
(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 97.5%
(FPCore (x y z t) :precision binary64 (if (or (<= (/ z t) -20000000000000.0) (not (<= (/ z t) 0.02))) (/ (* (- y x) z) t) (+ x (* y (/ z t)))))
double code(double x, double y, double z, double t) {
double tmp;
if (((z / t) <= -20000000000000.0) || !((z / t) <= 0.02)) {
tmp = ((y - x) * z) / t;
} else {
tmp = x + (y * (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) <= (-20000000000000.0d0)) .or. (.not. ((z / t) <= 0.02d0))) then
tmp = ((y - x) * z) / t
else
tmp = x + (y * (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) <= -20000000000000.0) || !((z / t) <= 0.02)) {
tmp = ((y - x) * z) / t;
} else {
tmp = x + (y * (z / t));
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if ((z / t) <= -20000000000000.0) or not ((z / t) <= 0.02): tmp = ((y - x) * z) / t else: tmp = x + (y * (z / t)) return tmp
function code(x, y, z, t) tmp = 0.0 if ((Float64(z / t) <= -20000000000000.0) || !(Float64(z / t) <= 0.02)) tmp = Float64(Float64(Float64(y - x) * z) / t); else tmp = Float64(x + Float64(y * Float64(z / t))); end return tmp end
function tmp_2 = code(x, y, z, t) tmp = 0.0; if (((z / t) <= -20000000000000.0) || ~(((z / t) <= 0.02))) tmp = ((y - x) * z) / t; else tmp = x + (y * (z / t)); end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[Or[LessEqual[N[(z / t), $MachinePrecision], -20000000000000.0], N[Not[LessEqual[N[(z / t), $MachinePrecision], 0.02]], $MachinePrecision]], N[(N[(N[(y - x), $MachinePrecision] * z), $MachinePrecision] / t), $MachinePrecision], N[(x + N[(y * N[(z / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;\frac{z}{t} \leq -20000000000000 \lor \neg \left(\frac{z}{t} \leq 0.02\right):\\
\;\;\;\;\frac{\left(y - x\right) \cdot z}{t}\\
\mathbf{else}:\\
\;\;\;\;x + y \cdot \frac{z}{t}\\
\end{array}
\end{array}
if (/.f64 z t) < -2e13 or 0.0200000000000000004 < (/.f64 z t) Initial program 96.8%
Taylor expanded in z around inf 95.7%
associate--l+95.7%
div-sub96.4%
Simplified96.4%
Taylor expanded in z around inf 96.4%
div-sub97.2%
associate-/l*96.1%
Simplified96.1%
if -2e13 < (/.f64 z t) < 0.0200000000000000004Initial program 98.1%
Taylor expanded in y around inf 93.5%
associate-*r/96.9%
Simplified96.9%
Final simplification96.5%
(FPCore (x y z t) :precision binary64 (if (or (<= (/ z t) -2e-34) (not (<= (/ z t) 5e-76))) (* y (/ z t)) x))
double code(double x, double y, double z, double t) {
double tmp;
if (((z / t) <= -2e-34) || !((z / t) <= 5e-76)) {
tmp = y * (z / t);
} else {
tmp = x;
}
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) <= (-2d-34)) .or. (.not. ((z / t) <= 5d-76))) then
tmp = y * (z / t)
else
tmp = x
end if
code = tmp
end function
public static double code(double x, double y, double z, double t) {
double tmp;
if (((z / t) <= -2e-34) || !((z / t) <= 5e-76)) {
tmp = y * (z / t);
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if ((z / t) <= -2e-34) or not ((z / t) <= 5e-76): tmp = y * (z / t) else: tmp = x return tmp
function code(x, y, z, t) tmp = 0.0 if ((Float64(z / t) <= -2e-34) || !(Float64(z / t) <= 5e-76)) tmp = Float64(y * Float64(z / t)); else tmp = x; end return tmp end
