Graphics.Rendering.Plot.Render.Plot.Axis:renderAxisTick from plot-0.2.3.4, B

Percentage Accurate: 77.4% → 87.9%
Time: 11.7s
Alternatives: 10
Speedup: 1.0×

Specification

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

\\
\left(x + y\right) - \frac{\left(z - t\right) \cdot y}{a - t}
\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 10 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: 77.4% accurate, 1.0× speedup?

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

\\
\left(x + y\right) - \frac{\left(z - t\right) \cdot y}{a - t}
\end{array}

Alternative 1: 87.9% accurate, 0.7× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;t \leq -6 \cdot 10^{+139}:\\ \;\;\;\;\mathsf{fma}\left(y, \frac{z - a}{t}, x\right)\\ \mathbf{elif}\;t \leq 3.8 \cdot 10^{+56}:\\ \;\;\;\;\left(x + y\right) + \frac{y \cdot \left(z - t\right)}{t - a}\\ \mathbf{else}:\\ \;\;\;\;\mathsf{fma}\left(\frac{y}{t}, z - a, x\right)\\ \end{array} \end{array} \]
(FPCore (x y z t a)
 :precision binary64
 (if (<= t -6e+139)
   (fma y (/ (- z a) t) x)
   (if (<= t 3.8e+56)
     (+ (+ x y) (/ (* y (- z t)) (- t a)))
     (fma (/ y t) (- z a) x))))
double code(double x, double y, double z, double t, double a) {
	double tmp;
	if (t <= -6e+139) {
		tmp = fma(y, ((z - a) / t), x);
	} else if (t <= 3.8e+56) {
		tmp = (x + y) + ((y * (z - t)) / (t - a));
	} else {
		tmp = fma((y / t), (z - a), x);
	}
	return tmp;
}
function code(x, y, z, t, a)
	tmp = 0.0
	if (t <= -6e+139)
		tmp = fma(y, Float64(Float64(z - a) / t), x);
	elseif (t <= 3.8e+56)
		tmp = Float64(Float64(x + y) + Float64(Float64(y * Float64(z - t)) / Float64(t - a)));
	else
		tmp = fma(Float64(y / t), Float64(z - a), x);
	end
	return tmp
end
code[x_, y_, z_, t_, a_] := If[LessEqual[t, -6e+139], N[(y * N[(N[(z - a), $MachinePrecision] / t), $MachinePrecision] + x), $MachinePrecision], If[LessEqual[t, 3.8e+56], N[(N[(x + y), $MachinePrecision] + N[(N[(y * N[(z - t), $MachinePrecision]), $MachinePrecision] / N[(t - a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(N[(y / t), $MachinePrecision] * N[(z - a), $MachinePrecision] + x), $MachinePrecision]]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;t \leq -6 \cdot 10^{+139}:\\
\;\;\;\;\mathsf{fma}\left(y, \frac{z - a}{t}, x\right)\\

\mathbf{elif}\;t \leq 3.8 \cdot 10^{+56}:\\
\;\;\;\;\left(x + y\right) + \frac{y \cdot \left(z - t\right)}{t - a}\\

\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(\frac{y}{t}, z - a, x\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if t < -5.9999999999999999e139

    1. Initial program 48.6%

      \[\left(x + y\right) - \frac{\left(z - t\right) \cdot y}{a - t} \]
    2. Add Preprocessing
    3. Taylor expanded in t around inf

      \[\leadsto \color{blue}{\left(x + -1 \cdot \frac{a \cdot y}{t}\right) - -1 \cdot \frac{y \cdot z}{t}} \]
    4. Step-by-step derivation
      1. cancel-sign-sub-invN/A

        \[\leadsto \color{blue}{\left(x + -1 \cdot \frac{a \cdot y}{t}\right) + \left(\mathsf{neg}\left(-1\right)\right) \cdot \frac{y \cdot z}{t}} \]
      2. metadata-evalN/A

        \[\leadsto \left(x + -1 \cdot \frac{a \cdot y}{t}\right) + \color{blue}{1} \cdot \frac{y \cdot z}{t} \]
      3. *-lft-identityN/A

        \[\leadsto \left(x + -1 \cdot \frac{a \cdot y}{t}\right) + \color{blue}{\frac{y \cdot z}{t}} \]
      4. +-commutativeN/A

        \[\leadsto \color{blue}{\frac{y \cdot z}{t} + \left(x + -1 \cdot \frac{a \cdot y}{t}\right)} \]
      5. +-commutativeN/A

