Graphics.Rendering.Chart.Plot.Vectors:renderPlotVectors from Chart-1.5.3

Percentage Accurate: 78.0% → 100.0%
Time: 5.7s
Alternatives: 8
Speedup: 1.3×

Specification

?
\[\begin{array}{l} \\ x + \left(1 - x\right) \cdot \left(1 - y\right) \end{array} \]
(FPCore (x y) :precision binary64 (+ x (* (- 1.0 x) (- 1.0 y))))
double code(double x, double y) {
	return x + ((1.0 - x) * (1.0 - y));
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = x + ((1.0d0 - x) * (1.0d0 - y))
end function
public static double code(double x, double y) {
	return x + ((1.0 - x) * (1.0 - y));
}
def code(x, y):
	return x + ((1.0 - x) * (1.0 - y))
function code(x, y)
	return Float64(x + Float64(Float64(1.0 - x) * Float64(1.0 - y)))
end
function tmp = code(x, y)
	tmp = x + ((1.0 - x) * (1.0 - y));
end
code[x_, y_] := N[(x + N[(N[(1.0 - x), $MachinePrecision] * N[(1.0 - y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
x + \left(1 - x\right) \cdot \left(1 - y\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: 78.0% accurate, 1.0× speedup?

\[\begin{array}{l} \\ x + \left(1 - x\right) \cdot \left(1 - y\right) \end{array} \]
(FPCore (x y) :precision binary64 (+ x (* (- 1.0 x) (- 1.0 y))))
double code(double x, double y) {
	return x + ((1.0 - x) * (1.0 - y));
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = x + ((1.0d0 - x) * (1.0d0 - y))
end function
public static double code(double x, double y) {
	return x + ((1.0 - x) * (1.0 - y));
}
def code(x, y):
	return x + ((1.0 - x) * (1.0 - y))
function code(x, y)
	return Float64(x + Float64(Float64(1.0 - x) * Float64(1.0 - y)))
end
function tmp = code(x, y)
	tmp = x + ((1.0 - x) * (1.0 - y));
end
code[x_, y_] := N[(x + N[(N[(1.0 - x), $MachinePrecision] * N[(1.0 - y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
x + \left(1 - x\right) \cdot \left(1 - y\right)
\end{array}

Alternative 1: 100.0% accurate, 1.3× speedup?

\[\begin{array}{l} \\ 1 + \left(y \cdot x - y\right) \end{array} \]
(FPCore (x y) :precision binary64 (+ 1.0 (- (* y x) y)))
double code(double x, double y) {
	return 1.0 + ((y * x) - y);
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = 1.0d0 + ((y * x) - y)
end function
public static double code(double x, double y) {
	return 1.0 + ((y * x) - y);
}
def code(x, y):
	return 1.0 + ((y * x) - y)
function code(x, y)
	return Float64(1.0 + Float64(Float64(y * x) - y))
end
function tmp = code(x, y)
	tmp = 1.0 + ((y * x) - y);
end
code[x_, y_] := N[(1.0 + N[(N[(y * x), $MachinePrecision] - y), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
1 + \left(y \cdot x - y\right)
\end{array}
Derivation
  1. Initial program 78.0%

    \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
  2. Step-by-step derivation
    1. +-commutative78.0%

      \[\leadsto \color{blue}{\left(1 - x\right) \cdot \left(1 - y\right) + x} \]
    2. remove-double-neg78.0%

      \[\leadsto \left(1 - x\right) \cdot \left(1 - y\right) + \color{blue}{\left(-\left(-x\right)\right)} \]
    3. unsub-neg78.0%

      \[\leadsto \color{blue}{\left(1 - x\right) \cdot \left(1 - y\right) - \left(-x\right)} \]
    4. sub-neg78.0%

      \[\leadsto \left(1 - x\right) \cdot \color{blue}{\left(1 + \left(-y\right)\right)} - \left(-x\right) \]
    5. +-commutative78.0%

      \[\leadsto \left(1 - x\right) \cdot \color{blue}{\left(\left(-y\right) + 1\right)} - \left(-x\right) \]
    6. distribute-rgt-in78.0%

      \[\leadsto \color{blue}{\left(\left(-y\right) \cdot \left(1 - x\right) + 1 \cdot \left(1 - x\right)\right)} - \left(-x\right) \]
    7. *-lft-identity78.0%

      \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + \color{blue}{\left(1 - x\right)}\right) - \left(-x\right) \]
    8. associate-+r-78.0%

      \[\leadsto \color{blue}{\left(\left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - x\right)} - \left(-x\right) \]
    9. associate--l-100.0%

      \[\leadsto \color{blue}{\left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \left(x + \left(-x\right)\right)} \]
    10. sub-neg100.0%

      \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \color{blue}{\left(x - x\right)} \]
    11. +-inverses100.0%

      \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \color{blue}{0} \]
    12. --rgt-identity100.0%

      \[\leadsto \color{blue}{\left(-y\right) \cdot \left(1 - x\right) + 1} \]
    13. +-commutative100.0%

      \[\leadsto \color{blue}{1 + \left(-y\right) \cdot \left(1 - x\right)} \]
    14. distribute-lft-neg-out100.0%

      \[\leadsto 1 + \color{blue}{\left(-y \cdot \left(1 - x\right)\right)} \]
    15. distribute-rgt-neg-in100.0%

      \[\leadsto 1 + \color{blue}{y \cdot \left(-\left(1 - x\right)\right)} \]
    16. neg-sub0100.0%

      \[\leadsto 1 + y \cdot \color{blue}{\left(0 - \left(1 - x\right)\right)} \]
    17. associate--r-100.0%

      \[\leadsto 1 + y \cdot \color{blue}{\left(\left(0 - 1\right) + x\right)} \]
    18. metadata-eval100.0%

      \[\leadsto 1 + y \cdot \left(\color{blue}{-1} + x\right) \]
    19. +-commutative100.0%

      \[\leadsto 1 + y \cdot \color{blue}{\left(x + -1\right)} \]
  3. Simplified100.0%

    \[\leadsto \color{blue}{1 + y \cdot \left(x + -1\right)} \]
  4. Add Preprocessing
  5. Step-by-step derivation
    1. distribute-lft-in100.0%

      \[\leadsto 1 + \color{blue}{\left(y \cdot x + y \cdot -1\right)} \]
    2. fma-define100.0%

      \[\leadsto 1 + \color{blue}{\mathsf{fma}\left(y, x, y \cdot -1\right)} \]
    3. *-commutative100.0%

      \[\leadsto 1 + \mathsf{fma}\left(y, x, \color{blue}{-1 \cdot y}\right) \]
    4. mul-1-neg100.0%

      \[\leadsto 1 + \mathsf{fma}\left(y, x, \color{blue}{-y}\right) \]
    5. fmm-undef100.0%

      \[\leadsto 1 + \color{blue}{\left(y \cdot x - y\right)} \]
  6. Applied egg-rr100.0%

    \[\leadsto 1 + \color{blue}{\left(y \cdot x - y\right)} \]
  7. Add Preprocessing

