. lower-neg.f64N/A

        \[\leadsto \left|\left(\color{blue}{\left(-\sin t\right)} \cdot eh\right) \cdot \sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)\right| \]
      9. lower-sin.f64N/A

        \[\leadsto \left|\left(\left(-\color{blue}{\sin t}\right) \cdot eh\right) \cdot \sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)\right| \]
      10. lower-sin.f64N/A

        \[\leadsto \left|\left(\left(-\sin t\right) \cdot eh\right) \cdot \color{blue}{\sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)}\right| \]
      11. lower-atan.f64N/A

        \[\leadsto \left|\left(\left(-\sin t\right) \cdot eh\right) \cdot \sin \color{blue}{\tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)}\right| \]
      12. mul-1-negN/A

        \[\leadsto \left|\left(\left(-\sin t\right) \cdot eh\right) \cdot \sin \tan^{-1} \color{blue}{\left(\mathsf{neg}\left(\frac{eh \cdot \sin t}{ew \cdot \cos t}\right)\right)}\right| \]
      13. distribute-neg-frac2N/A

        \[\leadsto \left|\left(\left(-\sin t\right) \cdot eh\right) \cdot \sin \tan^{-1} \color{blue}{\left(\frac{eh \cdot \sin t}{\mathsf{neg}\left(ew \cdot \cos t\right)}\right)}\right| \]
      14. *-commutativeN/A

        \[\leadsto \left|\left(\left(-\sin t\right) \cdot eh\right) \cdot \sin \tan^{-1} \left(\frac{\color{blue}{\sin t \cdot eh}}{\mathsf{neg}\left(ew \cdot \cos t\right)}\right)\right| \]
      15. distribute-lft-neg-inN/A

        \[\leadsto \left|\left(\left(-\sin t\right) \cdot eh\right) \cdot \sin \tan^{-1} \left(\frac{\sin t \cdot eh}{\color{blue}{\left(\mathsf{neg}\left(ew\right)\right) \cdot \cos t}}\right)\right| \]
      16. mul-1-negN/A

        \[\leadsto \left|\left(\left(-\sin t\right) \cdot eh\right) \cdot \sin \tan^{-1} \left(\frac{\sin t \cdot eh}{\color{blue}{\left(-1 \cdot ew\right)} \cdot \cos t}\right)\right| \]
    5. Applied rewrites78.0%

      \[\leadsto \left|\color{blue}{\left(\left(-\sin t\right) \cdot eh\right) \cdot \sin \tan^{-1} \left(\frac{-\sin t}{ew} \cdot \frac{eh}{\cos t}\right)}\right| \]

    if -1.2e95 < eh < 2.10000000000000015e196

    1. Initial program 99.8%

      \[\left|\left(ew \cdot \cos t\right) \cdot \cos \tan^{-1} \left(\frac{\left(-eh\right) \cdot \tan t}{ew}\right) - \left(eh \cdot \sin t\right) \cdot \sin \tan^{-1} \left(\frac{\left(-eh\right) \cdot \tan t}{ew}\right)\right| \]
    2. Add Preprocessing
    3. Applied rewrites99.8%

      \[\leadsto \left|\color{blue}{\mathsf{fma}\left(\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right) \cdot \cos t, ew, \left(\sin t \cdot \left(-eh\right)\right) \cdot \left(-\sin \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)\right)\right)}\right| \]
    4. Applied rewrites81.5%

      \[\leadsto \color{blue}{\left|\cos t \cdot ew - \left(\left(\frac{\tan t}{ew} \cdot eh\right) \cdot eh\right) \cdot \left(-\sin t\right)\right| \cdot \cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)} \]
    5. Step-by-step derivation
      1. lift--.f64N/A

        \[\leadsto \left|\color{blue}{\cos t \cdot ew - \left(\left(\frac{\tan t}{ew} \cdot eh\right) \cdot eh\right) \cdot \left(-\sin t\right)}\right| \cdot \cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right) \]
      2. sub-negN/A

        \[\leadsto \left|\color{blue}{\cos t \cdot ew + \left(\mathsf{neg}\left(\left(\left(\frac{\tan t}{ew} \cdot eh\right) \cdot eh\right) \cdot \left(-\sin t\right)\right)\right)}\right| \cdot \cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right) \]
      3. lift-*.f64N/A

