
(FPCore (x y z t) :precision binary64 (+ (- (* (/ 1.0 8.0) x) (/ (* y z) 2.0)) t))
double code(double x, double y, double z, double t) {
return (((1.0 / 8.0) * x) - ((y * z) / 2.0)) + 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 = (((1.0d0 / 8.0d0) * x) - ((y * z) / 2.0d0)) + t
end function
public static double code(double x, double y, double z, double t) {
return (((1.0 / 8.0) * x) - ((y * z) / 2.0)) + t;
}
def code(x, y, z, t): return (((1.0 / 8.0) * x) - ((y * z) / 2.0)) + t
function code(x, y, z, t) return Float64(Float64(Float64(Float64(1.0 / 8.0) * x) - Float64(Float64(y * z) / 2.0)) + t) end
function tmp = code(x, y, z, t) tmp = (((1.0 / 8.0) * x) - ((y * z) / 2.0)) + t; end
code[x_, y_, z_, t_] := N[(N[(N[(N[(1.0 / 8.0), $MachinePrecision] * x), $MachinePrecision] - N[(N[(y * z), $MachinePrecision] / 2.0), $MachinePrecision]), $MachinePrecision] + t), $MachinePrecision]
\begin{array}{l}
\\
\left(\frac{1}{8} \cdot x - \frac{y \cdot z}{2}\right) + t
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 6 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y z t) :precision binary64 (+ (- (* (/ 1.0 8.0) x) (/ (* y z) 2.0)) t))
double code(double x, double y, double z, double t) {
return (((1.0 / 8.0) * x) - ((y * z) / 2.0)) + 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 = (((1.0d0 / 8.0d0) * x) - ((y * z) / 2.0d0)) + t
end function
public static double code(double x, double y, double z, double t) {
return (((1.0 / 8.0) * x) - ((y * z) / 2.0)) + t;
}
def code(x, y, z, t): return (((1.0 / 8.0) * x) - ((y * z) / 2.0)) + t
function code(x, y, z, t) return Float64(Float64(Float64(Float64(1.0 / 8.0) * x) - Float64(Float64(y * z) / 2.0)) + t) end
function tmp = code(x, y, z, t) tmp = (((1.0 / 8.0) * x) - ((y * z) / 2.0)) + t; end
code[x_, y_, z_, t_] := N[(N[(N[(N[(1.0 / 8.0), $MachinePrecision] * x), $MachinePrecision] - N[(N[(y * z), $MachinePrecision] / 2.0), $MachinePrecision]), $MachinePrecision] + t), $MachinePrecision]
\begin{array}{l}
\\
\left(\frac{1}{8} \cdot x - \frac{y \cdot z}{2}\right) + t
\end{array}
(FPCore (x y z t) :precision binary64 (+ (- (* 0.125 x) (* y (/ z 2.0))) t))
double code(double x, double y, double z, double t) {
return ((0.125 * x) - (y * (z / 2.0))) + 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 = ((0.125d0 * x) - (y * (z / 2.0d0))) + t
end function
public static double code(double x, double y, double z, double t) {
return ((0.125 * x) - (y * (z / 2.0))) + t;
}
def code(x, y, z, t): return ((0.125 * x) - (y * (z / 2.0))) + t
function code(x, y, z, t) return Float64(Float64(Float64(0.125 * x) - Float64(y * Float64(z / 2.0))) + t) end
function tmp = code(x, y, z, t) tmp = ((0.125 * x) - (y * (z / 2.0))) + t; end
code[x_, y_, z_, t_] := N[(N[(N[(0.125 * x), $MachinePrecision] - N[(y * N[(z / 2.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + t), $MachinePrecision]
\begin{array}{l}
\\
\left(0.125 \cdot x - y \cdot \frac{z}{2}\right) + t
\end{array}
Initial program 99.7%
associate-+l-99.7%
*-commutative99.7%
associate-+l-99.7%
metadata-eval99.7%
*-commutative99.7%
associate-/l*100.0%
Simplified100.0%
(FPCore (x y z t) :precision binary64 (if (or (<= (* y z) -400000.0) (not (<= (* y z) 2e+70))) (- t (* z (* y 0.5))) (+ (* 0.125 x) t)))
double code(double x, double y, double z, double t) {
double tmp;
