
(FPCore (x y) :precision binary64 (/ (+ x y) (+ y 1.0)))
double code(double x, double y) {
return (x + y) / (y + 1.0);
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = (x + y) / (y + 1.0d0)
end function
public static double code(double x, double y) {
return (x + y) / (y + 1.0);
}
def code(x, y): return (x + y) / (y + 1.0)
function code(x, y) return Float64(Float64(x + y) / Float64(y + 1.0)) end
function tmp = code(x, y) tmp = (x + y) / (y + 1.0); end
code[x_, y_] := N[(N[(x + y), $MachinePrecision] / N[(y + 1.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{x + y}{y + 1}
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 7 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y) :precision binary64 (/ (+ x y) (+ y 1.0)))
double code(double x, double y) {
return (x + y) / (y + 1.0);
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = (x + y) / (y + 1.0d0)
end function
public static double code(double x, double y) {
return (x + y) / (y + 1.0);
}
def code(x, y): return (x + y) / (y + 1.0)
function code(x, y) return Float64(Float64(x + y) / Float64(y + 1.0)) end
function tmp = code(x, y) tmp = (x + y) / (y + 1.0); end
code[x_, y_] := N[(N[(x + y), $MachinePrecision] / N[(y + 1.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{x + y}{y + 1}
\end{array}
(FPCore (x y) :precision binary64 (/ (+ x y) (+ y 1.0)))
double code(double x, double y) {
return (x + y) / (y + 1.0);
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = (x + y) / (y + 1.0d0)
end function
public static double code(double x, double y) {
return (x + y) / (y + 1.0);
}
def code(x, y): return (x + y) / (y + 1.0)
function code(x, y) return Float64(Float64(x + y) / Float64(y + 1.0)) end
function tmp = code(x, y) tmp = (x + y) / (y + 1.0); end
code[x_, y_] := N[(N[(x + y), $MachinePrecision] / N[(y + 1.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{x + y}{y + 1}
\end{array}
Initial program 100.0%
Final simplification100.0%
(FPCore (x y) :precision binary64 (if (or (<= y -1850000.0) (not (<= y 26000000000000.0))) (+ 1.0 (/ (+ x -1.0) y)) (/ x (+ y 1.0))))
double code(double x, double y) {
double tmp;
if ((y <= -1850000.0) || !(y <= 26000000000000.0)) {
tmp = 1.0 + ((x + -1.0) / y);
} else {
tmp = x / (y + 1.0);
}
return tmp;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8) :: tmp
if ((y <= (-1850000.0d0)) .or. (.not. (y <= 26000000000000.0d0))) then
tmp = 1.0d0 + ((x + (-1.0d0)) / y)
else
tmp = x / (y + 1.0d0)
end if
code = tmp
end function
public static double code(double x, double y) {
double tmp;
if ((y <= -1850000.0) || !(y <= 26000000000000.0)) {
tmp = 1.0 + ((x + -1.0) / y);
} else {
tmp = x / (y + 1.0);
}
return tmp;
}
def code(x, y): tmp = 0 if (y <= -1850000.0) or not (y <= 26000000000000.0): tmp = 1.0 + ((x + -1.0) / y) else: tmp = x / (y + 1.0) return tmp
function code(x, y) tmp = 0.0 if ((y <= -1850000.0) || !(y <= 26000000000000.0)) tmp = Float64(1.0 + Float64(Float64(x + -1.0) / y)); else tmp = Float64(x / Float64(y + 1.0)); end return tmp end
function tmp_2 = code(x, y) tmp = 0.0; if ((y <= -1850000.0) || ~((y <= 26000000000000.0))) tmp = 1.0 + ((x + -1.0) / y); else tmp = x / (y + 1.0); end tmp_2 = tmp; end
code[x_, y_] := If[Or[LessEqual[y, -1850000.0], N[Not[LessEqual[y, 26000000000000.0]], $MachinePrecision]], N[(1.0 + N[(N[(x + -1.0), $MachinePrecision] / y), $MachinePrecision]), $MachinePrecision], N[(x / N[(y + 1.0), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -1850000 \lor \neg \left(y \leq 26000000000000\right):\\
\;\;\;\;1 + \frac{x + -1}{y}\\
\mathbf{else}:\\
\;\;\;\;\frac{x}{y + 1}\\
\end{array}
\end{array}
if y < -1.85e6 or 2.6e13 < y Initial program 100.0%
Taylor expanded in y around inf 100.0%
associate--l+100.0%
div-sub100.0%
sub-neg100.0%
metadata-eval100.0%
