
(FPCore (x y) :precision binary64 (+ (+ x y) x))
double code(double x, double y) {
return (x + y) + x;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = (x + y) + x
end function
public static double code(double x, double y) {
return (x + y) + x;
}
def code(x, y): return (x + y) + x
function code(x, y) return Float64(Float64(x + y) + x) end
function tmp = code(x, y) tmp = (x + y) + x; end
code[x_, y_] := N[(N[(x + y), $MachinePrecision] + x), $MachinePrecision]
\begin{array}{l}
\\
\left(x + y\right) + x
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 3 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y) :precision binary64 (+ (+ x y) x))
double code(double x, double y) {
return (x + y) + x;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = (x + y) + x
end function
public static double code(double x, double y) {
return (x + y) + x;
}
def code(x, y): return (x + y) + x
function code(x, y) return Float64(Float64(x + y) + x) end
function tmp = code(x, y) tmp = (x + y) + x; end
code[x_, y_] := N[(N[(x + y), $MachinePrecision] + x), $MachinePrecision]
\begin{array}{l}
\\
\left(x + y\right) + x
\end{array}
(FPCore (x y) :precision binary64 (+ (* 2.0 x) y))
double code(double x, double y) {
return (2.0 * x) + y;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = (2.0d0 * x) + y
end function
public static double code(double x, double y) {
return (2.0 * x) + y;
}
def code(x, y): return (2.0 * x) + y
function code(x, y) return Float64(Float64(2.0 * x) + y) end
function tmp = code(x, y) tmp = (2.0 * x) + y; end
code[x_, y_] := N[(N[(2.0 * x), $MachinePrecision] + y), $MachinePrecision]
\begin{array}{l}
\\
2 \cdot x + y
\end{array}
Initial program 100.0%
Taylor expanded in x around 0 100.0%
Final simplification100.0%
(FPCore (x y) :precision binary64 (if (or (<= x -12.5) (not (<= x 4.3e+58))) (+ x x) y))
double code(double x, double y) {
double tmp;
if ((x <= -12.5) || !(x <= 4.3e+58)) {
tmp = x + x;
} else {
tmp = y;
}
return tmp;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8) :: tmp
if ((x <= (-12.5d0)) .or. (.not. (x <= 4.3d+58))) then
tmp = x + x
else
tmp = y
end if
code = tmp
end function
public static double code(double x, double y) {
double tmp;
if ((x <= -12.5) || !(x <= 4.3e+58)) {
tmp = x + x;
} else {
tmp = y;
}
return tmp;
}
def code(x, y): tmp = 0 if (x <= -12.5) or not (x <= 4.3e+58): tmp = x + x else: tmp = y return tmp
function code(x, y) tmp = 0.0 if ((x <= -12.5) || !(x <= 4.3e+58)) tmp = Float64(x + x); else tmp = y; end return tmp end
function tmp_2 = code(x, y) tmp = 0.0; if ((x <= -12.5) || ~((x <= 4.3e+58))) tmp = x + x; else tmp = y; end tmp_2 = tmp; end
code[x_, y_] := If[Or[LessEqual[x, -12.5], N[Not[LessEqual[x, 4.3e+58]], $MachinePrecision]], N[(x + x), $MachinePrecision], y]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -12.5 \lor \neg \left(x \leq 4.3 \cdot 10^{+58}\right):\\
\;\;\;\;x + x\\
\mathbf{else}:\\
\;\;\;\;y\\
\end{array}
\end{array}
if x < -12.5 or 4.29999999999999991e58 < x Initial program 100.0%
Taylor expanded in x around inf 78.4%
count-278.4%
Simplified78.4%
if -12.5 < x < 4.29999999999999991e58Initial program 100.0%
Taylor expanded in x around 0 80.5%
Final simplification79.6%
(FPCore (x y) :precision binary64 y)
double code(double x, double y) {
return y;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = y
end function
public static double code(double x, double y) {
return y;
}
def code(x, y): return y
function code(x, y) return y end
function tmp = code(x, y) tmp = y; end
code[x_, y_] := y
\begin{array}{l}
\\
y
\end{array}
Initial program 100.0%
Taylor expanded in x around 0 55.0%
Final simplification55.0%
(FPCore (x y) :precision binary64 (+ y (* 2.0 x)))
double code(double x, double y) {
return y + (2.0 * x);
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = y + (2.0d0 * x)
end function
public static double code(double x, double y) {
return y + (2.0 * x);
}
def code(x, y): return y + (2.0 * x)
function code(x, y) return Float64(y + Float64(2.0 * x)) end
function tmp = code(x, y) tmp = y + (2.0 * x); end
code[x_, y_] := N[(y + N[(2.0 * x), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
y + 2 \cdot x
\end{array}
herbie shell --seed 2023240
(FPCore (x y)
:name "Graphics.Rendering.Plot.Render.Plot.Legend:renderLegendOutside from plot-0.2.3.4, A"
:precision binary64
:herbie-target
(+ y (* 2.0 x))
(+ (+ x y) x))