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

Percentage Accurate: 77.4% → 87.9%
Time: 9.6s
Alternatives: 11
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 11 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?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;t \leq -6 \cdot 10^{+139}:\\ \;\;\;\;\mathsf{fma}\left(y, \frac{z - a}{t}, x\right)\\ \mathbf{elif}\;t \leq 3.8 \cdot 10^{+56}:\\ \;\;\;\;\left(y + x\right) - \frac{\left(t - z\right) \cdot y}{t - a}\\ \mathbf{else}:\\ \;\;\;\;\mathsf{fma}\left(\frac{y}{t}, z - a, x\right)\\ \end{array} \end{array} \]
(FPCore (x y z t a)
 :precision binary64
 (if (<= t -6e+139)
   (fma y (/ (- z a) t) x)
   (if (<= t 3.8e+56)
     (- (+ y x) (/ (* (- t z) y) (- 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 = (y + x) - (((t - z) * y) / (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(y + x) - Float64(Float64(Float64(t - z) * y) / 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[(y + x), $MachinePrecision] - N[(N[(N[(t - z), $MachinePrecision] * y), $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(y + x\right) - \frac{\left(t - z\right) \cdot y}{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%

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

    Alternative 2: 67.6% accurate, 0.2× speedup?

    \[\begin{array}{l} \\ \begin{array}{l} t_1 := \frac{y}{t} \cdot z\\ t_2 := \left(y + x\right) - \frac{\left(t - z\right) \cdot y}{t - a}\\ \mathbf{if}\;t\_2 \leq -\infty:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;t\_2 \leq -2 \cdot 10^{-221}:\\ \;\;\;\;y + x\\ \mathbf{elif}\;t\_2 \leq 10^{-277}:\\ \;\;\;\;x\\ \mathbf{elif}\;t\_2 \leq 5 \cdot 10^{+291}:\\ \;\;\;\;y + x\\ \mathbf{else}:\\ \;\;\;\;t\_1\\ \end{array} \end{array} \]
    (FPCore (x y z t a)
     :precision binary64
     (let* ((t_1 (* (/ y t) z)) (t_2 (- (+ y x) (/ (* (- t z) y) (- t a)))))
       (if (<= t_2 (- INFINITY))
         t_1
         (if (<= t_2 -2e-221)
           (+ y x)
           (if (<= t_2 1e-277) x (if (<= t_2 5e+291) (+ y x) t_1))))))
    double code(double x, double y, double z, double t, double a) {
    	double t_1 = (y / t) * z;
    	double t_2 = (y + x) - (((t - z) * y) / (t - a));
    	double tmp;
    	if (t_2 <= -((double) INFINITY)) {
    		tmp = t_1;
    	} else if (t_2 <= -2e-221) {
    		tmp = y + x;
    	} else if (t_2 <= 1e-277) {
    		tmp = x;
    	} else if (t_2 <= 5e+291) {
    		tmp = y + x;
    	} else {
    		tmp = t_1;
    	}
    	return tmp;
    }
    
    public static double code(double x, double y, double z, double t, double a) {
    	double t_1 = (y / t) * z;
    	double t_2 = (y + x) - (((t - z) * y) / (t - a));
    	double tmp;
    	if (t_2 <= -Double.POSITIVE_INFINITY) {
    		tmp = t_1;
    	} else if (t_2 <= -2e-221) {
    		tmp = y + x;
    	} else if (t_2 <= 1e-277) {
    		tmp = x;
    	} else if (t_2 <= 5e+291) {
    		tmp = y + x;
    	} else {
    		tmp = t_1;
    	}
    	return tmp;
    }
    
    def code(x, y, z, t, a):
    	t_1 = (y / t) * z
    	t_2 = (y + x) - (((t - z) * y) / (t - a))
    	tmp = 0
    	if t_2 <= -math.inf:
    		tmp = t_1
    	elif t_2 <= -2e-221:
    		tmp = y + x
    	elif t_2 <= 1e-277:
    		tmp = x
    	elif t_2 <= 5e+291:
    		tmp = y + x
    	else:
    		tmp = t_1
    	return tmp
    
    function code(x, y, z, t, a)
    	t_1 = Float64(Float64(y / t) * z)
    	t_2 = Float64(Float64(y + x) - Float64(Float64(Float64(t - z) * y) / Float64(t - a)))
    	tmp = 0.0
    	if (t_2 <= Float64(-Inf))
    		tmp = t_1;
    	elseif (t_2 <= -2e-221)
    		tmp = Float64(y + x);
    	elseif (t_2 <= 1e-277)
    		tmp = x;
    	elseif (t_2 <= 5e+291)
    		tmp = Float64(y + x);
    	else
    		tmp = t_1;
    	end
    	return tmp
    end
    