if (((y * z) <= -400000.0) || !((y * z) <= 2e+70)) {
tmp = t - (z * (y * 0.5));
} else {
tmp = (0.125 * x) + 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 * z) <= (-400000.0d0)) .or. (.not. ((y * z) <= 2d+70))) then
tmp = t - (z * (y * 0.5d0))
else
tmp = (0.125d0 * x) + t
end if
code = tmp
end function
public static double code(double x, double y, double z, double t) {
double tmp;
if (((y * z) <= -400000.0) || !((y * z) <= 2e+70)) {
tmp = t - (z * (y * 0.5));
} else {
tmp = (0.125 * x) + t;
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if ((y * z) <= -400000.0) or not ((y * z) <= 2e+70): tmp = t - (z * (y * 0.5)) else: tmp = (0.125 * x) + t return tmp
function code(x, y, z, t) tmp = 0.0 if ((Float64(y * z) <= -400000.0) || !(Float64(y * z) <= 2e+70)) tmp = Float64(t - Float64(z * Float64(y * 0.5))); else tmp = Float64(Float64(0.125 * x) + t); end return tmp end
function tmp_2 = code(x, y, z, t) tmp = 0.0; if (((y * z) <= -400000.0) || ~(((y * z) <= 2e+70))) tmp = t - (z * (y * 0.5)); else tmp = (0.125 * x) + t; end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[Or[LessEqual[N[(y * z), $MachinePrecision], -400000.0], N[Not[LessEqual[N[(y * z), $MachinePrecision], 2e+70]], $MachinePrecision]], N[(t - N[(z * N[(y * 0.5), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(N[(0.125 * x), $MachinePrecision] + t), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \cdot z \leq -400000 \lor \neg \left(y \cdot z \leq 2 \cdot 10^{+70}\right):\\
\;\;\;\;t - z \cdot \left(y \cdot 0.5\right)\\
\mathbf{else}:\\
\;\;\;\;0.125 \cdot x + t\\
\end{array}
\end{array}
if (*.f64 y z) < -4e5 or 2.00000000000000015e70 < (*.f64 y z) Initial program 99.3%
associate-+l-99.3%
*-commutative99.3%
associate-+l-99.3%
metadata-eval99.3%
*-commutative99.3%
associate-/l*100.0%
Simplified100.0%
Taylor expanded in x around 0 88.0%
associate-*r*88.7%
Simplified88.7%
if -4e5 < (*.f64 y z) < 2.00000000000000015e70Initial program 100.0%
associate-+l-100.0%
*-commutative100.0%
associate-+l-100.0%
metadata-eval100.0%
*-commutative100.0%
associate-/l*100.0%
Simplified100.0%
Taylor expanded in y around 0 89.5%
Final simplification89.1%
(FPCore (x y z t) :precision binary64 (if (or (<= z -1.42e+16) (not (<= z 4.2e+131))) (* y (* z -0.5)) (+ (* 0.125 x) t)))
double code(double x, double y, double z, double t) {
double tmp;
if ((z <= -1.42e+16) || !(z <= 4.2e+131)) {
tmp = y * (z * -0.5);
} else {
tmp = (0.125 * x) + 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 <= (-1.42d+16)) .or. (.not. (z <= 4.2d+131))) then
tmp = y * (z * (-0.5d0))
else
tmp = (0.125d0 * x) + t
end if
code = tmp
end function
public static double code(double x, double y, double z, double t) {
double tmp;
if ((z <= -1.42e+16) || !(z <= 4.2e+131)) {
tmp = y * (z * -0.5);
} else {
tmp = (0.125 * x) + t;
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if (z <= -1.42e+16) or not (z <= 4.2e+131): tmp = y * (z * -0.5) else: tmp = (0.125 * x) + t return tmp
function code(x, y, z, t) tmp = 0.0 if ((z <= -1.42e+16) || !(z <= 4.2e+131)) tmp = Float64(y * Float64(z * -0.5)); else tmp = Float64(Float64(0.125 * x) + t); end return tmp end
