
(FPCore (x y z) :precision binary64 (+ x (* y (+ z x))))
double code(double x, double y, double z) {
return x + (y * (z + 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 + (y * (z + x))
end function
public static double code(double x, double y, double z) {
return x + (y * (z + x));
}
def code(x, y, z): return x + (y * (z + x))
function code(x, y, z) return Float64(x + Float64(y * Float64(z + x))) end
function tmp = code(x, y, z) tmp = x + (y * (z + x)); end
code[x_, y_, z_] := N[(x + N[(y * N[(z + x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x + y \cdot \left(z + x\right)
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 7 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y z) :precision binary64 (+ x (* y (+ z x))))
double code(double x, double y, double z) {
return x + (y * (z + 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 + (y * (z + x))
end function
public static double code(double x, double y, double z) {
return x + (y * (z + x));
}
def code(x, y, z): return x + (y * (z + x))
function code(x, y, z) return Float64(x + Float64(y * Float64(z + x))) end
function tmp = code(x, y, z) tmp = x + (y * (z + x)); end
code[x_, y_, z_] := N[(x + N[(y * N[(z + x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x + y \cdot \left(z + x\right)
\end{array}
(FPCore (x y z) :precision binary64 (+ x (* y (+ x z))))
double code(double x, double y, double z) {
return x + (y * (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 + (y * (x + z))
end function
public static double code(double x, double y, double z) {
return x + (y * (x + z));
}
def code(x, y, z): return x + (y * (x + z))
function code(x, y, z) return Float64(x + Float64(y * Float64(x + z))) end
function tmp = code(x, y, z) tmp = x + (y * (x + z)); end
code[x_, y_, z_] := N[(x + N[(y * N[(x + z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x + y \cdot \left(x + z\right)
\end{array}
Initial program 100.0%
Final simplification100.0%
(FPCore (x y z)
:precision binary64
(if (<= y -5.6e+194)
(* x y)
(if (<= y -1.4e-57)
(* y z)
(if (<= y 3.4e-17) x (if (<= y 9e+292) (* y z) (* x y))))))
double code(double x, double y, double z) {
double tmp;
if (y <= -5.6e+194) {
tmp = x * y;
} else if (y <= -1.4e-57) {
tmp = y * z;
} else if (y <= 3.4e-17) {
tmp = x;
} else if (y <= 9e+292) {
tmp = y * z;
} else {
tmp = x * y;
}
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 (y <= (-5.6d+194)) then
tmp = x * y
else if (y <= (-1.4d-57)) then
tmp = y * z
else if (y <= 3.4d-17) then
tmp = x
else if (y <= 9d+292) then
tmp = y * z
else
tmp = x * y
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if (y <= -5.6e+194) {
tmp = x * y;
} else if (y <= -1.4e-57) {
tmp = y * z;
} else if (y <= 3.4e-17) {
tmp = x;
} else if (y <= 9e+292) {
tmp = y * z;
} else {
tmp = x * y;
}
return tmp;
}
def code(x, y, z): tmp = 0 if y <= -5.6e+194: tmp = x * y elif y <= -1.4e-57: tmp = y * z elif y <= 3.4e-17: tmp = x elif y <= 9e+292: tmp = y * z else: tmp = x * y return tmp
function code(x, y, z) tmp = 0.0 if (y <= -5.6e+194) tmp = Float64(x * y); elseif (y <= -1.4e-57) tmp = Float64(y * z); elseif (y <= 3.4e-17) tmp = x; elseif (y <= 9e+292) tmp = Float64(y * z); else tmp = Float64(x * y); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (y <= -5.6e+194) tmp = x * y; elseif (y <= -1.4e-57) tmp = y * z; elseif (y <= 3.4e-17) tmp = x; elseif (y <= 9e+292) tmp = y * z; else tmp = x * y; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[y, -5.6e+194], N[(x * y), $MachinePrecision], If[LessEqual[y, -1.4e-57], N[(y * z), $MachinePrecision], If[LessEqual[y, 3.4e-17], x, If[LessEqual[y, 9e+292], N[(y * z), $MachinePrecision], N[(x * y), $MachinePrecision]]]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -5.6 \cdot 10^{+194}:\\
