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

Percentage Accurate: 76.8% → 100.0%
Time: 2.8s
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));
}
module fmin_fmax_functions
    implicit none
    private
    public fmax
    public fmin

    interface fmax
        module procedure fmax88
        module procedure fmax44
        module procedure fmax84
        module procedure fmax48
    end interface
    interface fmin
        module procedure fmin88
        module procedure fmin44
        module procedure fmin84
        module procedure fmin48
    end interface
contains
    real(8) function fmax88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(4) function fmax44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(8) function fmax84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, max(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmax48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), max(dble(x), y), y /= y), x /= x)
    end function
    real(8) function fmin88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(4) function fmin44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(8) function fmin84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, min(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmin48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), min(dble(x), y), y /= y), x /= x)
    end function
end module

real(8) function code(x, y)
use fmin_fmax_functions
    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: 76.8% 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));
}
module fmin_fmax_functions
    implicit none
    private
    public fmax
    public fmin

    interface fmax
        module procedure fmax88
        module procedure fmax44
        module procedure fmax84
        module procedure fmax48
    end interface
    interface fmin
        module procedure fmin88
        module procedure fmin44
        module procedure fmin84
        module procedure fmin48
    end interface
contains
    real(8) function fmax88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(4) function fmax44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, max(x, y), y /= y), x /= x)
    end function
    real(8) function fmax84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, max(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmax48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), max(dble(x), y), y /= y), x /= x)
    end function
    real(8) function fmin88(x, y) result (res)
        real(8), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(4) function fmin44(x, y) result (res)
        real(4), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(y, merge(x, min(x, y), y /= y), x /= x)
    end function
    real(8) function fmin84(x, y) result(res)
        real(8), intent (in) :: x
        real(4), intent (in) :: y
        res = merge(dble(y), merge(x, min(x, dble(y)), y /= y), x /= x)
    end function
    real(8) function fmin48(x, y) result(res)
        real(4), intent (in) :: x
        real(8), intent (in) :: y
        res = merge(y, merge(dble(x), min(dble(x), y), y /= y), x /= x)
    end function
end module

real(8) function code(x, y)
use fmin_fmax_functions
    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 79.5%

    \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
  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. Applied rewrites100.0%

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

    Alternative 2: 61.1% accurate, 0.3× speedup?

    \[\begin{array}{l} \\ \begin{array}{l} t_0 := x + \left(1 - x\right) \cdot \left(1 - y\right)\\ \mathbf{if}\;t\_0 \leq -5 \cdot 10^{+17} \lor \neg \left(t\_0 \leq 2\right):\\ \;\;\;\;-y\\ \mathbf{else}:\\ \;\;\;\;1\\ \end{array} \end{array} \]
    (FPCore (x y)
     :precision binary64
     (let* ((t_0 (+ x (* (- 1.0 x) (- 1.0 y)))))
       (if (or (<= t_0 -5e+17) (not (<= t_0 2.0))) (- y) 1.0)))
    double code(double x, double y) {
    	double t_0 = x + ((1.0 - x) * (1.0 - y));
    	double tmp;
    	if ((t_0 <= -5e+17) || !(t_0 <= 2.0)) {
    		tmp = -y;
    	} else {
    		tmp = 1.0;
    	}
    	return tmp;
    }
    
    module fmin_fmax_functions
        implicit none
        private
        public fmax
        public fmin
    