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

        \[\leadsto \color{blue}{\left(\frac{y \cdot z}{t} + -1 \cdot \frac{a \cdot y}{t}\right) + x} \]
      7. mul-1-negN/A

        \[\leadsto \left(\frac{y \cdot z}{t} + \color{blue}{\left(\mathsf{neg}\left(\frac{a \cdot y}{t}\right)\right)}\right) + x \]
      8. sub-negN/A

        \[\leadsto \color{blue}{\left(\frac{y \cdot z}{t} - \frac{a \cdot y}{t}\right)} + x \]
      9. associate-/l*N/A

        \[\leadsto \left(\frac{y \cdot z}{t} - \color{blue}{a \cdot \frac{y}{t}}\right) + x \]
      10. *-commutativeN/A

        \[\leadsto \left(\frac{\color{blue}{z \cdot y}}{t} - a \cdot \frac{y}{t}\right) + x \]
      11. associate-/l*N/A

        \[\leadsto \left(\color{blue}{z \cdot \frac{y}{t}} - a \cdot \frac{y}{t}\right) + x \]
      12. distribute-rgt-out--N/A

        \[\leadsto \color{blue}{\frac{y}{t} \cdot \left(z - a\right)} + x \]
      13. lower-fma.f64N/A

        \[\leadsto \color{blue}{\mathsf{fma}\left(\frac{y}{t}, z - a, x\right)} \]
      14. lower-/.f64N/A

        \[\leadsto \mathsf{fma}\left(\color{blue}{\frac{y}{t}}, z - a, x\right) \]
      15. lower--.f6489.8

        \[\leadsto \mathsf{fma}\left(\frac{y}{t}, \color{blue}{z - a}, x\right) \]
    5. Applied rewrites89.8%

      \[\leadsto \color{blue}{\mathsf{fma}\left(\frac{y}{t}, z - a, x\right)} \]
    6. Step-by-step derivation
      1. Applied rewrites92.2%

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

      if -5.9999999999999999e139 < t < 3.79999999999999996e56

      1. Initial program 91.9%

        \[\left(x + y\right) - \frac{\left(z - t\right) \cdot y}{a - t} \]
      2. Add Preprocessing

      if 3.79999999999999996e56 < t

      1. Initial program 58.5%

        \[\left(x + y\right) - \frac{\left(z - t\right) \cdot y}{a - t} \]
      2. Add Preprocessing
      3. Taylor expanded in t around inf

        \[\leadsto \color{blue}{\left(x + -1 \cdot \frac{a \cdot y}{t}\right) - -1 \cdot \frac{y \cdot z}{t}} \]
      4. Step-by-step derivation
        1. cancel-sign-sub-invN/A

          \[\leadsto \color{blue}{\left(x + -1 \cdot \frac{a \cdot y}{t}\right) + \left(\mathsf{neg}\left(-1\right)\right) \cdot \frac{y \cdot z}{t}} \]
        2. metadata-evalN/A

          \[\leadsto \left(x + -1 \cdot \frac{a \cdot y}{t}\right) + \color{blue}{1} \cdot \frac{y \cdot z}{t} \]
        3. *-lft-identityN/A

          \[\leadsto \left(x + -1 \cdot \frac{a \cdot y}{t}\right) + \color{blue}{\frac{y \cdot z}{t}} \]
        4. +-commutativeN/A

          \[\leadsto \color{blue}{\frac{y \cdot z}{t} + \left(x + -1 \cdot \frac{a \cdot y}{t}\right)} \]
        5. +-commutativeN/A

