
(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%
*-commutative100.0%
metadata-eval100.0%
associate-/l*100.0%
Simplified100.0%
Final simplification100.0%
(FPCore (x y z t)
:precision binary64
(if (or (<= x -0.03)
(not (or (<= x 1.9e+43) (and (not (<= x 5.5e+127)) (<= x 5.2e+158)))))
(+ (* 0.125 x) t)
(+ t (* z (* y -0.5)))))
double code(double x, double y, double z, double t) {
double tmp;
if ((x <= -0.03) || !((x <= 1.9e+43) || (!(x <= 5.5e+127) && (x <= 5.2e+158)))) {
tmp = (0.125 * x) + t;
} else {
tmp = t + (z * (y * -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 <= (-0.03d0)) .or. (.not. (x <= 1.9d+43) .or. (.not. (x <= 5.5d+127)) .and. (x <= 5.2d+158))) then
tmp = (0.125d0 * x) + t
else
tmp = t + (z * (y * (-0.5d0)))
end if
code = tmp
end function
public static double code(double x, double y, double z, double t) {
double tmp;
if ((x <= -0.03) || !((x <= 1.9e+43) || (!(x <= 5.5e+127) && (x <= 5.2e+158)))) {
tmp = (0.125 * x) + t;
} else {
tmp = t + (z * (y * -0.5));
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if (x <= -0.03) or not ((x <= 1.9e+43) or (not (x <= 5.5e+127) and (x <= 5.2e+158))): tmp = (0.125 * x) + t else: tmp = t + (z * (y * -0.5)) return tmp
function code(x, y, z, t) tmp = 0.0 if ((x <= -0.03) || !((x <= 1.9e+43) || (!(x <= 5.5e+127) && (x <= 5.2e+158)))) tmp = Float64(Float64(0.125 * x) + t); else tmp = Float64(t + Float64(z * Float64(y * -0.5))); end return tmp end
function tmp_2 = code(x, y, z, t) tmp = 0.0; if ((x <= -0.03) || ~(((x <= 1.9e+43) || (~((x <= 5.5e+127)) && (x <= 5.2e+158))))) tmp = (0.125 * x) + t; else tmp = t + (z * (y * -0.5)); end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[Or[LessEqual[x, -0.03], N[Not[Or[LessEqual[x, 1.9e+43], And[N[Not[LessEqual[x, 5.5e+127]], $MachinePrecision], LessEqual[x, 5.2e+158]]]], $MachinePrecision]], N[(N[(0.125 * x), $MachinePrecision] + t), $MachinePrecision], N[(t + N[(z * N[(y * -0.5), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -0.03 \lor \neg \left(x \leq 1.9 \cdot 10^{+43} \lor \neg \left(x \leq 5.5 \cdot 10^{+127}\right) \land x \leq 5.2 \cdot 10^{+158}\right):\\
\;\;\;\;0.125 \cdot x + t\\
\mathbf{else}:\\
\;\;\;\;t + z \cdot \left(y \cdot -0.5\right)\\
\end{array}
\end{array}
if x < -0.029999999999999999 or 1.90000000000000004e43 < x < 5.50000000000000041e127 or 5.2e158 < x Initial program 100.0%
associate-+l-100.0%
*-commutative100.0%
associate-+l-100.0%
*-commutative100.0%
metadata-eval100.0%
associate-/l*100.0%
Simplified100.0%
Taylor expanded in x around inf 83.0%
if -0.029999999999999999 < x < 1.90000000000000004e43 or 5.50000000000000041e127 < x < 5.2e158Initial program 100.0%
associate-+l-100.0%
*-commutative100.0%
associate-+l-100.0%
*-commutative100.0%
metadata-eval100.0%
associate-/l*100.0%
Simplified100.0%
Taylor expanded in x around 0 90.5%
associate-*r*90.5%
Simplified90.5%
Final simplification87.2%
(FPCore (x y z t)
:precision binary64
(if (or (<= y -2.2e+76)
(not
(or (<= y -3300000000.0) (and (not (<= y -2e-6)) (<= y 1.7e-41)))))
(* y (* z -0.5))
(+ (* 0.125 x) t)))
double code(double x, double y, double z, double t) {
double tmp;
if ((y <= -2.2e+76) || !((y <= -3300000000.0) || (!(y <= -2e-6) && (y <= 1.7e-41)))) {
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 ((y <= (-2.2d+76)) .or. (.not. (y <= (-3300000000.0d0)) .or. (.not. (y <= (-2d-6))) .and. (y <= 1.7d-41))) 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 ((y <= -2.2e+76) || !((y <= -3300000000.0) || (!(y <= -2e-6) && (y <= 1.7e-41)))) {
tmp = y * (z * -0.5);
} else {
tmp = (0.125 * x) + t;
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if (y <= -2.2e+76) or not ((y <= -3300000000.0) or (not (y <= -2e-6) and (y <= 1.7e-41))): tmp = y * (z * -0.5) else: tmp = (0.125 * x) + t return tmp
