Optimisation.CirclePacking:place from circle-packing-0.1.0.4, G

Percentage Accurate: 100.0% → 100.0%
Time: 4.3s
Alternatives: 6
Speedup: 1.0×

Specification

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

\\
\left(x + y\right) \cdot \left(z + 1\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 6 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: 100.0% accurate, 1.0× speedup?

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

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

Alternative 1: 100.0% accurate, 1.0× speedup?

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

\\
\left(1 + z\right) \cdot \left(y + x\right)
\end{array}
Derivation
  1. Initial program 100.0%

    \[\left(x + y\right) \cdot \left(z + 1\right) \]
  2. Add Preprocessing
  3. Final simplification100.0%

    \[\leadsto \left(1 + z\right) \cdot \left(y + x\right) \]
  4. Add Preprocessing

Alternative 2: 74.3% accurate, 0.4× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;1 + z \leq -2 \cdot 10^{+227}:\\ \;\;\;\;z \cdot x\\ \mathbf{elif}\;1 + z \leq -200:\\ \;\;\;\;z \cdot y\\ \mathbf{elif}\;1 + z \leq 2:\\ \;\;\;\;y + x\\ \mathbf{else}:\\ \;\;\;\;z \cdot y\\ \end{array} \end{array} \]
(FPCore (x y z)
 :precision binary64
 (if (<= (+ 1.0 z) -2e+227)
   (* z x)
   (if (<= (+ 1.0 z) -200.0) (* z y) (if (<= (+ 1.0 z) 2.0) (+ y x) (* z y)))))
double code(double x, double y, double z) {
	double tmp;
	if ((1.0 + z) <= -2e+227) {
		tmp = z * x;
	} else if ((1.0 + z) <= -200.0) {
		tmp = z * y;
	} else if ((1.0 + z) <= 2.0) {
		tmp = y + x;
	} else {
		tmp = z * y;
	}
	return tmp;
}
real(8) function code(x, y, z)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8) :: tmp
    if ((1.0d0 + z) <= (-2d+227)) then
        tmp = z * x
    else if ((1.0d0 + z) <= (-200.0d0)) then
        tmp = z * y
    else if ((1.0d0 + z) <= 2.0d0) then
        tmp = y + x
    else
        tmp = z * y
    end if
    code = tmp
end function
public static double code(double x, double y, double z) {
	double tmp;
	if ((1.0 + z) <= -2e+227) {
		tmp = z * x;
	} else if ((1.0 + z) <= -200.0) {
		tmp = z * y;
	} else if ((1.0 + z) <= 2.0) {
		tmp = y + x;
	} else {
		tmp = z * y;
	}
	return tmp;
}
def code(x, y, z):
	tmp = 0
	if (1.0 + z) <= -2e+227:
		tmp = z * x
	elif (1.0 + z) <= -200.0:
		tmp = z * y
	elif (1.0 + z) <= 2.0:
		tmp = y + x
	else:
		tmp = z * y
	return tmp
function code(x, y, z)
	tmp = 0.0
	if (Float64(1.0 + z) <= -2e+227)
		tmp = Float64(z * x);
	elseif (Float64(1.0 + z) <= -200.0)
		tmp = Float64(z * y);
	elseif (Float64(1.0 + z) <= 2.0)
		tmp = Float64(y + x);
	else
		tmp = Float64(z * y);
	end
	return tmp
end
function tmp_2 = code(x, y, z)
	tmp = 0.0;
	if ((1.0 + z) <= -2e+227)
		tmp = z * x;
	elseif ((1.0 + z) <= -200.0)
		tmp = z * y;
	elseif ((1.0 + z) <= 2.0)
		tmp = y + x;
	else
		tmp = z * y;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_] := If[LessEqual[N[(1.0 + z), $MachinePrecision], -2e+227], N[(z * x), $MachinePrecision], If[LessEqual[N[(1.0 + z), $MachinePrecision], -200.0], N[(z * y), $MachinePrecision], If[LessEqual[N[(1.0 + z), $MachinePrecision], 2.0], N[(y + x), $MachinePrecision], N[(z * y), $MachinePrecision]]]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;1 + z \leq -2 \cdot 10^{+227}:\\
\;\;\;\;z \cdot x\\

