
(FPCore (x y z) :precision binary64 (+ (+ x y) z))
double code(double x, double y, double z) {
return (x + y) + z;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
code = (x + y) + z
end function
public static double code(double x, double y, double z) {
return (x + y) + z;
}
def code(x, y, z): return (x + y) + z
function code(x, y, z) return Float64(Float64(x + y) + z) end
function tmp = code(x, y, z) tmp = (x + y) + z; end
code[x_, y_, z_] := N[(N[(x + y), $MachinePrecision] + z), $MachinePrecision]
\begin{array}{l}
\\
\left(x + y\right) + z
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 6 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y z) :precision binary64 (+ (+ x y) z))
double code(double x, double y, double z) {
return (x + y) + z;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
code = (x + y) + z
end function
public static double code(double x, double y, double z) {
return (x + y) + z;
}
def code(x, y, z): return (x + y) + z
function code(x, y, z) return Float64(Float64(x + y) + z) end
function tmp = code(x, y, z) tmp = (x + y) + z; end
code[x_, y_, z_] := N[(N[(x + y), $MachinePrecision] + z), $MachinePrecision]
\begin{array}{l}
\\
\left(x + y\right) + z
\end{array}
(FPCore (x y z) :precision binary64 (+ (+ x y) z))
double code(double x, double y, double z) {
return (x + y) + z;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
code = (x + y) + z
end function
public static double code(double x, double y, double z) {
return (x + y) + z;
}
def code(x, y, z): return (x + y) + z
function code(x, y, z) return Float64(Float64(x + y) + z) end
function tmp = code(x, y, z) tmp = (x + y) + z; end
code[x_, y_, z_] := N[(N[(x + y), $MachinePrecision] + z), $MachinePrecision]
\begin{array}{l}
\\
\left(x + y\right) + z
\end{array}
Initial program 100.0%
(FPCore (x y z) :precision binary64 (if (<= x -4.6e+46) (+ x y) (+ y z)))
double code(double x, double y, double z) {
double tmp;
if (x <= -4.6e+46) {
tmp = x + y;
} else {
tmp = y + z;
}
return tmp;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8) :: tmp
if (x <= (-4.6d+46)) then
tmp = x + y
else
tmp = y + z
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if (x <= -4.6e+46) {
tmp = x + y;
} else {
tmp = y + z;
}
return tmp;
}
def code(x, y, z): tmp = 0 if x <= -4.6e+46: tmp = x + y else: tmp = y + z return tmp
function code(x, y, z) tmp = 0.0 if (x <= -4.6e+46) tmp = Float64(x + y); else tmp = Float64(y + z); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (x <= -4.6e+46) tmp = x + y; else tmp = y + z; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[x, -4.6e+46], N[(x + y), $MachinePrecision], N[(y + z), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -4.6 \cdot 10^{+46}:\\
\;\;\;\;x + y\\
\mathbf{else}:\\
\;\;\;\;y + z\\
\end{array}
\end{array}
if x < -4.6000000000000001e46Initial program 100.0%
Taylor expanded in z around 0 80.8%
+-commutative80.8%
Simplified80.8%
if -4.6000000000000001e46 < x Initial program 100.0%
Taylor expanded in x around 0 78.3%
Final simplification78.7%
(FPCore (x y z) :precision binary64 (if (<= x -5e+45) (+ x y) z))
double code(double x, double y, double z) {
double tmp;
if (x <= -5e+45) {
tmp = x + y;
} else {
tmp = z;
}
return tmp;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8) :: tmp
if (x <= (-5d+45)) then
tmp = x + y
else
tmp = z
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if (x <= -5e+45) {
tmp = x + y;
} else {
tmp = z;
}
return tmp;
}
def code(x, y, z): tmp = 0 if x <= -5e+45: tmp = x + y else: tmp = z return tmp
function code(x, y, z) tmp = 0.0 if (x <= -5e+45) tmp = Float64(x + y); else tmp = z; end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (x <= -5e+45) tmp = x + y; else tmp = z; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[x, -5e+45], N[(x + y), $MachinePrecision], z]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -5 \cdot 10^{+45}:\\
\;\;\;\;x + y\\
\mathbf{else}:\\
\;\;\;\;z\\
\end{array}
\end{array}
if x < -5e45Initial program 100.0%
Taylor expanded in z around 0 80.8%
+-commutative80.8%
Simplified80.8%
if -5e45 < x Initial program 100.0%
Taylor expanded in z around inf 44.1%
Final simplification51.2%
(FPCore (x y z) :precision binary64 (if (<= x -6.2e+47) x z))
double code(double x, double y, double z) {
double tmp;
if (x <= -6.2e+47) {
tmp = x;
} else {
tmp = z;
}
return tmp;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8) :: tmp
if (x <= (-6.2d+47)) then
tmp = x
else
tmp = z
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if (x <= -6.2e+47) {
tmp = x;
} else {
tmp = z;
}
return tmp;
}
def code(x, y, z): tmp = 0 if x <= -6.2e+47: tmp = x else: tmp = z return tmp
function code(x, y, z) tmp = 0.0 if (x <= -6.2e+47) tmp = x; else tmp = z; end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (x <= -6.2e+47) tmp = x; else tmp = z; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[x, -6.2e+47], x, z]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -6.2 \cdot 10^{+47}:\\
\;\;\;\;x\\
\mathbf{else}:\\
\;\;\;\;z\\
\end{array}
\end{array}
if x < -6.2000000000000001e47Initial program 100.0%
Taylor expanded in x around inf 71.2%
if -6.2000000000000001e47 < x Initial program 100.0%
Taylor expanded in z around inf 44.1%
(FPCore (x y z) :precision binary64 (+ x z))
double code(double x, double y, double z) {
return x + z;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
code = x + z
end function
public static double code(double x, double y, double z) {
return x + z;
}
def code(x, y, z): return x + z
function code(x, y, z) return Float64(x + z) end
function tmp = code(x, y, z) tmp = x + z; end
code[x_, y_, z_] := N[(x + z), $MachinePrecision]
\begin{array}{l}
\\
x + z
\end{array}
Initial program 100.0%
Taylor expanded in y around 0 70.4%
+-commutative70.4%
Simplified70.4%
Final simplification70.4%
(FPCore (x y z) :precision binary64 x)
double code(double x, double y, double z) {
return x;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
code = x
end function
public static double code(double x, double y, double z) {
return x;
}
def code(x, y, z): return x
function code(x, y, z) return x end
function tmp = code(x, y, z) tmp = x; end
code[x_, y_, z_] := x
\begin{array}{l}
\\
x
\end{array}
Initial program 100.0%
Taylor expanded in x around inf 33.1%
herbie shell --seed 2024163
(FPCore (x y z)
:name "Optimisation.CirclePacking:place from circle-packing-0.1.0.4, I"
:precision binary64
(+ (+ x y) z))