Alternative 2: 61.1% accurate, 0.4× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;x \leq -1400:\\ \;\;\;\;y \cdot x\\ \mathbf{elif}\;x \leq -2.2 \cdot 10^{-191}:\\ \;\;\;\;-y\\ \mathbf{elif}\;x \leq 1.65 \cdot 10^{-167}:\\ \;\;\;\;1\\ \mathbf{elif}\;x \leq 1:\\ \;\;\;\;-y\\ \mathbf{else}:\\ \;\;\;\;y \cdot x\\ \end{array} \end{array} \]
(FPCore (x y)
 :precision binary64
 (if (<= x -1400.0)
   (* y x)
   (if (<= x -2.2e-191)
     (- y)
     (if (<= x 1.65e-167) 1.0 (if (<= x 1.0) (- y) (* y x))))))
double code(double x, double y) {
	double tmp;
	if (x <= -1400.0) {
		tmp = y * x;
	} else if (x <= -2.2e-191) {
		tmp = -y;
	} else if (x <= 1.65e-167) {
		tmp = 1.0;
	} else if (x <= 1.0) {
		tmp = -y;
	} else {
		tmp = y * x;
	}
	return tmp;
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8) :: tmp
    if (x <= (-1400.0d0)) then
        tmp = y * x
    else if (x <= (-2.2d-191)) then
        tmp = -y
    else if (x <= 1.65d-167) then
        tmp = 1.0d0
    else if (x <= 1.0d0) then
        tmp = -y
    else
        tmp = y * x
    end if
    code = tmp
end function
public static double code(double x, double y) {
	double tmp;
	if (x <= -1400.0) {
		tmp = y * x;
	} else if (x <= -2.2e-191) {
		tmp = -y;
	} else if (x <= 1.65e-167) {
		tmp = 1.0;
	} else if (x <= 1.0) {
		tmp = -y;
	} else {
		tmp = y * x;
	}
	return tmp;
}
def code(x, y):
	tmp = 0
	if x <= -1400.0:
		tmp = y * x
	elif x <= -2.2e-191:
		tmp = -y
	elif x <= 1.65e-167:
		tmp = 1.0
	elif x <= 1.0:
		tmp = -y
	else:
		tmp = y * x
	return tmp
function code(x, y)
	tmp = 0.0
	if (x <= -1400.0)
		tmp = Float64(y * x);
	elseif (x <= -2.2e-191)
		tmp = Float64(-y);
	elseif (x <= 1.65e-167)
		tmp = 1.0;
	elseif (x <= 1.0)
		tmp = Float64(-y);
	else
		tmp = Float64(y * x);
	end
	return tmp
end
function tmp_2 = code(x, y)
	tmp = 0.0;
	if (x <= -1400.0)
		tmp = y * x;
	elseif (x <= -2.2e-191)
		tmp = -y;
	elseif (x <= 1.65e-167)
		tmp = 1.0;
	elseif (x <= 1.0)
		tmp = -y;
	else
		tmp = y * x;
	end
	tmp_2 = tmp;
end
code[x_, y_] := If[LessEqual[x, -1400.0], N[(y * x), $MachinePrecision], If[LessEqual[x, -2.2e-191], (-y), If[LessEqual[x, 1.65e-167], 1.0, If[LessEqual[x, 1.0], (-y), N[(y * x), $MachinePrecision]]]]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;x \leq -1400:\\
\;\;\;\;y \cdot x\\

\mathbf{elif}\;x \leq -2.2 \cdot 10^{-191}:\\
\;\;\;\;-y\\

\mathbf{elif}\;x \leq 1.65 \cdot 10^{-167}:\\
\;\;\;\;1\\

\mathbf{elif}\;x \leq 1:\\
\;\;\;\;-y\\

\mathbf{else}:\\
\;\;\;\;y \cdot x\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if x < -1400 or 1 < x

    1. Initial program 53.5%

      \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
    2. Step-by-step derivation
      1. +-commutative53.5%

        \[\leadsto \color{blue}{\left(1 - x\right) \cdot \left(1 - y\right) + x} \]
      2. remove-double-neg53.5%

        \[\leadsto \left(1 - x\right) \cdot \left(1 - y\right) + \color{blue}{\left(-\left(-x\right)\right)} \]
      3. unsub-neg53.5%

        \[\leadsto \color{blue}{\left(1 - x\right) \cdot \left(1 - y\right) - \left(-x\right)} \]
      4. sub-neg53.5%

        \[\leadsto \left(1 - x\right) \cdot \color{blue}{\left(1 + \left(-y\right)\right)} - \left(-x\right) \]
      5. +-commutative53.5%

        \[\leadsto \left(1 - x\right) \cdot \color{blue}{\left(\left(-y\right) + 1\right)} - \left(-x\right) \]
      6. distribute-rgt-in53.5%

        \[\leadsto \color{blue}{\left(\left(-y\right) \cdot \left(1 - x\right) + 1 \cdot \left(1 - x\right)\right)} - \left(-x\right) \]
      7. *-lft-identity53.5%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + \color{blue}{\left(1 - x\right)}\right) - \left(-x\right) \]
      8. associate-+r-53.5%

        \[\leadsto \color{blue}{\left(\left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - x\right)} - \left(-x\right) \]
      9. associate--l-100.0%

        \[\leadsto \color{blue}{\left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \left(x + \left(-x\right)\right)} \]
      10. sub-neg100.0%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \color{blue}{\left(x - x\right)} \]
      11. +-inverses100.0%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \color{blue}{0} \]
      12. --rgt-identity100.0%

        \[\leadsto \color{blue}{\left(-y\right) \cdot \left(1 - x\right) + 1} \]
      13. +-commutative100.0%

        \[\leadsto \color{blue}{1 + \left(-y\right) \cdot \left(1 - x\right)} \]
      14. distribute-lft-neg-out100.0%

        \[\leadsto 1 + \color{blue}{\left(-y \cdot \left(1 - x\right)\right)} \]
      15. distribute-rgt-neg-in100.0%

        \[\leadsto 1 + \color{blue}{y \cdot \left(-\left(1 - x\right)\right)} \]
      16. neg-sub0100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(0 - \left(1 - x\right)\right)} \]
      17. associate--r-100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(\left(0 - 1\right) + x\right)} \]
      18. metadata-eval100.0%

        \[\leadsto 1 + y \cdot \left(\color{blue}{-1} + x\right) \]
      19. +-commutative100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(x + -1\right)} \]
    3. Simplified100.0%

      \[\leadsto \color{blue}{1 + y \cdot \left(x + -1\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around inf 99.9%

      \[\leadsto \color{blue}{y \cdot \left(\left(x + \frac{1}{y}\right) - 1\right)} \]
    6. Taylor expanded in x around inf 80.1%

      \[\leadsto y \cdot \color{blue}{x} \]

    if -1400 < x < -2.19999999999999998e-191 or 1.64999999999999998e-167 < x < 1

    1. Initial program 100.0%

      \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
    2. Step-by-step derivation
      1. +-commutative100.0%

        \[\leadsto \color{blue}{\left(1 - x\right) \cdot \left(1 - y\right) + x} \]
      2. remove-double-neg100.0%

        \[\leadsto \left(1 - x\right) \cdot \left(1 - y\right) + \color{blue}{\left(-\left(-x\right)\right)} \]
      3. unsub-neg100.0%

        \[\leadsto \color{blue}{\left(1 - x\right) \cdot \left(1 - y\right) - \left(-x\right)} \]
      4. sub-neg100.0%

        \[\leadsto \left(1 - x\right) \cdot \color{blue}{\left(1 + \left(-y\right)\right)} - \left(-x\right) \]
      5. +-commutative100.0%

        \[\leadsto \left(1 - x\right) \cdot \color{blue}{\left(\left(-y\right) + 1\right)} - \left(-x\right) \]
      6. distribute-rgt-in100.0%

        \[\leadsto \color{blue}{\left(\left(-y\right) \cdot \left(1 - x\right) + 1 \cdot \left(1 - x\right)\right)} - \left(-x\right) \]
      7. *-lft-identity100.0%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + \color{blue}{\left(1 - x\right)}\right) - \left(-x\right) \]
      8. associate-+r-100.0%

        \[\leadsto \color{blue}{\left(\left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - x\right)} - \left(-x\right) \]
      9. associate--l-100.0%

        \[\leadsto \color{blue}{\left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \left(x + \left(-x\right)\right)} \]
      10. sub-neg100.0%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \color{blue}{\left(x - x\right)} \]
      11. +-inverses100.0%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \color{blue}{0} \]
      12. --rgt-identity100.0%

        \[\leadsto \color{blue}{\left(-y\right) \cdot \left(1 - x\right) + 1} \]
      13. +-commutative100.0%

        \[\leadsto \color{blue}{1 + \left(-y\right) \cdot \left(1 - x\right)} \]
      14. distribute-lft-neg-out100.0%

        \[\leadsto 1 + \color{blue}{\left(-y \cdot \left(1 - x\right)\right)} \]
      15. distribute-rgt-neg-in100.0%

        \[\leadsto 1 + \color{blue}{y \cdot \left(-\left(1 - x\right)\right)} \]
      16. neg-sub0100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(0 - \left(1 - x\right)\right)} \]
      17. associate--r-100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(\left(0 - 1\right) + x\right)} \]
      18. metadata-eval100.0%

        \[\leadsto 1 + y \cdot \left(\color{blue}{-1} + x\right) \]
      19. +-commutative100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(x + -1\right)} \]
    3. Simplified100.0%

      \[\leadsto \color{blue}{1 + y \cdot \left(x + -1\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around inf 99.9%

      \[\leadsto \color{blue}{y \cdot \left(\left(x + \frac{1}{y}\right) - 1\right)} \]
    6. Taylor expanded in y around inf 64.5%

      \[\leadsto y \cdot \color{blue}{\left(x - 1\right)} \]
    7. Taylor expanded in x around 0 62.6%