        interface fmax
            module procedure fmax88
            module procedure fmax44
            module procedure fmax84
            module procedure fmax48
        end interface
        interface fmin
            module procedure fmin88
            module procedure fmin44
            module procedure fmin84
            module procedure fmin48
        end interface
    contains
        real(8) function fmax88(x, y) result (res)
            real(8), intent (in) :: x
            real(8), intent (in) :: y
            res = merge(y, merge(x, max(x, y), y /= y), x /= x)
        end function
        real(4) function fmax44(x, y) result (res)
            real(4), intent (in) :: x
            real(4), intent (in) :: y
            res = merge(y, merge(x, max(x, y), y /= y), x /= x)
        end function
        real(8) function fmax84(x, y) result(res)
            real(8), intent (in) :: x
            real(4), intent (in) :: y
            res = merge(dble(y), merge(x, max(x, dble(y)), y /= y), x /= x)
        end function
        real(8) function fmax48(x, y) result(res)
            real(4), intent (in) :: x
            real(8), intent (in) :: y
            res = merge(y, merge(dble(x), max(dble(x), y), y /= y), x /= x)
        end function
        real(8) function fmin88(x, y) result (res)
            real(8), intent (in) :: x
            real(8), intent (in) :: y
            res = merge(y, merge(x, min(x, y), y /= y), x /= x)
        end function
        real(4) function fmin44(x, y) result (res)
            real(4), intent (in) :: x
            real(4), intent (in) :: y
            res = merge(y, merge(x, min(x, y), y /= y), x /= x)
        end function
        real(8) function fmin84(x, y) result(res)
            real(8), intent (in) :: x
            real(4), intent (in) :: y
            res = merge(dble(y), merge(x, min(x, dble(y)), y /= y), x /= x)
        end function
        real(8) function fmin48(x, y) result(res)
            real(4), intent (in) :: x
            real(8), intent (in) :: y
            res = merge(y, merge(dble(x), min(dble(x), y), y /= y), x /= x)
        end function
    end module
    
    real(8) function code(x, y)
    use fmin_fmax_functions
        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 <= (-5d+17)) .or. (.not. (t_0 <= 2.0d0))) then
            tmp = -y
        else
            tmp = 1.0d0
        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 <= -5e+17) || !(t_0 <= 2.0)) {
    		tmp = -y;
    	} else {
    		tmp = 1.0;
    	}
    	return tmp;
    }
    
    def code(x, y):
    	t_0 = x + ((1.0 - x) * (1.0 - y))
    	tmp = 0
    	if (t_0 <= -5e+17) or not (t_0 <= 2.0):
    		tmp = -y
    	else:
    		tmp = 1.0
    	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 <= -5e+17) || !(t_0 <= 2.0))
    		tmp = Float64(-y);
    	else
    		tmp = 1.0;
    	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 <= -5e+17) || ~((t_0 <= 2.0)))
    		tmp = -y;
    	else
    		tmp = 1.0;
    	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, -5e+17], N[Not[LessEqual[t$95$0, 2.0]], $MachinePrecision]], (-y), 1.0]]
    
    \begin{array}{l}
    
    \\
    \begin{array}{l}
    t_0 := x + \left(1 - x\right) \cdot \left(1 - y\right)\\
    \mathbf{if}\;t\_0 \leq -5 \cdot 10^{+17} \lor \neg \left(t\_0 \leq 2\right):\\
    \;\;\;\;-y\\
    
    \mathbf{else}:\\
    \;\;\;\;1\\
    
    
    \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))) < -5e17 or 2 < (+.f64 x (*.f64 (-.f64 #s(literal 1 binary64) x) (-.f64 #s(literal 1 binary64) y)))

      1. Initial program 99.3%

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

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

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

        \[\leadsto -1 \cdot \color{blue}{y} \]
      6. Step-by-step derivation
        1. Applied rewrites51.8%

          \[\leadsto -y \]

        if -5e17 < (+.f64 x (*.f64 (-.f64 #s(literal 1 binary64) x) (-.f64 #s(literal 1 binary64) y))) < 2

        1. Initial program 59.8%

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

          \[\leadsto \color{blue}{1} \]
        4. Step-by-step derivation
          1. Applied rewrites83.5%

            \[\leadsto \color{blue}{1} \]
        5. Recombined 2 regimes into one program.
        6. Final simplification67.7%

          \[\leadsto \begin{array}{l} \mathbf{if}\;x + \left(1 - x\right) \cdot \left(1 - y\right) \leq -5 \cdot 10^{+17} \lor \neg \left(x + \left(1 - x\right) \cdot \left(1 - y\right) \leq 2\right):\\ \;\;\;\;-y\\ \mathbf{else}:\\ \;\;\;\;1\\ \end{array} \]
        7. Add Preprocessing