        \[\leadsto \left|\cos t \cdot ew + \left(\mathsf{neg}\left(\color{blue}{\left(\left(\frac{\tan t}{ew} \cdot eh\right) \cdot eh\right) \cdot \left(-\sin t\right)}\right)\right)\right| \cdot \cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right) \]
      4. lift-neg.f64N/A

        \[\leadsto \left|\cos t \cdot ew + \left(\mathsf{neg}\left(\left(\left(\frac{\tan t}{ew} \cdot eh\right) \cdot eh\right) \cdot \color{blue}{\left(\mathsf{neg}\left(\sin t\right)\right)}\right)\right)\right| \cdot \cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right) \]
      5. distribute-rgt-neg-outN/A

        \[\leadsto \left|\cos t \cdot ew + \left(\mathsf{neg}\left(\color{blue}{\left(\mathsf{neg}\left(\left(\left(\frac{\tan t}{ew} \cdot eh\right) \cdot eh\right) \cdot \sin t\right)\right)}\right)\right)\right| \cdot \cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right) \]
      6. remove-double-negN/A

        \[\leadsto \left|\cos t \cdot ew + \color{blue}{\left(\left(\frac{\tan t}{ew} \cdot eh\right) \cdot eh\right) \cdot \sin t}\right| \cdot \cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right) \]
      7. +-commutativeN/A

        \[\leadsto \left|\color{blue}{\left(\left(\frac{\tan t}{ew} \cdot eh\right) \cdot eh\right) \cdot \sin t + \cos t \cdot ew}\right| \cdot \cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right) \]
      8. lower-fma.f6481.5

        \[\leadsto \left|\color{blue}{\mathsf{fma}\left(\left(\frac{\tan t}{ew} \cdot eh\right) \cdot eh, \sin t, \cos t \cdot ew\right)}\right| \cdot \cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right) \]
      9. lift-*.f64N/A

        \[\leadsto \left|\mathsf{fma}\left(\color{blue}{\left(\frac{\tan t}{ew} \cdot eh\right)} \cdot eh, \sin t, \cos t \cdot ew\right)\right| \cdot \cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right) \]
      10. *-commutativeN/A

        \[\leadsto \left|\mathsf{fma}\left(\color{blue}{\left(eh \cdot \frac{\tan t}{ew}\right)} \cdot eh, \sin t, \cos t \cdot ew\right)\right| \cdot \cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right) \]
      11. lower-*.f6481.5

        \[\leadsto \left|\mathsf{fma}\left(\color{blue}{\left(eh \cdot \frac{\tan t}{ew}\right)} \cdot eh, \sin t, \cos t \cdot ew\right)\right| \cdot \cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right) \]
    6. Applied rewrites81.5%

      \[\leadsto \left|\color{blue}{\mathsf{fma}\left(\left(eh \cdot \frac{\tan t}{ew}\right) \cdot eh, \sin t, \cos t \cdot ew\right)}\right| \cdot \cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right) \]
  3. Recombined 2 regimes into one program.
  4. Final simplification80.6%