      \[\leadsto \color{blue}{-1 \cdot y} \]
    8. Step-by-step derivation
      1. neg-mul-162.6%

        \[\leadsto \color{blue}{-y} \]
    9. Simplified62.6%

      \[\leadsto \color{blue}{-y} \]

    if -2.19999999999999998e-191 < x < 1.64999999999999998e-167

    1. Initial program 100.0%

      \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
    2. Step-by-step derivation
      1. +-commutative100.0%

        \[\leadsto \color{blue}{\left(1 - x\right) \cdot \left(1 - y\right) + x} \]
      2. remove-double-neg100.0%

        \[\leadsto \left(1 - x\right) \cdot \left(1 - y\right) + \color{blue}{\left(-\left(-x\right)\right)} \]
      3. unsub-neg100.0%

        \[\leadsto \color{blue}{\left(1 - x\right) \cdot \left(1 - y\right) - \left(-x\right)} \]
      4. sub-neg100.0%

        \[\leadsto \left(1 - x\right) \cdot \color{blue}{\left(1 + \left(-y\right)\right)} - \left(-x\right) \]
      5. +-commutative100.0%

        \[\leadsto \left(1 - x\right) \cdot \color{blue}{\left(\left(-y\right) + 1\right)} - \left(-x\right) \]
      6. distribute-rgt-in100.0%

        \[\leadsto \color{blue}{\left(\left(-y\right) \cdot \left(1 - x\right) + 1 \cdot \left(1 - x\right)\right)} - \left(-x\right) \]
      7. *-lft-identity100.0%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + \color{blue}{\left(1 - x\right)}\right) - \left(-x\right) \]
      8. associate-+r-100.0%

        \[\leadsto \color{blue}{\left(\left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - x\right)} - \left(-x\right) \]
      9. associate--l-100.0%

        \[\leadsto \color{blue}{\left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \left(x + \left(-x\right)\right)} \]
      10. sub-neg100.0%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \color{blue}{\left(x - x\right)} \]
      11. +-inverses100.0%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \color{blue}{0} \]
      12. --rgt-identity100.0%

        \[\leadsto \color{blue}{\left(-y\right) \cdot \left(1 - x\right) + 1} \]
      13. +-commutative100.0%

        \[\leadsto \color{blue}{1 + \left(-y\right) \cdot \left(1 - x\right)} \]
      14. distribute-lft-neg-out100.0%

        \[\leadsto 1 + \color{blue}{\left(-y \cdot \left(1 - x\right)\right)} \]
      15. distribute-rgt-neg-in100.0%

        \[\leadsto 1 + \color{blue}{y \cdot \left(-\left(1 - x\right)\right)} \]
      16. neg-sub0100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(0 - \left(1 - x\right)\right)} \]
      17. associate--r-100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(\left(0 - 1\right) + x\right)} \]
      18. metadata-eval100.0%

        \[\leadsto 1 + y \cdot \left(\color{blue}{-1} + x\right) \]
      19. +-commutative100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(x + -1\right)} \]
    3. Simplified100.0%

      \[\leadsto \color{blue}{1 + y \cdot \left(x + -1\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around 0 61.7%

      \[\leadsto \color{blue}{1} \]
  3. Recombined 3 regimes into one program.
  4. Add Preprocessing

Alternative 3: 99.0% accurate, 0.6× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;x \leq -1400 \lor \neg \left(x \leq 1.3 \cdot 10^{-8}\right):\\ \;\;\;\;1 + y \cdot x\\ \mathbf{else}:\\ \;\;\;\;1 - y\\ \end{array} \end{array} \]
(FPCore (x y)
 :precision binary64
 (if (or (<= x -1400.0) (not (<= x 1.3e-8))) (+ 1.0 (* y x)) (- 1.0 y)))
double code(double x, double y) {
	double tmp;
	if ((x <= -1400.0) || !(x <= 1.3e-8)) {
		tmp = 1.0 + (y * x);
	} else {
		tmp = 1.0 - y;
	}
	return tmp;
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8) :: tmp
    if ((x <= (-1400.0d0)) .or. (.not. (x <= 1.3d-8))) then
        tmp = 1.0d0 + (y * x)
    else
        tmp = 1.0d0 - y
    end if
    code = tmp
end function
public static double code(double x, double y) {
	double tmp;
	if ((x <= -1400.0) || !(x <= 1.3e-8)) {
		tmp = 1.0 + (y * x);
	} else {
		tmp = 1.0 - y;
	}
	return tmp;
}
def code(x, y):
	tmp = 0
	if (x <= -1400.0) or not (x <= 1.3e-8):
		tmp = 1.0 + (y * x)
	else:
		tmp = 1.0 - y
	return tmp
function code(x, y)
	tmp = 0.0
	if ((x <= -1400.0) || !(x <= 1.3e-8))
		tmp = Float64(1.0 + Float64(y * x));
	else
		tmp = Float64(1.0 - y);
	end
	return tmp
end
function tmp_2 = code(x, y)
	tmp = 0.0;
	if ((x <= -1400.0) || ~((x <= 1.3e-8)))
		tmp = 1.0 + (y * x);
	else
		tmp = 1.0 - y;
	end
	tmp_2 = tmp;
end
code[x_, y_] := If[Or[LessEqual[x, -1400.0], N[Not[LessEqual[x, 1.3e-8]], $MachinePrecision]], N[(1.0 + N[(y * x), $MachinePrecision]), $MachinePrecision], N[(1.0 - y), $MachinePrecision]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;x \leq -1400 \lor \neg \left(x \leq 1.3 \cdot 10^{-8}\right):\\
\;\;\;\;1 + y \cdot x\\

\mathbf{else}:\\
\;\;\;\;1 - y\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if x < -1400 or 1.3000000000000001e-8 < x

    1. Initial program 54.2%

      \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
    2. Step-by-step derivation
      1. +-commutative54.2%

        \[\leadsto \color{blue}{\left(1 - x\right) \cdot \left(1 - y\right) + x} \]
      2. remove-double-neg54.2%

        \[\leadsto \left(1 - x\right) \cdot \left(1 - y\right) + \color{blue}{\left(-\left(-x\right)\right)} \]
      3. unsub-neg54.2%

        \[\leadsto \color{blue}{\left(1 - x\right) \cdot \left(1 - y\right) - \left(-x\right)} \]
      4. sub-neg54.2%

        \[\leadsto \left(1 - x\right) \cdot \color{blue}{\left(1 + \left(-y\right)\right)} - \left(-x\right) \]
      5. +-commutative54.2%

        \[\leadsto \left(1 - x\right) \cdot \color{blue}{\left(\left(-y\right) + 1\right)} - \left(-x\right) \]
      6. distribute-rgt-in54.2%

        \[\leadsto \color{blue}{\left(\left(-y\right) \cdot \left(1 - x\right) + 1 \cdot \left(1 - x\right)\right)} - \left(-x\right) \]
      7. *-lft-identity54.2%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + \color{blue}{\left(1 - x\right)}\right) - \left(-x\right) \]
      8. associate-+r-54.2%

        \[\leadsto \color{blue}{\left(\left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - x\right)} - \left(-x\right) \]
      9. associate--l-100.0%

        \[\leadsto \color{blue}{\left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \left(x + \left(-x\right)\right)} \]
      10. sub-neg100.0%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \color{blue}{\left(x - x\right)} \]
      11. +-inverses100.0%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \color{blue}{0} \]
      12. --rgt-identity100.0%

        \[\leadsto \color{blue}{\left(-y\right) \cdot \left(1 - x\right) + 1} \]
      13. +-commutative100.0%

        \[\leadsto \color{blue}{1 + \left(-y\right) \cdot \left(1 - x\right)} \]
      14. distribute-lft-neg-out100.0%

        \[\leadsto 1 + \color{blue}{\left(-y \cdot \left(1 - x\right)\right)} \]
      15. distribute-rgt-neg-in100.0%

        \[\leadsto 1 + \color{blue}{y \cdot \left(-\left(1 - x\right)\right)} \]
      16. neg-sub0100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(0 - \left(1 - x\right)\right)} \]
      17. associate--r-100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(\left(0 - 1\right) + x\right)} \]
      18. metadata-eval100.0%

        \[\leadsto 1 + y \cdot \left(\color{blue}{-1} + x\right) \]
      19. +-commutative100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(x + -1\right)} \]
    3. Simplified100.0%

      \[\leadsto \color{blue}{1 + y \cdot \left(x + -1\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in x around inf 99.4%

      \[\leadsto 1 + \color{blue}{x \cdot y} \]
    6. Step-by-step derivation
      1. *-commutative99.4%

