
(FPCore (x y z t) :precision binary64 (+ x (* (- y x) (/ z t))))
double code(double x, double y, double z, double t) {
return x + ((y - x) * (z / t));
}
real(8) function code(x, y, z, t)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8), intent (in) :: t
code = x + ((y - x) * (z / t))
end function
public static double code(double x, double y, double z, double t) {
return x + ((y - x) * (z / t));
}
def code(x, y, z, t): return x + ((y - x) * (z / t))
function code(x, y, z, t) return Float64(x + Float64(Float64(y - x) * Float64(z / t))) end
function tmp = code(x, y, z, t) tmp = x + ((y - x) * (z / t)); end
code[x_, y_, z_, t_] := N[(x + N[(N[(y - x), $MachinePrecision] * N[(z / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x + \left(y - x\right) \cdot \frac{z}{t}
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 6 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y z t) :precision binary64 (+ x (* (- y x) (/ z t))))
double code(double x, double y, double z, double t) {
return x + ((y - x) * (z / t));
}
real(8) function code(x, y, z, t)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8), intent (in) :: t
code = x + ((y - x) * (z / t))
end function
public static double code(double x, double y, double z, double t) {
return x + ((y - x) * (z / t));
}
def code(x, y, z, t): return x + ((y - x) * (z / t))
function code(x, y, z, t) return Float64(x + Float64(Float64(y - x) * Float64(z / t))) end
function tmp = code(x, y, z, t) tmp = x + ((y - x) * (z / t)); end
code[x_, y_, z_, t_] := N[(x + N[(N[(y - x), $MachinePrecision] * N[(z / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x + \left(y - x\right) \cdot \frac{z}{t}
\end{array}
(FPCore (x y z t) :precision binary64 (+ x (* (- y x) (/ z t))))
double code(double x, double y, double z, double t) {
return x + ((y - x) * (z / t));
}
real(8) function code(x, y, z, t)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8), intent (in) :: t
code = x + ((y - x) * (z / t))
end function
public static double code(double x, double y, double z, double t) {
return x + ((y - x) * (z / t));
}
def code(x, y, z, t): return x + ((y - x) * (z / t))
function code(x, y, z, t) return Float64(x + Float64(Float64(y - x) * Float64(z / t))) end
function tmp = code(x, y, z, t) tmp = x + ((y - x) * (z / t)); end
code[x_, y_, z_, t_] := N[(x + N[(N[(y - x), $MachinePrecision] * N[(z / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x + \left(y - x\right) \cdot \frac{z}{t}
\end{array}
Initial program 97.6%
(FPCore (x y z t)
:precision binary64
(let* ((t_1 (* (- y x) (/ z t))))
(if (<= (/ z t) -1.65e-64)
t_1
(if (<= (/ z t) 5.5e-15) (+ x (/ z t)) t_1))))
double code(double x, double y, double z, double t) {
double t_1 = (y - x) * (z / t);
double tmp;
if ((z / t) <= -1.65e-64) {
tmp = t_1;
} else if ((z / t) <= 5.5e-15) {
tmp = x + (z / t);
} else {
tmp = t_1;
}
return tmp;
}
real(8) function code(x, y, z, t)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8), intent (in) :: t
real(8) :: t_1
real(8) :: tmp
t_1 = (y - x) * (z / t)
if ((z / t) <= (-1.65d-64)) then
tmp = t_1
else if ((z / t) <= 5.5d-15) then
tmp = x + (z / t)
else
tmp = t_1
end if
code = tmp
end function
public static double code(double x, double y, double z, double t) {
double t_1 = (y - x) * (z / t);
double tmp;
if ((z / t) <= -1.65e-64) {
tmp = t_1;
} else if ((z / t) <= 5.5e-15) {
tmp = x + (z / t);
} else {
tmp = t_1;
}
return tmp;
}
def code(x, y, z, t): t_1 = (y - x) * (z / t) tmp = 0 if (z / t) <= -1.65e-64: tmp = t_1 elif (z / t) <= 5.5e-15: tmp = x + (z / t) else: tmp = t_1 return tmp
function code(x, y, z, t) t_1 = Float64(Float64(y - x) * Float64(z / t)) tmp = 0.0 if (Float64(z / t) <= -1.65e-64) tmp = t_1; elseif (Float64(z / t) <= 5.5e-15) tmp = Float64(x + Float64(z / t)); else tmp = t_1; end return tmp end
function tmp_2 = code(x, y, z, t) t_1 = (y - x) * (z / t); tmp = 0.0; if ((z / t) <= -1.65e-64) tmp = t_1; elseif ((z / t) <= 5.5e-15) tmp = x + (z / t); else tmp = t_1; end tmp_2 = tmp; end