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

          \[\leadsto \color{blue}{\left(\frac{y \cdot z}{t} + -1 \cdot \frac{a \cdot y}{t}\right) + x} \]
        7. mul-1-negN/A

          \[\leadsto \left(\frac{y \cdot z}{t} + \color{blue}{\left(\mathsf{neg}\left(\frac{a \cdot y}{t}\right)\right)}\right) + x \]
        8. sub-negN/A

          \[\leadsto \color{blue}{\left(\frac{y \cdot z}{t} - \frac{a \cdot y}{t}\right)} + x \]
        9. associate-/l*N/A

          \[\leadsto \left(\frac{y \cdot z}{t} - \color{blue}{a \cdot \frac{y}{t}}\right) + x \]
        10. *-commutativeN/A

          \[\leadsto \left(\frac{\color{blue}{z \cdot y}}{t} - a \cdot \frac{y}{t}\right) + x \]
        11. associate-/l*N/A

          \[\leadsto \left(\color{blue}{z \cdot \frac{y}{t}} - a \cdot \frac{y}{t}\right) + x \]
        12. distribute-rgt-out--N/A

          \[\leadsto \color{blue}{\frac{y}{t} \cdot \left(z - a\right)} + x \]
        13. lower-fma.f64N/A

          \[\leadsto \color{blue}{\mathsf{fma}\left(\frac{y}{t}, z - a, x\right)} \]
        14. lower-/.f64N/A

          \[\leadsto \mathsf{fma}\left(\color{blue}{\frac{y}{t}}, z - a, x\right) \]
        15. lower--.f6484.8

          \[\leadsto \mathsf{fma}\left(\frac{y}{t}, \color{blue}{z - a}, x\right) \]
      5. Applied rewrites84.8%

        \[\leadsto \color{blue}{\mathsf{fma}\left(\frac{y}{t}, z - a, x\right)} \]
    7. Recombined 3 regimes into one program.
    8. Final simplification90.7%

      \[\leadsto \begin{array}{l} \mathbf{if}\;t \leq -6 \cdot 10^{+139}:\\ \;\;\;\;\mathsf{fma}\left(y, \frac{z - a}{t}, x\right)\\ \mathbf{elif}\;t \leq 3.8 \cdot 10^{+56}:\\ \;\;\;\;\left(x + y\right) + \frac{y \cdot \left(z - t\right)}{t - a}\\ \mathbf{else}:\\ \;\;\;\;\mathsf{fma}\left(\frac{y}{t}, z - a, x\right)\\ \end{array} \]
    9. Add Preprocessing

    Alternative 2: 64.8% accurate, 0.3× speedup?

    \[\begin{array}{l} \\ \begin{array}{l} t_1 := \left(x + y\right) + \frac{y \cdot \left(z - t\right)}{t - a}\\ \mathbf{if}\;t\_1 \leq -\infty:\\ \;\;\;\;\frac{y \cdot z}{t}\\ \mathbf{elif}\;t\_1 \leq -2 \cdot 10^{-221}:\\ \;\;\;\;x + y\\ \mathbf{elif}\;t\_1 \leq 10^{-277}:\\ \;\;\;\;x\\ \mathbf{else}:\\ \;\;\;\;x + y\\ \end{array} \end{array} \]
    (FPCore (x y z t a)
     :precision binary64
     (let* ((t_1 (+ (+ x y) (/ (* y (- z t)) (- t a)))))
       (if (<= t_1 (- INFINITY))
         (/ (* y z) t)
         (if (<= t_1 -2e-221) (+ x y) (if (<= t_1 1e-277) x (+ x y))))))
    double code(double x, double y, double z, double t, double a) {
    	double t_1 = (x + y) + ((y * (z - t)) / (t - a));
    	double tmp;
    	if (t_1 <= -((double) INFINITY)) {
    		tmp = (y * z) / t;
    	} else if (t_1 <= -2e-221) {
    		tmp = x + y;
    	} else if (t_1 <= 1e-277) {
    		tmp = x;
    	} else {
    		tmp = x + y;
    	}
    	return tmp;
    }
    
    public static double code(double x, double y, double z, double t, double a) {
    	double t_1 = (x + y) + ((y * (z - t)) / (t - a));
    	double tmp;
    	if (t_1 <= -Double.POSITIVE_INFINITY) {
    		tmp = (y * z) / t;
    	} else if (t_1 <= -2e-221) {
    		tmp = x + y;
    	} else if (t_1 <= 1e-277) {
    		tmp = x;
    	} else {
    		tmp = x + y;
    	}
    	return tmp;
    }
    
    def code(x, y, z, t, a):
    	t_1 = (x + y) + ((y * (z - t)) / (t - a))
    	tmp = 0
    	if t_1 <= -math.inf:
    		tmp = (y * z) / t
    	elif t_1 <= -2e-221:
    		tmp = x + y
    	elif t_1 <= 1e-277:
    		tmp = x
    	else:
    		tmp = x + y
    	return tmp
    