        \[\leadsto 1 + \color{blue}{y \cdot x} \]
    7. Simplified99.4%

      \[\leadsto 1 + \color{blue}{y \cdot x} \]

    if -1400 < x < 1.3000000000000001e-8

    1. Initial program 100.0%

      \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
    2. Step-by-step derivation
      1. +-commutative100.0%

        \[\leadsto \color{blue}{\left(1 - x\right) \cdot \left(1 - y\right) + x} \]
      2. remove-double-neg100.0%

        \[\leadsto \left(1 - x\right) \cdot \left(1 - y\right) + \color{blue}{\left(-\left(-x\right)\right)} \]
      3. unsub-neg100.0%

        \[\leadsto \color{blue}{\left(1 - x\right) \cdot \left(1 - y\right) - \left(-x\right)} \]
      4. sub-neg100.0%

        \[\leadsto \left(1 - x\right) \cdot \color{blue}{\left(1 + \left(-y\right)\right)} - \left(-x\right) \]
      5. +-commutative100.0%

        \[\leadsto \left(1 - x\right) \cdot \color{blue}{\left(\left(-y\right) + 1\right)} - \left(-x\right) \]
      6. distribute-rgt-in100.0%

        \[\leadsto \color{blue}{\left(\left(-y\right) \cdot \left(1 - x\right) + 1 \cdot \left(1 - x\right)\right)} - \left(-x\right) \]
      7. *-lft-identity100.0%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + \color{blue}{\left(1 - x\right)}\right) - \left(-x\right) \]
      8. associate-+r-100.0%

        \[\leadsto \color{blue}{\left(\left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - x\right)} - \left(-x\right) \]
      9. associate--l-100.0%

        \[\leadsto \color{blue}{\left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \left(x + \left(-x\right)\right)} \]
      10. sub-neg100.0%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \color{blue}{\left(x - x\right)} \]
      11. +-inverses100.0%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \color{blue}{0} \]
      12. --rgt-identity100.0%

        \[\leadsto \color{blue}{\left(-y\right) \cdot \left(1 - x\right) + 1} \]
      13. +-commutative100.0%

        \[\leadsto \color{blue}{1 + \left(-y\right) \cdot \left(1 - x\right)} \]
      14. distribute-lft-neg-out100.0%

        \[\leadsto 1 + \color{blue}{\left(-y \cdot \left(1 - x\right)\right)} \]
      15. distribute-rgt-neg-in100.0%

        \[\leadsto 1 + \color{blue}{y \cdot \left(-\left(1 - x\right)\right)} \]
      16. neg-sub0100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(0 - \left(1 - x\right)\right)} \]
      17. associate--r-100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(\left(0 - 1\right) + x\right)} \]
      18. metadata-eval100.0%

        \[\leadsto 1 + y \cdot \left(\color{blue}{-1} + x\right) \]
      19. +-commutative100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(x + -1\right)} \]
    3. Simplified100.0%

      \[\leadsto \color{blue}{1 + y \cdot \left(x + -1\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in x around 0 98.7%

      \[\leadsto \color{blue}{1 + -1 \cdot y} \]
    6. Step-by-step derivation
      1. neg-mul-198.7%

        \[\leadsto 1 + \color{blue}{\left(-y\right)} \]
      2. unsub-neg98.7%

        \[\leadsto \color{blue}{1 - y} \]
    7. Simplified98.7%

      \[\leadsto \color{blue}{1 - y} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification99.0%

    \[\leadsto \begin{array}{l} \mathbf{if}\;x \leq -1400 \lor \neg \left(x \leq 1.3 \cdot 10^{-8}\right):\\ \;\;\;\;1 + y \cdot x\\ \mathbf{else}:\\ \;\;\;\;1 - y\\ \end{array} \]
  5. Add Preprocessing

Alternative 4: 86.0% accurate, 0.6× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;x \leq -3.4 \cdot 10^{+93}:\\ \;\;\;\;y \cdot x\\ \mathbf{elif}\;x \leq 9.6:\\ \;\;\;\;1 - y\\ \mathbf{else}:\\ \;\;\;\;y \cdot \left(x + -1\right)\\ \end{array} \end{array} \]
(FPCore (x y)
 :precision binary64
 (if (<= x -3.4e+93) (* y x) (if (<= x 9.6) (- 1.0 y) (* y (+ x -1.0)))))
double code(double x, double y) {
	double tmp;
	if (x <= -3.4e+93) {
		tmp = y * x;
	} else if (x <= 9.6) {
		tmp = 1.0 - y;
	} else {
		tmp = y * (x + -1.0);
	}
	return tmp;
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8) :: tmp
    if (x <= (-3.4d+93)) then
        tmp = y * x
    else if (x <= 9.6d0) then
        tmp = 1.0d0 - y
    else
        tmp = y * (x + (-1.0d0))
    end if
    code = tmp
end function
public static double code(double x, double y) {
	double tmp;
	if (x <= -3.4e+93) {
		tmp = y * x;
	} else if (x <= 9.6) {
		tmp = 1.0 - y;
	} else {
		tmp = y * (x + -1.0);
	}
	return tmp;
}
def code(x, y):
	tmp = 0
	if x <= -3.4e+93:
		tmp = y * x
	elif x <= 9.6:
		tmp = 1.0 - y
	else:
		tmp = y * (x + -1.0)
	return tmp
function code(x, y)
	tmp = 0.0
	if (x <= -3.4e+93)
		tmp = Float64(y * x);
	elseif (x <= 9.6)
		tmp = Float64(1.0 - y);
	else
		tmp = Float64(y * Float64(x + -1.0));
	end
	return tmp
end
function tmp_2 = code(x, y)
	tmp = 0.0;
	if (x <= -3.4e+93)
		tmp = y * x;
	elseif (x <= 9.6)
		tmp = 1.0 - y;
	else
		tmp = y * (x + -1.0);
	end
	tmp_2 = tmp;
end
code[x_, y_] := If[LessEqual[x, -3.4e+93], N[(y * x), $MachinePrecision], If[LessEqual[x, 9.6], N[(1.0 - y), $MachinePrecision], N[(y * N[(x + -1.0), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;x \leq -3.4 \cdot 10^{+93}:\\
\;\;\;\;y \cdot x\\

\mathbf{elif}\;x \leq 9.6:\\
\;\;\;\;1 - y\\

\mathbf{else}:\\
\;\;\;\;y \cdot \left(x + -1\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if x < -3.4e93

    1. Initial program 49.9%

      \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
    2. Step-by-step derivation
      1. +-commutative49.9%

        \[\leadsto \color{blue}{\left(1 - x\right) \cdot \left(1 - y\right) + x} \]
      2. remove-double-neg49.9%

        \[\leadsto \left(1 - x\right) \cdot \left(1 - y\right) + \color{blue}{\left(-\left(-x\right)\right)} \]
      3. unsub-neg49.9%

        \[\leadsto \color{blue}{\left(1 - x\right) \cdot \left(1 - y\right) - \left(-x\right)} \]
      4. sub-neg49.9%

        \[\leadsto \left(1 - x\right) \cdot \color{blue}{\left(1 + \left(-y\right)\right)} - \left(-x\right) \]
      5. +-commutative49.9%

        \[\leadsto \left(1 - x\right) \cdot \color{blue}{\left(\left(-y\right) + 1\right)} - \left(-x\right) \]
      6. distribute-rgt-in49.9%

        \[\leadsto \color{blue}{\left(\left(-y\right) \cdot \left(1 - x\right) + 1 \cdot \left(1 - x\right)\right)} - \left(-x\right) \]
      7. *-lft-identity49.9%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + \color{blue}{\left(1 - x\right)}\right) - \left(-x\right) \]
      8. associate-+r-49.9%

        \[\leadsto \color{blue}{\left(\left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - x\right)} - \left(-x\right) \]
      9. associate--l-100.0%

        \[\leadsto \color{blue}{\left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \left(x + \left(-x\right)\right)} \]
      10. sub-neg100.0%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \color{blue}{\left(x - x\right)} \]
      11. +-inverses100.0%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \color{blue}{0} \]
      12. --rgt-identity100.0%

        \[\leadsto \color{blue}{\left(-y\right) \cdot \left(1 - x\right) + 1} \]
      13. +-commutative100.0%

        \[\leadsto \color{blue}{1 + \left(-y\right) \cdot \left(1 - x\right)} \]
      14. distribute-lft-neg-out100.0%