code[x_, y_, z_, t_] := Block[{t$95$1 = N[(N[(y - x), $MachinePrecision] * N[(z / t), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[N[(z / t), $MachinePrecision], -1.65e-64], t$95$1, If[LessEqual[N[(z / t), $MachinePrecision], 5.5e-15], N[(x + N[(z / t), $MachinePrecision]), $MachinePrecision], t$95$1]]]
\begin{array}{l}
\\
\begin{array}{l}
t_1 := \left(y - x\right) \cdot \frac{z}{t}\\
\mathbf{if}\;\frac{z}{t} \leq -1.65 \cdot 10^{-64}:\\
\;\;\;\;t\_1\\
\mathbf{elif}\;\frac{z}{t} \leq 5.5 \cdot 10^{-15}:\\
\;\;\;\;x + \frac{z}{t}\\
\mathbf{else}:\\
\;\;\;\;t\_1\\
\end{array}
\end{array}
if (/.f64 z t) < -1.65e-64 or 5.5000000000000002e-15 < (/.f64 z t) Initial program 96.6%
Taylor expanded in x around 0
Applied rewrites89.1%
if -1.65e-64 < (/.f64 z t) < 5.5000000000000002e-15Initial program 98.9%
Taylor expanded in x around 0
Applied rewrites3.3%
Taylor expanded in x around 0
Applied rewrites73.9%
(FPCore (x y z t) :precision binary64 (if (<= (/ z t) 1.22e+45) (+ x (+ x (- y x))) (/ z t)))
double code(double x, double y, double z, double t) {
double tmp;
if ((z / t) <= 1.22e+45) {
tmp = x + (x + (y - x));
} else {
tmp = z / t;
}
return tmp;
}
real(8) function code(x, y, z, t)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8), intent (in) :: t
real(8) :: tmp
if ((z / t) <= 1.22d+45) then
tmp = x + (x + (y - x))
else
tmp = z / t
end if
code = tmp
end function
public static double code(double x, double y, double z, double t) {
double tmp;
if ((z / t) <= 1.22e+45) {
tmp = x + (x + (y - x));
} else {
tmp = z / t;
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if (z / t) <= 1.22e+45: tmp = x + (x + (y - x)) else: tmp = z / t return tmp
function code(x, y, z, t) tmp = 0.0 if (Float64(z / t) <= 1.22e+45) tmp = Float64(x + Float64(x + Float64(y - x))); else tmp = Float64(z / t); end return tmp end
function tmp_2 = code(x, y, z, t) tmp = 0.0; if ((z / t) <= 1.22e+45) tmp = x + (x + (y - x)); else tmp = z / t; end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[LessEqual[N[(z / t), $MachinePrecision], 1.22e+45], N[(x + N[(x + N[(y - x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(z / t), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;\frac{z}{t} \leq 1.22 \cdot 10^{+45}:\\
\;\;\;\;x + \left(x + \left(y - x\right)\right)\\
\mathbf{else}:\\
\;\;\;\;\frac{z}{t}\\
\end{array}
\end{array}
if (/.f64 z t) < 1.21999999999999997e45Initial program 97.9%
Taylor expanded in x around 0
Applied rewrites2.9%
Taylor expanded in x around 0
Applied rewrites29.9%
if 1.21999999999999997e45 < (/.f64 z t) Initial program 96.5%
Taylor expanded in x around 0
Applied rewrites96.5%
Taylor expanded in x around 0
Applied rewrites5.9%
Taylor expanded in x around inf
Applied rewrites13.3%
(FPCore (x y z t) :precision binary64 (+ x (/ z t)))
double code(double x, double y, double z, double t) {
return x + (z / t);
}
real(8) function code(x, y, z, t)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8), intent (in) :: t
code = x + (z / t)
end function
public static double code(double x, double y, double z, double t) {
return x + (z / t);
}
def code(x, y, z, t): return x + (z / t)
function code(x, y, z, t) return Float64(x + Float64(z / t)) end
function tmp = code(x, y, z, t) tmp = x + (z / t); end
code[x_, y_, z_, t_] := N[(x + N[(z / t), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x + \frac{z}{t}
\end{array}
Initial program 97.6%
Taylor expanded in x around 0
Applied rewrites3.0%
Taylor expanded in x around 0
Applied rewrites39.7%
(FPCore (x y z t) :precision binary64 (+ x (+ x (- y x))))
double code(double x, double y, double z, double t) {
return x + (x + (y - x));
}
real(8) function code(x, y, z, t)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8), intent (in) :: t
code = x + (x + (y - x))
end function
public static double code(double x, double y, double z, double t) {
return x + (x + (y - x));
}
def code(x, y, z, t): return x + (x + (y - x))
function code(x, y, z, t) return Float64(x + Float64(x + Float64(y - x))) end