function tmp_2 = code(x, y, z, t) tmp = 0.0; if (((z / t) <= -2e-34) || ~(((z / t) <= 5e-76))) tmp = y * (z / t); else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[Or[LessEqual[N[(z / t), $MachinePrecision], -2e-34], N[Not[LessEqual[N[(z / t), $MachinePrecision], 5e-76]], $MachinePrecision]], N[(y * N[(z / t), $MachinePrecision]), $MachinePrecision], x]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;\frac{z}{t} \leq -2 \cdot 10^{-34} \lor \neg \left(\frac{z}{t} \leq 5 \cdot 10^{-76}\right):\\
\;\;\;\;y \cdot \frac{z}{t}\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
if (/.f64 z t) < -1.99999999999999986e-34 or 4.9999999999999998e-76 < (/.f64 z t) Initial program 97.3%
Taylor expanded in z around inf 93.8%
associate--l+93.8%
div-sub94.4%
Simplified94.4%
Taylor expanded in x around 0 47.2%
associate-/l*53.4%
Simplified53.4%
if -1.99999999999999986e-34 < (/.f64 z t) < 4.9999999999999998e-76Initial program 97.7%
Taylor expanded in z around 0 82.0%
Final simplification64.8%
(FPCore (x y z t) :precision binary64 (if (or (<= y -4.9e-82) (not (<= y 2.05e-16))) (+ x (* y (/ z t))) (* x (- 1.0 (/ z t)))))
double code(double x, double y, double z, double t) {
double tmp;
if ((y <= -4.9e-82) || !(y <= 2.05e-16)) {
tmp = x + (y * (z / t));
} else {
tmp = x * (1.0 - (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 ((y <= (-4.9d-82)) .or. (.not. (y <= 2.05d-16))) then
tmp = x + (y * (z / t))
else
tmp = x * (1.0d0 - (z / t))
end if
code = tmp
end function
public static double code(double x, double y, double z, double t) {
double tmp;
if ((y <= -4.9e-82) || !(y <= 2.05e-16)) {
tmp = x + (y * (z / t));
} else {
tmp = x * (1.0 - (z / t));
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if (y <= -4.9e-82) or not (y <= 2.05e-16): tmp = x + (y * (z / t)) else: tmp = x * (1.0 - (z / t)) return tmp
function code(x, y, z, t) tmp = 0.0 if ((y <= -4.9e-82) || !(y <= 2.05e-16)) tmp = Float64(x + Float64(y * Float64(z / t))); else tmp = Float64(x * Float64(1.0 - Float64(z / t))); end return tmp end
function tmp_2 = code(x, y, z, t) tmp = 0.0; if ((y <= -4.9e-82) || ~((y <= 2.05e-16))) tmp = x + (y * (z / t)); else tmp = x * (1.0 - (z / t)); end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[Or[LessEqual[y, -4.9e-82], N[Not[LessEqual[y, 2.05e-16]], $MachinePrecision]], N[(x + N[(y * N[(z / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(x * N[(1.0 - N[(z / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -4.9 \cdot 10^{-82} \lor \neg \left(y \leq 2.05 \cdot 10^{-16}\right):\\
\;\;\;\;x + y \cdot \frac{z}{t}\\
\mathbf{else}:\\
\;\;\;\;x \cdot \left(1 - \frac{z}{t}\right)\\
\end{array}
\end{array}
if y < -4.9000000000000003e-82 or 2.05000000000000003e-16 < y Initial program 98.3%
Taylor expanded in y around inf 85.0%
associate-*r/88.6%
Simplified88.6%
if -4.9000000000000003e-82 < y < 2.05000000000000003e-16Initial program 96.3%
Taylor expanded in x around inf 91.0%
mul-1-neg91.0%
unsub-neg91.0%
Simplified91.0%
Final simplification89.6%
(FPCore (x y z t) :precision binary64 (if (<= y -5.5e+55) (* z (/ y t)) (if (<= y 9.2e+63) (* x (- 1.0 (/ z t))) (* y (/ z t)))))