    function code(x, y, z, t, a)
    	t_1 = Float64(Float64(x + y) + Float64(Float64(y * Float64(z - t)) / Float64(t - a)))
    	tmp = 0.0
    	if (t_1 <= Float64(-Inf))
    		tmp = Float64(Float64(y * z) / t);
    	elseif (t_1 <= -2e-221)
    		tmp = Float64(x + y);
    	elseif (t_1 <= 1e-277)
    		tmp = x;
    	else
    		tmp = Float64(x + y);
    	end
    	return tmp
    end
    
    function tmp_2 = code(x, y, z, t, a)
    	t_1 = (x + y) + ((y * (z - t)) / (t - a));
    	tmp = 0.0;
    	if (t_1 <= -Inf)
    		tmp = (y * z) / t;
    	elseif (t_1 <= -2e-221)
    		tmp = x + y;
    	elseif (t_1 <= 1e-277)
    		tmp = x;
    	else
    		tmp = x + y;
    	end
    	tmp_2 = tmp;
    end
    
    code[x_, y_, z_, t_, a_] := Block[{t$95$1 = N[(N[(x + y), $MachinePrecision] + N[(N[(y * N[(z - t), $MachinePrecision]), $MachinePrecision] / N[(t - a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[t$95$1, (-Infinity)], N[(N[(y * z), $MachinePrecision] / t), $MachinePrecision], If[LessEqual[t$95$1, -2e-221], N[(x + y), $MachinePrecision], If[LessEqual[t$95$1, 1e-277], x, N[(x + y), $MachinePrecision]]]]]
    
    \begin{array}{l}
    
    \\
    \begin{array}{l}
    t_1 := \left(x + y\right) + \frac{y \cdot \left(z - t\right)}{t - a}\\
    \mathbf{if}\;t\_1 \leq -\infty:\\
    \;\;\;\;\frac{y \cdot z}{t}\\
    
    \mathbf{elif}\;t\_1 \leq -2 \cdot 10^{-221}:\\
    \;\;\;\;x + y\\
    
    \mathbf{elif}\;t\_1 \leq 10^{-277}:\\
    \;\;\;\;x\\
    
    \mathbf{else}:\\
    \;\;\;\;x + y\\
    
    
    \end{array}
    \end{array}
    
    Derivation
    1. Split input into 3 regimes
    2. if (-.f64 (+.f64 x y) (/.f64 (*.f64 (-.f64 z t) y) (-.f64 a t))) < -inf.0

      1. Initial program 38.7%

        \[\left(x + y\right) - \frac{\left(z - t\right) \cdot y}{a - t} \]
      2. Add Preprocessing
      3. Taylor expanded in t around inf

        \[\leadsto \color{blue}{\left(x + -1 \cdot \frac{a \cdot y}{t}\right) - -1 \cdot \frac{y \cdot z}{t}} \]
      4. Step-by-step derivation
        1. cancel-sign-sub-invN/A

          \[\leadsto \color{blue}{\left(x + -1 \cdot \frac{a \cdot y}{t}\right) + \left(\mathsf{neg}\left(-1\right)\right) \cdot \frac{y \cdot z}{t}} \]
        2. metadata-evalN/A

          \[\leadsto \left(x + -1 \cdot \frac{a \cdot y}{t}\right) + \color{blue}{1} \cdot \frac{y \cdot z}{t} \]
        3. *-lft-identityN/A

          \[\leadsto \left(x + -1 \cdot \frac{a \cdot y}{t}\right) + \color{blue}{\frac{y \cdot z}{t}} \]
        4. +-commutativeN/A

          \[\leadsto \color{blue}{\frac{y \cdot z}{t} + \left(x + -1 \cdot \frac{a \cdot y}{t}\right)} \]
        5. +-commutativeN/A

