
(FPCore (x y) :precision binary64 (+ x (* (- 1.0 x) (- 1.0 y))))
double code(double x, double y) {
return x + ((1.0 - x) * (1.0 - y));
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = x + ((1.0d0 - x) * (1.0d0 - y))
end function
public static double code(double x, double y) {
return x + ((1.0 - x) * (1.0 - y));
}
def code(x, y): return x + ((1.0 - x) * (1.0 - y))
function code(x, y) return Float64(x + Float64(Float64(1.0 - x) * Float64(1.0 - y))) end
function tmp = code(x, y) tmp = x + ((1.0 - x) * (1.0 - y)); end
code[x_, y_] := N[(x + N[(N[(1.0 - x), $MachinePrecision] * N[(1.0 - y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x + \left(1 - x\right) \cdot \left(1 - y\right)
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 7 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y) :precision binary64 (+ x (* (- 1.0 x) (- 1.0 y))))
double code(double x, double y) {
return x + ((1.0 - x) * (1.0 - y));
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = x + ((1.0d0 - x) * (1.0d0 - y))
end function
public static double code(double x, double y) {
return x + ((1.0 - x) * (1.0 - y));
}
def code(x, y): return x + ((1.0 - x) * (1.0 - y))
function code(x, y) return Float64(x + Float64(Float64(1.0 - x) * Float64(1.0 - y))) end
function tmp = code(x, y) tmp = x + ((1.0 - x) * (1.0 - y)); end
code[x_, y_] := N[(x + N[(N[(1.0 - x), $MachinePrecision] * N[(1.0 - y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x + \left(1 - x\right) \cdot \left(1 - y\right)
\end{array}
(FPCore (x y) :precision binary64 (fma y x (- 1.0 y)))
double code(double x, double y) {
return fma(y, x, (1.0 - y));
}
function code(x, y) return fma(y, x, Float64(1.0 - y)) end
code[x_, y_] := N[(y * x + N[(1.0 - y), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\mathsf{fma}\left(y, x, 1 - y\right)
\end{array}
Initial program 77.2%
Taylor expanded in x around 0
+-commutativeN/A
associate--l+N/A
*-commutativeN/A
mul-1-negN/A
unsub-negN/A
associate--r-N/A
metadata-evalN/A
+-lft-identityN/A
lower-fma.f64N/A
lower--.f64100.0
Applied rewrites100.0%
(FPCore (x y) :precision binary64 (let* ((t_0 (+ x (* (- 1.0 x) (- 1.0 y))))) (if (or (<= t_0 -1e+69) (not (<= t_0 5e+14))) (* (- x 1.0) y) (- 1.0 y))))
double code(double x, double y) {
double t_0 = x + ((1.0 - x) * (1.0 - y));
double tmp;
if ((t_0 <= -1e+69) || !(t_0 <= 5e+14)) {
tmp = (x - 1.0) * y;
} else {
tmp = 1.0 - y;
}
return tmp;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8) :: t_0
real(8) :: tmp
t_0 = x + ((1.0d0 - x) * (1.0d0 - y))
if ((t_0 <= (-1d+69)) .or. (.not. (t_0 <= 5d+14))) then
tmp = (x - 1.0d0) * y
else
tmp = 1.0d0 - y
end if
code = tmp
end function
public static double code(double x, double y) {
double t_0 = x + ((1.0 - x) * (1.0 - y));
double tmp;
if ((t_0 <= -1e+69) || !(t_0 <= 5e+14)) {
tmp = (x - 1.0) * y;
} else {
tmp = 1.0 - y;
}
return tmp;
}
def code(x, y): t_0 = x + ((1.0 - x) * (1.0 - y)) tmp = 0 if (t_0 <= -1e+69) or not (t_0 <= 5e+14): tmp = (x - 1.0) * y else: tmp = 1.0 - y return tmp
