
(FPCore (x y) :precision binary64 (+ (+ (* x 2.0) (* x x)) (* y y)))
double code(double x, double y) {
return ((x * 2.0) + (x * x)) + (y * y);
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = ((x * 2.0d0) + (x * x)) + (y * y)
end function
public static double code(double x, double y) {
return ((x * 2.0) + (x * x)) + (y * y);
}
def code(x, y): return ((x * 2.0) + (x * x)) + (y * y)
function code(x, y) return Float64(Float64(Float64(x * 2.0) + Float64(x * x)) + Float64(y * y)) end
function tmp = code(x, y) tmp = ((x * 2.0) + (x * x)) + (y * y); end
code[x_, y_] := N[(N[(N[(x * 2.0), $MachinePrecision] + N[(x * x), $MachinePrecision]), $MachinePrecision] + N[(y * y), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(x \cdot 2 + x \cdot x\right) + y \cdot y
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 7 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y) :precision binary64 (+ (+ (* x 2.0) (* x x)) (* y y)))
double code(double x, double y) {
return ((x * 2.0) + (x * x)) + (y * y);
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = ((x * 2.0d0) + (x * x)) + (y * y)
end function
public static double code(double x, double y) {
return ((x * 2.0) + (x * x)) + (y * y);
}
def code(x, y): return ((x * 2.0) + (x * x)) + (y * y)
function code(x, y) return Float64(Float64(Float64(x * 2.0) + Float64(x * x)) + Float64(y * y)) end
function tmp = code(x, y) tmp = ((x * 2.0) + (x * x)) + (y * y); end
code[x_, y_] := N[(N[(N[(x * 2.0), $MachinePrecision] + N[(x * x), $MachinePrecision]), $MachinePrecision] + N[(y * y), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(x \cdot 2 + x \cdot x\right) + y \cdot y
\end{array}
(FPCore (x y) :precision binary64 (fma y y (* x (+ x 2.0))))
double code(double x, double y) {
return fma(y, y, (x * (x + 2.0)));
}
function code(x, y) return fma(y, y, Float64(x * Float64(x + 2.0))) end
code[x_, y_] := N[(y * y + N[(x * N[(x + 2.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\mathsf{fma}\left(y, y, x \cdot \left(x + 2\right)\right)
\end{array}
Initial program 100.0%
+-lowering-+.f64N/A
distribute-lft-outN/A
*-lowering-*.f64N/A
+-commutativeN/A
+-lowering-+.f64N/A
*-lowering-*.f64100.0%
Simplified100.0%
+-commutativeN/A
fma-defineN/A
fma-lowering-fma.f64N/A
*-lowering-*.f64N/A
+-lowering-+.f64100.0%
Applied egg-rr100.0%
(FPCore (x y) :precision binary64 (if (<= (* y y) 7.2e-199) (* x (+ x 2.0)) (+ (* y y) (* x x))))
double code(double x, double y) {
double tmp;
if ((y * y) <= 7.2e-199) {
tmp = x * (x + 2.0);
} else {
tmp = (y * y) + (x * x);
}
return tmp;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8) :: tmp
if ((y * y) <= 7.2d-199) then
tmp = x * (x + 2.0d0)
else
tmp = (y * y) + (x * x)
end if
code = tmp
end function
public static double code(double x, double y) {
double tmp;
if ((y * y) <= 7.2e-199) {
tmp = x * (x + 2.0);
} else {
tmp = (y * y) + (x * x);
}
return tmp;
}
def code(x, y): tmp = 0 if (y * y) <= 7.2e-199: tmp = x * (x + 2.0) else: tmp = (y * y) + (x * x) return tmp
function code(x, y) tmp = 0.0 if (Float64(y * y) <= 7.2e-199) tmp = Float64(x * Float64(x + 2.0)); else tmp = Float64(Float64(y * y) + Float64(x * x)); end return tmp end
function tmp_2 = code(x, y) tmp = 0.0; if ((y * y) <= 7.2e-199) tmp = x * (x + 2.0); else tmp = (y * y) + (x * x); end tmp_2 = tmp; end
