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

Percentage Accurate: 77.7% → 100.0%
Time: 6.8s
Alternatives: 7
Speedup: 1.5×

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 7 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: 77.7% 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, 1.5× speedup?

\[\begin{array}{l} \\ \mathsf{fma}\left(y, x, 1 - y\right) \end{array} \]
(FPCore (x y) :precision binary64 (fma y x (- 1.0 y)))
double code(double x, double y) {
	return fma(y, x, (1.0 - y));
}
function code(x, y)
	return fma(y, x, Float64(1.0 - y))
end
code[x_, y_] := N[(y * x + N[(1.0 - y), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\mathsf{fma}\left(y, x, 1 - y\right)
\end{array}
Derivation
  1. Initial program 77.2%

    \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
  2. Add Preprocessing
  3. Taylor expanded in x around 0

    \[\leadsto \color{blue}{\left(1 + x \cdot \left(1 + -1 \cdot \left(1 - y\right)\right)\right) - y} \]
  4. Step-by-step derivation
    1. +-commutativeN/A

      \[\leadsto \color{blue}{\left(x \cdot \left(1 + -1 \cdot \left(1 - y\right)\right) + 1\right)} - y \]
    2. associate--l+N/A

      \[\leadsto \color{blue}{x \cdot \left(1 + -1 \cdot \left(1 - y\right)\right) + \left(1 - y\right)} \]
    3. *-commutativeN/A

      \[\leadsto \color{blue}{\left(1 + -1 \cdot \left(1 - y\right)\right) \cdot x} + \left(1 - y\right) \]
    4. mul-1-negN/A

      \[\leadsto \left(1 + \color{blue}{\left(\mathsf{neg}\left(\left(1 - y\right)\right)\right)}\right) \cdot x + \left(1 - y\right) \]
    5. unsub-negN/A

      \[\leadsto \color{blue}{\left(1 - \left(1 - y\right)\right)} \cdot x + \left(1 - y\right) \]
    6. associate--r-N/A

      \[\leadsto \color{blue}{\left(\left(1 - 1\right) + y\right)} \cdot x + \left(1 - y\right) \]
    7. metadata-evalN/A

      \[\leadsto \left(\color{blue}{0} + y\right) \cdot x + \left(1 - y\right) \]
    8. +-lft-identityN/A

      \[\leadsto \color{blue}{y} \cdot x + \left(1 - y\right) \]
    9. lower-fma.f64N/A

      \[\leadsto \color{blue}{\mathsf{fma}\left(y, x, 1 - y\right)} \]
    10. lower--.f64100.0

      \[\leadsto \mathsf{fma}\left(y, x, \color{blue}{1 - y}\right) \]
  5. Applied rewrites100.0%

    \[\leadsto \color{blue}{\mathsf{fma}\left(y, x, 1 - y\right)} \]
  6. Add Preprocessing