\mathbf{elif}\;1 + z \leq -200:\\
\;\;\;\;z \cdot y\\

\mathbf{elif}\;1 + z \leq 2:\\
\;\;\;\;y + x\\

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


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if (+.f64 z #s(literal 1 binary64)) < -2.0000000000000002e227

    1. Initial program 100.0%

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

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

        \[\leadsto x \cdot \color{blue}{\left(z + 1\right)} \]
      2. distribute-rgt-inN/A

        \[\leadsto \color{blue}{z \cdot x + 1 \cdot x} \]
      3. *-lft-identityN/A

        \[\leadsto z \cdot x + \color{blue}{x} \]
      4. lower-fma.f6473.8

        \[\leadsto \color{blue}{\mathsf{fma}\left(z, x, x\right)} \]
    5. Applied rewrites73.8%

      \[\leadsto \color{blue}{\mathsf{fma}\left(z, x, x\right)} \]
    6. Taylor expanded in z around inf

      \[\leadsto x \cdot \color{blue}{z} \]
    7. Step-by-step derivation
      1. Applied rewrites73.8%

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

      if -2.0000000000000002e227 < (+.f64 z #s(literal 1 binary64)) < -200 or 2 < (+.f64 z #s(literal 1 binary64))

      1. Initial program 100.0%

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

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

          \[\leadsto y \cdot \color{blue}{\left(z + 1\right)} \]
        2. distribute-rgt-inN/A

          \[\leadsto \color{blue}{z \cdot y + 1 \cdot y} \]
        3. *-lft-identityN/A

          \[\leadsto z \cdot y + \color{blue}{y} \]
        4. lower-fma.f6447.2

          \[\leadsto \color{blue}{\mathsf{fma}\left(z, y, y\right)} \]
      5. Applied rewrites47.2%

        \[\leadsto \color{blue}{\mathsf{fma}\left(z, y, y\right)} \]
      6. Taylor expanded in z around inf

        \[\leadsto y \cdot \color{blue}{z} \]
      7. Step-by-step derivation
        1. Applied rewrites45.6%

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

        if -200 < (+.f64 z #s(literal 1 binary64)) < 2

        1. Initial program 100.0%

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

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

            \[\leadsto \color{blue}{y + x} \]
          2. lower-+.f6497.3

            \[\leadsto \color{blue}{y + x} \]
        5. Applied rewrites97.3%

          \[\leadsto \color{blue}{y + x} \]
      8. Recombined 3 regimes into one program.
      9. Final simplification77.7%

        \[\leadsto \begin{array}{l} \mathbf{if}\;1 + z \leq -2 \cdot 10^{+227}:\\ \;\;\;\;z \cdot x\\ \mathbf{elif}\;1 + z \leq -200:\\ \;\;\;\;z \cdot y\\ \mathbf{elif}\;1 + z \leq 2:\\ \;\;\;\;y + x\\ \mathbf{else}:\\ \;\;\;\;z \cdot y\\ \end{array} \]
      10. Add Preprocessing

      Alternative 3: 75.0% accurate, 0.5× speedup?

      \[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;1 + z \leq -200:\\ \;\;\;\;z \cdot x\\ \mathbf{elif}\;1 + z \leq 4000:\\ \;\;\;\;y + x\\ \mathbf{else}:\\ \;\;\;\;z \cdot x\\ \end{array} \end{array} \]
      (FPCore (x y z)
       :precision binary64
       (if (<= (+ 1.0 z) -200.0) (* z x) (if (<= (+ 1.0 z) 4000.0) (+ y x) (* z x))))
      double code(double x, double y, double z) {
      	double tmp;
      	if ((1.0 + z) <= -200.0) {
      		tmp = z * x;
      	} else if ((1.0 + z) <= 4000.0) {
      		tmp = y + x;
      	} else {
      		tmp = z * x;
      	}
      	return tmp;
      }
      
      real(8) function code(x, y, z)
          real(8), intent (in) :: x
          real(8), intent (in) :: y
          real(8), intent (in) :: z
          real(8) :: tmp
          if ((1.0d0 + z) <= (-200.0d0)) then
              tmp = z * x
          else if ((1.0d0 + z) <= 4000.0d0) then
              tmp = y + x
          else
              tmp = z * x
          end if
          code = tmp
      end function
      