Simplified100.0%
if -1.85e6 < y < 2.6e13Initial program 100.0%
Taylor expanded in x around inf 78.3%
+-commutative78.3%
Simplified78.3%
Final simplification88.7%
(FPCore (x y) :precision binary64 (if (or (<= y -1.0) (not (<= y 1.0))) (+ 1.0 (/ (+ x -1.0) y)) (+ x (* y (- 1.0 x)))))
double code(double x, double y) {
double tmp;
if ((y <= -1.0) || !(y <= 1.0)) {
tmp = 1.0 + ((x + -1.0) / y);
} else {
tmp = x + (y * (1.0 - x));
}
return tmp;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8) :: tmp
if ((y <= (-1.0d0)) .or. (.not. (y <= 1.0d0))) then
tmp = 1.0d0 + ((x + (-1.0d0)) / y)
else
tmp = x + (y * (1.0d0 - x))
end if
code = tmp
end function
public static double code(double x, double y) {
double tmp;
if ((y <= -1.0) || !(y <= 1.0)) {
tmp = 1.0 + ((x + -1.0) / y);
} else {
tmp = x + (y * (1.0 - x));
}
return tmp;
}
def code(x, y): tmp = 0 if (y <= -1.0) or not (y <= 1.0): tmp = 1.0 + ((x + -1.0) / y) else: tmp = x + (y * (1.0 - x)) return tmp
function code(x, y) tmp = 0.0 if ((y <= -1.0) || !(y <= 1.0)) tmp = Float64(1.0 + Float64(Float64(x + -1.0) / y)); else tmp = Float64(x + Float64(y * Float64(1.0 - x))); end return tmp end
function tmp_2 = code(x, y) tmp = 0.0; if ((y <= -1.0) || ~((y <= 1.0))) tmp = 1.0 + ((x + -1.0) / y); else tmp = x + (y * (1.0 - x)); end tmp_2 = tmp; end
code[x_, y_] := If[Or[LessEqual[y, -1.0], N[Not[LessEqual[y, 1.0]], $MachinePrecision]], N[(1.0 + N[(N[(x + -1.0), $MachinePrecision] / y), $MachinePrecision]), $MachinePrecision], N[(x + N[(y * N[(1.0 - x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -1 \lor \neg \left(y \leq 1\right):\\
\;\;\;\;1 + \frac{x + -1}{y}\\
\mathbf{else}:\\
\;\;\;\;x + y \cdot \left(1 - x\right)\\
\end{array}
\end{array}
if y < -1 or 1 < y Initial program 100.0%
Taylor expanded in y around inf 99.4%
associate--l+99.4%
div-sub99.4%
sub-neg99.4%
metadata-eval99.4%
Simplified99.4%
if -1 < y < 1Initial program 100.0%
Taylor expanded in y around 0 99.0%
Final simplification99.2%
(FPCore (x y) :precision binary64 (if (or (<= y -2.4e-28) (not (<= y 1.6e+63))) (/ y (+ y 1.0)) (/ x (+ y 1.0))))
double code(double x, double y) {
double tmp;
if ((y <= -2.4e-28) || !(y <= 1.6e+63)) {
tmp = y / (y + 1.0);
} else {
tmp = x / (y + 1.0);
}
return tmp;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8) :: tmp
if ((y <= (-2.4d-28)) .or. (.not. (y <= 1.6d+63))) then
tmp = y / (y + 1.0d0)
else
tmp = x / (y + 1.0d0)
end if
code = tmp
end function
public static double code(double x, double y) {
double tmp;
if ((y <= -2.4e-28) || !(y <= 1.6e+63)) {
tmp = y / (y + 1.0);
} else {
tmp = x / (y + 1.0);
}
return tmp;
}
def code(x, y): tmp = 0 if (y <= -2.4e-28) or not (y <= 1.6e+63): tmp = y / (y + 1.0) else: tmp = x / (y + 1.0) return tmp
function code(x, y) tmp = 0.0 if ((y <= -2.4e-28) || !(y <= 1.6e+63)) tmp = Float64(y / Float64(y + 1.0)); else tmp = Float64(x / Float64(y + 1.0)); end return tmp end
function tmp_2 = code(x, y) tmp = 0.0; if ((y <= -2.4e-28) || ~((y <= 1.6e+63))) tmp = y / (y + 1.0); else tmp = x / (y + 1.0); end tmp_2 = tmp; end
code[x_, y_] := If[Or[LessEqual[y, -2.4e-28], N[Not[LessEqual[y, 1.6e+63]], $MachinePrecision]], N[(y / N[(y + 1.0), $MachinePrecision]), $MachinePrecision], N[(x / N[(y + 1.0), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -2.4 \cdot 10^{-28} \lor \neg \left(y \leq 1.6 \cdot 10^{+63}\right):\\
\;\;\;\;\frac{y}{y + 1}\\
\mathbf{else}:\\
\;\;\;\;\frac{x}{y + 1}\\
\end{array}
\end{array}
if y < -2.4000000000000002e-28 or 1.60000000000000006e63 < y Initial program 100.0%
Taylor expanded in x around 0 79.7%
+-commutative79.7%
Simplified79.7%
if -2.4000000000000002e-28 < y < 1.60000000000000006e63Initial program 100.0%
Taylor expanded in x around inf 79.6%
+-commutative79.6%
Simplified79.6%