Alternative 2: 88.4% accurate, 0.3× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_0 := x + \left(1 - x\right) \cdot \left(1 - y\right)\\ \mathbf{if}\;t\_0 \leq -1 \cdot 10^{+69} \lor \neg \left(t\_0 \leq 5 \cdot 10^{+14}\right):\\ \;\;\;\;\left(x - 1\right) \cdot y\\ \mathbf{else}:\\ \;\;\;\;1 - y\\ \end{array} \end{array} \]
(FPCore (x y)
 :precision binary64
 (let* ((t_0 (+ x (* (- 1.0 x) (- 1.0 y)))))
   (if (or (<= t_0 -1e+69) (not (<= t_0 5e+14))) (* (- x 1.0) y) (- 1.0 y))))
double code(double x, double y) {
	double t_0 = x + ((1.0 - x) * (1.0 - y));
	double tmp;
	if ((t_0 <= -1e+69) || !(t_0 <= 5e+14)) {
		tmp = (x - 1.0) * y;
	} 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) :: t_0
    real(8) :: tmp
    t_0 = x + ((1.0d0 - x) * (1.0d0 - y))
    if ((t_0 <= (-1d+69)) .or. (.not. (t_0 <= 5d+14))) then
        tmp = (x - 1.0d0) * y
    else
        tmp = 1.0d0 - y
    end if
    code = tmp
end function
public static double code(double x, double y) {
	double t_0 = x + ((1.0 - x) * (1.0 - y));
	double tmp;
	if ((t_0 <= -1e+69) || !(t_0 <= 5e+14)) {
		tmp = (x - 1.0) * y;
	} else {
		tmp = 1.0 - y;
	}
	return tmp;
}
def code(x, y):
	t_0 = x + ((1.0 - x) * (1.0 - y))
	tmp = 0
	if (t_0 <= -1e+69) or not (t_0 <= 5e+14):
		tmp = (x - 1.0) * y
	else:
		tmp = 1.0 - y
	return tmp
function code(x, y)
	t_0 = Float64(x + Float64(Float64(1.0 - x) * Float64(1.0 - y)))
	tmp = 0.0
	if ((t_0 <= -1e+69) || !(t_0 <= 5e+14))
		tmp = Float64(Float64(x - 1.0) * y);
	else
		tmp = Float64(1.0 - y);
	end
	return tmp
end
function tmp_2 = code(x, y)
	t_0 = x + ((1.0 - x) * (1.0 - y));
	tmp = 0.0;
	if ((t_0 <= -1e+69) || ~((t_0 <= 5e+14)))
		tmp = (x - 1.0) * y;
	else
		tmp = 1.0 - y;
	end
	tmp_2 = tmp;
end
code[x_, y_] := Block[{t$95$0 = N[(x + N[(N[(1.0 - x), $MachinePrecision] * N[(1.0 - y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[Or[LessEqual[t$95$0, -1e+69], N[Not[LessEqual[t$95$0, 5e+14]], $MachinePrecision]], N[(N[(x - 1.0), $MachinePrecision] * y), $MachinePrecision], N[(1.0 - y), $MachinePrecision]]]
\begin{array}{l}

\\
\begin{array}{l}
t_0 := x + \left(1 - x\right) \cdot \left(1 - y\right)\\
\mathbf{if}\;t\_0 \leq -1 \cdot 10^{+69} \lor \neg \left(t\_0 \leq 5 \cdot 10^{+14}\right):\\
\;\;\;\;\left(x - 1\right) \cdot y\\

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


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if (+.f64 x (*.f64 (-.f64 #s(literal 1 binary64) x) (-.f64 #s(literal 1 binary64) y))) < -1.0000000000000001e69 or 5e14 < (+.f64 x (*.f64 (-.f64 #s(literal 1 binary64) x) (-.f64 #s(literal 1 binary64) y)))

    1. Initial program 99.8%

      \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
    2. Add Preprocessing
    3. Taylor expanded in y around inf

      \[\leadsto \color{blue}{-1 \cdot \left(y \cdot \left(1 - x\right)\right)} \]
    4. Step-by-step derivation
      1. *-commutativeN/A

        \[\leadsto -1 \cdot \color{blue}{\left(\left(1 - x\right) \cdot y\right)} \]
      2. associate-*r*N/A

        \[\leadsto \color{blue}{\left(-1 \cdot \left(1 - x\right)\right) \cdot y} \]
      3. lower-*.f64N/A

        \[\leadsto \color{blue}{\left(-1 \cdot \left(1 - x\right)\right) \cdot y} \]
      4. mul-1-negN/A

        \[\leadsto \color{blue}{\left(\mathsf{neg}\left(\left(1 - x\right)\right)\right)} \cdot y \]
      5. sub-negN/A

        \[\leadsto \left(\mathsf{neg}\left(\color{blue}{\left(1 + \left(\mathsf{neg}\left(x\right)\right)\right)}\right)\right) \cdot y \]
      6. +-commutativeN/A

        \[\leadsto \left(\mathsf{neg}\left(\color{blue}{\left(\left(\mathsf{neg}\left(x\right)\right) + 1\right)}\right)\right) \cdot y \]
      7. distribute-neg-inN/A