function code(x, y) t_0 = Float64(x + Float64(Float64(1.0 - x) * Float64(1.0 - y))) tmp = 0.0 if ((t_0 <= -1e+69) || !(t_0 <= 5e+14)) tmp = Float64(Float64(x - 1.0) * y); else tmp = Float64(1.0 - y); end return tmp end
function tmp_2 = code(x, y) t_0 = x + ((1.0 - x) * (1.0 - y)); tmp = 0.0; if ((t_0 <= -1e+69) || ~((t_0 <= 5e+14))) tmp = (x - 1.0) * y; else tmp = 1.0 - y; end tmp_2 = tmp; end
code[x_, y_] := Block[{t$95$0 = N[(x + N[(N[(1.0 - x), $MachinePrecision] * N[(1.0 - y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[Or[LessEqual[t$95$0, -1e+69], N[Not[LessEqual[t$95$0, 5e+14]], $MachinePrecision]], N[(N[(x - 1.0), $MachinePrecision] * y), $MachinePrecision], N[(1.0 - y), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := x + \left(1 - x\right) \cdot \left(1 - y\right)\\
\mathbf{if}\;t\_0 \leq -1 \cdot 10^{+69} \lor \neg \left(t\_0 \leq 5 \cdot 10^{+14}\right):\\
\;\;\;\;\left(x - 1\right) \cdot y\\
\mathbf{else}:\\
\;\;\;\;1 - y\\
\end{array}
\end{array}
if (+.f64 x (*.f64 (-.f64 #s(literal 1 binary64) x) (-.f64 #s(literal 1 binary64) y))) < -1.0000000000000001e69 or 5e14 < (+.f64 x (*.f64 (-.f64 #s(literal 1 binary64) x) (-.f64 #s(literal 1 binary64) y))) Initial program 99.8%
Taylor expanded in y around inf
*-commutativeN/A
associate-*r*N/A
lower-*.f64N/A
mul-1-negN/A
sub-negN/A
+-commutativeN/A
distribute-neg-inN/A
remove-double-negN/A
sub-negN/A
lower--.f64100.0
Applied rewrites100.0%
if -1.0000000000000001e69 < (+.f64 x (*.f64 (-.f64 #s(literal 1 binary64) x) (-.f64 #s(literal 1 binary64) y))) < 5e14Initial program 58.4%
Taylor expanded in x around 0
lower--.f6480.6
Applied rewrites80.6%
Final simplification89.4%
(FPCore (x y)
:precision binary64
(let* ((t_0 (+ x (* (- 1.0 x) (- 1.0 y)))))
(if (<= t_0 -1e+69)
(fma y x (- y))
(if (<= t_0 5e+14) (- 1.0 y) (* (- x 1.0) y)))))
double code(double x, double y) {
double t_0 = x + ((1.0 - x) * (1.0 - y));
double tmp;
if (t_0 <= -1e+69) {
tmp = fma(y, x, -y);
} else if (t_0 <= 5e+14) {
tmp = 1.0 - y;
} else {
tmp = (x - 1.0) * y;
}
return tmp;
}
function code(x, y) t_0 = Float64(x + Float64(Float64(1.0 - x) * Float64(1.0 - y))) tmp = 0.0 if (t_0 <= -1e+69) tmp = fma(y, x, Float64(-y)); elseif (t_0 <= 5e+14) tmp = Float64(1.0 - y); else tmp = Float64(Float64(x - 1.0) * y); end return tmp end
code[x_, y_] := Block[{t$95$0 = N[(x + N[(N[(1.0 - x), $MachinePrecision] * N[(1.0 - y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[t$95$0, -1e+69], N[(y * x + (-y)), $MachinePrecision], If[LessEqual[t$95$0, 5e+14], N[(1.0 - y), $MachinePrecision], N[(N[(x - 1.0), $MachinePrecision] * y), $MachinePrecision]]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := x + \left(1 - x\right) \cdot \left(1 - y\right)\\
\mathbf{if}\;t\_0 \leq -1 \cdot 10^{+69}:\\
\;\;\;\;\mathsf{fma}\left(y, x, -y\right)\\
\mathbf{elif}\;t\_0 \leq 5 \cdot 10^{+14}:\\
\;\;\;\;1 - y\\
\mathbf{else}:\\
\;\;\;\;\left(x - 1\right) \cdot y\\
\end{array}
\end{array}
if (+.f64 x (*.f64 (-.f64 #s(literal 1 binary64) x) (-.f64 #s(literal 1 binary64) y))) < -1.0000000000000001e69Initial program 99.9%
Taylor expanded in x around inf
*-commutativeN/A
mul-1-negN/A
unsub-negN/A
associate--r-N/A
metadata-evalN/A
+-lft-identityN/A
lower-*.f6453.5
