
(FPCore (x y z) :precision binary64 (+ (* x y) (* z (- 1.0 y))))
double code(double x, double y, double z) {
return (x * y) + (z * (1.0 - y));
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
code = (x * y) + (z * (1.0d0 - y))
end function
public static double code(double x, double y, double z) {
return (x * y) + (z * (1.0 - y));
}
def code(x, y, z): return (x * y) + (z * (1.0 - y))
function code(x, y, z) return Float64(Float64(x * y) + Float64(z * Float64(1.0 - y))) end
function tmp = code(x, y, z) tmp = (x * y) + (z * (1.0 - y)); end
code[x_, y_, z_] := N[(N[(x * y), $MachinePrecision] + N[(z * N[(1.0 - y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x \cdot y + z \cdot \left(1 - y\right)
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 5 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y z) :precision binary64 (+ (* x y) (* z (- 1.0 y))))
double code(double x, double y, double z) {
return (x * y) + (z * (1.0 - y));
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
code = (x * y) + (z * (1.0d0 - y))
end function
public static double code(double x, double y, double z) {
return (x * y) + (z * (1.0 - y));
}
def code(x, y, z): return (x * y) + (z * (1.0 - y))
function code(x, y, z) return Float64(Float64(x * y) + Float64(z * Float64(1.0 - y))) end
function tmp = code(x, y, z) tmp = (x * y) + (z * (1.0 - y)); end
code[x_, y_, z_] := N[(N[(x * y), $MachinePrecision] + N[(z * N[(1.0 - y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x \cdot y + z \cdot \left(1 - y\right)
\end{array}
(FPCore (x y z) :precision binary64 (fma y (- x z) z))
double code(double x, double y, double z) {
return fma(y, (x - z), z);
}
function code(x, y, z) return fma(y, Float64(x - z), z) end
code[x_, y_, z_] := N[(y * N[(x - z), $MachinePrecision] + z), $MachinePrecision]
\begin{array}{l}
\\
\mathsf{fma}\left(y, x - z, z\right)
\end{array}
Initial program 96.5%
Taylor expanded in x around 0
distribute-rgt-out--N/A
unsub-negN/A
*-lft-identityN/A
mul-1-negN/A
+-commutativeN/A
associate-+l+N/A
*-commutativeN/A
mul-1-negN/A
distribute-rgt-neg-inN/A
mul-1-negN/A
distribute-lft-inN/A
+-commutativeN/A
remove-double-negN/A
mul-1-negN/A
mul-1-negN/A
distribute-neg-inN/A
lower-fma.f64N/A
Applied rewrites100.0%
(FPCore (x y z) :precision binary64 (let* ((t_0 (* y (- x z)))) (if (<= y -7.8e-100) t_0 (if (<= y 6.8e-39) (- z (* y z)) t_0))))
double code(double x, double y, double z) {
double t_0 = y * (x - z);
double tmp;
if (y <= -7.8e-100) {
tmp = t_0;
} else if (y <= 6.8e-39) {
tmp = z - (y * z);
} else {
tmp = t_0;
}
return tmp;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8) :: t_0
real(8) :: tmp
t_0 = y * (x - z)
if (y <= (-7.8d-100)) then
tmp = t_0
else if (y <= 6.8d-39) then
tmp = z - (y * z)
else
tmp = t_0
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double t_0 = y * (x - z);
double tmp;
if (y <= -7.8e-100) {
tmp = t_0;
} else if (y <= 6.8e-39) {
tmp = z - (y * z);
} else {
tmp = t_0;
}
return tmp;
}
def code(x, y, z): t_0 = y * (x - z) tmp = 0 if y <= -7.8e-100: tmp = t_0 elif y <= 6.8e-39: tmp = z - (y * z) else: tmp = t_0 return tmp
function code(x, y, z) t_0 = Float64(y * Float64(x - z)) tmp = 0.0 if (y <= -7.8e-100) tmp = t_0; elseif (y <= 6.8e-39) tmp = Float64(z - Float64(y * z)); else tmp = t_0; end return tmp end
function tmp_2 = code(x, y, z) t_0 = y * (x - z); tmp = 0.0; if (y <= -7.8e-100) tmp = t_0; elseif (y <= 6.8e-39) tmp = z - (y * z); else tmp = t_0; end tmp_2 = tmp; end
code[x_, y_, z_] := Block[{t$95$0 = N[(y * N[(x - z), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[y, -7.8e-100], t$95$0, If[LessEqual[y, 6.8e-39], N[(z - N[(y * z), $MachinePrecision]), $MachinePrecision], t$95$0]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := y \cdot \left(x - z\right)\\
\mathbf{if}\;y \leq -7.8 \cdot 10^{-100}:\\
\;\;\;\;t\_0\\
\mathbf{elif}\;y \leq 6.8 \cdot 10^{-39}:\\
\;\;\;\;z - y \cdot z\\
\mathbf{else}:\\
\;\;\;\;t\_0\\
\end{array}
\end{array}
if y < -7.79999999999999955e-100 or 6.7999999999999998e-39 < y Initial program 94.2%
Taylor expanded in y around inf
+-commutativeN/A
remove-double-negN/A
mul-1-negN/A
mul-1-negN/A
distribute-neg-inN/A
lower-*.f64N/A
+-commutativeN/A
distribute-neg-inN/A
mul-1-negN/A
remove-double-negN/A
unsub-negN/A
lower--.f6494.4
Applied rewrites94.4%
if -7.79999999999999955e-100 < y < 6.7999999999999998e-39Initial program 100.0%
Taylor expanded in x around 0
distribute-rgt-out--N/A
*-lft-identityN/A
lower--.f64N/A
*-commutativeN/A