code[x_, y_] := If[LessEqual[N[(y * y), $MachinePrecision], 7.2e-199], N[(x * N[(x + 2.0), $MachinePrecision]), $MachinePrecision], N[(N[(y * y), $MachinePrecision] + N[(x * x), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \cdot y \leq 7.2 \cdot 10^{-199}:\\
\;\;\;\;x \cdot \left(x + 2\right)\\
\mathbf{else}:\\
\;\;\;\;y \cdot y + x \cdot x\\
\end{array}
\end{array}
if (*.f64 y y) < 7.2000000000000003e-199Initial program 100.0%
+-lowering-+.f64N/A
distribute-lft-outN/A
*-lowering-*.f64N/A
+-commutativeN/A
+-lowering-+.f64N/A
*-lowering-*.f64100.0%
Simplified100.0%
Taylor expanded in x around inf
+-commutativeN/A
distribute-rgt-inN/A
associate-*l*N/A
*-lft-identityN/A
fma-defineN/A
unpow2N/A
associate-*r*N/A
lft-mult-inverseN/A
*-lft-identityN/A
fma-defineN/A
unpow2N/A
distribute-rgt-inN/A
*-lowering-*.f64N/A
+-lowering-+.f6497.4%
Simplified97.4%
if 7.2000000000000003e-199 < (*.f64 y y) Initial program 100.0%
+-lowering-+.f64N/A
distribute-lft-outN/A
*-lowering-*.f64N/A
+-commutativeN/A
+-lowering-+.f64N/A
*-lowering-*.f64100.0%
Simplified100.0%
Taylor expanded in x around inf
unpow2N/A
*-lowering-*.f6498.3%
Simplified98.3%
Final simplification98.0%
(FPCore (x y) :precision binary64 (if (<= x -3.1e+33) (* x x) (if (<= x 2.5e+74) (* y y) (* x x))))
double code(double x, double y) {
double tmp;
if (x <= -3.1e+33) {
tmp = x * x;
} else if (x <= 2.5e+74) {
tmp = y * y;
} else {
tmp = x * x;
}
return tmp;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8) :: tmp
if (x <= (-3.1d+33)) then
tmp = x * x
else if (x <= 2.5d+74) then
tmp = y * y
else
tmp = x * x
end if
code = tmp
end function
public static double code(double x, double y) {
double tmp;
if (x <= -3.1e+33) {
tmp = x * x;
} else if (x <= 2.5e+74) {
tmp = y * y;
} else {
tmp = x * x;
}
return tmp;
}
def code(x, y): tmp = 0 if x <= -3.1e+33: tmp = x * x elif x <= 2.5e+74: tmp = y * y else: tmp = x * x return tmp
function code(x, y) tmp = 0.0 if (x <= -3.1e+33) tmp = Float64(x * x); elseif (x <= 2.5e+74) tmp = Float64(y * y); else tmp = Float64(x * x); end return tmp end
function tmp_2 = code(x, y) tmp = 0.0; if (x <= -3.1e+33) tmp = x * x; elseif (x <= 2.5e+74) tmp = y * y; else tmp = x * x; end tmp_2 = tmp; end
code[x_, y_] := If[LessEqual[x, -3.1e+33], N[(x * x), $MachinePrecision], If[LessEqual[x, 2.5e+74], N[(y * y), $MachinePrecision], N[(x * x), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -3.1 \cdot 10^{+33}:\\
\;\;\;\;x \cdot x\\
\mathbf{elif}\;x \leq 2.5 \cdot 10^{+74}:\\
\;\;\;\;y \cdot y\\
\mathbf{else}:\\
\;\;\;\;x \cdot x\\
\end{array}
\end{array}
if x < -3.1e33 or 2.49999999999999982e74 < x Initial program 100.0%
+-lowering-+.f64N/A
distribute-lft-outN/A
*-lowering-*.f64N/A
+-commutativeN/A
+-lowering-+.f64N/A
*-lowering-*.f64100.0%
Simplified100.0%
Taylor expanded in x around inf
unpow2N/A
*-lowering-*.f6487.1%
Simplified87.1%
if -3.1e33 < x < 2.49999999999999982e74Initial program 100.0%
+-lowering-+.f64N/A
distribute-lft-outN/A
*-lowering-*.f64N/A
+-commutativeN/A
+-lowering-+.f64N/A
*-lowering-*.f64100.0%
Simplified100.0%
Taylor expanded in x around 0
unpow2N/A
*-lowering-*.f6468.6%
Simplified68.6%
(FPCore (x y) :precision binary64 (if (<= x -1.85e-9) (* x x) (if (<= x 2.0) (* x 2.0) (* x x))))
double code(double x, double y) {
double tmp;
if (x <= -1.85e-9) {
tmp = x * x;
} else if (x <= 2.0) {
tmp = x * 2.0;
} else {
tmp = x * x;
}
return tmp;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8) :: tmp