        \[\leadsto \color{blue}{\left(\left(\mathsf{neg}\left(\left(\mathsf{neg}\left(x\right)\right)\right)\right) + \left(\mathsf{neg}\left(1\right)\right)\right)} \cdot y \]
      8. remove-double-negN/A

        \[\leadsto \left(\color{blue}{x} + \left(\mathsf{neg}\left(1\right)\right)\right) \cdot y \]
      9. sub-negN/A

        \[\leadsto \color{blue}{\left(x - 1\right)} \cdot y \]
      10. lower--.f64100.0

        \[\leadsto \color{blue}{\left(x - 1\right)} \cdot y \]
    5. Applied rewrites100.0%

      \[\leadsto \color{blue}{\left(x - 1\right) \cdot y} \]

    if -1.0000000000000001e69 < (+.f64 x (*.f64 (-.f64 #s(literal 1 binary64) x) (-.f64 #s(literal 1 binary64) y))) < 5e14

    1. Initial program 58.4%

      \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
    2. Add Preprocessing
    3. Taylor expanded in x around 0

      \[\leadsto \color{blue}{1 - y} \]
    4. Step-by-step derivation
      1. lower--.f6480.6

        \[\leadsto \color{blue}{1 - y} \]
    5. Applied rewrites80.6%

      \[\leadsto \color{blue}{1 - y} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification89.4%

    \[\leadsto \begin{array}{l} \mathbf{if}\;x + \left(1 - x\right) \cdot \left(1 - y\right) \leq -1 \cdot 10^{+69} \lor \neg \left(x + \left(1 - x\right) \cdot \left(1 - y\right) \leq 5 \cdot 10^{+14}\right):\\ \;\;\;\;\left(x - 1\right) \cdot y\\ \mathbf{else}:\\ \;\;\;\;1 - y\\ \end{array} \]
  5. Add Preprocessing

Alternative 3: 88.4% accurate, 0.3× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_0 := x + \left(1 - x\right) \cdot \left(1 - y\right)\\ \mathbf{if}\;t\_0 \leq -1 \cdot 10^{+69}:\\ \;\;\;\;\mathsf{fma}\left(y, x, -y\right)\\ \mathbf{elif}\;t\_0 \leq 5 \cdot 10^{+14}:\\ \;\;\;\;1 - y\\ \mathbf{else}:\\ \;\;\;\;\left(x - 1\right) \cdot y\\ \end{array} \end{array} \]
(FPCore (x y)
 :precision binary64
 (let* ((t_0 (+ x (* (- 1.0 x) (- 1.0 y)))))
   (if (<= t_0 -1e+69)
     (fma y x (- y))
     (if (<= t_0 5e+14) (- 1.0 y) (* (- x 1.0) y)))))
double code(double x, double y) {
	double t_0 = x + ((1.0 - x) * (1.0 - y));
	double tmp;
	if (t_0 <= -1e+69) {
		tmp = fma(y, x, -y);
	} else if (t_0 <= 5e+14) {
		tmp = 1.0 - y;
	} else {
		tmp = (x - 1.0) * y;
	}
	return tmp;
}
function code(x, y)
	t_0 = Float64(x + Float64(Float64(1.0 - x) * Float64(1.0 - y)))
	tmp = 0.0
	if (t_0 <= -1e+69)
		tmp = fma(y, x, Float64(-y));
	elseif (t_0 <= 5e+14)
		tmp = Float64(1.0 - y);
	else
		tmp = Float64(Float64(x - 1.0) * y);
	end
	return tmp
end
code[x_, y_] := Block[{t$95$0 = N[(x + N[(N[(1.0 - x), $MachinePrecision] * N[(1.0 - y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[t$95$0, -1e+69], N[(y * x + (-y)), $MachinePrecision], If[LessEqual[t$95$0, 5e+14], N[(1.0 - y), $MachinePrecision], N[(N[(x - 1.0), $MachinePrecision] * y), $MachinePrecision]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_0 := x + \left(1 - x\right) \cdot \left(1 - y\right)\\
\mathbf{if}\;t\_0 \leq -1 \cdot 10^{+69}:\\
\;\;\;\;\mathsf{fma}\left(y, x, -y\right)\\