function tmp_2 = code(x, y, z, t) tmp = 0.0; if ((z <= -1.42e+16) || ~((z <= 4.2e+131))) tmp = y * (z * -0.5); else tmp = (0.125 * x) + t; end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[Or[LessEqual[z, -1.42e+16], N[Not[LessEqual[z, 4.2e+131]], $MachinePrecision]], N[(y * N[(z * -0.5), $MachinePrecision]), $MachinePrecision], N[(N[(0.125 * x), $MachinePrecision] + t), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -1.42 \cdot 10^{+16} \lor \neg \left(z \leq 4.2 \cdot 10^{+131}\right):\\
\;\;\;\;y \cdot \left(z \cdot -0.5\right)\\
\mathbf{else}:\\
\;\;\;\;0.125 \cdot x + t\\
\end{array}
\end{array}
if z < -1.42e16 or 4.19999999999999971e131 < z Initial program 99.2%
associate-+l-99.2%
*-commutative99.2%
associate-+l-99.2%
metadata-eval99.2%
*-commutative99.2%
associate-/l*100.0%
Simplified100.0%
Taylor expanded in y around inf 66.0%
*-commutative66.0%
associate-*r*66.8%
Simplified66.8%
if -1.42e16 < z < 4.19999999999999971e131Initial program 100.0%
associate-+l-100.0%
*-commutative100.0%
associate-+l-100.0%
metadata-eval100.0%
*-commutative100.0%
associate-/l*100.0%
Simplified100.0%
Taylor expanded in y around 0 79.4%
Final simplification74.3%
(FPCore (x y z t) :precision binary64 (if (or (<= x -8.8e+52) (not (<= x 9.5e+136))) (* 0.125 x) (* y (* z -0.5))))
double code(double x, double y, double z, double t) {
double tmp;
if ((x <= -8.8e+52) || !(x <= 9.5e+136)) {
tmp = 0.125 * x;
} else {
tmp = y * (z * -0.5);
}
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 ((x <= (-8.8d+52)) .or. (.not. (x <= 9.5d+136))) then
tmp = 0.125d0 * x
else
tmp = y * (z * (-0.5d0))
end if
code = tmp
end function
public static double code(double x, double y, double z, double t) {
double tmp;
if ((x <= -8.8e+52) || !(x <= 9.5e+136)) {
tmp = 0.125 * x;
} else {
tmp = y * (z * -0.5);
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if (x <= -8.8e+52) or not (x <= 9.5e+136): tmp = 0.125 * x else: tmp = y * (z * -0.5) return tmp
function code(x, y, z, t) tmp = 0.0 if ((x <= -8.8e+52) || !(x <= 9.5e+136)) tmp = Float64(0.125 * x); else tmp = Float64(y * Float64(z * -0.5)); end return tmp end
function tmp_2 = code(x, y, z, t) tmp = 0.0; if ((x <= -8.8e+52) || ~((x <= 9.5e+136))) tmp = 0.125 * x; else tmp = y * (z * -0.5); end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[Or[LessEqual[x, -8.8e+52], N[Not[LessEqual[x, 9.5e+136]], $MachinePrecision]], N[(0.125 * x), $MachinePrecision], N[(y * N[(z * -0.5), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -8.8 \cdot 10^{+52} \lor \neg \left(x \leq 9.5 \cdot 10^{+136}\right):\\
\;\;\;\;0.125 \cdot x\\
\mathbf{else}:\\
\;\;\;\;y \cdot \left(z \cdot -0.5\right)\\
\end{array}
\end{array}
if x < -8.7999999999999999e52 or 9.49999999999999907e136 < x Initial program 100.0%
associate-+l-100.0%
*-commutative100.0%
associate-+l-100.0%
metadata-eval100.0%
*-commutative100.0%
associate-/l*100.0%
Simplified100.0%
Taylor expanded in x around inf 70.1%
if -8.7999999999999999e52 < x < 9.49999999999999907e136Initial program 99.5%
associate-+l-99.5%
*-commutative99.5%
associate-+l-99.5%
metadata-eval99.5%
*-commutative99.5%
associate-/l*100.0%
Simplified100.0%
Taylor expanded in y around inf 52.7%
*-commutative52.7%
associate-*r*53.2%
Simplified53.2%
Final simplification59.1%
(FPCore (x y z t) :precision binary64 (if (or (<= x -1.7e+43) (not (<= x 2.75e+143))) (* 0.125 x) t))
double code(double x, double y, double z, double t) {
double tmp;
if ((x <= -1.7e+43) || !(x <= 2.75e+143)) {
tmp = 0.125 * x;
} else {