        Alternative 3: 98.8% accurate, 0.7× speedup?

        \[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;y \leq -1 \lor \neg \left(y \leq 1.14 \cdot 10^{-10}\right):\\ \;\;\;\;y \cdot x - y\\ \mathbf{else}:\\ \;\;\;\;\mathsf{fma}\left(y, x, 1\right)\\ \end{array} \end{array} \]
        (FPCore (x y)
         :precision binary64
         (if (or (<= y -1.0) (not (<= y 1.14e-10))) (- (* y x) y) (fma y x 1.0)))
        double code(double x, double y) {
        	double tmp;
        	if ((y <= -1.0) || !(y <= 1.14e-10)) {
        		tmp = (y * x) - y;
        	} else {
        		tmp = fma(y, x, 1.0);
        	}
        	return tmp;
        }
        
        function code(x, y)
        	tmp = 0.0
        	if ((y <= -1.0) || !(y <= 1.14e-10))
        		tmp = Float64(Float64(y * x) - y);
        	else
        		tmp = fma(y, x, 1.0);
        	end
        	return tmp
        end
        
        code[x_, y_] := If[Or[LessEqual[y, -1.0], N[Not[LessEqual[y, 1.14e-10]], $MachinePrecision]], N[(N[(y * x), $MachinePrecision] - y), $MachinePrecision], N[(y * x + 1.0), $MachinePrecision]]
        
        \begin{array}{l}
        
        \\
        \begin{array}{l}
        \mathbf{if}\;y \leq -1 \lor \neg \left(y \leq 1.14 \cdot 10^{-10}\right):\\
        \;\;\;\;y \cdot x - y\\
        
        \mathbf{else}:\\
        \;\;\;\;\mathsf{fma}\left(y, x, 1\right)\\
        
        
        \end{array}
        \end{array}
        
        Derivation
        1. Split input into 2 regimes
        2. if y < -1 or 1.1399999999999999e-10 < y

          1. Initial program 99.6%

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

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

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

          if -1 < y < 1.1399999999999999e-10

          1. Initial program 59.7%

            \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
          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. Applied rewrites100.0%

              \[\leadsto \color{blue}{\mathsf{fma}\left(y, x, 1 - y\right)} \]
            2. Taylor expanded in y around 0

              \[\leadsto \mathsf{fma}\left(y, x, 1\right) \]
            3. Step-by-step derivation
              1. Applied rewrites99.0%

                \[\leadsto \mathsf{fma}\left(y, x, 1\right) \]
            4. Recombined 2 regimes into one program.
            5. Final simplification99.5%

              \[\leadsto \begin{array}{l} \mathbf{if}\;y \leq -1 \lor \neg \left(y \leq 1.14 \cdot 10^{-10}\right):\\ \;\;\;\;y \cdot x - y\\ \mathbf{else}:\\ \;\;\;\;\mathsf{fma}\left(y, x, 1\right)\\ \end{array} \]
            6. Add Preprocessing

            Alternative 4: 98.8% accurate, 0.8× speedup?

            \[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;x \leq -11000000 \lor \neg \left(x \leq 2 \cdot 10^{-7}\right):\\ \;\;\;\;\mathsf{fma}\left(y, x, 1\right)\\ \mathbf{else}:\\ \;\;\;\;1 - y\\ \end{array} \end{array} \]
            (FPCore (x y)
             :precision binary64
             (if (or (<= x -11000000.0) (not (<= x 2e-7))) (fma y x 1.0) (- 1.0 y)))
            double code(double x, double y) {
            	double tmp;
            	if ((x <= -11000000.0) || !(x <= 2e-7)) {
            		tmp = fma(y, x, 1.0);
            	} else {
            		tmp = 1.0 - y;
            	}
            	return tmp;
            }
            