lower-*.f6478.4
Applied rewrites78.4%
Final simplification88.2%
(FPCore (x y z) :precision binary64 (let* ((t_0 (* y (- z)))) (if (<= z -1.05e+31) t_0 (if (<= z 0.17) (* x y) t_0))))
double code(double x, double y, double z) {
double t_0 = y * -z;
double tmp;
if (z <= -1.05e+31) {
tmp = t_0;
} else if (z <= 0.17) {
tmp = x * y;
} else {
tmp = t_0;
}
return tmp;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8) :: t_0
real(8) :: tmp
t_0 = y * -z
if (z <= (-1.05d+31)) then
tmp = t_0
else if (z <= 0.17d0) then
tmp = x * y
else
tmp = t_0
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double t_0 = y * -z;
double tmp;
if (z <= -1.05e+31) {
tmp = t_0;
} else if (z <= 0.17) {
tmp = x * y;
} else {
tmp = t_0;
}
return tmp;
}
def code(x, y, z): t_0 = y * -z tmp = 0 if z <= -1.05e+31: tmp = t_0 elif z <= 0.17: tmp = x * y else: tmp = t_0 return tmp
function code(x, y, z) t_0 = Float64(y * Float64(-z)) tmp = 0.0 if (z <= -1.05e+31) tmp = t_0; elseif (z <= 0.17) tmp = Float64(x * y); else tmp = t_0; end return tmp end
function tmp_2 = code(x, y, z) t_0 = y * -z; tmp = 0.0; if (z <= -1.05e+31) tmp = t_0; elseif (z <= 0.17) tmp = x * y; else tmp = t_0; end tmp_2 = tmp; end
code[x_, y_, z_] := Block[{t$95$0 = N[(y * (-z)), $MachinePrecision]}, If[LessEqual[z, -1.05e+31], t$95$0, If[LessEqual[z, 0.17], N[(x * y), $MachinePrecision], t$95$0]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := y \cdot \left(-z\right)\\
\mathbf{if}\;z \leq -1.05 \cdot 10^{+31}:\\
\;\;\;\;t\_0\\
\mathbf{elif}\;z \leq 0.17:\\
\;\;\;\;x \cdot y\\
\mathbf{else}:\\
\;\;\;\;t\_0\\
\end{array}
\end{array}
if z < -1.04999999999999989e31 or 0.170000000000000012 < z Initial program 92.8%
Taylor expanded in y around inf
+-commutativeN/A
remove-double-negN/A
mul-1-negN/A
mul-1-negN/A
distribute-neg-inN/A
lower-*.f64N/A
+-commutativeN/A
distribute-neg-inN/A
mul-1-negN/A
remove-double-negN/A
unsub-negN/A
lower--.f6461.0
Applied rewrites61.0%
Taylor expanded in x around 0
Applied rewrites49.4%
if -1.04999999999999989e31 < z < 0.170000000000000012Initial program 100.0%
Taylor expanded in x around inf
*-commutativeN/A
lower-*.f6463.7
Applied rewrites63.7%
Final simplification56.8%
(FPCore (x y z) :precision binary64 (* y (- x z)))
double code(double x, double y, double z) {
return y * (x - z);
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
code = y * (x - z)
end function
public static double code(double x, double y, double z) {
return y * (x - z);
}
def code(x, y, z): return y * (x - z)
function code(x, y, z) return Float64(y * Float64(x - z)) end
function tmp = code(x, y, z) tmp = y * (x - z); end
code[x_, y_, z_] := N[(y * N[(x - z), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
y \cdot \left(x - z\right)
\end{array}
Initial program 96.5%
Taylor expanded in y around inf
+-commutativeN/A
remove-double-negN/A
mul-1-negN/A
mul-1-negN/A
distribute-neg-inN/A
lower-*.f64N/A
+-commutativeN/A
distribute-neg-inN/A
mul-1-negN/A
remove-double-negN/A
unsub-negN/A
lower--.f6467.2
Applied rewrites67.2%
(FPCore (x y z) :precision binary64 (* x y))
double code(double x, double y, double z) {
return x * y;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
code = x * y
end function
public static double code(double x, double y, double z) {
return x * y;
}
def code(x, y, z): return x * y
function code(x, y, z) return Float64(x * y) end
function tmp = code(x, y, z) tmp = x * y; end
code[x_, y_, z_] := N[(x * y), $MachinePrecision]
\begin{array}{l}
\\
x \cdot y
\end{array}
Initial program 96.5%
Taylor expanded in x around inf
*-commutativeN/A
lower-*.f6442.1
Applied rewrites42.1%
Final simplification42.1%
(FPCore (x y z) :precision binary64 (- z (* (- z x) y)))
double code(double x, double y, double z) {
return z - ((z - x) * y);
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
code = z - ((z - x) * y)
end function
public static double code(double x, double y, double z) {
return z - ((z - x) * y);
}
def code(x, y, z): return z - ((z - x) * y)
function code(x, y, z) return Float64(z - Float64(Float64(z - x) * y)) end
function tmp = code(x, y, z) tmp = z - ((z - x) * y); end
code[x_, y_, z_] := N[(z - N[(N[(z - x), $MachinePrecision] * y), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
z - \left(z - x\right) \cdot y
\end{array}
herbie shell --seed 2024226
(FPCore (x y z)
:name "Diagrams.TwoD.Segment:bezierClip from diagrams-lib-1.3.0.3"
:precision binary64
:alt
(! :herbie-platform default (- z (* (- z x) y)))
(+ (* x y) (* z (- 1.0 y))))