      public static double code(double x, double y, double z) {
      	double tmp;
      	if ((1.0 + z) <= -200.0) {
      		tmp = z * x;
      	} else if ((1.0 + z) <= 4000.0) {
      		tmp = y + x;
      	} else {
      		tmp = z * x;
      	}
      	return tmp;
      }
      
      def code(x, y, z):
      	tmp = 0
      	if (1.0 + z) <= -200.0:
      		tmp = z * x
      	elif (1.0 + z) <= 4000.0:
      		tmp = y + x
      	else:
      		tmp = z * x
      	return tmp
      
      function code(x, y, z)
      	tmp = 0.0
      	if (Float64(1.0 + z) <= -200.0)
      		tmp = Float64(z * x);
      	elseif (Float64(1.0 + z) <= 4000.0)
      		tmp = Float64(y + x);
      	else
      		tmp = Float64(z * x);
      	end
      	return tmp
      end
      
      function tmp_2 = code(x, y, z)
      	tmp = 0.0;
      	if ((1.0 + z) <= -200.0)
      		tmp = z * x;
      	elseif ((1.0 + z) <= 4000.0)
      		tmp = y + x;
      	else
      		tmp = z * x;
      	end
      	tmp_2 = tmp;
      end
      
      code[x_, y_, z_] := If[LessEqual[N[(1.0 + z), $MachinePrecision], -200.0], N[(z * x), $MachinePrecision], If[LessEqual[N[(1.0 + z), $MachinePrecision], 4000.0], N[(y + x), $MachinePrecision], N[(z * x), $MachinePrecision]]]
      
      \begin{array}{l}
      
      \\
      \begin{array}{l}
      \mathbf{if}\;1 + z \leq -200:\\
      \;\;\;\;z \cdot x\\
      
      \mathbf{elif}\;1 + z \leq 4000:\\
      \;\;\;\;y + x\\
      
      \mathbf{else}:\\
      \;\;\;\;z \cdot x\\
      
      
      \end{array}
      \end{array}
      
      Derivation
      1. Split input into 2 regimes
      2. if (+.f64 z #s(literal 1 binary64)) < -200 or 4e3 < (+.f64 z #s(literal 1 binary64))

        1. Initial program 100.0%

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

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

            \[\leadsto x \cdot \color{blue}{\left(z + 1\right)} \]
          2. distribute-rgt-inN/A

            \[\leadsto \color{blue}{z \cdot x + 1 \cdot x} \]
          3. *-lft-identityN/A

            \[\leadsto z \cdot x + \color{blue}{x} \]
          4. lower-fma.f6460.4

            \[\leadsto \color{blue}{\mathsf{fma}\left(z, x, x\right)} \]
        5. Applied rewrites60.4%

          \[\leadsto \color{blue}{\mathsf{fma}\left(z, x, x\right)} \]
        6. Taylor expanded in z around inf

          \[\leadsto x \cdot \color{blue}{z} \]
        7. Step-by-step derivation
          1. Applied rewrites59.7%

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

          if -200 < (+.f64 z #s(literal 1 binary64)) < 4e3

          1. Initial program 100.0%

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

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

              \[\leadsto \color{blue}{y + x} \]
            2. lower-+.f6496.7

              \[\leadsto \color{blue}{y + x} \]
          5. Applied rewrites96.7%

            \[\leadsto \color{blue}{y + x} \]
        8. Recombined 2 regimes into one program.
        9. Final simplification81.1%

          \[\leadsto \begin{array}{l} \mathbf{if}\;1 + z \leq -200:\\ \;\;\;\;z \cdot x\\ \mathbf{elif}\;1 + z \leq 4000:\\ \;\;\;\;y + x\\ \mathbf{else}:\\ \;\;\;\;z \cdot x\\ \end{array} \]
        10. Add Preprocessing

        Alternative 4: 51.6% accurate, 0.7× speedup?