Applied rewrites53.5%
Taylor expanded in y around inf
associate-*r*N/A
distribute-lft-out--N/A
*-rgt-identityN/A
mul-1-negN/A
cancel-sign-subN/A
*-commutativeN/A
+-commutativeN/A
*-commutativeN/A
lower-fma.f64N/A
mul-1-negN/A
lower-neg.f64100.0
Applied rewrites100.0%
if -1.0000000000000001e69 < (+.f64 x (*.f64 (-.f64 #s(literal 1 binary64) x) (-.f64 #s(literal 1 binary64) y))) < 5e14Initial program 58.4%
Taylor expanded in x around 0
lower--.f6480.6
Applied rewrites80.6%
if 5e14 < (+.f64 x (*.f64 (-.f64 #s(literal 1 binary64) x) (-.f64 #s(literal 1 binary64) y))) Initial program 99.7%
Taylor expanded in y around inf
*-commutativeN/A
associate-*r*N/A
lower-*.f64N/A
mul-1-negN/A
sub-negN/A
+-commutativeN/A
distribute-neg-inN/A
remove-double-negN/A
sub-negN/A
lower--.f64100.0
Applied rewrites100.0%
(FPCore (x y) :precision binary64 (if (or (<= (- 1.0 y) -10000000000.0) (not (<= (- 1.0 y) 2.0))) (- y) 1.0))
double code(double x, double y) {
double tmp;
if (((1.0 - y) <= -10000000000.0) || !((1.0 - y) <= 2.0)) {
tmp = -y;
} 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 (((1.0d0 - y) <= (-10000000000.0d0)) .or. (.not. ((1.0d0 - y) <= 2.0d0))) then
tmp = -y
else
tmp = 1.0d0
end if
code = tmp
end function
public static double code(double x, double y) {
double tmp;
if (((1.0 - y) <= -10000000000.0) || !((1.0 - y) <= 2.0)) {
tmp = -y;
} else {
tmp = 1.0;
}
return tmp;
}
def code(x, y): tmp = 0 if ((1.0 - y) <= -10000000000.0) or not ((1.0 - y) <= 2.0): tmp = -y else: tmp = 1.0 return tmp
function code(x, y) tmp = 0.0 if ((Float64(1.0 - y) <= -10000000000.0) || !(Float64(1.0 - y) <= 2.0)) tmp = Float64(-y); else tmp = 1.0; end return tmp end
function tmp_2 = code(x, y) tmp = 0.0; if (((1.0 - y) <= -10000000000.0) || ~(((1.0 - y) <= 2.0))) tmp = -y; else tmp = 1.0; end tmp_2 = tmp; end
code[x_, y_] := If[Or[LessEqual[N[(1.0 - y), $MachinePrecision], -10000000000.0], N[Not[LessEqual[N[(1.0 - y), $MachinePrecision], 2.0]], $MachinePrecision]], (-y), 1.0]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;1 - y \leq -10000000000 \lor \neg \left(1 - y \leq 2\right):\\
\;\;\;\;-y\\
\mathbf{else}:\\
\;\;\;\;1\\
\end{array}
\end{array}
if (-.f64 #s(literal 1 binary64) y) < -1e10 or 2 < (-.f64 #s(literal 1 binary64) y) Initial program 100.0%
Taylor expanded in y around inf
*-commutativeN/A
associate-*r*N/A
lower-*.f64N/A
mul-1-negN/A
sub-negN/A
+-commutativeN/A
distribute-neg-inN/A
remove-double-negN/A
sub-negN/A
lower--.f6499.5
Applied rewrites99.5%
Taylor expanded in x around 0
Applied rewrites49.8%
if -1e10 < (-.f64 #s(literal 1 binary64) y) < 2Initial program 56.7%
Taylor expanded in x around inf
*-commutativeN/A
mul-1-negN/A
unsub-negN/A
associate--r-N/A
metadata-evalN/A
+-lft-identityN/A
lower-*.f6420.8
Applied rewrites20.8%
Taylor expanded in y around 0
Applied rewrites77.3%
Final simplification64.3%
(FPCore (x y) :precision binary64 (if (or (<= x -2.7e+22) (not (<= x 122000000.0))) (* y x) (- 1.0 y)))
double code(double x, double y) {
double tmp;
if ((x <= -2.7e+22) || !(x <= 122000000.0)) {
tmp = y * x;
} else {
tmp = 1.0 - y;
}