    \[\leadsto \begin{array}{l} \mathbf{if}\;eh \leq -1.2 \cdot 10^{+95} \lor \neg \left(eh \leq 2.1 \cdot 10^{+196}\right):\\ \;\;\;\;\left|\left(\sin t \cdot \left(-eh\right)\right) \cdot \sin \tan^{-1} \left(\frac{-\sin t}{ew} \cdot \frac{eh}{\cos t}\right)\right|\\ \mathbf{else}:\\ \;\;\;\;\left|\mathsf{fma}\left(\left(eh \cdot \frac{\tan t}{ew}\right) \cdot eh, \sin t, \cos t \cdot ew\right)\right| \cdot \cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 5: 73.8% accurate, 1.6× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;eh \leq -1.2 \cdot 10^{+95} \lor \neg \left(eh \leq 2.1 \cdot 10^{+196}\right):\\ \;\;\;\;\left|\left(\sin t \cdot \left(-eh\right)\right) \cdot \sin \tan^{-1} \left(\frac{-\sin t}{ew} \cdot \frac{eh}{\cos t}\right)\right|\\ \mathbf{else}:\\ \;\;\;\;\left|\frac{\left(-ew\right) \cdot \cos t}{{\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)}^{-1}}\right|\\ \end{array} \end{array} \]
(FPCore (eh ew t)
 :precision binary64
 (if (or (<= eh -1.2e+95) (not (<= eh 2.1e+196)))
   (fabs
    (* (* (sin t) (- eh)) (sin (atan (* (/ (- (sin t)) ew) (/ eh (cos t)))))))
   (fabs
    (/ (* (- ew) (cos t)) (pow (cos (atan (* (/ (tan t) ew) eh))) -1.0)))))
double code(double eh, double ew, double t) {
	double tmp;
	if ((eh <= -1.2e+95) || !(eh <= 2.1e+196)) {
		tmp = fabs(((sin(t) * -eh) * sin(atan(((-sin(t) / ew) * (eh / cos(t)))))));
	} else {
		tmp = fabs(((-ew * cos(t)) / pow(cos(atan(((tan(t) / ew) * eh))), -1.0)));
	}
	return tmp;
}
real(8) function code(eh, ew, t)
    real(8), intent (in) :: eh
    real(8), intent (in) :: ew
    real(8), intent (in) :: t
    real(8) :: tmp
    if ((eh <= (-1.2d+95)) .or. (.not. (eh <= 2.1d+196))) then
        tmp = abs(((sin(t) * -eh) * sin(atan(((-sin(t) / ew) * (eh / cos(t)))))))
    else
        tmp = abs(((-ew * cos(t)) / (cos(atan(((tan(t) / ew) * eh))) ** (-1.0d0))))
    end if
    code = tmp
end function
public static double code(double eh, double ew, double t) {
	double tmp;
	if ((eh <= -1.2e+95) || !(eh <= 2.1e+196)) {
		tmp = Math.abs(((Math.sin(t) * -eh) * Math.sin(Math.atan(((-Math.sin(t) / ew) * (eh / Math.cos(t)))))));
	} else {
		tmp = Math.abs(((-ew * Math.cos(t)) / Math.pow(Math.cos(Math.atan(((Math.tan(t) / ew) * eh))), -1.0)));
	}
	return tmp;
}
def code(eh, ew, t):
	tmp = 0
	if (eh <= -1.2e+95) or not (eh <= 2.1e+196):
		tmp = math.fabs(((math.sin(t) * -eh) * math.sin(math.atan(((-math.sin(t) / ew) * (eh / math.cos(t)))))))
	else:
		tmp = math.fabs(((-ew * math.cos(t)) / math.pow(math.cos(math.atan(((math.tan(t) / ew) * eh))), -1.0)))
	return tmp
function code(eh, ew, t)
	tmp = 0.0
	if ((eh <= -1.2e+95) || !(eh <= 2.1e+196))
		tmp = abs(Float64(Float64(sin(t) * Float64(-eh)) * sin(atan(Float64(Float64(Float64(-sin(t)) / ew) * Float64(eh / cos(t)))))));
	else
		tmp = abs(Float64(Float64(Float64(-ew) * cos(t)) / (cos(atan(Float64(Float64(tan(t) / ew) * eh))) ^ -1.0)));
	end
	return tmp
end
function tmp_2 = code(eh, ew, t)
	tmp = 0.0;
	if ((eh <= -1.2e+95) || ~((eh <= 2.1e+196)))
		tmp = abs(((sin(t) * -eh) * sin(atan(((-sin(t) / ew) * (eh / cos(t)))))));
	else
		tmp = abs(((-ew * cos(t)) / (cos(atan(((tan(t) / ew) * eh))) ^ -1.0)));
	end
	tmp_2 = tmp;
end
code[eh_, ew_, t_] := If[Or[LessEqual[eh, -1.2e+95], N[Not[LessEqual[eh, 2.1e+196]], $MachinePrecision]], N[Abs[N[(N[(N[Sin[t], $MachinePrecision] * (-eh)), $MachinePrecision] * N[Sin[N[ArcTan[N[(N[((-N[Sin[t], $MachinePrecision]) / ew), $MachinePrecision] * N[(eh / N[Cos[t], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]], $MachinePrecision]), $MachinePrecision]], $MachinePrecision], N[Abs[N[(N[((-ew) * N[Cos[t], $MachinePrecision]), $MachinePrecision] / N[Power[N[Cos[N[ArcTan[N[(N[(N[Tan[t], $MachinePrecision] / ew), $MachinePrecision] * eh), $MachinePrecision]], $MachinePrecision]], $MachinePrecision], -1.0], $MachinePrecision]), $MachinePrecision]], $MachinePrecision]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;eh \leq -1.2 \cdot 10^{+95} \lor \neg \left(eh \leq 2.1 \cdot 10^{+196}\right):\\
\;\;\;\;\left|\left(\sin t \cdot \left(-eh\right)\right) \cdot \sin \tan^{-1} \left(\frac{-\sin t}{ew} \cdot \frac{eh}{\cos t}\right)\right|\\