\mathbf{elif}\;t\_0 \leq 5 \cdot 10^{+14}:\\
\;\;\;\;1 - y\\

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


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if (+.f64 x (*.f64 (-.f64 #s(literal 1 binary64) x) (-.f64 #s(literal 1 binary64) y))) < -1.0000000000000001e69

    1. Initial program 99.9%

      \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
    2. Add Preprocessing
    3. Taylor expanded in x around inf

      \[\leadsto \color{blue}{x \cdot \left(1 + -1 \cdot \left(1 - y\right)\right)} \]
    4. Step-by-step derivation
      1. *-commutativeN/A

        \[\leadsto \color{blue}{\left(1 + -1 \cdot \left(1 - y\right)\right) \cdot x} \]
      2. mul-1-negN/A

        \[\leadsto \left(1 + \color{blue}{\left(\mathsf{neg}\left(\left(1 - y\right)\right)\right)}\right) \cdot x \]
      3. unsub-negN/A

        \[\leadsto \color{blue}{\left(1 - \left(1 - y\right)\right)} \cdot x \]
      4. associate--r-N/A

        \[\leadsto \color{blue}{\left(\left(1 - 1\right) + y\right)} \cdot x \]
      5. metadata-evalN/A

        \[\leadsto \left(\color{blue}{0} + y\right) \cdot x \]
      6. +-lft-identityN/A

        \[\leadsto \color{blue}{y} \cdot x \]
      7. lower-*.f6453.5

        \[\leadsto \color{blue}{y \cdot x} \]
    5. Applied rewrites53.5%

      \[\leadsto \color{blue}{y \cdot x} \]
    6. Taylor expanded in y around inf

      \[\leadsto \color{blue}{-1 \cdot \left(y \cdot \left(1 - x\right)\right)} \]
    7. Step-by-step derivation
      1. associate-*r*N/A

        \[\leadsto \color{blue}{\left(-1 \cdot y\right) \cdot \left(1 - x\right)} \]
      2. distribute-lft-out--N/A

        \[\leadsto \color{blue}{\left(-1 \cdot y\right) \cdot 1 - \left(-1 \cdot y\right) \cdot x} \]
      3. *-rgt-identityN/A

        \[\leadsto \color{blue}{-1 \cdot y} - \left(-1 \cdot y\right) \cdot x \]
      4. mul-1-negN/A

        \[\leadsto -1 \cdot y - \color{blue}{\left(\mathsf{neg}\left(y\right)\right)} \cdot x \]
      5. cancel-sign-subN/A

        \[\leadsto \color{blue}{-1 \cdot y + y \cdot x} \]
      6. *-commutativeN/A

        \[\leadsto -1 \cdot y + \color{blue}{x \cdot y} \]
      7. +-commutativeN/A

        \[\leadsto \color{blue}{x \cdot y + -1 \cdot y} \]
      8. *-commutativeN/A

        \[\leadsto \color{blue}{y \cdot x} + -1 \cdot y \]
      9. lower-fma.f64N/A

        \[\leadsto \color{blue}{\mathsf{fma}\left(y, x, -1 \cdot y\right)} \]
      10. mul-1-negN/A

        \[\leadsto \mathsf{fma}\left(y, x, \color{blue}{\mathsf{neg}\left(y\right)}\right) \]
      11. lower-neg.f64100.0

        \[\leadsto \mathsf{fma}\left(y, x, \color{blue}{-y}\right) \]
    8. Applied rewrites100.0%

      \[\leadsto \color{blue}{\mathsf{fma}\left(y, x, -y\right)} \]

    if -1.0000000000000001e69 < (+.f64 x (*.f64 (-.f64 #s(literal 1 binary64) x) (-.f64 #s(literal 1 binary64) y))) < 5e14

