
(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 5 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 100.0%
associate-+l-100.0%
*-commutative100.0%
associate-+l-100.0%
metadata-eval100.0%
*-commutative100.0%
associate-/l*100.0%
Simplified100.0%
Final simplification100.0%
(FPCore (x y z t) :precision binary64 (if (or (<= z -1.6e-128) (not (<= z 4.6e+17))) (+ t (* z (* y -0.5))) (+ (* 0.125 x) t)))
double code(double x, double y, double z, double t) {
double tmp;
if ((z <= -1.6e-128) || !(z <= 4.6e+17)) {
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 ((z <= (-1.6d-128)) .or. (.not. (z <= 4.6d+17))) 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 ((z <= -1.6e-128) || !(z <= 4.6e+17)) {
tmp = t + (z * (y * -0.5));
} else {
tmp = (0.125 * x) + t;
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if (z <= -1.6e-128) or not (z <= 4.6e+17): tmp = t + (z * (y * -0.5)) else: tmp = (0.125 * x) + t return tmp
function code(x, y, z, t) tmp = 0.0 if ((z <= -1.6e-128) || !(z <= 4.6e+17)) 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 ((z <= -1.6e-128) || ~((z <= 4.6e+17))) 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[z, -1.6e-128], N[Not[LessEqual[z, 4.6e+17]], $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}\;z \leq -1.6 \cdot 10^{-128} \lor \neg \left(z \leq 4.6 \cdot 10^{+17}\right):\\
\;\;\;\;t + z \cdot \left(y \cdot -0.5\right)\\
\mathbf{else}:\\
\;\;\;\;0.125 \cdot x + t\\
\end{array}
\end{array}
if z < -1.5999999999999999e-128 or 4.6e17 < z 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 0 78.1%
associate-*r*78.1%
Simplified78.1%
if -1.5999999999999999e-128 < z < 4.6e17Initial 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 84.7%
Final simplification80.6%
(FPCore (x y z t) :precision binary64 (if (or (<= z -1.62e-15) (not (<= z 5.4e+125))) (* y (* z -0.5)) (+ (* 0.125 x) t)))
double code(double x, double y, double z, double t) {
double tmp;
if ((z <= -1.62e-15) || !(z <= 5.4e+125)) {
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 <= (-1.62d-15)) .or. (.not. (z <= 5.4d+125))) 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 <= -1.62e-15) || !(z <= 5.4e+125)) {
tmp = y * (z * -0.5);
} else {
tmp = (0.125 * x) + t;
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if (z <= -1.62e-15) or not (z <= 5.4e+125): tmp = y * (z * -0.5) else: tmp = (0.125 * x) + t return tmp
function code(x, y, z, t) tmp = 0.0 if ((z <= -1.62e-15) || !(z <= 5.4e+125)) 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 <= -1.62e-15) || ~((z <= 5.4e+125))) 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, -1.62e-15], N[Not[LessEqual[z, 5.4e+125]], $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 -1.62 \cdot 10^{-15} \lor \neg \left(z \leq 5.4 \cdot 10^{+125}\right):\\
\;\;\;\;y \cdot \left(z \cdot -0.5\right)\\
\mathbf{else}:\\
\;\;\;\;0.125 \cdot x + t\\
\end{array}
\end{array}
if z < -1.62000000000000009e-15 or 5.3999999999999997e125 < z 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 0 85.0%
associate-*r*85.0%
Simplified85.0%
Taylor expanded in y around inf 65.9%
associate-*r*65.9%
*-commutative65.9%
associate-*r*65.9%
Simplified65.9%
if -1.62000000000000009e-15 < z < 5.3999999999999997e125Initial 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 75.0%
Final simplification71.1%
(FPCore (x y z t) :precision binary64 (if (<= t -1.4e+84) t (if (<= t 6.6e+119) (* y (* z -0.5)) t)))
double code(double x, double y, double z, double t) {
double tmp;
if (t <= -1.4e+84) {
tmp = t;
} else if (t <= 6.6e+119) {
tmp = y * (z * -0.5);
} 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 (t <= (-1.4d+84)) then
tmp = t
else if (t <= 6.6d+119) then
tmp = y * (z * (-0.5d0))
else
tmp = t
end if
code = tmp
end function
public static double code(double x, double y, double z, double t) {
double tmp;
if (t <= -1.4e+84) {
tmp = t;
} else if (t <= 6.6e+119) {
tmp = y * (z * -0.5);
} else {
tmp = t;
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if t <= -1.4e+84: tmp = t elif t <= 6.6e+119: tmp = y * (z * -0.5) else: tmp = t return tmp
function code(x, y, z, t) tmp = 0.0 if (t <= -1.4e+84) tmp = t; elseif (t <= 6.6e+119) tmp = Float64(y * Float64(z * -0.5)); else tmp = t; end return tmp end
function tmp_2 = code(x, y, z, t) tmp = 0.0; if (t <= -1.4e+84) tmp = t; elseif (t <= 6.6e+119) tmp = y * (z * -0.5); else tmp = t; end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[LessEqual[t, -1.4e+84], t, If[LessEqual[t, 6.6e+119], N[(y * N[(z * -0.5), $MachinePrecision]), $MachinePrecision], t]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;t \leq -1.4 \cdot 10^{+84}:\\
\;\;\;\;t\\
\mathbf{elif}\;t \leq 6.6 \cdot 10^{+119}:\\
\;\;\;\;y \cdot \left(z \cdot -0.5\right)\\
\mathbf{else}:\\
\;\;\;\;t\\
\end{array}
\end{array}
if t < -1.39999999999999991e84 or 6.6000000000000004e119 < t 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 0 85.4%
associate-*r*85.4%
Simplified85.4%
Taylor expanded in y around 0 63.9%
if -1.39999999999999991e84 < t < 6.6000000000000004e119Initial 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 0 62.2%
associate-*r*62.2%
Simplified62.2%
Taylor expanded in y around inf 53.6%
associate-*r*53.6%
*-commutative53.6%
associate-*r*53.6%
Simplified53.6%
Final simplification57.0%
(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 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 0 69.8%
associate-*r*69.8%
Simplified69.8%
Taylor expanded in y around 0 28.6%
Final simplification28.6%
(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 2024053
(FPCore (x y z t)
:name "Diagrams.Solve.Polynomial:quartForm from diagrams-solve-0.1, B"
:precision binary64
:alt
(- (+ (/ x 8.0) t) (* (/ z 2.0) y))
(+ (- (* (/ 1.0 8.0) x) (/ (* y z) 2.0)) t))