        \[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;y + x \leq -5 \cdot 10^{-265}:\\ \;\;\;\;\left(1 + z\right) \cdot x\\ \mathbf{else}:\\ \;\;\;\;\mathsf{fma}\left(z, y, y\right)\\ \end{array} \end{array} \]
        (FPCore (x y z)
         :precision binary64
         (if (<= (+ y x) -5e-265) (* (+ 1.0 z) x) (fma z y y)))
        double code(double x, double y, double z) {
        	double tmp;
        	if ((y + x) <= -5e-265) {
        		tmp = (1.0 + z) * x;
        	} else {
        		tmp = fma(z, y, y);
        	}
        	return tmp;
        }
        
        function code(x, y, z)
        	tmp = 0.0
        	if (Float64(y + x) <= -5e-265)
        		tmp = Float64(Float64(1.0 + z) * x);
        	else
        		tmp = fma(z, y, y);
        	end
        	return tmp
        end
        
        code[x_, y_, z_] := If[LessEqual[N[(y + x), $MachinePrecision], -5e-265], N[(N[(1.0 + z), $MachinePrecision] * x), $MachinePrecision], N[(z * y + y), $MachinePrecision]]
        
        \begin{array}{l}
        
        \\
        \begin{array}{l}
        \mathbf{if}\;y + x \leq -5 \cdot 10^{-265}:\\
        \;\;\;\;\left(1 + z\right) \cdot x\\
        
        \mathbf{else}:\\
        \;\;\;\;\mathsf{fma}\left(z, y, y\right)\\
        
        
        \end{array}
        \end{array}
        
        Derivation
        1. Split input into 2 regimes
        2. if (+.f64 x y) < -5.0000000000000001e-265

          1. Initial program 100.0%

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

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

              \[\leadsto x \cdot \color{blue}{\left(z + 1\right)} \]
            2. distribute-rgt-inN/A

              \[\leadsto \color{blue}{z \cdot x + 1 \cdot x} \]
            3. *-lft-identityN/A

              \[\leadsto z \cdot x + \color{blue}{x} \]
            4. lower-fma.f6455.6

              \[\leadsto \color{blue}{\mathsf{fma}\left(z, x, x\right)} \]
          5. Applied rewrites55.6%

            \[\leadsto \color{blue}{\mathsf{fma}\left(z, x, x\right)} \]
          6. Step-by-step derivation
            1. Applied rewrites55.6%

              \[\leadsto \left(1 + z\right) \cdot \color{blue}{x} \]

            if -5.0000000000000001e-265 < (+.f64 x y)

            1. Initial program 100.0%

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

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

                \[\leadsto y \cdot \color{blue}{\left(z + 1\right)} \]
              2. distribute-rgt-inN/A

                \[\leadsto \color{blue}{z \cdot y + 1 \cdot y} \]
              3. *-lft-identityN/A

                \[\leadsto z \cdot y + \color{blue}{y} \]
              4. lower-fma.f6453.3

                \[\leadsto \color{blue}{\mathsf{fma}\left(z, y, y\right)} \]
            5. Applied rewrites53.3%

              \[\leadsto \color{blue}{\mathsf{fma}\left(z, y, y\right)} \]
          7. Recombined 2 regimes into one program.
          8. Final simplification54.5%

            \[\leadsto \begin{array}{l} \mathbf{if}\;y + x \leq -5 \cdot 10^{-265}:\\ \;\;\;\;\left(1 + z\right) \cdot x\\ \mathbf{else}:\\ \;\;\;\;\mathsf{fma}\left(z, y, y\right)\\ \end{array} \]
          9. Add Preprocessing

          Alternative 5: 51.6% accurate, 0.7× speedup?