            function code(x, y)
            	tmp = 0.0
            	if ((x <= -11000000.0) || !(x <= 2e-7))
            		tmp = fma(y, x, 1.0);
            	else
            		tmp = Float64(1.0 - y);
            	end
            	return tmp
            end
            
            code[x_, y_] := If[Or[LessEqual[x, -11000000.0], N[Not[LessEqual[x, 2e-7]], $MachinePrecision]], N[(y * x + 1.0), $MachinePrecision], N[(1.0 - y), $MachinePrecision]]
            
            \begin{array}{l}
            
            \\
            \begin{array}{l}
            \mathbf{if}\;x \leq -11000000 \lor \neg \left(x \leq 2 \cdot 10^{-7}\right):\\
            \;\;\;\;\mathsf{fma}\left(y, x, 1\right)\\
            
            \mathbf{else}:\\
            \;\;\;\;1 - y\\
            
            
            \end{array}
            \end{array}
            
            Derivation
            1. Split input into 2 regimes
            2. if x < -1.1e7 or 1.9999999999999999e-7 < x

              1. Initial program 56.3%

                \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
              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. Applied rewrites100.0%

                  \[\leadsto \color{blue}{\mathsf{fma}\left(y, x, 1 - y\right)} \]
                2. Taylor expanded in y around 0

                  \[\leadsto \mathsf{fma}\left(y, x, 1\right) \]
                3. Step-by-step derivation
                  1. Applied rewrites99.4%

                    \[\leadsto \mathsf{fma}\left(y, x, 1\right) \]

                  if -1.1e7 < x < 1.9999999999999999e-7

                  1. Initial program 100.0%

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

                    \[\leadsto \color{blue}{1 - y} \]
                  4. Step-by-step derivation
                    1. Applied rewrites98.7%

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

                    \[\leadsto \begin{array}{l} \mathbf{if}\;x \leq -11000000 \lor \neg \left(x \leq 2 \cdot 10^{-7}\right):\\ \;\;\;\;\mathsf{fma}\left(y, x, 1\right)\\ \mathbf{else}:\\ \;\;\;\;1 - y\\ \end{array} \]
                  7. Add Preprocessing

                  Alternative 5: 86.4% accurate, 0.8× speedup?

                  \[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;x \leq -36000000000 \lor \neg \left(x \leq 1.12 \cdot 10^{+63}\right):\\ \;\;\;\;y \cdot x\\ \mathbf{else}:\\ \;\;\;\;1 - y\\ \end{array} \end{array} \]
                  (FPCore (x y)
                   :precision binary64
                   (if (or (<= x -36000000000.0) (not (<= x 1.12e+63))) (* y x) (- 1.0 y)))
                  double code(double x, double y) {
                  	double tmp;
                  	if ((x <= -36000000000.0) || !(x <= 1.12e+63)) {
                  		tmp = y * x;
                  	} else {
                  		tmp = 1.0 - y;
                  	}
                  	return tmp;
                  }
                  
                  module fmin_fmax_functions
                      implicit none
                      private
                      public fmax
                      public fmin
                  