    1. Initial program 58.4%

      \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
    2. Add Preprocessing
    3. Taylor expanded in x around 0

      \[\leadsto \color{blue}{1 - y} \]
    4. Step-by-step derivation
      1. lower--.f6480.6

        \[\leadsto \color{blue}{1 - y} \]
    5. Applied rewrites80.6%

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

    if 5e14 < (+.f64 x (*.f64 (-.f64 #s(literal 1 binary64) x) (-.f64 #s(literal 1 binary64) y)))

    1. Initial program 99.7%

      \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
    2. Add Preprocessing
    3. Taylor expanded in y around inf

      \[\leadsto \color{blue}{-1 \cdot \left(y \cdot \left(1 - x\right)\right)} \]
    4. Step-by-step derivation
      1. *-commutativeN/A

        \[\leadsto -1 \cdot \color{blue}{\left(\left(1 - x\right) \cdot y\right)} \]
      2. associate-*r*N/A

        \[\leadsto \color{blue}{\left(-1 \cdot \left(1 - x\right)\right) \cdot y} \]
      3. lower-*.f64N/A

        \[\leadsto \color{blue}{\left(-1 \cdot \left(1 - x\right)\right) \cdot y} \]
      4. mul-1-negN/A

        \[\leadsto \color{blue}{\left(\mathsf{neg}\left(\left(1 - x\right)\right)\right)} \cdot y \]
      5. sub-negN/A

        \[\leadsto \left(\mathsf{neg}\left(\color{blue}{\left(1 + \left(\mathsf{neg}\left(x\right)\right)\right)}\right)\right) \cdot y \]
      6. +-commutativeN/A

        \[\leadsto \left(\mathsf{neg}\left(\color{blue}{\left(\left(\mathsf{neg}\left(x\right)\right) + 1\right)}\right)\right) \cdot y \]
      7. distribute-neg-inN/A

        \[\leadsto \color{blue}{\left(\left(\mathsf{neg}\left(\left(\mathsf{neg}\left(x\right)\right)\right)\right) + \left(\mathsf{neg}\left(1\right)\right)\right)} \cdot y \]
      8. remove-double-negN/A

        \[\leadsto \left(\color{blue}{x} + \left(\mathsf{neg}\left(1\right)\right)\right) \cdot y \]
      9. sub-negN/A

        \[\leadsto \color{blue}{\left(x - 1\right)} \cdot y \]
      10. lower--.f64100.0

        \[\leadsto \color{blue}{\left(x - 1\right)} \cdot y \]
    5. Applied rewrites100.0%

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

Alternative 4: 62.6% accurate, 0.7× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;1 - y \leq -10000000000 \lor \neg \left(1 - y \leq 2\right):\\ \;\;\;\;-y\\ \mathbf{else}:\\ \;\;\;\;1\\ \end{array} \end{array} \]
(FPCore (x y)
 :precision binary64
 (if (or (<= (- 1.0 y) -10000000000.0) (not (<= (- 1.0 y) 2.0))) (- y) 1.0))
double code(double x, double y) {
	double tmp;
	if (((1.0 - y) <= -10000000000.0) || !((1.0 - y) <= 2.0)) {
		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 (((1.0d0 - y) <= (-10000000000.0d0)) .or. (.not. ((1.0d0 - y) <= 2.0d0))) then
        tmp = -y
    else
        tmp = 1.0d0
    end if
    code = tmp
end function
public static double code(double x, double y) {
	double tmp;
	if (((1.0 - y) <= -10000000000.0) || !((1.0 - y) <= 2.0)) {
		tmp = -y;
	} else {
		tmp = 1.0;
	}
	return tmp;
}
def code(x, y):
	tmp = 0
	if ((1.0 - y) <= -10000000000.0) or not ((1.0 - y) <= 2.0):
		tmp = -y
	else:
		tmp = 1.0
	return tmp
function code(x, y)
	tmp = 0.0
	if ((Float64(1.0 - y) <= -10000000000.0) || !(Float64(1.0 - y) <= 2.0))
		tmp = Float64(-y);
	else
		tmp = 1.0;
	end
	return tmp
end
function tmp_2 = code(x, y)
	tmp = 0.0;
	if (((1.0 - y) <= -10000000000.0) || ~(((1.0 - y) <= 2.0)))
		tmp = -y;
	else
		tmp = 1.0;
	end
	tmp_2 = tmp;
end
code[x_, y_] := If[Or[LessEqual[N[(1.0 - y), $MachinePrecision], -10000000000.0], N[Not[LessEqual[N[(1.0 - y), $MachinePrecision], 2.0]], $MachinePrecision]], (-y), 1.0]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;1 - y \leq -10000000000 \lor \neg \left(1 - y \leq 2\right):\\
\;\;\;\;-y\\