\mathbf{else}:\\
\;\;\;\;\left|\frac{\left(-ew\right) \cdot \cos t}{{\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)}^{-1}}\right|\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if eh < -1.2e95 or 2.10000000000000015e196 < eh

    1. Initial program 99.8%

      \[\left|\left(ew \cdot \cos t\right) \cdot \cos \tan^{-1} \left(\frac{\left(-eh\right) \cdot \tan t}{ew}\right) - \left(eh \cdot \sin t\right) \cdot \sin \tan^{-1} \left(\frac{\left(-eh\right) \cdot \tan t}{ew}\right)\right| \]
    2. Add Preprocessing
    3. Taylor expanded in eh around inf

      \[\leadsto \left|\color{blue}{-1 \cdot \left(eh \cdot \left(\sin t \cdot \sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)\right)\right)}\right| \]
    4. Step-by-step derivation
      1. associate-*r*N/A

        \[\leadsto \left|-1 \cdot \color{blue}{\left(\left(eh \cdot \sin t\right) \cdot \sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)\right)}\right| \]
      2. associate-*r*N/A

        \[\leadsto \left|\color{blue}{\left(-1 \cdot \left(eh \cdot \sin t\right)\right) \cdot \sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)}\right| \]
      3. lower-*.f64N/A

        \[\leadsto \left|\color{blue}{\left(-1 \cdot \left(eh \cdot \sin t\right)\right) \cdot \sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)}\right| \]
      4. *-commutativeN/A

        \[\leadsto \left|\left(-1 \cdot \color{blue}{\left(\sin t \cdot eh\right)}\right) \cdot \sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)\right| \]
      5. associate-*r*N/A

        \[\leadsto \left|\color{blue}{\left(\left(-1 \cdot \sin t\right) \cdot eh\right)} \cdot \sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)\right| \]
      6. neg-mul-1N/A

        \[\leadsto \left|\left(\color{blue}{\left(\mathsf{neg}\left(\sin t\right)\right)} \cdot eh\right) \cdot \sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)\right| \]
      7. lower-*.f64N/A

        \[\leadsto \left|\color{blue}{\left(\left(\mathsf{neg}\left(\sin t\right)\right) \cdot eh\right)} \cdot \sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)\right| \]
      8. lower-neg.f64N/A

        \[\leadsto \left|\left(\color{blue}{\left(-\sin t\right)} \cdot eh\right) \cdot \sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)\right| \]
      9. lower-sin.f64N/A

        \[\leadsto \left|\left(\left(-\color{blue}{\sin t}\right) \cdot eh\right) \cdot \sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)\right| \]
      10. lower-sin.f64N/A

        \[\leadsto \left|\left(\left(-\sin t\right) \cdot eh\right) \cdot \color{blue}{\sin \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)}\right| \]
      11. lower-atan.f64N/A

        \[\leadsto \left|\left(\left(-\sin t\right) \cdot eh\right) \cdot \sin \color{blue}{\tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)}\right| \]
      12. mul-1-negN/A