\;\;\;\;x \cdot y\\
\mathbf{elif}\;y \leq -1.4 \cdot 10^{-57}:\\
\;\;\;\;y \cdot z\\
\mathbf{elif}\;y \leq 3.4 \cdot 10^{-17}:\\
\;\;\;\;x\\
\mathbf{elif}\;y \leq 9 \cdot 10^{+292}:\\
\;\;\;\;y \cdot z\\
\mathbf{else}:\\
\;\;\;\;x \cdot y\\
\end{array}
\end{array}
if y < -5.60000000000000021e194 or 8.99999999999999968e292 < y Initial program 100.0%
Taylor expanded in x around 0 92.3%
Taylor expanded in y around inf 100.0%
Taylor expanded in x around inf 71.5%
*-commutative71.5%
Simplified71.5%
if -5.60000000000000021e194 < y < -1.4e-57 or 3.3999999999999998e-17 < y < 8.99999999999999968e292Initial program 100.0%
Taylor expanded in z around inf 64.9%
Taylor expanded in x around 0 58.8%
if -1.4e-57 < y < 3.3999999999999998e-17Initial program 100.0%
Taylor expanded in y around 0 73.7%
Final simplification66.0%
(FPCore (x y z) :precision binary64 (if (or (<= y -1.0) (not (<= y 1.0))) (* y (+ x z)) (+ x (* y z))))
double code(double x, double y, double z) {
double tmp;
if ((y <= -1.0) || !(y <= 1.0)) {
tmp = y * (x + z);
} else {
tmp = x + (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 ((y <= (-1.0d0)) .or. (.not. (y <= 1.0d0))) then
tmp = y * (x + z)
else
tmp = x + (y * z)
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if ((y <= -1.0) || !(y <= 1.0)) {
tmp = y * (x + z);
} else {
tmp = x + (y * z);
}
return tmp;
}
def code(x, y, z): tmp = 0 if (y <= -1.0) or not (y <= 1.0): tmp = y * (x + z) else: tmp = x + (y * z) return tmp
function code(x, y, z) tmp = 0.0 if ((y <= -1.0) || !(y <= 1.0)) tmp = Float64(y * Float64(x + z)); else tmp = Float64(x + Float64(y * z)); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((y <= -1.0) || ~((y <= 1.0))) tmp = y * (x + z); else tmp = x + (y * z); end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[y, -1.0], N[Not[LessEqual[y, 1.0]], $MachinePrecision]], N[(y * N[(x + z), $MachinePrecision]), $MachinePrecision], N[(x + N[(y * z), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -1 \lor \neg \left(y \leq 1\right):\\
\;\;\;\;y \cdot \left(x + z\right)\\
\mathbf{else}:\\
\;\;\;\;x + y \cdot z\\
\end{array}
\end{array}
if y < -1 or 1 < y Initial program 100.0%
Taylor expanded in x around 0 95.3%
Taylor expanded in y around inf 99.3%
if -1 < y < 1Initial program 100.0%
Taylor expanded in z around inf 96.7%
Final simplification98.0%
(FPCore (x y z) :precision binary64 (if (or (<= y -160.0) (not (<= y 2e-15))) (* y (+ x z)) (+ x (* x y))))
double code(double x, double y, double z) {
double tmp;
if ((y <= -160.0) || !(y <= 2e-15)) {
tmp = y * (x + z);
} else {
tmp = x + (x * y);
}
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 ((y <= (-160.0d0)) .or. (.not. (y <= 2d-15))) then
tmp = y * (x + z)
else
tmp = x + (x * y)
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if ((y <= -160.0) || !(y <= 2e-15)) {
tmp = y * (x + z);
} else {
tmp = x + (x * y);
}
return tmp;
}
def code(x, y, z): tmp = 0 if (y <= -160.0) or not (y <= 2e-15): tmp = y * (x + z) else: tmp = x + (x * y) return tmp
function code(x, y, z) tmp = 0.0 if ((y <= -160.0) || !(y <= 2e-15)) tmp = Float64(y * Float64(x + z)); else tmp = Float64(x + Float64(x * y)); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((y <= -160.0) || ~((y <= 2e-15))) tmp = y * (x + z); else tmp = x + (x * y); end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[y, -160.0], N[Not[LessEqual[y, 2e-15]], $MachinePrecision]], N[(y * N[(x + z), $MachinePrecision]), $MachinePrecision], N[(x + N[(x * y), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -160 \lor \neg \left(y \leq 2 \cdot 10^{-15}\right):\\