double code(double x, double y, double z, double t) {
double tmp;
if (y <= -5.5e+55) {
tmp = z * (y / t);
} else if (y <= 9.2e+63) {
tmp = x * (1.0 - (z / t));
} else {
tmp = y * (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 (y <= (-5.5d+55)) then
tmp = z * (y / t)
else if (y <= 9.2d+63) then
tmp = x * (1.0d0 - (z / t))
else
tmp = y * (z / t)
end if
code = tmp
end function
public static double code(double x, double y, double z, double t) {
double tmp;
if (y <= -5.5e+55) {
tmp = z * (y / t);
} else if (y <= 9.2e+63) {
tmp = x * (1.0 - (z / t));
} else {
tmp = y * (z / t);
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if y <= -5.5e+55: tmp = z * (y / t) elif y <= 9.2e+63: tmp = x * (1.0 - (z / t)) else: tmp = y * (z / t) return tmp
function code(x, y, z, t) tmp = 0.0 if (y <= -5.5e+55) tmp = Float64(z * Float64(y / t)); elseif (y <= 9.2e+63) tmp = Float64(x * Float64(1.0 - Float64(z / t))); else tmp = Float64(y * Float64(z / t)); end return tmp end
function tmp_2 = code(x, y, z, t) tmp = 0.0; if (y <= -5.5e+55) tmp = z * (y / t); elseif (y <= 9.2e+63) tmp = x * (1.0 - (z / t)); else tmp = y * (z / t); end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[LessEqual[y, -5.5e+55], N[(z * N[(y / t), $MachinePrecision]), $MachinePrecision], If[LessEqual[y, 9.2e+63], N[(x * N[(1.0 - N[(z / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(y * N[(z / t), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -5.5 \cdot 10^{+55}:\\
\;\;\;\;z \cdot \frac{y}{t}\\
\mathbf{elif}\;y \leq 9.2 \cdot 10^{+63}:\\
\;\;\;\;x \cdot \left(1 - \frac{z}{t}\right)\\
\mathbf{else}:\\
\;\;\;\;y \cdot \frac{z}{t}\\
\end{array}
\end{array}
if y < -5.5000000000000004e55Initial program 98.0%
Taylor expanded in z around inf 89.0%
associate--l+89.0%
div-sub89.0%
Simplified89.0%
Taylor expanded in x around 0 75.3%
if -5.5000000000000004e55 < y < 9.19999999999999973e63Initial program 97.4%
Taylor expanded in x around inf 87.1%
mul-1-neg87.1%
unsub-neg87.1%
Simplified87.1%
if 9.19999999999999973e63 < y Initial program 97.1%
Taylor expanded in z around inf 82.4%
associate--l+82.4%
div-sub84.4%
Simplified84.4%
Taylor expanded in x around 0 63.0%
associate-/l*64.1%
Simplified64.1%
(FPCore (x y z t) :precision binary64 x)
double code(double x, double y, double z, double t) {
return 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
end function
public static double code(double x, double y, double z, double t) {
return x;
}
def code(x, y, z, t): return x
function code(x, y, z, t) return x end
function tmp = code(x, y, z, t) tmp = x; end
code[x_, y_, z_, t_] := x
\begin{array}{l}
\\
x
\end{array}
Initial program 97.5%
Taylor expanded in z around 0 36.6%
(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 2024111
(FPCore (x y z t)
:name "Graphics.Rendering.Plot.Render.Plot.Axis:tickPosition from plot-0.2.3.4"
:precision binary64
:alt
(if (< (* (- y x) (/ z t)) -1013646692435.8867) (+ x (/ (- y x) (/ t z))) (if (< (* (- y x) (/ z t)) 0.0) (+ x (/ (* (- y x) z) t)) (+ x (/ (- y x) (/ t z)))))
(+ x (* (- y x) (/ z t))))