        \[\leadsto 1 + \color{blue}{\left(-y \cdot \left(1 - x\right)\right)} \]
      15. distribute-rgt-neg-in100.0%

        \[\leadsto 1 + \color{blue}{y \cdot \left(-\left(1 - x\right)\right)} \]
      16. neg-sub0100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(0 - \left(1 - x\right)\right)} \]
      17. associate--r-100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(\left(0 - 1\right) + x\right)} \]
      18. metadata-eval100.0%

        \[\leadsto 1 + y \cdot \left(\color{blue}{-1} + x\right) \]
      19. +-commutative100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(x + -1\right)} \]
    3. Simplified100.0%

      \[\leadsto \color{blue}{1 + y \cdot \left(x + -1\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around inf 99.9%

      \[\leadsto \color{blue}{y \cdot \left(\left(x + \frac{1}{y}\right) - 1\right)} \]
    6. Taylor expanded in x around inf 90.2%

      \[\leadsto y \cdot \color{blue}{x} \]

    if -3.4e93 < x < 9.59999999999999964

    1. Initial program 94.2%

      \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
    2. Step-by-step derivation
      1. +-commutative94.2%

        \[\leadsto \color{blue}{\left(1 - x\right) \cdot \left(1 - y\right) + x} \]
      2. remove-double-neg94.2%

        \[\leadsto \left(1 - x\right) \cdot \left(1 - y\right) + \color{blue}{\left(-\left(-x\right)\right)} \]
      3. unsub-neg94.2%

        \[\leadsto \color{blue}{\left(1 - x\right) \cdot \left(1 - y\right) - \left(-x\right)} \]
      4. sub-neg94.2%

        \[\leadsto \left(1 - x\right) \cdot \color{blue}{\left(1 + \left(-y\right)\right)} - \left(-x\right) \]
      5. +-commutative94.2%

        \[\leadsto \left(1 - x\right) \cdot \color{blue}{\left(\left(-y\right) + 1\right)} - \left(-x\right) \]
      6. distribute-rgt-in94.2%

        \[\leadsto \color{blue}{\left(\left(-y\right) \cdot \left(1 - x\right) + 1 \cdot \left(1 - x\right)\right)} - \left(-x\right) \]
      7. *-lft-identity94.2%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + \color{blue}{\left(1 - x\right)}\right) - \left(-x\right) \]
      8. associate-+r-94.2%

        \[\leadsto \color{blue}{\left(\left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - x\right)} - \left(-x\right) \]
      9. associate--l-100.0%

        \[\leadsto \color{blue}{\left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \left(x + \left(-x\right)\right)} \]
      10. sub-neg100.0%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \color{blue}{\left(x - x\right)} \]
      11. +-inverses100.0%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \color{blue}{0} \]
      12. --rgt-identity100.0%

        \[\leadsto \color{blue}{\left(-y\right) \cdot \left(1 - x\right) + 1} \]
      13. +-commutative100.0%

        \[\leadsto \color{blue}{1 + \left(-y\right) \cdot \left(1 - x\right)} \]
      14. distribute-lft-neg-out100.0%

        \[\leadsto 1 + \color{blue}{\left(-y \cdot \left(1 - x\right)\right)} \]
      15. distribute-rgt-neg-in100.0%

        \[\leadsto 1 + \color{blue}{y \cdot \left(-\left(1 - x\right)\right)} \]
      16. neg-sub0100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(0 - \left(1 - x\right)\right)} \]
      17. associate--r-100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(\left(0 - 1\right) + x\right)} \]
      18. metadata-eval100.0%

        \[\leadsto 1 + y \cdot \left(\color{blue}{-1} + x\right) \]
      19. +-commutative100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(x + -1\right)} \]
    3. Simplified100.0%

      \[\leadsto \color{blue}{1 + y \cdot \left(x + -1\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in x around 0 94.1%

      \[\leadsto \color{blue}{1 + -1 \cdot y} \]
    6. Step-by-step derivation
      1. neg-mul-194.1%

        \[\leadsto 1 + \color{blue}{\left(-y\right)} \]
      2. unsub-neg94.1%

        \[\leadsto \color{blue}{1 - y} \]
    7. Simplified94.1%

      \[\leadsto \color{blue}{1 - y} \]

    if 9.59999999999999964 < x

    1. Initial program 57.5%

      \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
    2. Step-by-step derivation
      1. +-commutative57.5%

        \[\leadsto \color{blue}{\left(1 - x\right) \cdot \left(1 - y\right) + x} \]
      2. remove-double-neg57.5%

        \[\leadsto \left(1 - x\right) \cdot \left(1 - y\right) + \color{blue}{\left(-\left(-x\right)\right)} \]
      3. unsub-neg57.5%

        \[\leadsto \color{blue}{\left(1 - x\right) \cdot \left(1 - y\right) - \left(-x\right)} \]
      4. sub-neg57.5%

        \[\leadsto \left(1 - x\right) \cdot \color{blue}{\left(1 + \left(-y\right)\right)} - \left(-x\right) \]
      5. +-commutative57.5%

        \[\leadsto \left(1 - x\right) \cdot \color{blue}{\left(\left(-y\right) + 1\right)} - \left(-x\right) \]
      6. distribute-rgt-in57.5%

        \[\leadsto \color{blue}{\left(\left(-y\right) \cdot \left(1 - x\right) + 1 \cdot \left(1 - x\right)\right)} - \left(-x\right) \]
      7. *-lft-identity57.5%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + \color{blue}{\left(1 - x\right)}\right) - \left(-x\right) \]
      8. associate-+r-57.5%

        \[\leadsto \color{blue}{\left(\left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - x\right)} - \left(-x\right) \]
      9. associate--l-100.0%

        \[\leadsto \color{blue}{\left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \left(x + \left(-x\right)\right)} \]
      10. sub-neg100.0%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \color{blue}{\left(x - x\right)} \]
      11. +-inverses100.0%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \color{blue}{0} \]
      12. --rgt-identity100.0%

        \[\leadsto \color{blue}{\left(-y\right) \cdot \left(1 - x\right) + 1} \]
      13. +-commutative100.0%

        \[\leadsto \color{blue}{1 + \left(-y\right) \cdot \left(1 - x\right)} \]
      14. distribute-lft-neg-out100.0%

        \[\leadsto 1 + \color{blue}{\left(-y \cdot \left(1 - x\right)\right)} \]
      15. distribute-rgt-neg-in100.0%

        \[\leadsto 1 + \color{blue}{y \cdot \left(-\left(1 - x\right)\right)} \]
      16. neg-sub0100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(0 - \left(1 - x\right)\right)} \]
      17. associate--r-100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(\left(0 - 1\right) + x\right)} \]
      18. metadata-eval100.0%

        \[\leadsto 1 + y \cdot \left(\color{blue}{-1} + x\right) \]
      19. +-commutative100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(x + -1\right)} \]
    3. Simplified100.0%

      \[\leadsto \color{blue}{1 + y \cdot \left(x + -1\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around inf 100.0%

      \[\leadsto \color{blue}{y \cdot \left(\left(x + \frac{1}{y}\right) - 1\right)} \]
    6. Taylor expanded in y around inf 82.8%

      \[\leadsto y \cdot \color{blue}{\left(x - 1\right)} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification90.6%

    \[\leadsto \begin{array}{l} \mathbf{if}\;x \leq -3.4 \cdot 10^{+93}:\\ \;\;\;\;y \cdot x\\ \mathbf{elif}\;x \leq 9.6:\\ \;\;\;\;1 - y\\ \mathbf{else}:\\ \;\;\;\;y \cdot \left(x + -1\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 5: 86.0% accurate, 0.7× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;x \leq -1.55 \cdot 10^{+93} \lor \neg \left(x \leq 2.2 \cdot 10^{+16}\right):\\ \;\;\;\;y \cdot x\\ \mathbf{else}:\\ \;\;\;\;1 - y\\ \end{array} \end{array} \]
(FPCore (x y)
 :precision binary64
 (if (or (<= x -1.55e+93) (not (<= x 2.2e+16))) (* y x) (- 1.0 y)))
double code(double x, double y) {
	double tmp;
	if ((x <= -1.55e+93) || !(x <= 2.2e+16)) {
		tmp = y * x;
	} else {
		tmp = 1.0 - y;
	}
	return tmp;
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8) :: tmp
    if ((x <= (-1.55d+93)) .or. (.not. (x <= 2.2d+16))) then
        tmp = y * x
    else
        tmp = 1.0d0 - y
    end if
    code = tmp
end function
public static double code(double x, double y) {
	double tmp;
	if ((x <= -1.55e+93) || !(x <= 2.2e+16)) {
		tmp = y * x;
	} else {
		tmp = 1.0 - y;
	}
	return tmp;
}
def code(x, y):
	tmp = 0
	if (x <= -1.55e+93) or not (x <= 2.2e+16):
		tmp = y * x
	else:
		tmp = 1.0 - y
	return tmp
function code(x, y)
	tmp = 0.0
	if ((x <= -1.55e+93) || !(x <= 2.2e+16))
		tmp = Float64(y * x);
	else
		tmp = Float64(1.0 - y);
	end
	return tmp
end
function tmp_2 = code(x, y)
	tmp = 0.0;
	if ((x <= -1.55e+93) || ~((x <= 2.2e+16)))
		tmp = y * x;
	else
		tmp = 1.0 - y;
	end
	tmp_2 = tmp;
end
code[x_, y_] := If[Or[LessEqual[x, -1.55e+93], N[Not[LessEqual[x, 2.2e+16]], $MachinePrecision]], N[(y * x), $MachinePrecision], N[(1.0 - y), $MachinePrecision]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;x \leq -1.55 \cdot 10^{+93} \lor \neg \left(x \leq 2.2 \cdot 10^{+16}\right):\\
\;\;\;\;y \cdot x\\