function code(x, y, z, t) tmp = 0.0 if ((y <= -2.2e+76) || !((y <= -3300000000.0) || (!(y <= -2e-6) && (y <= 1.7e-41)))) 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 ((y <= -2.2e+76) || ~(((y <= -3300000000.0) || (~((y <= -2e-6)) && (y <= 1.7e-41))))) tmp = y * (z * -0.5); else tmp = (0.125 * x) + t; end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[Or[LessEqual[y, -2.2e+76], N[Not[Or[LessEqual[y, -3300000000.0], And[N[Not[LessEqual[y, -2e-6]], $MachinePrecision], LessEqual[y, 1.7e-41]]]], $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}\;y \leq -2.2 \cdot 10^{+76} \lor \neg \left(y \leq -3300000000 \lor \neg \left(y \leq -2 \cdot 10^{-6}\right) \land y \leq 1.7 \cdot 10^{-41}\right):\\
\;\;\;\;y \cdot \left(z \cdot -0.5\right)\\
\mathbf{else}:\\
\;\;\;\;0.125 \cdot x + t\\
\end{array}
\end{array}
if y < -2.2e76 or -3.3e9 < y < -1.99999999999999991e-6 or 1.6999999999999999e-41 < y Initial program 100.0%
associate-+l-100.0%
*-commutative100.0%
associate-+l-100.0%
*-commutative100.0%
metadata-eval100.0%
associate-/l*100.0%
Simplified100.0%
Taylor expanded in x around 0 74.3%
associate-*r*74.3%
Simplified74.3%
Taylor expanded in y around inf 56.7%
associate-*r*56.7%
*-commutative56.7%
associate-*r*56.7%
Simplified56.7%
if -2.2e76 < y < -3.3e9 or -1.99999999999999991e-6 < y < 1.6999999999999999e-41Initial program 100.0%
associate-+l-100.0%
*-commutative100.0%
associate-+l-100.0%
*-commutative100.0%
metadata-eval100.0%
associate-/l*100.0%
Simplified100.0%
Taylor expanded in x around inf 86.9%
Final simplification71.3%
(FPCore (x y z t) :precision binary64 (if (<= t -1.65e+100) t (if (<= t 1.1e+51) (* y (* z -0.5)) t)))
double code(double x, double y, double z, double t) {
double tmp;
if (t <= -1.65e+100) {
tmp = t;
} else if (t <= 1.1e+51) {
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 <= (-1.65d+100)) then
tmp = t
else if (t <= 1.1d+51) 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 <= -1.65e+100) {
tmp = t;
} else if (t <= 1.1e+51) {
tmp = y * (z * -0.5);
} else {
tmp = t;
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if t <= -1.65e+100: tmp = t elif t <= 1.1e+51: tmp = y * (z * -0.5) else: tmp = t return tmp
function code(x, y, z, t) tmp = 0.0 if (t <= -1.65e+100) tmp = t; elseif (t <= 1.1e+51) 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 <= -1.65e+100) tmp = t; elseif (t <= 1.1e+51) tmp = y * (z * -0.5); else tmp = t; end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[LessEqual[t, -1.65e+100], t, If[LessEqual[t, 1.1e+51], N[(y * N[(z * -0.5), $MachinePrecision]), $MachinePrecision], t]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;t \leq -1.65 \cdot 10^{+100}:\\
\;\;\;\;t\\
\mathbf{elif}\;t \leq 1.1 \cdot 10^{+51}:\\
\;\;\;\;y \cdot \left(z \cdot -0.5\right)\\
\mathbf{else}:\\
\;\;\;\;t\\
\end{array}
\end{array}
if t < -1.6500000000000001e100 or 1.09999999999999996e51 < t Initial program 100.0%
associate-+l-100.0%
*-commutative100.0%
associate-+l-100.0%
*-commutative100.0%
metadata-eval100.0%
associate-/l*100.0%
Simplified100.0%
Taylor expanded in x around 0 84.8%
associate-*r*84.8%
Simplified84.8%
Taylor expanded in y around 0 73.0%
if -1.6500000000000001e100 < t < 1.09999999999999996e51Initial program 100.0%
associate-+l-100.0%
*-commutative100.0%
associate-+l-100.0%
*-commutative100.0%
metadata-eval100.0%
associate-/l*100.0%
Simplified100.0%
Taylor expanded in x around 0 57.9%
associate-*r*57.9%
Simplified57.9%
Taylor expanded in y around inf 47.5%
associate-*r*47.5%
*-commutative47.5%
associate-*r*47.5%
Simplified47.5%
Final simplification55.7%
(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%
*-commutative100.0%
metadata-eval100.0%
associate-/l*100.0%
Simplified100.0%
Taylor expanded in x around 0 66.6%
associate-*r*66.6%
Simplified66.6%
Taylor expanded in y around 0 32.5%
Final simplification32.5%
(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 2024076
(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))