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

          \[\leadsto \color{blue}{\left(\frac{y \cdot z}{t} + -1 \cdot \frac{a \cdot y}{t}\right) + x} \]
        7. mul-1-negN/A

          \[\leadsto \left(\frac{y \cdot z}{t} + \color{blue}{\left(\mathsf{neg}\left(\frac{a \cdot y}{t}\right)\right)}\right) + x \]
        8. sub-negN/A

          \[\leadsto \color{blue}{\left(\frac{y \cdot z}{t} - \frac{a \cdot y}{t}\right)} + x \]
        9. associate-/l*N/A

          \[\leadsto \left(\frac{y \cdot z}{t} - \color{blue}{a \cdot \frac{y}{t}}\right) + x \]
        10. *-commutativeN/A

          \[\leadsto \left(\frac{\color{blue}{z \cdot y}}{t} - a \cdot \frac{y}{t}\right) + x \]
        11. associate-/l*N/A

          \[\leadsto \left(\color{blue}{z \cdot \frac{y}{t}} - a \cdot \frac{y}{t}\right) + x \]
        12. distribute-rgt-out--N/A

          \[\leadsto \color{blue}{\frac{y}{t} \cdot \left(z - a\right)} + x \]
        13. lower-fma.f64N/A

          \[\leadsto \color{blue}{\mathsf{fma}\left(\frac{y}{t}, z - a, x\right)} \]
        14. lower-/.f64N/A

          \[\leadsto \mathsf{fma}\left(\color{blue}{\frac{y}{t}}, z - a, x\right) \]
        15. lower--.f6470.1

          \[\leadsto \mathsf{fma}\left(\frac{y}{t}, \color{blue}{z - a}, x\right) \]
      5. Applied rewrites70.1%

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

        \[\leadsto \frac{y \cdot z}{\color{blue}{t}} \]
      7. Step-by-step derivation
        1. Applied rewrites33.9%

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

        if -inf.0 < (-.f64 (+.f64 x y) (/.f64 (*.f64 (-.f64 z t) y) (-.f64 a t))) < -2.00000000000000003e-221 or 9.99999999999999969e-278 < (-.f64 (+.f64 x y) (/.f64 (*.f64 (-.f64 z t) y) (-.f64 a t)))

        1. Initial program 89.4%

          \[\left(x + y\right) - \frac{\left(z - t\right) \cdot y}{a - t} \]
        2. Add Preprocessing
        3. Taylor expanded in a around inf

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

            \[\leadsto \color{blue}{y + x} \]
          2. lower-+.f6471.2

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

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

        if -2.00000000000000003e-221 < (-.f64 (+.f64 x y) (/.f64 (*.f64 (-.f64 z t) y) (-.f64 a t))) < 9.99999999999999969e-278

        1. Initial program 11.5%

          \[\left(x + y\right) - \frac{\left(z - t\right) \cdot y}{a - t} \]
        2. Add Preprocessing
        3. Taylor expanded in a around 0

          \[\leadsto \color{blue}{\left(x + y\right) - -1 \cdot \frac{y \cdot \left(z - t\right)}{t}} \]
        4. Step-by-step derivation
          1. cancel-sign-sub-invN/A

            \[\leadsto \color{blue}{\left(x + y\right) + \left(\mathsf{neg}\left(-1\right)\right) \cdot \frac{y \cdot \left(z - t\right)}{t}} \]
          2. metadata-evalN/A

            \[\leadsto \left(x + y\right) + \color{blue}{1} \cdot \frac{y \cdot \left(z - t\right)}{t} \]
          3. *-lft-identityN/A

            \[\leadsto \left(x + y\right) + \color{blue}{\frac{y \cdot \left(z - t\right)}{t}} \]
          4. +-commutativeN/A

            \[\leadsto \color{blue}{\frac{y \cdot \left(z - t\right)}{t} + \left(x + y\right)} \]
          5. associate-/l*N/A

            \[\leadsto \color{blue}{y \cdot \frac{z - t}{t}} + \left(x + y\right) \]
          6. lower-fma.f64N/A

            \[\leadsto \color{blue}{\mathsf{fma}\left(y, \frac{z - t}{t}, x + y\right)} \]
          7. lower-/.f64N/A

            \[\leadsto \mathsf{fma}\left(y, \color{blue}{\frac{z - t}{t}}, x + y\right) \]
          8. lower--.f64N/A

            \[\leadsto \mathsf{fma}\left(y, \frac{\color{blue}{z - t}}{t}, x + y\right) \]
          9. +-commutativeN/A

            \[\leadsto \mathsf{fma}\left(y, \frac{z - t}{t}, \color{blue}{y + x}\right) \]
          10. lower-+.f648.1