\mathbf{else}:\\
\;\;\;\;1 - y\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if x < -1.5500000000000001e93 or 2.2e16 < x

    1. Initial program 52.9%

      \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
    2. Step-by-step derivation
      1. +-commutative52.9%

        \[\leadsto \color{blue}{\left(1 - x\right) \cdot \left(1 - y\right) + x} \]
      2. remove-double-neg52.9%

        \[\leadsto \left(1 - x\right) \cdot \left(1 - y\right) + \color{blue}{\left(-\left(-x\right)\right)} \]
      3. unsub-neg52.9%

        \[\leadsto \color{blue}{\left(1 - x\right) \cdot \left(1 - y\right) - \left(-x\right)} \]
      4. sub-neg52.9%

        \[\leadsto \left(1 - x\right) \cdot \color{blue}{\left(1 + \left(-y\right)\right)} - \left(-x\right) \]
      5. +-commutative52.9%

        \[\leadsto \left(1 - x\right) \cdot \color{blue}{\left(\left(-y\right) + 1\right)} - \left(-x\right) \]
      6. distribute-rgt-in52.9%

        \[\leadsto \color{blue}{\left(\left(-y\right) \cdot \left(1 - x\right) + 1 \cdot \left(1 - x\right)\right)} - \left(-x\right) \]
      7. *-lft-identity52.9%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + \color{blue}{\left(1 - x\right)}\right) - \left(-x\right) \]
      8. associate-+r-52.9%

        \[\leadsto \color{blue}{\left(\left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - x\right)} - \left(-x\right) \]
      9. associate--l-100.0%

        \[\leadsto \color{blue}{\left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \left(x + \left(-x\right)\right)} \]
      10. sub-neg100.0%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \color{blue}{\left(x - x\right)} \]
      11. +-inverses100.0%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \color{blue}{0} \]
      12. --rgt-identity100.0%

        \[\leadsto \color{blue}{\left(-y\right) \cdot \left(1 - x\right) + 1} \]
      13. +-commutative100.0%

        \[\leadsto \color{blue}{1 + \left(-y\right) \cdot \left(1 - x\right)} \]
      14. distribute-lft-neg-out100.0%

        \[\leadsto 1 + \color{blue}{\left(-y \cdot \left(1 - x\right)\right)} \]
      15. distribute-rgt-neg-in100.0%

        \[\leadsto 1 + \color{blue}{y \cdot \left(-\left(1 - x\right)\right)} \]
      16. neg-sub0100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(0 - \left(1 - x\right)\right)} \]
      17. associate--r-100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(\left(0 - 1\right) + x\right)} \]
      18. metadata-eval100.0%

        \[\leadsto 1 + y \cdot \left(\color{blue}{-1} + x\right) \]
      19. +-commutative100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(x + -1\right)} \]
    3. Simplified100.0%

      \[\leadsto \color{blue}{1 + y \cdot \left(x + -1\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around inf 100.0%

      \[\leadsto \color{blue}{y \cdot \left(\left(x + \frac{1}{y}\right) - 1\right)} \]
    6. Taylor expanded in x around inf 86.9%

      \[\leadsto y \cdot \color{blue}{x} \]

    if -1.5500000000000001e93 < x < 2.2e16

    1. Initial program 94.3%

      \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
    2. Step-by-step derivation
      1. +-commutative94.3%

        \[\leadsto \color{blue}{\left(1 - x\right) \cdot \left(1 - y\right) + x} \]
      2. remove-double-neg94.3%

        \[\leadsto \left(1 - x\right) \cdot \left(1 - y\right) + \color{blue}{\left(-\left(-x\right)\right)} \]
      3. unsub-neg94.3%

        \[\leadsto \color{blue}{\left(1 - x\right) \cdot \left(1 - y\right) - \left(-x\right)} \]
      4. sub-neg94.3%

        \[\leadsto \left(1 - x\right) \cdot \color{blue}{\left(1 + \left(-y\right)\right)} - \left(-x\right) \]
      5. +-commutative94.3%

        \[\leadsto \left(1 - x\right) \cdot \color{blue}{\left(\left(-y\right) + 1\right)} - \left(-x\right) \]
      6. distribute-rgt-in94.3%

        \[\leadsto \color{blue}{\left(\left(-y\right) \cdot \left(1 - x\right) + 1 \cdot \left(1 - x\right)\right)} - \left(-x\right) \]
      7. *-lft-identity94.3%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + \color{blue}{\left(1 - x\right)}\right) - \left(-x\right) \]
      8. associate-+r-94.3%

        \[\leadsto \color{blue}{\left(\left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - x\right)} - \left(-x\right) \]
      9. associate--l-100.0%

        \[\leadsto \color{blue}{\left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \left(x + \left(-x\right)\right)} \]
      10. sub-neg100.0%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \color{blue}{\left(x - x\right)} \]
      11. +-inverses100.0%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \color{blue}{0} \]
      12. --rgt-identity100.0%

        \[\leadsto \color{blue}{\left(-y\right) \cdot \left(1 - x\right) + 1} \]
      13. +-commutative100.0%

        \[\leadsto \color{blue}{1 + \left(-y\right) \cdot \left(1 - x\right)} \]
      14. distribute-lft-neg-out100.0%

        \[\leadsto 1 + \color{blue}{\left(-y \cdot \left(1 - x\right)\right)} \]
      15. distribute-rgt-neg-in100.0%

        \[\leadsto 1 + \color{blue}{y \cdot \left(-\left(1 - x\right)\right)} \]
      16. neg-sub0100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(0 - \left(1 - x\right)\right)} \]
      17. associate--r-100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(\left(0 - 1\right) + x\right)} \]
      18. metadata-eval100.0%

        \[\leadsto 1 + y \cdot \left(\color{blue}{-1} + x\right) \]
      19. +-commutative100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(x + -1\right)} \]
    3. Simplified100.0%

      \[\leadsto \color{blue}{1 + y \cdot \left(x + -1\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in x around 0 93.0%

      \[\leadsto \color{blue}{1 + -1 \cdot y} \]
    6. Step-by-step derivation
      1. neg-mul-193.0%

        \[\leadsto 1 + \color{blue}{\left(-y\right)} \]
      2. unsub-neg93.0%

        \[\leadsto \color{blue}{1 - y} \]
    7. Simplified93.0%

      \[\leadsto \color{blue}{1 - y} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification90.6%

    \[\leadsto \begin{array}{l} \mathbf{if}\;x \leq -1.55 \cdot 10^{+93} \lor \neg \left(x \leq 2.2 \cdot 10^{+16}\right):\\ \;\;\;\;y \cdot x\\ \mathbf{else}:\\ \;\;\;\;1 - y\\ \end{array} \]
  5. Add Preprocessing