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


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if (-.f64 #s(literal 1 binary64) y) < -1e10 or 2 < (-.f64 #s(literal 1 binary64) y)

    1. Initial program 100.0%

      \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
    2. Add Preprocessing
    3. Taylor expanded in y around inf

      \[\leadsto \color{blue}{-1 \cdot \left(y \cdot \left(1 - x\right)\right)} \]
    4. Step-by-step derivation
      1. *-commutativeN/A

        \[\leadsto -1 \cdot \color{blue}{\left(\left(1 - x\right) \cdot y\right)} \]
      2. associate-*r*N/A

        \[\leadsto \color{blue}{\left(-1 \cdot \left(1 - x\right)\right) \cdot y} \]
      3. lower-*.f64N/A

        \[\leadsto \color{blue}{\left(-1 \cdot \left(1 - x\right)\right) \cdot y} \]
      4. mul-1-negN/A

        \[\leadsto \color{blue}{\left(\mathsf{neg}\left(\left(1 - x\right)\right)\right)} \cdot y \]
      5. sub-negN/A

        \[\leadsto \left(\mathsf{neg}\left(\color{blue}{\left(1 + \left(\mathsf{neg}\left(x\right)\right)\right)}\right)\right) \cdot y \]
      6. +-commutativeN/A

        \[\leadsto \left(\mathsf{neg}\left(\color{blue}{\left(\left(\mathsf{neg}\left(x\right)\right) + 1\right)}\right)\right) \cdot y \]
      7. distribute-neg-inN/A

        \[\leadsto \color{blue}{\left(\left(\mathsf{neg}\left(\left(\mathsf{neg}\left(x\right)\right)\right)\right) + \left(\mathsf{neg}\left(1\right)\right)\right)} \cdot y \]
      8. remove-double-negN/A

        \[\leadsto \left(\color{blue}{x} + \left(\mathsf{neg}\left(1\right)\right)\right) \cdot y \]
      9. sub-negN/A

        \[\leadsto \color{blue}{\left(x - 1\right)} \cdot y \]
      10. lower--.f6499.5

        \[\leadsto \color{blue}{\left(x - 1\right)} \cdot y \]
    5. Applied rewrites99.5%

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

      \[\leadsto -1 \cdot \color{blue}{y} \]
    7. Step-by-step derivation
      1. Applied rewrites49.8%

        \[\leadsto -y \]

      if -1e10 < (-.f64 #s(literal 1 binary64) y) < 2

      1. Initial program 56.7%

        \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
      2. Add Preprocessing
      3. Taylor expanded in x around inf

        \[\leadsto \color{blue}{x \cdot \left(1 + -1 \cdot \left(1 - y\right)\right)} \]
      4. Step-by-step derivation
        1. *-commutativeN/A

          \[\leadsto \color{blue}{\left(1 + -1 \cdot \left(1 - y\right)\right) \cdot x} \]
        2. mul-1-negN/A

          \[\leadsto \left(1 + \color{blue}{\left(\mathsf{neg}\left(\left(1 - y\right)\right)\right)}\right) \cdot x \]
        3. unsub-negN/A

          \[\leadsto \color{blue}{\left(1 - \left(1 - y\right)\right)} \cdot x \]
        4. associate--r-N/A

          \[\leadsto \color{blue}{\left(\left(1 - 1\right) + y\right)} \cdot x \]
        5. metadata-evalN/A

          \[\leadsto \left(\color{blue}{0} + y\right) \cdot x \]
        6. +-lft-identityN/A