        \[\leadsto \left|\left(\left(-\sin t\right) \cdot eh\right) \cdot \sin \tan^{-1} \color{blue}{\left(\mathsf{neg}\left(\frac{eh \cdot \sin t}{ew \cdot \cos t}\right)\right)}\right| \]
      13. distribute-neg-frac2N/A

        \[\leadsto \left|\left(\left(-\sin t\right) \cdot eh\right) \cdot \sin \tan^{-1} \color{blue}{\left(\frac{eh \cdot \sin t}{\mathsf{neg}\left(ew \cdot \cos t\right)}\right)}\right| \]
      14. *-commutativeN/A

        \[\leadsto \left|\left(\left(-\sin t\right) \cdot eh\right) \cdot \sin \tan^{-1} \left(\frac{\color{blue}{\sin t \cdot eh}}{\mathsf{neg}\left(ew \cdot \cos t\right)}\right)\right| \]
      15. distribute-lft-neg-inN/A

        \[\leadsto \left|\left(\left(-\sin t\right) \cdot eh\right) \cdot \sin \tan^{-1} \left(\frac{\sin t \cdot eh}{\color{blue}{\left(\mathsf{neg}\left(ew\right)\right) \cdot \cos t}}\right)\right| \]
      16. mul-1-negN/A

        \[\leadsto \left|\left(\left(-\sin t\right) \cdot eh\right) \cdot \sin \tan^{-1} \left(\frac{\sin t \cdot eh}{\color{blue}{\left(-1 \cdot ew\right)} \cdot \cos t}\right)\right| \]
    5. Applied rewrites78.0%

      \[\leadsto \left|\color{blue}{\left(\left(-\sin t\right) \cdot eh\right) \cdot \sin \tan^{-1} \left(\frac{-\sin t}{ew} \cdot \frac{eh}{\cos t}\right)}\right| \]

    if -1.2e95 < eh < 2.10000000000000015e196

    1. Initial program 99.8%

      \[\left|\left(ew \cdot \cos t\right) \cdot \cos \tan^{-1} \left(\frac{\left(-eh\right) \cdot \tan t}{ew}\right) - \left(eh \cdot \sin t\right) \cdot \sin \tan^{-1} \left(\frac{\left(-eh\right) \cdot \tan t}{ew}\right)\right| \]
    2. Add Preprocessing
    3. Applied rewrites81.5%

      \[\leadsto \color{blue}{\left|\frac{\left(\sin t \cdot \left(-eh\right)\right) \cdot \left(\frac{\tan t}{ew} \cdot eh\right) - \cos t \cdot ew}{\frac{1}{\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)}}\right|} \]
    4. Taylor expanded in eh around 0

      \[\leadsto \left|\frac{\color{blue}{-1 \cdot \left(ew \cdot \cos t\right)}}{\frac{1}{\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)}}\right| \]
    5. Step-by-step derivation
      1. associate-*r*N/A

        \[\leadsto \left|\frac{\color{blue}{\left(-1 \cdot ew\right) \cdot \cos t}}{\frac{1}{\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)}}\right| \]
      2. mul-1-negN/A

        \[\leadsto \left|\frac{\color{blue}{\left(\mathsf{neg}\left(ew\right)\right)} \cdot \cos t}{\frac{1}{\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)}}\right| \]
      3. lower-*.f64N/A

        \[\leadsto \left|\frac{\color{blue}{\left(\mathsf{neg}\left(ew\right)\right) \cdot \cos t}}{\frac{1}{\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)}}\right| \]
      4. lower-neg.f64N/A

        \[\leadsto \left|\frac{\color{blue}{\left(-ew\right)} \cdot \cos t}{\frac{1}{\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)}}\right| \]
      5. lower-cos.f6479.8

        \[\leadsto \left|\frac{\left(-ew\right) \cdot \color{blue}{\cos t}}{\frac{1}{\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)}}\right| \]
    6. Applied rewrites79.8%

      \[\leadsto \left|\frac{\color{blue}{\left(-ew\right) \cdot \cos t}}{\frac{1}{\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)}}\right| \]
  3. Recombined 2 regimes into one program.
  4. Final simplification79.3%

    \[\leadsto \begin{array}{l} \mathbf{if}\;eh \leq -1.2 \cdot 10^{+95} \lor \neg \left(eh \leq 2.1 \cdot 10^{+196}\right):\\ \;\;\;\;\left|\left(\sin t \cdot \left(-eh\right)\right) \cdot \sin \tan^{-1} \left(\frac{-\sin t}{ew} \cdot \frac{eh}{\cos t}\right)\right|\\ \mathbf{else}:\\ \;\;\;\;\left|\frac{\left(-ew\right) \cdot \cos t}{{\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)}^{-1}}\right|\\ \end{array} \]
  5. Add Preprocessing