if (x <= (-1.85d-9)) then
tmp = x * x
else if (x <= 2.0d0) then
tmp = x * 2.0d0
else
tmp = x * x
end if
code = tmp
end function
public static double code(double x, double y) {
double tmp;
if (x <= -1.85e-9) {
tmp = x * x;
} else if (x <= 2.0) {
tmp = x * 2.0;
} else {
tmp = x * x;
}
return tmp;
}
def code(x, y): tmp = 0 if x <= -1.85e-9: tmp = x * x elif x <= 2.0: tmp = x * 2.0 else: tmp = x * x return tmp
function code(x, y) tmp = 0.0 if (x <= -1.85e-9) tmp = Float64(x * x); elseif (x <= 2.0) tmp = Float64(x * 2.0); else tmp = Float64(x * x); end return tmp end
function tmp_2 = code(x, y) tmp = 0.0; if (x <= -1.85e-9) tmp = x * x; elseif (x <= 2.0) tmp = x * 2.0; else tmp = x * x; end tmp_2 = tmp; end
code[x_, y_] := If[LessEqual[x, -1.85e-9], N[(x * x), $MachinePrecision], If[LessEqual[x, 2.0], N[(x * 2.0), $MachinePrecision], N[(x * x), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -1.85 \cdot 10^{-9}:\\
\;\;\;\;x \cdot x\\
\mathbf{elif}\;x \leq 2:\\
\;\;\;\;x \cdot 2\\
\mathbf{else}:\\
\;\;\;\;x \cdot x\\
\end{array}
\end{array}
if x < -1.85e-9 or 2 < x Initial program 100.0%
+-lowering-+.f64N/A
distribute-lft-outN/A
*-lowering-*.f64N/A
+-commutativeN/A
+-lowering-+.f64N/A
*-lowering-*.f64100.0%
Simplified100.0%
Taylor expanded in x around inf
unpow2N/A
*-lowering-*.f6475.9%
Simplified75.9%
if -1.85e-9 < x < 2Initial program 100.0%
+-lowering-+.f64N/A
distribute-lft-outN/A
*-lowering-*.f64N/A
+-commutativeN/A
+-lowering-+.f64N/A
*-lowering-*.f64100.0%
Simplified100.0%
Taylor expanded in x around inf
+-commutativeN/A
distribute-rgt-inN/A
associate-*l*N/A
*-lft-identityN/A
fma-defineN/A
unpow2N/A
associate-*r*N/A
lft-mult-inverseN/A
*-lft-identityN/A
fma-defineN/A
unpow2N/A
distribute-rgt-inN/A
*-lowering-*.f64N/A
+-lowering-+.f6433.8%
Simplified33.8%
Taylor expanded in x around 0
*-commutativeN/A
*-lowering-*.f6432.8%
Simplified32.8%
(FPCore (x y) :precision binary64 (if (<= (* y y) 6.5e-14) (* x (+ x 2.0)) (* y y)))
double code(double x, double y) {
double tmp;
if ((y * y) <= 6.5e-14) {
tmp = x * (x + 2.0);
} else {
tmp = y * y;
}
return tmp;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8) :: tmp
if ((y * y) <= 6.5d-14) then
tmp = x * (x + 2.0d0)
else
tmp = y * y
end if
code = tmp
end function
public static double code(double x, double y) {
double tmp;
if ((y * y) <= 6.5e-14) {
tmp = x * (x + 2.0);
} else {
tmp = y * y;
}
return tmp;
}
def code(x, y): tmp = 0 if (y * y) <= 6.5e-14: tmp = x * (x + 2.0) else: tmp = y * y return tmp
function code(x, y) tmp = 0.0 if (Float64(y * y) <= 6.5e-14) tmp = Float64(x * Float64(x + 2.0)); else tmp = Float64(y * y); end return tmp end
function tmp_2 = code(x, y) tmp = 0.0; if ((y * y) <= 6.5e-14) tmp = x * (x + 2.0); else tmp = y * y; end tmp_2 = tmp; end
code[x_, y_] := If[LessEqual[N[(y * y), $MachinePrecision], 6.5e-14], N[(x * N[(x + 2.0), $MachinePrecision]), $MachinePrecision], N[(y * y), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \cdot y \leq 6.5 \cdot 10^{-14}:\\
\;\;\;\;x \cdot \left(x + 2\right)\\
\mathbf{else}:\\
\;\;\;\;y \cdot y\\
\end{array}
\end{array}
if (*.f64 y y) < 6.5000000000000001e-14Initial program 100.0%
+-lowering-+.f64N/A
distribute-lft-outN/A
*-lowering-*.f64N/A
+-commutativeN/A
+-lowering-+.f64N/A
*-lowering-*.f64100.0%
Simplified100.0%
Taylor expanded in x around inf
+-commutativeN/A
distribute-rgt-inN/A