return tmp;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8) :: tmp
if ((x <= (-2.7d+22)) .or. (.not. (x <= 122000000.0d0))) then
tmp = y * x
else
tmp = 1.0d0 - y
end if
code = tmp
end function
public static double code(double x, double y) {
double tmp;
if ((x <= -2.7e+22) || !(x <= 122000000.0)) {
tmp = y * x;
} else {
tmp = 1.0 - y;
}
return tmp;
}
def code(x, y): tmp = 0 if (x <= -2.7e+22) or not (x <= 122000000.0): tmp = y * x else: tmp = 1.0 - y return tmp
function code(x, y) tmp = 0.0 if ((x <= -2.7e+22) || !(x <= 122000000.0)) tmp = Float64(y * x); else tmp = Float64(1.0 - y); end return tmp end
function tmp_2 = code(x, y) tmp = 0.0; if ((x <= -2.7e+22) || ~((x <= 122000000.0))) tmp = y * x; else tmp = 1.0 - y; end tmp_2 = tmp; end
code[x_, y_] := If[Or[LessEqual[x, -2.7e+22], N[Not[LessEqual[x, 122000000.0]], $MachinePrecision]], N[(y * x), $MachinePrecision], N[(1.0 - y), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -2.7 \cdot 10^{+22} \lor \neg \left(x \leq 122000000\right):\\
\;\;\;\;y \cdot x\\
\mathbf{else}:\\
\;\;\;\;1 - y\\
\end{array}
\end{array}
if x < -2.7000000000000002e22 or 1.22e8 < x Initial program 52.5%
Taylor expanded in x around inf
*-commutativeN/A
mul-1-negN/A
unsub-negN/A
associate--r-N/A
metadata-evalN/A
+-lft-identityN/A
lower-*.f6471.2
Applied rewrites71.2%
if -2.7000000000000002e22 < x < 1.22e8Initial program 99.3%
Taylor expanded in x around 0
lower--.f6499.0
Applied rewrites99.0%
Final simplification85.9%
(FPCore (x y) :precision binary64 (- 1.0 y))
double code(double x, double y) {
return 1.0 - y;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = 1.0d0 - y
end function
public static double code(double x, double y) {
return 1.0 - y;
}
def code(x, y): return 1.0 - y
function code(x, y) return Float64(1.0 - y) end
function tmp = code(x, y) tmp = 1.0 - y; end
code[x_, y_] := N[(1.0 - y), $MachinePrecision]
\begin{array}{l}
\\
1 - y
\end{array}
Initial program 77.2%
Taylor expanded in x around 0
lower--.f6465.5
Applied rewrites65.5%
(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 77.2%
Taylor expanded in x around inf
*-commutativeN/A
mul-1-negN/A
unsub-negN/A
associate--r-N/A
metadata-evalN/A
+-lft-identityN/A
lower-*.f6435.3
Applied rewrites35.3%
Taylor expanded in y around 0
Applied rewrites42.0%
(FPCore (x y) :precision binary64 (- (* y x) (- y 1.0)))
double code(double x, double y) {
return (y * x) - (y - 1.0);
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = (y * x) - (y - 1.0d0)
end function
public static double code(double x, double y) {
return (y * x) - (y - 1.0);
}
def code(x, y): return (y * x) - (y - 1.0)
function code(x, y) return Float64(Float64(y * x) - Float64(y - 1.0)) end
function tmp = code(x, y) tmp = (y * x) - (y - 1.0); end
code[x_, y_] := N[(N[(y * x), $MachinePrecision] - N[(y - 1.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
y \cdot x - \left(y - 1\right)
\end{array}
herbie shell --seed 2024313
(FPCore (x y)
:name "Graphics.Rendering.Chart.Plot.Vectors:renderPlotVectors from Chart-1.5.3"
:precision binary64
:alt
(! :herbie-platform default (- (* y x) (- y 1)))
(+ x (* (- 1.0 x) (- 1.0 y))))