            \[\leadsto \mathsf{fma}\left(y, \frac{z - t}{t}, \color{blue}{y + x}\right) \]
        5. Applied rewrites8.1%

          \[\leadsto \color{blue}{\mathsf{fma}\left(y, \frac{z - t}{t}, y + x\right)} \]
        6. Taylor expanded in z around 0

          \[\leadsto x + \color{blue}{\left(y + -1 \cdot y\right)} \]
        7. Step-by-step derivation
          1. Applied rewrites44.1%

            \[\leadsto x \]
        8. Recombined 3 regimes into one program.
        9. Final simplification64.8%

          \[\leadsto \begin{array}{l} \mathbf{if}\;\left(x + y\right) + \frac{y \cdot \left(z - t\right)}{t - a} \leq -\infty:\\ \;\;\;\;\frac{y \cdot z}{t}\\ \mathbf{elif}\;\left(x + y\right) + \frac{y \cdot \left(z - t\right)}{t - a} \leq -2 \cdot 10^{-221}:\\ \;\;\;\;x + y\\ \mathbf{elif}\;\left(x + y\right) + \frac{y \cdot \left(z - t\right)}{t - a} \leq 10^{-277}:\\ \;\;\;\;x\\ \mathbf{else}:\\ \;\;\;\;x + y\\ \end{array} \]
        10. Add Preprocessing

        Developer Target 1: 88.9% accurate, 0.3× speedup?

        \[\begin{array}{l} \\ \begin{array}{l} t_1 := \left(y + x\right) - \left(\left(z - t\right) \cdot \frac{1}{a - t}\right) \cdot y\\ t_2 := \left(x + y\right) - \frac{\left(z - t\right) \cdot y}{a - t}\\ \mathbf{if}\;t\_2 < -1.3664970889390727 \cdot 10^{-7}:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;t\_2 < 1.4754293444577233 \cdot 10^{-239}:\\ \;\;\;\;\frac{y \cdot \left(a - z\right) - x \cdot t}{a - t}\\ \mathbf{else}:\\ \;\;\;\;t\_1\\ \end{array} \end{array} \]
        (FPCore (x y z t a)
         :precision binary64
         (let* ((t_1 (- (+ y x) (* (* (- z t) (/ 1.0 (- a t))) y)))
                (t_2 (- (+ x y) (/ (* (- z t) y) (- a t)))))
           (if (< t_2 -1.3664970889390727e-7)
             t_1
             (if (< t_2 1.4754293444577233e-239)
               (/ (- (* y (- a z)) (* x t)) (- a t))
               t_1))))
        double code(double x, double y, double z, double t, double a) {
        	double t_1 = (y + x) - (((z - t) * (1.0 / (a - t))) * y);
        	double t_2 = (x + y) - (((z - t) * y) / (a - t));
        	double tmp;
        	if (t_2 < -1.3664970889390727e-7) {
        		tmp = t_1;
        	} else if (t_2 < 1.4754293444577233e-239) {
        		tmp = ((y * (a - z)) - (x * t)) / (a - t);
        	} else {
        		tmp = t_1;
        	}
        	return tmp;
        }
        
        real(8) function code(x, y, z, t, a)
            real(8), intent (in) :: x
            real(8), intent (in) :: y
            real(8), intent (in) :: z
            real(8), intent (in) :: t
            real(8), intent (in) :: a
            real(8) :: t_1
            real(8) :: t_2
            real(8) :: tmp
            t_1 = (y + x) - (((z - t) * (1.0d0 / (a - t))) * y)
            t_2 = (x + y) - (((z - t) * y) / (a - t))
            if (t_2 < (-1.3664970889390727d-7)) then
                tmp = t_1
            else if (t_2 < 1.4754293444577233d-239) then
                tmp = ((y * (a - z)) - (x * t)) / (a - t)
            else
                tmp = t_1
            end if
            code = tmp
        end function
        
        public static double code(double x, double y, double z, double t, double a) {
        	double t_1 = (y + x) - (((z - t) * (1.0 / (a - t))) * y);
        	double t_2 = (x + y) - (((z - t) * y) / (a - t));
        	double tmp;
        	if (t_2 < -1.3664970889390727e-7) {
        		tmp = t_1;
        	} else if (t_2 < 1.4754293444577233e-239) {
        		tmp = ((y * (a - z)) - (x * t)) / (a - t);
        	} else {
        		tmp = t_1;
        	}
        	return tmp;
        }
        