Alternative 6: 62.4% accurate, 0.7× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;y \leq -1 \lor \neg \left(y \leq 620000000\right):\\ \;\;\;\;-y\\ \mathbf{else}:\\ \;\;\;\;1\\ \end{array} \end{array} \]
(FPCore (x y)
 :precision binary64
 (if (or (<= y -1.0) (not (<= y 620000000.0))) (- y) 1.0))
double code(double x, double y) {
	double tmp;
	if ((y <= -1.0) || !(y <= 620000000.0)) {
		tmp = -y;
	} else {
		tmp = 1.0;
	}
	return tmp;
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8) :: tmp
    if ((y <= (-1.0d0)) .or. (.not. (y <= 620000000.0d0))) then
        tmp = -y
    else
        tmp = 1.0d0
    end if
    code = tmp
end function
public static double code(double x, double y) {
	double tmp;
	if ((y <= -1.0) || !(y <= 620000000.0)) {
		tmp = -y;
	} else {
		tmp = 1.0;
	}
	return tmp;
}
def code(x, y):
	tmp = 0
	if (y <= -1.0) or not (y <= 620000000.0):
		tmp = -y
	else:
		tmp = 1.0
	return tmp
function code(x, y)
	tmp = 0.0
	if ((y <= -1.0) || !(y <= 620000000.0))
		tmp = Float64(-y);
	else
		tmp = 1.0;
	end
	return tmp
end
function tmp_2 = code(x, y)
	tmp = 0.0;
	if ((y <= -1.0) || ~((y <= 620000000.0)))
		tmp = -y;
	else
		tmp = 1.0;
	end
	tmp_2 = tmp;
end
code[x_, y_] := If[Or[LessEqual[y, -1.0], N[Not[LessEqual[y, 620000000.0]], $MachinePrecision]], (-y), 1.0]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;y \leq -1 \lor \neg \left(y \leq 620000000\right):\\
\;\;\;\;-y\\

\mathbf{else}:\\
\;\;\;\;1\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if y < -1 or 6.2e8 < y

    1. Initial program 100.0%

      \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
    2. Step-by-step derivation
      1. +-commutative100.0%

        \[\leadsto \color{blue}{\left(1 - x\right) \cdot \left(1 - y\right) + x} \]
      2. remove-double-neg100.0%

        \[\leadsto \left(1 - x\right) \cdot \left(1 - y\right) + \color{blue}{\left(-\left(-x\right)\right)} \]
      3. unsub-neg100.0%

        \[\leadsto \color{blue}{\left(1 - x\right) \cdot \left(1 - y\right) - \left(-x\right)} \]
      4. sub-neg100.0%

        \[\leadsto \left(1 - x\right) \cdot \color{blue}{\left(1 + \left(-y\right)\right)} - \left(-x\right) \]
      5. +-commutative100.0%

        \[\leadsto \left(1 - x\right) \cdot \color{blue}{\left(\left(-y\right) + 1\right)} - \left(-x\right) \]
      6. distribute-rgt-in100.0%

        \[\leadsto \color{blue}{\left(\left(-y\right) \cdot \left(1 - x\right) + 1 \cdot \left(1 - x\right)\right)} - \left(-x\right) \]
      7. *-lft-identity100.0%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + \color{blue}{\left(1 - x\right)}\right) - \left(-x\right) \]
      8. associate-+r-100.0%

        \[\leadsto \color{blue}{\left(\left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - x\right)} - \left(-x\right) \]
      9. associate--l-100.0%

        \[\leadsto \color{blue}{\left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \left(x + \left(-x\right)\right)} \]
      10. sub-neg100.0%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \color{blue}{\left(x - x\right)} \]
      11. +-inverses100.0%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \color{blue}{0} \]
      12. --rgt-identity100.0%

        \[\leadsto \color{blue}{\left(-y\right) \cdot \left(1 - x\right) + 1} \]
      13. +-commutative100.0%

        \[\leadsto \color{blue}{1 + \left(-y\right) \cdot \left(1 - x\right)} \]
      14. distribute-lft-neg-out100.0%

        \[\leadsto 1 + \color{blue}{\left(-y \cdot \left(1 - x\right)\right)} \]
      15. distribute-rgt-neg-in100.0%

        \[\leadsto 1 + \color{blue}{y \cdot \left(-\left(1 - x\right)\right)} \]
      16. neg-sub0100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(0 - \left(1 - x\right)\right)} \]
      17. associate--r-100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(\left(0 - 1\right) + x\right)} \]
      18. metadata-eval100.0%

        \[\leadsto 1 + y \cdot \left(\color{blue}{-1} + x\right) \]
      19. +-commutative100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(x + -1\right)} \]
    3. Simplified100.0%

      \[\leadsto \color{blue}{1 + y \cdot \left(x + -1\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around inf 100.0%

      \[\leadsto \color{blue}{y \cdot \left(\left(x + \frac{1}{y}\right) - 1\right)} \]
    6. Taylor expanded in y around inf 99.4%

      \[\leadsto y \cdot \color{blue}{\left(x - 1\right)} \]
    7. Taylor expanded in x around 0 54.1%

      \[\leadsto \color{blue}{-1 \cdot y} \]
    8. Step-by-step derivation
      1. neg-mul-154.1%

        \[\leadsto \color{blue}{-y} \]
    9. Simplified54.1%

      \[\leadsto \color{blue}{-y} \]

    if -1 < y < 6.2e8

    1. Initial program 57.0%

      \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
    2. Step-by-step derivation
      1. +-commutative57.0%

        \[\leadsto \color{blue}{\left(1 - x\right) \cdot \left(1 - y\right) + x} \]
      2. remove-double-neg57.0%

        \[\leadsto \left(1 - x\right) \cdot \left(1 - y\right) + \color{blue}{\left(-\left(-x\right)\right)} \]
      3. unsub-neg57.0%

        \[\leadsto \color{blue}{\left(1 - x\right) \cdot \left(1 - y\right) - \left(-x\right)} \]
      4. sub-neg57.0%

        \[\leadsto \left(1 - x\right) \cdot \color{blue}{\left(1 + \left(-y\right)\right)} - \left(-x\right) \]
      5. +-commutative57.0%

        \[\leadsto \left(1 - x\right) \cdot \color{blue}{\left(\left(-y\right) + 1\right)} - \left(-x\right) \]
      6. distribute-rgt-in57.0%

        \[\leadsto \color{blue}{\left(\left(-y\right) \cdot \left(1 - x\right) + 1 \cdot \left(1 - x\right)\right)} - \left(-x\right) \]
      7. *-lft-identity57.0%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + \color{blue}{\left(1 - x\right)}\right) - \left(-x\right) \]
      8. associate-+r-57.0%

        \[\leadsto \color{blue}{\left(\left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - x\right)} - \left(-x\right) \]
      9. associate--l-100.0%

        \[\leadsto \color{blue}{\left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \left(x + \left(-x\right)\right)} \]
      10. sub-neg100.0%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \color{blue}{\left(x - x\right)} \]
      11. +-inverses100.0%

        \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \color{blue}{0} \]
      12. --rgt-identity100.0%

        \[\leadsto \color{blue}{\left(-y\right) \cdot \left(1 - x\right) + 1} \]
      13. +-commutative100.0%

        \[\leadsto \color{blue}{1 + \left(-y\right) \cdot \left(1 - x\right)} \]
      14. distribute-lft-neg-out100.0%

        \[\leadsto 1 + \color{blue}{\left(-y \cdot \left(1 - x\right)\right)} \]
      15. distribute-rgt-neg-in100.0%

        \[\leadsto 1 + \color{blue}{y \cdot \left(-\left(1 - x\right)\right)} \]
      16. neg-sub0100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(0 - \left(1 - x\right)\right)} \]
      17. associate--r-100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(\left(0 - 1\right) + x\right)} \]
      18. metadata-eval100.0%

        \[\leadsto 1 + y \cdot \left(\color{blue}{-1} + x\right) \]
      19. +-commutative100.0%

        \[\leadsto 1 + y \cdot \color{blue}{\left(x + -1\right)} \]
    3. Simplified100.0%

      \[\leadsto \color{blue}{1 + y \cdot \left(x + -1\right)} \]
    4. Add Preprocessing
    5. Taylor expanded in y around 0 67.3%

      \[\leadsto \color{blue}{1} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification60.9%

    \[\leadsto \begin{array}{l} \mathbf{if}\;y \leq -1 \lor \neg \left(y \leq 620000000\right):\\ \;\;\;\;-y\\ \mathbf{else}:\\ \;\;\;\;1\\ \end{array} \]
  5. Add Preprocessing

Alternative 7: 100.0% accurate, 1.3× speedup?