          \[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;y + x \leq -5 \cdot 10^{-265}:\\ \;\;\;\;\mathsf{fma}\left(z, x, x\right)\\ \mathbf{else}:\\ \;\;\;\;\mathsf{fma}\left(z, y, y\right)\\ \end{array} \end{array} \]
          (FPCore (x y z)
           :precision binary64
           (if (<= (+ y x) -5e-265) (fma z x x) (fma z y y)))
          double code(double x, double y, double z) {
          	double tmp;
          	if ((y + x) <= -5e-265) {
          		tmp = fma(z, x, x);
          	} else {
          		tmp = fma(z, y, y);
          	}
          	return tmp;
          }
          
          function code(x, y, z)
          	tmp = 0.0
          	if (Float64(y + x) <= -5e-265)
          		tmp = fma(z, x, x);
          	else
          		tmp = fma(z, y, y);
          	end
          	return tmp
          end
          
          code[x_, y_, z_] := If[LessEqual[N[(y + x), $MachinePrecision], -5e-265], N[(z * x + x), $MachinePrecision], N[(z * y + y), $MachinePrecision]]
          
          \begin{array}{l}
          
          \\
          \begin{array}{l}
          \mathbf{if}\;y + x \leq -5 \cdot 10^{-265}:\\
          \;\;\;\;\mathsf{fma}\left(z, x, x\right)\\
          
          \mathbf{else}:\\
          \;\;\;\;\mathsf{fma}\left(z, y, y\right)\\
          
          
          \end{array}
          \end{array}
          
          Derivation
          1. Split input into 2 regimes
          2. if (+.f64 x y) < -5.0000000000000001e-265

            1. Initial program 100.0%

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

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

                \[\leadsto x \cdot \color{blue}{\left(z + 1\right)} \]
              2. distribute-rgt-inN/A

                \[\leadsto \color{blue}{z \cdot x + 1 \cdot x} \]
              3. *-lft-identityN/A

                \[\leadsto z \cdot x + \color{blue}{x} \]
              4. lower-fma.f6455.6

                \[\leadsto \color{blue}{\mathsf{fma}\left(z, x, x\right)} \]
            5. Applied rewrites55.6%

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

            if -5.0000000000000001e-265 < (+.f64 x y)

            1. Initial program 100.0%

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

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

                \[\leadsto y \cdot \color{blue}{\left(z + 1\right)} \]
              2. distribute-rgt-inN/A

                \[\leadsto \color{blue}{z \cdot y + 1 \cdot y} \]
              3. *-lft-identityN/A

                \[\leadsto z \cdot y + \color{blue}{y} \]
              4. lower-fma.f6453.3

                \[\leadsto \color{blue}{\mathsf{fma}\left(z, y, y\right)} \]
            5. Applied rewrites53.3%

              \[\leadsto \color{blue}{\mathsf{fma}\left(z, y, y\right)} \]
          3. Recombined 2 regimes into one program.
          4. Final simplification54.5%

            \[\leadsto \begin{array}{l} \mathbf{if}\;y + x \leq -5 \cdot 10^{-265}:\\ \;\;\;\;\mathsf{fma}\left(z, x, x\right)\\ \mathbf{else}:\\ \;\;\;\;\mathsf{fma}\left(z, y, y\right)\\ \end{array} \]
          5. Add Preprocessing

          Alternative 6: 50.4% accurate, 3.0× speedup?

          \[\begin{array}{l} \\ y + x \end{array} \]
          (FPCore (x y z) :precision binary64 (+ y x))
          double code(double x, double y, double z) {
          	return y + x;
          }
          
          real(8) function code(x, y, z)
              real(8), intent (in) :: x
              real(8), intent (in) :: y
              real(8), intent (in) :: z
              code = y + x
          end function
          
          public static double code(double x, double y, double z) {
          	return y + x;
          }
          
          def code(x, y, z):
          	return y + x
          
          function code(x, y, z)
          	return Float64(y + x)
          end
          
          function tmp = code(x, y, z)
          	tmp = y + x;
          end
          
          code[x_, y_, z_] := N[(y + x), $MachinePrecision]
          
          \begin{array}{l}
          
          \\
          y + x
          \end{array}
          
          Derivation
          1. Initial program 100.0%

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

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

              \[\leadsto \color{blue}{y + x} \]
            2. lower-+.f6457.0

              \[\leadsto \color{blue}{y + x} \]
          5. Applied rewrites57.0%

            \[\leadsto \color{blue}{y + x} \]
          6. Add Preprocessing

          Reproduce

          ?
          herbie shell --seed 2024255 
          (FPCore (x y z)
            :name "Optimisation.CirclePacking:place from circle-packing-0.1.0.4, G"
            :precision binary64
            (* (+ x y) (+ z 1.0)))