tmp = 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 ((x <= (-1.7d+43)) .or. (.not. (x <= 2.75d+143))) then
tmp = 0.125d0 * x
else
tmp = t
end if
code = tmp
end function
public static double code(double x, double y, double z, double t) {
double tmp;
if ((x <= -1.7e+43) || !(x <= 2.75e+143)) {
tmp = 0.125 * x;
} else {
tmp = t;
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if (x <= -1.7e+43) or not (x <= 2.75e+143): tmp = 0.125 * x else: tmp = t return tmp
function code(x, y, z, t) tmp = 0.0 if ((x <= -1.7e+43) || !(x <= 2.75e+143)) tmp = Float64(0.125 * x); else tmp = t; end return tmp end
function tmp_2 = code(x, y, z, t) tmp = 0.0; if ((x <= -1.7e+43) || ~((x <= 2.75e+143))) tmp = 0.125 * x; else tmp = t; end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[Or[LessEqual[x, -1.7e+43], N[Not[LessEqual[x, 2.75e+143]], $MachinePrecision]], N[(0.125 * x), $MachinePrecision], t]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -1.7 \cdot 10^{+43} \lor \neg \left(x \leq 2.75 \cdot 10^{+143}\right):\\
\;\;\;\;0.125 \cdot x\\
\mathbf{else}:\\
\;\;\;\;t\\
\end{array}
\end{array}
if x < -1.70000000000000006e43 or 2.74999999999999985e143 < x Initial program 100.0%
associate-+l-100.0%
*-commutative100.0%
associate-+l-100.0%
metadata-eval100.0%
*-commutative100.0%
associate-/l*100.0%
Simplified100.0%
Taylor expanded in x around inf 69.3%
if -1.70000000000000006e43 < x < 2.74999999999999985e143Initial program 99.5%
associate-+l-99.5%
*-commutative99.5%
associate-+l-99.5%
metadata-eval99.5%
*-commutative99.5%
associate-/l*100.0%
Simplified100.0%
Taylor expanded in t around inf 39.3%
Final simplification50.0%
(FPCore (x y z t) :precision binary64 t)
double code(double x, double y, double z, double t) {
return 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 = t
end function
public static double code(double x, double y, double z, double t) {
return t;
}
def code(x, y, z, t): return t
function code(x, y, z, t) return t end
function tmp = code(x, y, z, t) tmp = t; end
code[x_, y_, z_, t_] := t
\begin{array}{l}
\\
t
\end{array}
Initial program 99.7%
associate-+l-99.7%
*-commutative99.7%
associate-+l-99.7%
metadata-eval99.7%
*-commutative99.7%
associate-/l*100.0%
Simplified100.0%
Taylor expanded in t around inf 30.8%
(FPCore (x y z t) :precision binary64 (- (+ (/ x 8.0) t) (* (/ z 2.0) y)))
double code(double x, double y, double z, double t) {
return ((x / 8.0) + t) - ((z / 2.0) * y);
}
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 / 8.0d0) + t) - ((z / 2.0d0) * y)
end function
public static double code(double x, double y, double z, double t) {
return ((x / 8.0) + t) - ((z / 2.0) * y);
}
def code(x, y, z, t): return ((x / 8.0) + t) - ((z / 2.0) * y)
function code(x, y, z, t) return Float64(Float64(Float64(x / 8.0) + t) - Float64(Float64(z / 2.0) * y)) end
function tmp = code(x, y, z, t) tmp = ((x / 8.0) + t) - ((z / 2.0) * y); end
code[x_, y_, z_, t_] := N[(N[(N[(x / 8.0), $MachinePrecision] + t), $MachinePrecision] - N[(N[(z / 2.0), $MachinePrecision] * y), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(\frac{x}{8} + t\right) - \frac{z}{2} \cdot y
\end{array}
herbie shell --seed 2024116
(FPCore (x y z t)
:name "Diagrams.Solve.Polynomial:quartForm from diagrams-solve-0.1, B"
:precision binary64
:alt
(! :herbie-platform default (- (+ (/ x 8) t) (* (/ z 2) y)))
(+ (- (* (/ 1.0 8.0) x) (/ (* y z) 2.0)) t))