
(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 6 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 (fma x 2.0 y))
double code(double x, double y) {
return fma(x, 2.0, y);
}
function code(x, y) return fma(x, 2.0, y) end
code[x_, y_] := N[(x * 2.0 + y), $MachinePrecision]
\begin{array}{l}
\\
\mathsf{fma}\left(x, 2, y\right)
\end{array}
Initial program 100.0%
Taylor expanded in x around 0
+-commutativeN/A
*-rgt-identityN/A
*-inversesN/A
associate-/l*N/A
associate-*l/N/A
associate-*r/N/A
associate-*r/N/A
*-commutativeN/A
associate-/l*N/A
associate-*l*N/A
accelerator-lowering-fma.f64N/A
associate-*l/N/A
*-rgt-identityN/A
*-inversesN/A
associate-/l*N/A
associate-/r/N/A
associate-*l/N/A
associate-*r*N/A
associate-/l*N/A
*-inversesN/A
metadata-eval100.0
Simplified100.0%
(FPCore (x y) :precision binary64 (if (<= y -5.5e+86) (+ x y) (if (<= y 1.35e+49) (+ x x) (+ x y))))
double code(double x, double y) {
double tmp;
if (y <= -5.5e+86) {
tmp = x + y;
} else if (y <= 1.35e+49) {
tmp = x + x;
} else {
tmp = x + y;
}
return tmp;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8) :: tmp
if (y <= (-5.5d+86)) then
tmp = x + y
else if (y <= 1.35d+49) then
tmp = x + x
else
tmp = x + y
end if
code = tmp
end function
public static double code(double x, double y) {
double tmp;
if (y <= -5.5e+86) {
tmp = x + y;
} else if (y <= 1.35e+49) {
tmp = x + x;
} else {
tmp = x + y;
}
return tmp;
}
def code(x, y): tmp = 0 if y <= -5.5e+86: tmp = x + y elif y <= 1.35e+49: tmp = x + x else: tmp = x + y return tmp
function code(x, y) tmp = 0.0 if (y <= -5.5e+86) tmp = Float64(x + y); elseif (y <= 1.35e+49) tmp = Float64(x + x); else tmp = Float64(x + y); end return tmp end
function tmp_2 = code(x, y) tmp = 0.0; if (y <= -5.5e+86) tmp = x + y; elseif (y <= 1.35e+49) tmp = x + x; else tmp = x + y; end tmp_2 = tmp; end
code[x_, y_] := If[LessEqual[y, -5.5e+86], N[(x + y), $MachinePrecision], If[LessEqual[y, 1.35e+49], N[(x + x), $MachinePrecision], N[(x + y), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -5.5 \cdot 10^{+86}:\\
\;\;\;\;x + y\\
\mathbf{elif}\;y \leq 1.35 \cdot 10^{+49}:\\
\;\;\;\;x + x\\
\mathbf{else}:\\
\;\;\;\;x + y\\
\end{array}
\end{array}
if y < -5.5000000000000002e86 or 1.35000000000000005e49 < y Initial program 100.0%
Taylor expanded in x around 0
Simplified82.5%
if -5.5000000000000002e86 < y < 1.35000000000000005e49Initial program 99.9%
Taylor expanded in x around inf
Simplified78.1%
Final simplification79.9%
(FPCore (x y) :precision binary64 (if (<= y -5.5e+86) y (if (<= y 1.55e+48) (+ x x) y)))
double code(double x, double y) {
double tmp;
if (y <= -5.5e+86) {
tmp = y;
} else if (y <= 1.55e+48) {
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 (y <= (-5.5d+86)) then
tmp = y
else if (y <= 1.55d+48) then
tmp = x + x
else
tmp = y
end if
code = tmp
end function
public static double code(double x, double y) {
double tmp;
if (y <= -5.5e+86) {
tmp = y;
} else if (y <= 1.55e+48) {
tmp = x + x;
} else {
tmp = y;
}
return tmp;
}
def code(x, y): tmp = 0 if y <= -5.5e+86: tmp = y elif y <= 1.55e+48: tmp = x + x else: tmp = y return tmp
function code(x, y) tmp = 0.0 if (y <= -5.5e+86) tmp = y; elseif (y <= 1.55e+48) tmp = Float64(x + x); else tmp = y; end return tmp end