          \[\leadsto \color{blue}{y} \cdot x \]
        7. lower-*.f6420.8

          \[\leadsto \color{blue}{y \cdot x} \]
      5. Applied rewrites20.8%

        \[\leadsto \color{blue}{y \cdot x} \]
      6. Taylor expanded in y around 0

        \[\leadsto \color{blue}{1} \]
      7. Step-by-step derivation
        1. Applied rewrites77.3%

          \[\leadsto \color{blue}{1} \]
      8. Recombined 2 regimes into one program.
      9. Final simplification64.3%

        \[\leadsto \begin{array}{l} \mathbf{if}\;1 - y \leq -10000000000 \lor \neg \left(1 - y \leq 2\right):\\ \;\;\;\;-y\\ \mathbf{else}:\\ \;\;\;\;1\\ \end{array} \]
      10. Add Preprocessing

      Alternative 5: 86.7% accurate, 0.8× speedup?

      \[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;x \leq -2.7 \cdot 10^{+22} \lor \neg \left(x \leq 122000000\right):\\ \;\;\;\;y \cdot x\\ \mathbf{else}:\\ \;\;\;\;1 - y\\ \end{array} \end{array} \]
      (FPCore (x y)
       :precision binary64
       (if (or (<= x -2.7e+22) (not (<= x 122000000.0))) (* y x) (- 1.0 y)))
      double code(double x, double y) {
      	double tmp;
      	if ((x <= -2.7e+22) || !(x <= 122000000.0)) {
      		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 <= (-2.7d+22)) .or. (.not. (x <= 122000000.0d0))) 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 <= -2.7e+22) || !(x <= 122000000.0)) {
      		tmp = y * x;
      	} else {
      		tmp = 1.0 - y;
      	}
      	return tmp;
      }
      
      def code(x, y):
      	tmp = 0
      	if (x <= -2.7e+22) or not (x <= 122000000.0):
      		tmp = y * x
      	else:
      		tmp = 1.0 - y
      	return tmp
      
      function code(x, y)
      	tmp = 0.0
      	if ((x <= -2.7e+22) || !(x <= 122000000.0))
      		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 <= -2.7e+22) || ~((x <= 122000000.0)))
      		tmp = y * x;
      	else
      		tmp = 1.0 - y;
      	end
      	tmp_2 = tmp;
      end
      
      code[x_, y_] := If[Or[LessEqual[x, -2.7e+22], N[Not[LessEqual[x, 122000000.0]], $MachinePrecision]], N[(y * x), $MachinePrecision], N[(1.0 - y), $MachinePrecision]]
      
      \begin{array}{l}
      
      \\
      \begin{array}{l}
      \mathbf{if}\;x \leq -2.7 \cdot 10^{+22} \lor \neg \left(x \leq 122000000\right):\\
      \;\;\;\;y \cdot x\\
      
      \mathbf{else}:\\
      \;\;\;\;1 - y\\
      
      
      \end{array}
      \end{array}
      
      Derivation
      1. Split input into 2 regimes
      2. if x < -2.7000000000000002e22 or 1.22e8 < x

        1. Initial program 52.5%

          \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
        2. Add Preprocessing
        3. Taylor expanded in x around inf

          \[\leadsto \color{blue}{x \cdot \left(1 + -1 \cdot \left(1 - y\right)\right)} \]
        4. Step-by-step derivation
          1. *-commutativeN/A

            \[\leadsto \color{blue}{\left(1 + -1 \cdot \left(1 - y\right)\right) \cdot x} \]
          2. mul-1-negN/A

            \[\leadsto \left(1 + \color{blue}{\left(\mathsf{neg}\left(\left(1 - y\right)\right)\right)}\right) \cdot x \]
          3. unsub-negN/A

            \[\leadsto \color{blue}{\left(1 - \left(1 - y\right)\right)} \cdot x \]
          4. associate--r-N/A

            \[\leadsto \color{blue}{\left(\left(1 - 1\right) + y\right)} \cdot x \]
          5. metadata-evalN/A