associate-*l*N/A
*-lft-identityN/A
fma-defineN/A
unpow2N/A
associate-*r*N/A
lft-mult-inverseN/A
*-lft-identityN/A
fma-defineN/A
unpow2N/A
distribute-rgt-inN/A
*-lowering-*.f64N/A
+-lowering-+.f6484.6%
Simplified84.6%
if 6.5000000000000001e-14 < (*.f64 y y) Initial program 100.0%
+-lowering-+.f64N/A
distribute-lft-outN/A
*-lowering-*.f64N/A
+-commutativeN/A
+-lowering-+.f64N/A
*-lowering-*.f64100.0%
Simplified100.0%
Taylor expanded in x around 0
unpow2N/A
*-lowering-*.f6484.2%
Simplified84.2%
Final simplification84.4%
(FPCore (x y) :precision binary64 (+ (* x (+ x 2.0)) (* y y)))
double code(double x, double y) {
return (x * (x + 2.0)) + (y * y);
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = (x * (x + 2.0d0)) + (y * y)
end function
public static double code(double x, double y) {
return (x * (x + 2.0)) + (y * y);
}
def code(x, y): return (x * (x + 2.0)) + (y * y)
function code(x, y) return Float64(Float64(x * Float64(x + 2.0)) + Float64(y * y)) end
function tmp = code(x, y) tmp = (x * (x + 2.0)) + (y * y); end
code[x_, y_] := N[(N[(x * N[(x + 2.0), $MachinePrecision]), $MachinePrecision] + N[(y * y), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x \cdot \left(x + 2\right) + y \cdot y
\end{array}
Initial program 100.0%
+-lowering-+.f64N/A
distribute-lft-outN/A
*-lowering-*.f64N/A
+-commutativeN/A
+-lowering-+.f64N/A
*-lowering-*.f64100.0%
Simplified100.0%
(FPCore (x y) :precision binary64 (* x 2.0))
double code(double x, double y) {
return x * 2.0;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = x * 2.0d0
end function
public static double code(double x, double y) {
return x * 2.0;
}
def code(x, y): return x * 2.0
function code(x, y) return Float64(x * 2.0) end
function tmp = code(x, y) tmp = x * 2.0; end
code[x_, y_] := N[(x * 2.0), $MachinePrecision]
\begin{array}{l}
\\
x \cdot 2
\end{array}
Initial program 100.0%
+-lowering-+.f64N/A
distribute-lft-outN/A
*-lowering-*.f64N/A
+-commutativeN/A
+-lowering-+.f64N/A
*-lowering-*.f64100.0%
Simplified100.0%
Taylor expanded in x around inf
+-commutativeN/A
distribute-rgt-inN/A
associate-*l*N/A
*-lft-identityN/A
fma-defineN/A
unpow2N/A
associate-*r*N/A
lft-mult-inverseN/A
*-lft-identityN/A
fma-defineN/A
unpow2N/A
distribute-rgt-inN/A
*-lowering-*.f64N/A
+-lowering-+.f6454.7%
Simplified54.7%
Taylor expanded in x around 0
*-commutativeN/A
*-lowering-*.f6418.6%
Simplified18.6%
(FPCore (x y) :precision binary64 (+ (* y y) (+ (* 2.0 x) (* x x))))
double code(double x, double y) {
return (y * y) + ((2.0 * x) + (x * x));
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = (y * y) + ((2.0d0 * x) + (x * x))
end function
public static double code(double x, double y) {
return (y * y) + ((2.0 * x) + (x * x));
}
def code(x, y): return (y * y) + ((2.0 * x) + (x * x))
function code(x, y) return Float64(Float64(y * y) + Float64(Float64(2.0 * x) + Float64(x * x))) end
function tmp = code(x, y) tmp = (y * y) + ((2.0 * x) + (x * x)); end
code[x_, y_] := N[(N[(y * y), $MachinePrecision] + N[(N[(2.0 * x), $MachinePrecision] + N[(x * x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
y \cdot y + \left(2 \cdot x + x \cdot x\right)
\end{array}
herbie shell --seed 2024158
(FPCore (x y)
:name "Numeric.Log:$clog1p from log-domain-0.10.2.1, A"
:precision binary64
:alt
(! :herbie-platform default (+ (* y y) (+ (* 2 x) (* x x))))
(+ (+ (* x 2.0) (* x x)) (* y y)))