                      interface fmax
                          module procedure fmax88
                          module procedure fmax44
                          module procedure fmax84
                          module procedure fmax48
                      end interface
                      interface fmin
                          module procedure fmin88
                          module procedure fmin44
                          module procedure fmin84
                          module procedure fmin48
                      end interface
                  contains
                      real(8) function fmax88(x, y) result (res)
                          real(8), intent (in) :: x
                          real(8), intent (in) :: y
                          res = merge(y, merge(x, max(x, y), y /= y), x /= x)
                      end function
                      real(4) function fmax44(x, y) result (res)
                          real(4), intent (in) :: x
                          real(4), intent (in) :: y
                          res = merge(y, merge(x, max(x, y), y /= y), x /= x)
                      end function
                      real(8) function fmax84(x, y) result(res)
                          real(8), intent (in) :: x
                          real(4), intent (in) :: y
                          res = merge(dble(y), merge(x, max(x, dble(y)), y /= y), x /= x)
                      end function
                      real(8) function fmax48(x, y) result(res)
                          real(4), intent (in) :: x
                          real(8), intent (in) :: y
                          res = merge(y, merge(dble(x), max(dble(x), y), y /= y), x /= x)
                      end function
                      real(8) function fmin88(x, y) result (res)
                          real(8), intent (in) :: x
                          real(8), intent (in) :: y
                          res = merge(y, merge(x, min(x, y), y /= y), x /= x)
                      end function
                      real(4) function fmin44(x, y) result (res)
                          real(4), intent (in) :: x
                          real(4), intent (in) :: y
                          res = merge(y, merge(x, min(x, y), y /= y), x /= x)
                      end function
                      real(8) function fmin84(x, y) result(res)
                          real(8), intent (in) :: x
                          real(4), intent (in) :: y
                          res = merge(dble(y), merge(x, min(x, dble(y)), y /= y), x /= x)
                      end function
                      real(8) function fmin48(x, y) result(res)
                          real(4), intent (in) :: x
                          real(8), intent (in) :: y
                          res = merge(y, merge(dble(x), min(dble(x), y), y /= y), x /= x)
                      end function
                  end module
                  
                  real(8) function code(x, y)
                  use fmin_fmax_functions
                      real(8), intent (in) :: x
                      real(8), intent (in) :: y
                      real(8) :: tmp
                      if ((x <= (-36000000000.0d0)) .or. (.not. (x <= 1.12d+63))) 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 <= -36000000000.0) || !(x <= 1.12e+63)) {
                  		tmp = y * x;
                  	} else {
                  		tmp = 1.0 - y;
                  	}
                  	return tmp;
                  }
                  
                  def code(x, y):
                  	tmp = 0
                  	if (x <= -36000000000.0) or not (x <= 1.12e+63):
                  		tmp = y * x
                  	else:
                  		tmp = 1.0 - y
                  	return tmp
                  
                  function code(x, y)
                  	tmp = 0.0
                  	if ((x <= -36000000000.0) || !(x <= 1.12e+63))
                  		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 <= -36000000000.0) || ~((x <= 1.12e+63)))
                  		tmp = y * x;
                  	else
                  		tmp = 1.0 - y;
                  	end
                  	tmp_2 = tmp;
                  end
                  
                  code[x_, y_] := If[Or[LessEqual[x, -36000000000.0], N[Not[LessEqual[x, 1.12e+63]], $MachinePrecision]], N[(y * x), $MachinePrecision], N[(1.0 - y), $MachinePrecision]]
                  
                  \begin{array}{l}
                  
                  \\
                  \begin{array}{l}
                  \mathbf{if}\;x \leq -36000000000 \lor \neg \left(x \leq 1.12 \cdot 10^{+63}\right):\\
                  \;\;\;\;y \cdot x\\
                  
                  \mathbf{else}:\\
                  \;\;\;\;1 - y\\
                  
                  
                  \end{array}
                  \end{array}
                  
                  Derivation
                  1. Split input into 2 regimes
                  2. if x < -3.6e10 or 1.12000000000000006e63 < x

                    1. Initial program 56.1%

                      \[x + \left(1 - x\right) \cdot \left(1 - y\right) \]
                    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. Applied rewrites76.0%

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

                      if -3.6e10 < x < 1.12000000000000006e63

                      1. Initial program 95.5%

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

                        \[\leadsto \color{blue}{1 - y} \]
                      4. Step-by-step derivation
                        1. Applied rewrites96.3%

                          \[\leadsto \color{blue}{1 - y} \]
                      5. Recombined 2 regimes into one program.
                      6. Final simplification88.0%