\;\;\;\;y \cdot \left(x + z\right)\\
\mathbf{else}:\\
\;\;\;\;x + x \cdot y\\
\end{array}
\end{array}
if y < -160 or 2.0000000000000002e-15 < y Initial program 100.0%
Taylor expanded in x around 0 95.5%
Taylor expanded in y around inf 98.6%
if -160 < y < 2.0000000000000002e-15Initial program 100.0%
Taylor expanded in z around 0 70.3%
*-commutative70.3%
Simplified70.3%
Final simplification85.0%
(FPCore (x y z) :precision binary64 (if (or (<= y -1.22e-57) (not (<= y 1.52e-15))) (* y (+ x z)) x))
double code(double x, double y, double z) {
double tmp;
if ((y <= -1.22e-57) || !(y <= 1.52e-15)) {
tmp = y * (x + z);
} else {
tmp = x;
}
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 ((y <= (-1.22d-57)) .or. (.not. (y <= 1.52d-15))) then
tmp = y * (x + z)
else
tmp = x
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if ((y <= -1.22e-57) || !(y <= 1.52e-15)) {
tmp = y * (x + z);
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (y <= -1.22e-57) or not (y <= 1.52e-15): tmp = y * (x + z) else: tmp = x return tmp
function code(x, y, z) tmp = 0.0 if ((y <= -1.22e-57) || !(y <= 1.52e-15)) tmp = Float64(y * Float64(x + z)); else tmp = x; end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((y <= -1.22e-57) || ~((y <= 1.52e-15))) tmp = y * (x + z); else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[y, -1.22e-57], N[Not[LessEqual[y, 1.52e-15]], $MachinePrecision]], N[(y * N[(x + z), $MachinePrecision]), $MachinePrecision], x]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -1.22 \cdot 10^{-57} \lor \neg \left(y \leq 1.52 \cdot 10^{-15}\right):\\
\;\;\;\;y \cdot \left(x + z\right)\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
if y < -1.2200000000000001e-57 or 1.52000000000000005e-15 < y Initial program 100.0%
Taylor expanded in x around 0 96.1%
Taylor expanded in y around inf 91.9%
if -1.2200000000000001e-57 < y < 1.52000000000000005e-15Initial program 100.0%
Taylor expanded in y around 0 73.7%
Final simplification84.6%
(FPCore (x y z) :precision binary64 (if (or (<= y -1.0) (not (<= y 620000000000.0))) (* x y) x))
double code(double x, double y, double z) {
double tmp;
if ((y <= -1.0) || !(y <= 620000000000.0)) {
tmp = x * y;
} else {
tmp = x;
}
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 ((y <= (-1.0d0)) .or. (.not. (y <= 620000000000.0d0))) then
tmp = x * y
else
tmp = x
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if ((y <= -1.0) || !(y <= 620000000000.0)) {
tmp = x * y;
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (y <= -1.0) or not (y <= 620000000000.0): tmp = x * y else: tmp = x return tmp
function code(x, y, z) tmp = 0.0 if ((y <= -1.0) || !(y <= 620000000000.0)) tmp = Float64(x * y); else tmp = x; end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((y <= -1.0) || ~((y <= 620000000000.0))) tmp = x * y; else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[y, -1.0], N[Not[LessEqual[y, 620000000000.0]], $MachinePrecision]], N[(x * y), $MachinePrecision], x]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -1 \lor \neg \left(y \leq 620000000000\right):\\
\;\;\;\;x \cdot y\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
if y < -1 or 6.2e11 < y Initial program 100.0%
Taylor expanded in x around 0 95.3%
Taylor expanded in y around inf 99.3%
Taylor expanded in x around inf 50.1%
*-commutative50.1%
Simplified50.1%
if -1 < y < 6.2e11Initial program 100.0%
Taylor expanded in y around 0 65.2%
Final simplification57.7%
(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 y around 0 33.9%
herbie shell --seed 2024137
(FPCore (x y z)
:name "Main:bigenough2 from A"
:precision binary64
(+ x (* y (+ z x))))