Alternative 6: 61.7% accurate, 1.6× speedup?

\[\begin{array}{l} \\ \left|\frac{\left(-ew\right) \cdot \cos t}{{\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)}^{-1}}\right| \end{array} \]
(FPCore (eh ew t)
 :precision binary64
 (fabs (/ (* (- ew) (cos t)) (pow (cos (atan (* (/ (tan t) ew) eh))) -1.0))))
double code(double eh, double ew, double t) {
	return fabs(((-ew * cos(t)) / pow(cos(atan(((tan(t) / ew) * eh))), -1.0)));
}
real(8) function code(eh, ew, t)
    real(8), intent (in) :: eh
    real(8), intent (in) :: ew
    real(8), intent (in) :: t
    code = abs(((-ew * cos(t)) / (cos(atan(((tan(t) / ew) * eh))) ** (-1.0d0))))
end function
public static double code(double eh, double ew, double t) {
	return Math.abs(((-ew * Math.cos(t)) / Math.pow(Math.cos(Math.atan(((Math.tan(t) / ew) * eh))), -1.0)));
}
def code(eh, ew, t):
	return math.fabs(((-ew * math.cos(t)) / math.pow(math.cos(math.atan(((math.tan(t) / ew) * eh))), -1.0)))
function code(eh, ew, t)
	return abs(Float64(Float64(Float64(-ew) * cos(t)) / (cos(atan(Float64(Float64(tan(t) / ew) * eh))) ^ -1.0)))
end
function tmp = code(eh, ew, t)
	tmp = abs(((-ew * cos(t)) / (cos(atan(((tan(t) / ew) * eh))) ^ -1.0)));
end
code[eh_, ew_, t_] := N[Abs[N[(N[((-ew) * N[Cos[t], $MachinePrecision]), $MachinePrecision] / N[Power[N[Cos[N[ArcTan[N[(N[(N[Tan[t], $MachinePrecision] / ew), $MachinePrecision] * eh), $MachinePrecision]], $MachinePrecision]], $MachinePrecision], -1.0], $MachinePrecision]), $MachinePrecision]], $MachinePrecision]
\begin{array}{l}

\\
\left|\frac{\left(-ew\right) \cdot \cos t}{{\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)}^{-1}}\right|
\end{array}
Derivation
  1. Initial program 99.8%

    \[\left|\left(ew \cdot \cos t\right) \cdot \cos \tan^{-1} \left(\frac{\left(-eh\right) \cdot \tan t}{ew}\right) - \left(eh \cdot \sin t\right) \cdot \sin \tan^{-1} \left(\frac{\left(-eh\right) \cdot \tan t}{ew}\right)\right| \]
  2. Add Preprocessing
  3. Applied rewrites68.6%

    \[\leadsto \color{blue}{\left|\frac{\left(\sin t \cdot \left(-eh\right)\right) \cdot \left(\frac{\tan t}{ew} \cdot eh\right) - \cos t \cdot ew}{\frac{1}{\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)}}\right|} \]
  4. Taylor expanded in eh around 0

    \[\leadsto \left|\frac{\color{blue}{-1 \cdot \left(ew \cdot \cos t\right)}}{\frac{1}{\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)}}\right| \]
  5. Step-by-step derivation
    1. associate-*r*N/A

      \[\leadsto \left|\frac{\color{blue}{\left(-1 \cdot ew\right) \cdot \cos t}}{\frac{1}{\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)}}\right| \]
    2. mul-1-negN/A

      \[\leadsto \left|\frac{\color{blue}{\left(\mathsf{neg}\left(ew\right)\right)} \cdot \cos t}{\frac{1}{\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)}}\right| \]
    3. lower-*.f64N/A