        def code(x, y, z, t, a):
        	t_1 = (y + x) - (((z - t) * (1.0 / (a - t))) * y)
        	t_2 = (x + y) - (((z - t) * y) / (a - t))
        	tmp = 0
        	if t_2 < -1.3664970889390727e-7:
        		tmp = t_1
        	elif t_2 < 1.4754293444577233e-239:
        		tmp = ((y * (a - z)) - (x * t)) / (a - t)
        	else:
        		tmp = t_1
        	return tmp
        
        function code(x, y, z, t, a)
        	t_1 = Float64(Float64(y + x) - Float64(Float64(Float64(z - t) * Float64(1.0 / Float64(a - t))) * y))
        	t_2 = Float64(Float64(x + y) - Float64(Float64(Float64(z - t) * y) / Float64(a - t)))
        	tmp = 0.0
        	if (t_2 < -1.3664970889390727e-7)
        		tmp = t_1;
        	elseif (t_2 < 1.4754293444577233e-239)
        		tmp = Float64(Float64(Float64(y * Float64(a - z)) - Float64(x * t)) / Float64(a - t));
        	else
        		tmp = t_1;
        	end
        	return tmp
        end
        
        function tmp_2 = code(x, y, z, t, a)
        	t_1 = (y + x) - (((z - t) * (1.0 / (a - t))) * y);
        	t_2 = (x + y) - (((z - t) * y) / (a - t));
        	tmp = 0.0;
        	if (t_2 < -1.3664970889390727e-7)
        		tmp = t_1;
        	elseif (t_2 < 1.4754293444577233e-239)
        		tmp = ((y * (a - z)) - (x * t)) / (a - t);
        	else
        		tmp = t_1;
        	end
        	tmp_2 = tmp;
        end
        
        code[x_, y_, z_, t_, a_] := Block[{t$95$1 = N[(N[(y + x), $MachinePrecision] - N[(N[(N[(z - t), $MachinePrecision] * N[(1.0 / N[(a - t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * y), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$2 = N[(N[(x + y), $MachinePrecision] - N[(N[(N[(z - t), $MachinePrecision] * y), $MachinePrecision] / N[(a - t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[Less[t$95$2, -1.3664970889390727e-7], t$95$1, If[Less[t$95$2, 1.4754293444577233e-239], N[(N[(N[(y * N[(a - z), $MachinePrecision]), $MachinePrecision] - N[(x * t), $MachinePrecision]), $MachinePrecision] / N[(a - t), $MachinePrecision]), $MachinePrecision], t$95$1]]]]
        
        \begin{array}{l}
        
        \\
        \begin{array}{l}
        t_1 := \left(y + x\right) - \left(\left(z - t\right) \cdot \frac{1}{a - t}\right) \cdot y\\
        t_2 := \left(x + y\right) - \frac{\left(z - t\right) \cdot y}{a - t}\\
        \mathbf{if}\;t\_2 < -1.3664970889390727 \cdot 10^{-7}:\\
        \;\;\;\;t\_1\\
        
        \mathbf{elif}\;t\_2 < 1.4754293444577233 \cdot 10^{-239}:\\
        \;\;\;\;\frac{y \cdot \left(a - z\right) - x \cdot t}{a - t}\\
        
        \mathbf{else}:\\
        \;\;\;\;t\_1\\
        
        
        \end{array}
        \end{array}
        

        Reproduce

        ?
        herbie shell --seed 2024230 
        (FPCore (x y z t a)
          :name "Graphics.Rendering.Plot.Render.Plot.Axis:renderAxisTick from plot-0.2.3.4, B"
          :precision binary64
        
          :alt
          (! :herbie-platform default (if (< (- (+ x y) (/ (* (- z t) y) (- a t))) -13664970889390727/100000000000000000000000) (- (+ y x) (* (* (- z t) (/ 1 (- a t))) y)) (if (< (- (+ x y) (/ (* (- z t) y) (- a t))) 14754293444577233/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000) (/ (- (* y (- a z)) (* x t)) (- a t)) (- (+ y x) (* (* (- z t) (/ 1 (- a t))) y)))))
        
          (- (+ x y) (/ (* (- z t) y) (- a t))))