function tmp = code(x, y, z, t) tmp = x + (x + (y - x)); end
code[x_, y_, z_, t_] := N[(x + N[(x + N[(y - x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x + \left(x + \left(y - x\right)\right)
\end{array}
Initial program 97.6%
Taylor expanded in x around 0
Applied rewrites3.0%
Taylor expanded in x around 0
Applied rewrites24.5%
(FPCore (x y z t) :precision binary64 (- y x))
double code(double x, double y, double z, double t) {
return y - x;
}
real(8) function code(x, y, z, t)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8), intent (in) :: t
code = y - x
end function
public static double code(double x, double y, double z, double t) {
return y - x;
}
def code(x, y, z, t): return y - x
function code(x, y, z, t) return Float64(y - x) end
function tmp = code(x, y, z, t) tmp = y - x; end
code[x_, y_, z_, t_] := N[(y - x), $MachinePrecision]
\begin{array}{l}
\\
y - x
\end{array}
Initial program 97.6%
Taylor expanded in x around 0
Applied rewrites58.3%
Taylor expanded in x around 0
Applied rewrites3.0%
(FPCore (x y z t)
:precision binary64
(let* ((t_1 (* (- y x) (/ z t))) (t_2 (+ x (/ (- y x) (/ t z)))))
(if (< t_1 -1013646692435.8867)
t_2
(if (< t_1 0.0) (+ x (/ (* (- y x) z) t)) t_2))))
double code(double x, double y, double z, double t) {
double t_1 = (y - x) * (z / t);
double t_2 = x + ((y - x) / (t / z));
double tmp;
if (t_1 < -1013646692435.8867) {
tmp = t_2;
} else if (t_1 < 0.0) {
tmp = x + (((y - x) * z) / t);
} else {
tmp = t_2;
}
return tmp;
}
real(8) function code(x, y, z, t)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8), intent (in) :: t
real(8) :: t_1
real(8) :: t_2
real(8) :: tmp
t_1 = (y - x) * (z / t)
t_2 = x + ((y - x) / (t / z))
if (t_1 < (-1013646692435.8867d0)) then
tmp = t_2
else if (t_1 < 0.0d0) then
tmp = x + (((y - x) * z) / t)
else
tmp = t_2
end if
code = tmp
end function
public static double code(double x, double y, double z, double t) {
double t_1 = (y - x) * (z / t);
double t_2 = x + ((y - x) / (t / z));
double tmp;
if (t_1 < -1013646692435.8867) {
tmp = t_2;
} else if (t_1 < 0.0) {
tmp = x + (((y - x) * z) / t);
} else {
tmp = t_2;
}
return tmp;
}
def code(x, y, z, t): t_1 = (y - x) * (z / t) t_2 = x + ((y - x) / (t / z)) tmp = 0 if t_1 < -1013646692435.8867: tmp = t_2 elif t_1 < 0.0: tmp = x + (((y - x) * z) / t) else: tmp = t_2 return tmp
function code(x, y, z, t) t_1 = Float64(Float64(y - x) * Float64(z / t)) t_2 = Float64(x + Float64(Float64(y - x) / Float64(t / z))) tmp = 0.0 if (t_1 < -1013646692435.8867) tmp = t_2; elseif (t_1 < 0.0) tmp = Float64(x + Float64(Float64(Float64(y - x) * z) / t)); else tmp = t_2; end return tmp end
function tmp_2 = code(x, y, z, t) t_1 = (y - x) * (z / t); t_2 = x + ((y - x) / (t / z)); tmp = 0.0; if (t_1 < -1013646692435.8867) tmp = t_2; elseif (t_1 < 0.0) tmp = x + (((y - x) * z) / t); else tmp = t_2; end tmp_2 = tmp; end
code[x_, y_, z_, t_] := Block[{t$95$1 = N[(N[(y - x), $MachinePrecision] * N[(z / t), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$2 = N[(x + N[(N[(y - x), $MachinePrecision] / N[(t / z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[Less[t$95$1, -1013646692435.8867], t$95$2, If[Less[t$95$1, 0.0], N[(x + N[(N[(N[(y - x), $MachinePrecision] * z), $MachinePrecision] / t), $MachinePrecision]), $MachinePrecision], t$95$2]]]]
\begin{array}{l}
\\
\begin{array}{l}
t_1 := \left(y - x\right) \cdot \frac{z}{t}\\
t_2 := x + \frac{y - x}{\frac{t}{z}}\\
\mathbf{if}\;t\_1 < -1013646692435.8867:\\
\;\;\;\;t\_2\\
\mathbf{elif}\;t\_1 < 0:\\
\;\;\;\;x + \frac{\left(y - x\right) \cdot z}{t}\\
\mathbf{else}:\\
\;\;\;\;t\_2\\
\end{array}
\end{array}
herbie shell --seed 2024313
(FPCore (x y z t)
:name "Graphics.Rendering.Plot.Render.Plot.Axis:tickPosition from plot-0.2.3.4"
:precision binary64
:alt
(! :herbie-platform default (if (< (* (- y x) (/ z t)) -10136466924358867/10000) (+ x (/ (- y x) (/ t z))) (if (< (* (- y x) (/ z t)) 0) (+ x (/ (* (- y x) z) t)) (+ x (/ (- y x) (/ t z))))))
(+ x (* (- y x) (/ z t))))