      \[\leadsto \left|\frac{\color{blue}{\left(\mathsf{neg}\left(ew\right)\right) \cdot \cos t}}{\frac{1}{\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)}}\right| \]
    4. lower-neg.f64N/A

      \[\leadsto \left|\frac{\color{blue}{\left(-ew\right)} \cdot \cos t}{\frac{1}{\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)}}\right| \]
    5. lower-cos.f6466.7

      \[\leadsto \left|\frac{\left(-ew\right) \cdot \color{blue}{\cos t}}{\frac{1}{\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)}}\right| \]
  6. Applied rewrites66.7%

    \[\leadsto \left|\frac{\color{blue}{\left(-ew\right) \cdot \cos t}}{\frac{1}{\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)}}\right| \]
  7. Final simplification66.7%

    \[\leadsto \left|\frac{\left(-ew\right) \cdot \cos t}{{\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)}^{-1}}\right| \]
  8. Add Preprocessing

Alternative 7: 61.7% accurate, 2.0× speedup?

\[\begin{array}{l} \\ \left|\cos t \cdot ew\right| \cdot \cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right) \end{array} \]
(FPCore (eh ew t)
 :precision binary64
 (* (fabs (* (cos t) ew)) (cos (atan (* (/ (tan t) ew) eh)))))
double code(double eh, double ew, double t) {
	return fabs((cos(t) * ew)) * cos(atan(((tan(t) / ew) * eh)));
}
real(8) function code(eh, ew, t)
    real(8), intent (in) :: eh
    real(8), intent (in) :: ew
    real(8), intent (in) :: t
    code = abs((cos(t) * ew)) * cos(atan(((tan(t) / ew) * eh)))
end function
public static double code(double eh, double ew, double t) {
	return Math.abs((Math.cos(t) * ew)) * Math.cos(Math.atan(((Math.tan(t) / ew) * eh)));
}
def code(eh, ew, t):
	return math.fabs((math.cos(t) * ew)) * math.cos(math.atan(((math.tan(t) / ew) * eh)))
function code(eh, ew, t)
	return Float64(abs(Float64(cos(t) * ew)) * cos(atan(Float64(Float64(tan(t) / ew) * eh))))
end
function tmp = code(eh, ew, t)
	tmp = abs((cos(t) * ew)) * cos(atan(((tan(t) / ew) * eh)));
end
code[eh_, ew_, t_] := N[(N[Abs[N[(N[Cos[t], $MachinePrecision] * ew), $MachinePrecision]], $MachinePrecision] * N[Cos[N[ArcTan[N[(N[(N[Tan[t], $MachinePrecision] / ew), $MachinePrecision] * eh), $MachinePrecision]], $MachinePrecision]], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\left|\cos t \cdot ew\right| \cdot \cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)
\end{array}
Derivation
  1. Initial program 99.8%

    \[\left|\left(ew \cdot \cos t\right) \cdot \cos \tan^{-1} \left(\frac{\left(-eh\right) \cdot \tan t}{ew}\right) - \left(eh \cdot \sin t\right) \cdot \sin \tan^{-1} \left(\frac{\left(-eh\right) \cdot \tan t}{ew}\right)\right| \]
  2. Add Preprocessing
  3. Applied rewrites99.8%

    \[\leadsto \left|\color{blue}{\mathsf{fma}\left(\cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right) \cdot \cos t, ew, \left(\sin t \cdot \left(-eh\right)\right) \cdot \left(-\sin \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)\right)\right)}\right| \]
  4. Applied rewrites68.6%

    \[\leadsto \color{blue}{\left|\cos t \cdot ew - \left(\left(\frac{\tan t}{ew} \cdot eh\right) \cdot eh\right) \cdot \left(-\sin t\right)\right| \cdot \cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right)} \]
  5. Taylor expanded in eh around 0

    \[\leadsto \left|\color{blue}{ew \cdot \cos t}\right| \cdot \cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right) \]
  6. Step-by-step derivation
    1. *-commutativeN/A

      \[\leadsto \left|\color{blue}{\cos t \cdot ew}\right| \cdot \cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right) \]
    2. lower-*.f64N/A

      \[\leadsto \left|\color{blue}{\cos t \cdot ew}\right| \cdot \cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right) \]
    3. lower-cos.f6466.7

      \[\leadsto \left|\color{blue}{\cos t} \cdot ew\right| \cdot \cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right) \]
  7. Applied rewrites66.7%

    \[\leadsto \left|\color{blue}{\cos t \cdot ew}\right| \cdot \cos \tan^{-1} \left(\frac{\tan t}{ew} \cdot eh\right) \]
  8. Add Preprocessing