function tmp_2 = code(x, y) tmp = 0.0; if (y <= -5.5e+86) tmp = y; elseif (y <= 1.55e+48) tmp = x + x; else tmp = y; end tmp_2 = tmp; end
code[x_, y_] := If[LessEqual[y, -5.5e+86], y, If[LessEqual[y, 1.55e+48], N[(x + x), $MachinePrecision], y]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -5.5 \cdot 10^{+86}:\\
\;\;\;\;y\\
\mathbf{elif}\;y \leq 1.55 \cdot 10^{+48}:\\
\;\;\;\;x + x\\
\mathbf{else}:\\
\;\;\;\;y\\
\end{array}
\end{array}
if y < -5.5000000000000002e86 or 1.55000000000000003e48 < y Initial program 100.0%
Taylor expanded in x around 0
Simplified79.6%
if -5.5000000000000002e86 < y < 1.55000000000000003e48Initial program 99.9%
Taylor expanded in x around inf
Simplified78.1%
(FPCore (x y) :precision binary64 (if (<= x 1.42e+194) y x))
double code(double x, double y) {
double tmp;
if (x <= 1.42e+194) {
tmp = y;
} else {
tmp = x;
}
return tmp;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8) :: tmp
if (x <= 1.42d+194) then
tmp = y
else
tmp = x
end if
code = tmp
end function
public static double code(double x, double y) {
double tmp;
if (x <= 1.42e+194) {
tmp = y;
} else {
tmp = x;
}
return tmp;
}
def code(x, y): tmp = 0 if x <= 1.42e+194: tmp = y else: tmp = x return tmp
function code(x, y) tmp = 0.0 if (x <= 1.42e+194) tmp = y; else tmp = x; end return tmp end
function tmp_2 = code(x, y) tmp = 0.0; if (x <= 1.42e+194) tmp = y; else tmp = x; end tmp_2 = tmp; end
code[x_, y_] := If[LessEqual[x, 1.42e+194], y, x]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq 1.42 \cdot 10^{+194}:\\
\;\;\;\;y\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
if x < 1.4199999999999999e194Initial program 100.0%
Taylor expanded in x around 0
Simplified52.9%
if 1.4199999999999999e194 < x Initial program 100.0%
Taylor expanded in x around 0
Simplified20.8%
Taylor expanded in y around 0
Simplified17.8%
(FPCore (x y) :precision binary64 (+ x (+ x y)))
double code(double x, double y) {
return x + (x + y);
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = x + (x + y)
end function
public static double code(double x, double y) {
return x + (x + y);
}
def code(x, y): return x + (x + y)
function code(x, y) return Float64(x + Float64(x + y)) end
function tmp = code(x, y) tmp = x + (x + y); end
code[x_, y_] := N[(x + N[(x + y), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x + \left(x + y\right)
\end{array}
Initial program 100.0%
Final simplification100.0%
(FPCore (x y) :precision binary64 x)
double code(double x, double y) {
return x;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = x
end function
public static double code(double x, double y) {
return x;
}
def code(x, y): return x
function code(x, y) return x end
function tmp = code(x, y) tmp = x; end
code[x_, y_] := x
\begin{array}{l}
\\
x
\end{array}
Initial program 100.0%
Taylor expanded in x around 0
Simplified54.2%
Taylor expanded in y around 0
Simplified11.8%
(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 2024195
(FPCore (x y)
:name "Graphics.Rendering.Plot.Render.Plot.Legend:renderLegendOutside from plot-0.2.3.4, A"
:precision binary64
:alt
(! :herbie-platform default (+ y (* 2 x)))
(+ (+ x y) x))