            \[\leadsto \left(\color{blue}{0} + y\right) \cdot x \]
          6. +-lft-identityN/A

            \[\leadsto \color{blue}{y} \cdot x \]
          7. lower-*.f6471.2

            \[\leadsto \color{blue}{y \cdot x} \]
        5. Applied rewrites71.2%

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

        if -2.7000000000000002e22 < x < 1.22e8

        1. Initial program 99.3%

          \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
        2. Add Preprocessing
        3. Taylor expanded in x around 0

          \[\leadsto \color{blue}{1 - y} \]
        4. Step-by-step derivation
          1. lower--.f6499.0

            \[\leadsto \color{blue}{1 - y} \]
        5. Applied rewrites99.0%

          \[\leadsto \color{blue}{1 - y} \]
      3. Recombined 2 regimes into one program.
      4. Final simplification85.9%

        \[\leadsto \begin{array}{l} \mathbf{if}\;x \leq -2.7 \cdot 10^{+22} \lor \neg \left(x \leq 122000000\right):\\ \;\;\;\;y \cdot x\\ \mathbf{else}:\\ \;\;\;\;1 - y\\ \end{array} \]
      5. Add Preprocessing

      Alternative 6: 63.7% accurate, 3.8× speedup?

      \[\begin{array}{l} \\ 1 - y \end{array} \]
      (FPCore (x y) :precision binary64 (- 1.0 y))
      double code(double x, double y) {
      	return 1.0 - y;
      }
      
      real(8) function code(x, y)
          real(8), intent (in) :: x
          real(8), intent (in) :: y
          code = 1.0d0 - y
      end function
      
      public static double code(double x, double y) {
      	return 1.0 - y;
      }
      
      def code(x, y):
      	return 1.0 - y
      
      function code(x, y)
      	return Float64(1.0 - y)
      end
      
      function tmp = code(x, y)
      	tmp = 1.0 - y;
      end
      
      code[x_, y_] := N[(1.0 - y), $MachinePrecision]
      
      \begin{array}{l}
      
      \\
      1 - y
      \end{array}
      
      Derivation
      1. Initial program 77.2%

        \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
      2. Add Preprocessing
      3. Taylor expanded in x around 0

        \[\leadsto \color{blue}{1 - y} \]
      4. Step-by-step derivation
        1. lower--.f6465.5

          \[\leadsto \color{blue}{1 - y} \]
      5. Applied rewrites65.5%

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

      Alternative 7: 39.0% accurate, 15.0× 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 77.2%

        \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
      2. Add Preprocessing
      3. Taylor expanded in x around inf

        \[\leadsto \color{blue}{x \cdot \left(1 + -1 \cdot \left(1 - y\right)\right)} \]
      4. Step-by-step derivation
        1. *-commutativeN/A

          \[\leadsto \color{blue}{\left(1 + -1 \cdot \left(1 - y\right)\right) \cdot x} \]
        2. mul-1-negN/A

          \[\leadsto \left(1 + \color{blue}{\left(\mathsf{neg}\left(\left(1 - y\right)\right)\right)}\right) \cdot x \]
        3. unsub-negN/A

          \[\leadsto \color{blue}{\left(1 - \left(1 - y\right)\right)} \cdot x \]
        4. associate--r-N/A

          \[\leadsto \color{blue}{\left(\left(1 - 1\right) + y\right)} \cdot x \]
        5. metadata-evalN/A

          \[\leadsto \left(\color{blue}{0} + y\right) \cdot x \]
        6. +-lft-identityN/A

          \[\leadsto \color{blue}{y} \cdot x \]
        7. lower-*.f6435.3

          \[\leadsto \color{blue}{y \cdot x} \]
      5. Applied rewrites35.3%

        \[\leadsto \color{blue}{y \cdot x} \]
      6. Taylor expanded in y around 0

        \[\leadsto \color{blue}{1} \]
      7. Step-by-step derivation
        1. Applied rewrites42.0%

          \[\leadsto \color{blue}{1} \]
        2. 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 2024313 
        (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))))