Alternative 8: 42.4% accurate, 61.6× speedup?

\[\begin{array}{l} \\ \left|\frac{ew}{1}\right| \end{array} \]
(FPCore (eh ew t) :precision binary64 (fabs (/ ew 1.0)))
double code(double eh, double ew, double t) {
	return fabs((ew / 1.0));
}
real(8) function code(eh, ew, t)
    real(8), intent (in) :: eh
    real(8), intent (in) :: ew
    real(8), intent (in) :: t
    code = abs((ew / 1.0d0))
end function
public static double code(double eh, double ew, double t) {
	return Math.abs((ew / 1.0));
}
def code(eh, ew, t):
	return math.fabs((ew / 1.0))
function code(eh, ew, t)
	return abs(Float64(ew / 1.0))
end
function tmp = code(eh, ew, t)
	tmp = abs((ew / 1.0));
end
code[eh_, ew_, t_] := N[Abs[N[(ew / 1.0), $MachinePrecision]], $MachinePrecision]
\begin{array}{l}

\\
\left|\frac{ew}{1}\right|
\end{array}
Derivation
  1. Initial program 99.8%

    \[\left|\left(ew \cdot \cos t\right) \cdot \cos \tan^{-1} \left(\frac{\left(-eh\right) \cdot \tan t}{ew}\right) - \left(eh \cdot \sin t\right) \cdot \sin \tan^{-1} \left(\frac{\left(-eh\right) \cdot \tan t}{ew}\right)\right| \]
  2. Add Preprocessing
  3. Taylor expanded in t around 0

    \[\leadsto \left|\color{blue}{ew \cdot \cos \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right)}\right| \]
  4. Step-by-step derivation
    1. *-commutativeN/A

      \[\leadsto \left|\color{blue}{\cos \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right) \cdot ew}\right| \]
    2. lower-*.f64N/A

      \[\leadsto \left|\color{blue}{\cos \tan^{-1} \left(-1 \cdot \frac{eh \cdot \sin t}{ew \cdot \cos t}\right) \cdot ew}\right| \]
  5. Applied rewrites45.4%

    \[\leadsto \left|\color{blue}{\cos \tan^{-1} \left(\frac{-\sin t}{ew} \cdot \frac{eh}{\cos t}\right) \cdot ew}\right| \]
  6. Taylor expanded in t around 0

    \[\leadsto \left|\cos \tan^{-1} \left(-1 \cdot \frac{eh \cdot t}{ew}\right) \cdot ew\right| \]
  7. Step-by-step derivation
    1. Applied rewrites44.3%

      \[\leadsto \left|\cos \tan^{-1} \left(t \cdot \frac{-eh}{ew}\right) \cdot ew\right| \]
    2. Step-by-step derivation
      1. Applied rewrites43.4%

        \[\leadsto \left|\frac{ew}{\color{blue}{\sqrt{{\left(\frac{-eh}{ew} \cdot t\right)}^{2} + 1}}}\right| \]
      2. Taylor expanded in eh around 0

        \[\leadsto \left|\frac{ew}{1}\right| \]
      3. Step-by-step derivation
        1. Applied rewrites45.6%

          \[\leadsto \left|\frac{ew}{1}\right| \]
        2. Add Preprocessing

        Reproduce

        ?
        herbie shell --seed 2024317 
        (FPCore (eh ew t)
          :name "Example 2 from Robby"
          :precision binary64
          (fabs (- (* (* ew (cos t)) (cos (atan (/ (* (- eh) (tan t)) ew)))) (* (* eh (sin t)) (sin (atan (/ (* (- eh) (tan t)) ew)))))))