                        \[\leadsto \begin{array}{l} \mathbf{if}\;x \leq -36000000000 \lor \neg \left(x \leq 1.12 \cdot 10^{+63}\right):\\ \;\;\;\;y \cdot x\\ \mathbf{else}:\\ \;\;\;\;1 - y\\ \end{array} \]
                      7. Add Preprocessing

                      Alternative 6: 62.4% 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;
                      }
                      
                      module fmin_fmax_functions
                          implicit none
                          private
                          public fmax
                          public fmin
                      
                          interface fmax
                              module procedure fmax88
                              module procedure fmax44
                              module procedure fmax84
                              module procedure fmax48
                          end interface
                          interface fmin
                              module procedure fmin88
                              module procedure fmin44
                              module procedure fmin84
                              module procedure fmin48
                          end interface
                      contains
                          real(8) function fmax88(x, y) result (res)
                              real(8), intent (in) :: x
                              real(8), intent (in) :: y
                              res = merge(y, merge(x, max(x, y), y /= y), x /= x)
                          end function
                          real(4) function fmax44(x, y) result (res)
                              real(4), intent (in) :: x
                              real(4), intent (in) :: y
                              res = merge(y, merge(x, max(x, y), y /= y), x /= x)
                          end function
                          real(8) function fmax84(x, y) result(res)
                              real(8), intent (in) :: x
                              real(4), intent (in) :: y
                              res = merge(dble(y), merge(x, max(x, dble(y)), y /= y), x /= x)
                          end function
                          real(8) function fmax48(x, y) result(res)
                              real(4), intent (in) :: x
                              real(8), intent (in) :: y
                              res = merge(y, merge(dble(x), max(dble(x), y), y /= y), x /= x)
                          end function
                          real(8) function fmin88(x, y) result (res)
                              real(8), intent (in) :: x
                              real(8), intent (in) :: y
                              res = merge(y, merge(x, min(x, y), y /= y), x /= x)
                          end function
                          real(4) function fmin44(x, y) result (res)
                              real(4), intent (in) :: x
                              real(4), intent (in) :: y
                              res = merge(y, merge(x, min(x, y), y /= y), x /= x)
                          end function
                          real(8) function fmin84(x, y) result(res)
                              real(8), intent (in) :: x
                              real(4), intent (in) :: y
                              res = merge(dble(y), merge(x, min(x, dble(y)), y /= y), x /= x)
                          end function
                          real(8) function fmin48(x, y) result(res)
                              real(4), intent (in) :: x
                              real(8), intent (in) :: y
                              res = merge(y, merge(dble(x), min(dble(x), y), y /= y), x /= x)
                          end function
                      end module
                      
                      real(8) function code(x, y)
                      use fmin_fmax_functions
                          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 79.5%

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

                        \[\leadsto \color{blue}{1 - y} \]
                      4. Step-by-step derivation
                        1. Applied rewrites68.1%

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

                        Alternative 7: 38.6% 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;
                        }
                        
                        module fmin_fmax_functions
                            implicit none
                            private
                            public fmax
                            public fmin
                        