\[\begin{array}{l} \\ 1 + y \cdot \left(x + -1\right) \end{array} \]
(FPCore (x y) :precision binary64 (+ 1.0 (* y (+ x -1.0))))
double code(double x, double y) {
	return 1.0 + (y * (x + -1.0));
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = 1.0d0 + (y * (x + (-1.0d0)))
end function
public static double code(double x, double y) {
	return 1.0 + (y * (x + -1.0));
}
def code(x, y):
	return 1.0 + (y * (x + -1.0))
function code(x, y)
	return Float64(1.0 + Float64(y * Float64(x + -1.0)))
end
function tmp = code(x, y)
	tmp = 1.0 + (y * (x + -1.0));
end
code[x_, y_] := N[(1.0 + N[(y * N[(x + -1.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
1 + y \cdot \left(x + -1\right)
\end{array}
Derivation
  1. Initial program 78.0%

    \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
  2. Step-by-step derivation
    1. +-commutative78.0%

      \[\leadsto \color{blue}{\left(1 - x\right) \cdot \left(1 - y\right) + x} \]
    2. remove-double-neg78.0%

      \[\leadsto \left(1 - x\right) \cdot \left(1 - y\right) + \color{blue}{\left(-\left(-x\right)\right)} \]
    3. unsub-neg78.0%

      \[\leadsto \color{blue}{\left(1 - x\right) \cdot \left(1 - y\right) - \left(-x\right)} \]
    4. sub-neg78.0%

      \[\leadsto \left(1 - x\right) \cdot \color{blue}{\left(1 + \left(-y\right)\right)} - \left(-x\right) \]
    5. +-commutative78.0%

      \[\leadsto \left(1 - x\right) \cdot \color{blue}{\left(\left(-y\right) + 1\right)} - \left(-x\right) \]
    6. distribute-rgt-in78.0%

      \[\leadsto \color{blue}{\left(\left(-y\right) \cdot \left(1 - x\right) + 1 \cdot \left(1 - x\right)\right)} - \left(-x\right) \]
    7. *-lft-identity78.0%

      \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + \color{blue}{\left(1 - x\right)}\right) - \left(-x\right) \]
    8. associate-+r-78.0%

      \[\leadsto \color{blue}{\left(\left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - x\right)} - \left(-x\right) \]
    9. associate--l-100.0%

      \[\leadsto \color{blue}{\left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \left(x + \left(-x\right)\right)} \]
    10. sub-neg100.0%

      \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \color{blue}{\left(x - x\right)} \]
    11. +-inverses100.0%

      \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \color{blue}{0} \]
    12. --rgt-identity100.0%

      \[\leadsto \color{blue}{\left(-y\right) \cdot \left(1 - x\right) + 1} \]
    13. +-commutative100.0%

      \[\leadsto \color{blue}{1 + \left(-y\right) \cdot \left(1 - x\right)} \]
    14. distribute-lft-neg-out100.0%

      \[\leadsto 1 + \color{blue}{\left(-y \cdot \left(1 - x\right)\right)} \]
    15. distribute-rgt-neg-in100.0%

      \[\leadsto 1 + \color{blue}{y \cdot \left(-\left(1 - x\right)\right)} \]
    16. neg-sub0100.0%

      \[\leadsto 1 + y \cdot \color{blue}{\left(0 - \left(1 - x\right)\right)} \]
    17. associate--r-100.0%

      \[\leadsto 1 + y \cdot \color{blue}{\left(\left(0 - 1\right) + x\right)} \]
    18. metadata-eval100.0%

      \[\leadsto 1 + y \cdot \left(\color{blue}{-1} + x\right) \]
    19. +-commutative100.0%

      \[\leadsto 1 + y \cdot \color{blue}{\left(x + -1\right)} \]
  3. Simplified100.0%

    \[\leadsto \color{blue}{1 + y \cdot \left(x + -1\right)} \]
  4. Add Preprocessing
  5. Add Preprocessing

Alternative 8: 38.4% accurate, 9.0× speedup?

\[\begin{array}{l} \\ 1 \end{array} \]
(FPCore (x y) :precision binary64 1.0)
double code(double x, double y) {
	return 1.0;
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = 1.0d0
end function
public static double code(double x, double y) {
	return 1.0;
}
def code(x, y):
	return 1.0
function code(x, y)
	return 1.0
end
function tmp = code(x, y)
	tmp = 1.0;
end
code[x_, y_] := 1.0
\begin{array}{l}

\\
1
\end{array}
Derivation
  1. Initial program 78.0%

    \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
  2. Step-by-step derivation
    1. +-commutative78.0%

      \[\leadsto \color{blue}{\left(1 - x\right) \cdot \left(1 - y\right) + x} \]
    2. remove-double-neg78.0%

      \[\leadsto \left(1 - x\right) \cdot \left(1 - y\right) + \color{blue}{\left(-\left(-x\right)\right)} \]
    3. unsub-neg78.0%

      \[\leadsto \color{blue}{\left(1 - x\right) \cdot \left(1 - y\right) - \left(-x\right)} \]
    4. sub-neg78.0%

      \[\leadsto \left(1 - x\right) \cdot \color{blue}{\left(1 + \left(-y\right)\right)} - \left(-x\right) \]
    5. +-commutative78.0%

      \[\leadsto \left(1 - x\right) \cdot \color{blue}{\left(\left(-y\right) + 1\right)} - \left(-x\right) \]
    6. distribute-rgt-in78.0%

      \[\leadsto \color{blue}{\left(\left(-y\right) \cdot \left(1 - x\right) + 1 \cdot \left(1 - x\right)\right)} - \left(-x\right) \]
    7. *-lft-identity78.0%

      \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + \color{blue}{\left(1 - x\right)}\right) - \left(-x\right) \]
    8. associate-+r-78.0%

      \[\leadsto \color{blue}{\left(\left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - x\right)} - \left(-x\right) \]
    9. associate--l-100.0%

      \[\leadsto \color{blue}{\left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \left(x + \left(-x\right)\right)} \]
    10. sub-neg100.0%

      \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \color{blue}{\left(x - x\right)} \]
    11. +-inverses100.0%

      \[\leadsto \left(\left(-y\right) \cdot \left(1 - x\right) + 1\right) - \color{blue}{0} \]
    12. --rgt-identity100.0%

      \[\leadsto \color{blue}{\left(-y\right) \cdot \left(1 - x\right) + 1} \]
    13. +-commutative100.0%

      \[\leadsto \color{blue}{1 + \left(-y\right) \cdot \left(1 - x\right)} \]
    14. distribute-lft-neg-out100.0%

      \[\leadsto 1 + \color{blue}{\left(-y \cdot \left(1 - x\right)\right)} \]
    15. distribute-rgt-neg-in100.0%

      \[\leadsto 1 + \color{blue}{y \cdot \left(-\left(1 - x\right)\right)} \]
    16. neg-sub0100.0%

      \[\leadsto 1 + y \cdot \color{blue}{\left(0 - \left(1 - x\right)\right)} \]
    17. associate--r-100.0%

      \[\leadsto 1 + y \cdot \color{blue}{\left(\left(0 - 1\right) + x\right)} \]
    18. metadata-eval100.0%

      \[\leadsto 1 + y \cdot \left(\color{blue}{-1} + x\right) \]
    19. +-commutative100.0%

      \[\leadsto 1 + y \cdot \color{blue}{\left(x + -1\right)} \]
  3. Simplified100.0%

    \[\leadsto \color{blue}{1 + y \cdot \left(x + -1\right)} \]
  4. Add Preprocessing
  5. Taylor expanded in y around 0 35.9%

    \[\leadsto \color{blue}{1} \]
  6. Add Preprocessing

Developer Target 1: 100.0% accurate, 1.3× speedup?

\[\begin{array}{l} \\ y \cdot x - \left(y - 1\right) \end{array} \]
(FPCore (x y) :precision binary64 (- (* y x) (- y 1.0)))
double code(double x, double y) {
	return (y * x) - (y - 1.0);
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = (y * x) - (y - 1.0d0)
end function
public static double code(double x, double y) {
	return (y * x) - (y - 1.0);
}
def code(x, y):
	return (y * x) - (y - 1.0)
function code(x, y)
	return Float64(Float64(y * x) - Float64(y - 1.0))
end
function tmp = code(x, y)
	tmp = (y * x) - (y - 1.0);
end
code[x_, y_] := N[(N[(y * x), $MachinePrecision] - N[(y - 1.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
y \cdot x - \left(y - 1\right)
\end{array}

Reproduce

?
herbie shell --seed 2024158 
(FPCore (x y)
  :name "Graphics.Rendering.Chart.Plot.Vectors:renderPlotVectors from Chart-1.5.3"
  :precision binary64

  :alt
  (! :herbie-platform default (- (* y x) (- y 1)))

  (+ x (* (- 1.0 x) (- 1.0 y))))