Final simplification79.7%
(FPCore (x y) :precision binary64 (if (<= y -300000000.0) 1.0 (if (<= y 3.2e+63) (/ x (+ y 1.0)) 1.0)))
double code(double x, double y) {
double tmp;
if (y <= -300000000.0) {
tmp = 1.0;
} else if (y <= 3.2e+63) {
tmp = x / (y + 1.0);
} else {
tmp = 1.0;
}
return tmp;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8) :: tmp
if (y <= (-300000000.0d0)) then
tmp = 1.0d0
else if (y <= 3.2d+63) then
tmp = x / (y + 1.0d0)
else
tmp = 1.0d0
end if
code = tmp
end function
public static double code(double x, double y) {
double tmp;
if (y <= -300000000.0) {
tmp = 1.0;
} else if (y <= 3.2e+63) {
tmp = x / (y + 1.0);
} else {
tmp = 1.0;
}
return tmp;
}
def code(x, y): tmp = 0 if y <= -300000000.0: tmp = 1.0 elif y <= 3.2e+63: tmp = x / (y + 1.0) else: tmp = 1.0 return tmp
function code(x, y) tmp = 0.0 if (y <= -300000000.0) tmp = 1.0; elseif (y <= 3.2e+63) tmp = Float64(x / Float64(y + 1.0)); else tmp = 1.0; end return tmp end
function tmp_2 = code(x, y) tmp = 0.0; if (y <= -300000000.0) tmp = 1.0; elseif (y <= 3.2e+63) tmp = x / (y + 1.0); else tmp = 1.0; end tmp_2 = tmp; end
code[x_, y_] := If[LessEqual[y, -300000000.0], 1.0, If[LessEqual[y, 3.2e+63], N[(x / N[(y + 1.0), $MachinePrecision]), $MachinePrecision], 1.0]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -300000000:\\
\;\;\;\;1\\
\mathbf{elif}\;y \leq 3.2 \cdot 10^{+63}:\\
\;\;\;\;\frac{x}{y + 1}\\
\mathbf{else}:\\
\;\;\;\;1\\
\end{array}
\end{array}
if y < -3e8 or 3.20000000000000011e63 < y Initial program 100.0%
Taylor expanded in y around inf 80.1%
if -3e8 < y < 3.20000000000000011e63Initial program 100.0%
Taylor expanded in x around inf 77.1%
+-commutative77.1%
Simplified77.1%
Final simplification78.4%
(FPCore (x y) :precision binary64 (if (<= y -1.0) 1.0 (if (<= y 26000000000000.0) x 1.0)))
double code(double x, double y) {
double tmp;
if (y <= -1.0) {
tmp = 1.0;
} else if (y <= 26000000000000.0) {
tmp = x;
} else {
tmp = 1.0;
}
return tmp;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8) :: tmp
if (y <= (-1.0d0)) then
tmp = 1.0d0
else if (y <= 26000000000000.0d0) then
tmp = x
else
tmp = 1.0d0
end if
code = tmp
end function
public static double code(double x, double y) {
double tmp;
if (y <= -1.0) {
tmp = 1.0;
} else if (y <= 26000000000000.0) {
tmp = x;
} else {
tmp = 1.0;
}
return tmp;
}
def code(x, y): tmp = 0 if y <= -1.0: tmp = 1.0 elif y <= 26000000000000.0: tmp = x else: tmp = 1.0 return tmp
function code(x, y) tmp = 0.0 if (y <= -1.0) tmp = 1.0; elseif (y <= 26000000000000.0) tmp = x; else tmp = 1.0; end return tmp end
function tmp_2 = code(x, y) tmp = 0.0; if (y <= -1.0) tmp = 1.0; elseif (y <= 26000000000000.0) tmp = x; else tmp = 1.0; end tmp_2 = tmp; end
code[x_, y_] := If[LessEqual[y, -1.0], 1.0, If[LessEqual[y, 26000000000000.0], x, 1.0]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -1:\\
\;\;\;\;1\\
\mathbf{elif}\;y \leq 26000000000000:\\
\;\;\;\;x\\
\mathbf{else}:\\
\;\;\;\;1\\
\end{array}
\end{array}
if y < -1 or 2.6e13 < y Initial program 100.0%
Taylor expanded in y around inf 77.0%
if -1 < y < 2.6e13Initial program 100.0%
Taylor expanded in y around 0 76.9%
Final simplification77.0%
(FPCore (x y) :precision binary64 1.0)
double code(double x, double y) {
return 1.0;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = 1.0d0
end function
public static double code(double x, double y) {
return 1.0;
}
def code(x, y): return 1.0
function code(x, y) return 1.0 end
function tmp = code(x, y) tmp = 1.0; end
code[x_, y_] := 1.0
\begin{array}{l}
\\
1
\end{array}
Initial program 100.0%
Taylor expanded in y around inf 38.8%
Final simplification38.8%
herbie shell --seed 2024082
(FPCore (x y)
:name "Data.Colour.SRGB:invTransferFunction from colour-2.3.3"
:precision binary64
(/ (+ x y) (+ y 1.0)))