    function tmp_2 = code(x, y, z, t, a)
    	t_1 = (y / t) * z;
    	t_2 = (y + x) - (((t - z) * y) / (t - a));
    	tmp = 0.0;
    	if (t_2 <= -Inf)
    		tmp = t_1;
    	elseif (t_2 <= -2e-221)
    		tmp = y + x;
    	elseif (t_2 <= 1e-277)
    		tmp = x;
    	elseif (t_2 <= 5e+291)
    		tmp = y + x;
    	else
    		tmp = t_1;
    	end
    	tmp_2 = tmp;
    end
    
    code[x_, y_, z_, t_, a_] := Block[{t$95$1 = N[(N[(y / t), $MachinePrecision] * z), $MachinePrecision]}, Block[{t$95$2 = N[(N[(y + x), $MachinePrecision] - N[(N[(N[(t - z), $MachinePrecision] * y), $MachinePrecision] / N[(t - a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[t$95$2, (-Infinity)], t$95$1, If[LessEqual[t$95$2, -2e-221], N[(y + x), $MachinePrecision], If[LessEqual[t$95$2, 1e-277], x, If[LessEqual[t$95$2, 5e+291], N[(y + x), $MachinePrecision], t$95$1]]]]]]
    
    \begin{array}{l}
    
    \\
    \begin{array}{l}
    t_1 := \frac{y}{t} \cdot z\\
    t_2 := \left(y + x\right) - \frac{\left(t - z\right) \cdot y}{t - a}\\
    \mathbf{if}\;t\_2 \leq -\infty:\\
    \;\;\;\;t\_1\\
    
    \mathbf{elif}\;t\_2 \leq -2 \cdot 10^{-221}:\\
    \;\;\;\;y + x\\
    
    \mathbf{elif}\;t\_2 \leq 10^{-277}:\\
    \;\;\;\;x\\
    
    \mathbf{elif}\;t\_2 \leq 5 \cdot 10^{+291}:\\
    \;\;\;\;y + x\\
    
    \mathbf{else}:\\
    \;\;\;\;t\_1\\
    
    
    \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 or 5.0000000000000001e291 < (-.f64 (+.f64 x y) (/.f64 (*.f64 (-.f64 z t) y) (-.f64 a t)))

      1. Initial program 42.6%

        \[\left(x + y\right) - \frac{\left(z - t\right) \cdot y}{a - t} \]
      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--.f6470.5

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

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

        \[\leadsto \frac{y \cdot z}{\color{blue}{t}} \]
      7. Step-by-step derivation
        1. Applied rewrites41.8%

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

        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))) < 5.0000000000000001e291

        1. Initial program 98.0%

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

          \[\leadsto \color{blue}{x + y} \]
        4. Step-by-step derivation
          1. lower-+.f6479.7

            \[\leadsto \color{blue}{x + y} \]
        5. Applied rewrites79.7%

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

        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 z around 0

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

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

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

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

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

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

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

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

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

            \[\leadsto \mathsf{fma}\left(y, \frac{t}{\color{blue}{a - t}}, x + y\right) \]
          10. lower-+.f6410.6

            \[\leadsto \mathsf{fma}\left(y, \frac{t}{a - t}, \color{blue}{x + y}\right) \]
        5. Applied rewrites10.6%

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

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

            \[\leadsto 0 + \color{blue}{x} \]
          2. Taylor expanded in t around inf

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

              \[\leadsto x \]
          4. Recombined 3 regimes into one program.
          5. Final simplification67.6%

            \[\leadsto \begin{array}{l} \mathbf{if}\;\left(y + x\right) - \frac{\left(t - z\right) \cdot y}{t - a} \leq -\infty:\\ \;\;\;\;\frac{y}{t} \cdot z\\ \mathbf{elif}\;\left(y + x\right) - \frac{\left(t - z\right) \cdot y}{t - a} \leq -2 \cdot 10^{-221}:\\ \;\;\;\;y + x\\ \mathbf{elif}\;\left(y + x\right) - \frac{\left(t - z\right) \cdot y}{t - a} \leq 10^{-277}:\\ \;\;\;\;x\\ \mathbf{elif}\;\left(y + x\right) - \frac{\left(t - z\right) \cdot y}{t - a} \leq 5 \cdot 10^{+291}:\\ \;\;\;\;y + x\\ \mathbf{else}:\\ \;\;\;\;\frac{y}{t} \cdot z\\ \end{array} \]
          6. 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))))