
(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 (+ z (+ x y)))
double code(double x, double y, double z) {
return z + (x + y);
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
code = z + (x + y)
end function
public static double code(double x, double y, double z) {
return z + (x + y);
}
def code(x, y, z): return z + (x + y)
function code(x, y, z) return Float64(z + Float64(x + y)) end
function tmp = code(x, y, z) tmp = z + (x + y); end
code[x_, y_, z_] := N[(z + N[(x + y), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
z + \left(x + y\right)
\end{array}
Initial program 100.0%
Final simplification100.0%
(FPCore (x y z) :precision binary64 (if (<= x -2.1e-19) (+ x y) (+ y z)))
double code(double x, double y, double z) {
double tmp;
if (x <= -2.1e-19) {
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 <= (-2.1d-19)) 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 <= -2.1e-19) {
tmp = x + y;
} else {
tmp = y + z;
}
return tmp;
}
def code(x, y, z): tmp = 0 if x <= -2.1e-19: tmp = x + y else: tmp = y + z return tmp
function code(x, y, z) tmp = 0.0 if (x <= -2.1e-19) 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 <= -2.1e-19) tmp = x + y; else tmp = y + z; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[x, -2.1e-19], N[(x + y), $MachinePrecision], N[(y + z), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -2.1 \cdot 10^{-19}:\\
\;\;\;\;x + y\\
\mathbf{else}:\\
\;\;\;\;y + z\\
\end{array}
\end{array}
if x < -2.0999999999999999e-19Initial program 100.0%
Taylor expanded in z around 0
+-commutativeN/A
+-lowering-+.f6481.2%
Simplified81.2%
if -2.0999999999999999e-19 < x Initial program 100.0%
Taylor expanded in x around 0
+-lowering-+.f6472.1%
Simplified72.1%
Final simplification74.9%
(FPCore (x y z) :precision binary64 (if (<= z 2.6e+74) (+ x y) z))
double code(double x, double y, double z) {
double tmp;
if (z <= 2.6e+74) {
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 (z <= 2.6d+74) 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 (z <= 2.6e+74) {
tmp = x + y;
} else {
tmp = z;
}
return tmp;
}
def code(x, y, z): tmp = 0 if z <= 2.6e+74: tmp = x + y else: tmp = z return tmp
function code(x, y, z) tmp = 0.0 if (z <= 2.6e+74) tmp = Float64(x + y); else tmp = z; end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (z <= 2.6e+74) tmp = x + y; else tmp = z; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[z, 2.6e+74], N[(x + y), $MachinePrecision], z]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq 2.6 \cdot 10^{+74}:\\
\;\;\;\;x + y\\
\mathbf{else}:\\
\;\;\;\;z\\
\end{array}
\end{array}
if z < 2.6000000000000001e74Initial program 100.0%
Taylor expanded in z around 0
+-commutativeN/A
+-lowering-+.f6476.1%
Simplified76.1%
if 2.6000000000000001e74 < z Initial program 100.0%
Taylor expanded in z around inf
Simplified68.6%
Final simplification75.1%
(FPCore (x y z) :precision binary64 (if (<= x -2.1e-19) x z))
double code(double x, double y, double z) {
double tmp;
if (x <= -2.1e-19) {
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 <= (-2.1d-19)) 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 <= -2.1e-19) {
tmp = x;
} else {
tmp = z;
}
return tmp;
}
def code(x, y, z): tmp = 0 if x <= -2.1e-19: tmp = x else: tmp = z return tmp
function code(x, y, z) tmp = 0.0 if (x <= -2.1e-19) tmp = x; else tmp = z; end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (x <= -2.1e-19) tmp = x; else tmp = z; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[x, -2.1e-19], x, z]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -2.1 \cdot 10^{-19}:\\
\;\;\;\;x\\
\mathbf{else}:\\
\;\;\;\;z\\
\end{array}
\end{array}
if x < -2.0999999999999999e-19Initial program 100.0%
Taylor expanded in x around inf
Simplified63.0%
if -2.0999999999999999e-19 < x Initial program 100.0%
Taylor expanded in z around inf
Simplified36.4%
(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
+-commutativeN/A
+-lowering-+.f6469.2%
Simplified69.2%
Final simplification69.2%
(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
Simplified39.7%
herbie shell --seed 2024138
(FPCore (x y z)
:name "Optimisation.CirclePacking:place from circle-packing-0.1.0.4, I"
:precision binary64
(+ (+ x y) z))