                            interface fmax
                                module procedure fmax88
                                module procedure fmax44
                                module procedure fmax84
                                module procedure fmax48
                            end interface
                            interface fmin
                                module procedure fmin88
                                module procedure fmin44
                                module procedure fmin84
                                module procedure fmin48
                            end interface
                        contains
                            real(8) function fmax88(x, y) result (res)
                                real(8), intent (in) :: x
                                real(8), intent (in) :: y
                                res = merge(y, merge(x, max(x, y), y /= y), x /= x)
                            end function
                            real(4) function fmax44(x, y) result (res)
                                real(4), intent (in) :: x
                                real(4), intent (in) :: y
                                res = merge(y, merge(x, max(x, y), y /= y), x /= x)
                            end function
                            real(8) function fmax84(x, y) result(res)
                                real(8), intent (in) :: x
                                real(4), intent (in) :: y
                                res = merge(dble(y), merge(x, max(x, dble(y)), y /= y), x /= x)
                            end function
                            real(8) function fmax48(x, y) result(res)
                                real(4), intent (in) :: x
                                real(8), intent (in) :: y
                                res = merge(y, merge(dble(x), max(dble(x), y), y /= y), x /= x)
                            end function
                            real(8) function fmin88(x, y) result (res)
                                real(8), intent (in) :: x
                                real(8), intent (in) :: y
                                res = merge(y, merge(x, min(x, y), y /= y), x /= x)
                            end function
                            real(4) function fmin44(x, y) result (res)
                                real(4), intent (in) :: x
                                real(4), intent (in) :: y
                                res = merge(y, merge(x, min(x, y), y /= y), x /= x)
                            end function
                            real(8) function fmin84(x, y) result(res)
                                real(8), intent (in) :: x
                                real(4), intent (in) :: y
                                res = merge(dble(y), merge(x, min(x, dble(y)), y /= y), x /= x)
                            end function
                            real(8) function fmin48(x, y) result(res)
                                real(4), intent (in) :: x
                                real(8), intent (in) :: y
                                res = merge(y, merge(dble(x), min(dble(x), y), y /= y), x /= x)
                            end function
                        end module
                        
                        real(8) function code(x, y)
                        use fmin_fmax_functions
                            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 79.5%

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

                          \[\leadsto \color{blue}{1} \]
                        4. Step-by-step derivation
                          1. Applied rewrites43.0%

                            \[\leadsto \color{blue}{1} \]
                          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);
                          }
                          
                          module fmin_fmax_functions
                              implicit none
                              private
                              public fmax
                              public fmin
                          
                              interface fmax
                                  module procedure fmax88
                                  module procedure fmax44
                                  module procedure fmax84
                                  module procedure fmax48
                              end interface
                              interface fmin
                                  module procedure fmin88
                                  module procedure fmin44
                                  module procedure fmin84
                                  module procedure fmin48
                              end interface
                          contains
                              real(8) function fmax88(x, y) result (res)
                                  real(8), intent (in) :: x
                                  real(8), intent (in) :: y
                                  res = merge(y, merge(x, max(x, y), y /= y), x /= x)
                              end function
                              real(4) function fmax44(x, y) result (res)
                                  real(4), intent (in) :: x
                                  real(4), intent (in) :: y
                                  res = merge(y, merge(x, max(x, y), y /= y), x /= x)
                              end function
                              real(8) function fmax84(x, y) result(res)
                                  real(8), intent (in) :: x
                                  real(4), intent (in) :: y
                                  res = merge(dble(y), merge(x, max(x, dble(y)), y /= y), x /= x)
                              end function
                              real(8) function fmax48(x, y) result(res)
                                  real(4), intent (in) :: x
                                  real(8), intent (in) :: y
                                  res = merge(y, merge(dble(x), max(dble(x), y), y /= y), x /= x)
                              end function
                              real(8) function fmin88(x, y) result (res)
                                  real(8), intent (in) :: x
                                  real(8), intent (in) :: y
                                  res = merge(y, merge(x, min(x, y), y /= y), x /= x)
                              end function
                              real(4) function fmin44(x, y) result (res)
                                  real(4), intent (in) :: x
                                  real(4), intent (in) :: y
                                  res = merge(y, merge(x, min(x, y), y /= y), x /= x)
                              end function
                              real(8) function fmin84(x, y) result(res)
                                  real(8), intent (in) :: x
                                  real(4), intent (in) :: y
                                  res = merge(dble(y), merge(x, min(x, dble(y)), y /= y), x /= x)
                              end function
                              real(8) function fmin48(x, y) result(res)
                                  real(4), intent (in) :: x
                                  real(8), intent (in) :: y
                                  res = merge(y, merge(dble(x), min(dble(x), y), y /= y), x /= x)
                              end function
                          end module
                          
                          real(8) function code(x, y)
                          use fmin_fmax_functions
                              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 2025018 
                          (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))))