
(FPCore (x y z) :precision binary64 (+ (* (- 1.0 x) y) (* x z)))
double code(double x, double y, double z) {
return ((1.0 - x) * 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 = ((1.0d0 - x) * y) + (x * z)
end function
public static double code(double x, double y, double z) {
return ((1.0 - x) * y) + (x * z);
}
def code(x, y, z): return ((1.0 - x) * y) + (x * z)
function code(x, y, z) return Float64(Float64(Float64(1.0 - x) * y) + Float64(x * z)) end
function tmp = code(x, y, z) tmp = ((1.0 - x) * y) + (x * z); end
code[x_, y_, z_] := N[(N[(N[(1.0 - x), $MachinePrecision] * y), $MachinePrecision] + N[(x * z), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(1 - x\right) \cdot y + x \cdot z
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 5 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y z) :precision binary64 (+ (* (- 1.0 x) y) (* x z)))
double code(double x, double y, double z) {
return ((1.0 - x) * 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 = ((1.0d0 - x) * y) + (x * z)
end function
public static double code(double x, double y, double z) {
return ((1.0 - x) * y) + (x * z);
}
def code(x, y, z): return ((1.0 - x) * y) + (x * z)
function code(x, y, z) return Float64(Float64(Float64(1.0 - x) * y) + Float64(x * z)) end
function tmp = code(x, y, z) tmp = ((1.0 - x) * y) + (x * z); end
code[x_, y_, z_] := N[(N[(N[(1.0 - x), $MachinePrecision] * y), $MachinePrecision] + N[(x * z), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(1 - x\right) \cdot y + x \cdot z
\end{array}
(FPCore (x y z) :precision binary64 (fma x (- z y) y))
double code(double x, double y, double z) {
return fma(x, (z - y), y);
}
function code(x, y, z) return fma(x, Float64(z - y), y) end
code[x_, y_, z_] := N[(x * N[(z - y), $MachinePrecision] + y), $MachinePrecision]
\begin{array}{l}
\\
\mathsf{fma}\left(x, z - y, y\right)
\end{array}
Initial program 98.8%
Taylor expanded in x around 0
+-commutativeN/A
distribute-lft-inN/A
mul-1-negN/A
distribute-rgt-neg-inN/A
mul-1-negN/A
associate-+r+N/A
mul-1-negN/A
unsub-negN/A
associate-+l-N/A
distribute-lft-out--N/A
unsub-negN/A
mul-1-negN/A
sub-negN/A
mul-1-negN/A
+-commutativeN/A
mul-1-negN/A
distribute-rgt-neg-inN/A
lower-fma.f64N/A
Applied rewrites100.0%
(FPCore (x y z) :precision binary64 (let* ((t_0 (* x (- z y)))) (if (<= x -1.9e-34) t_0 (if (<= x 28.0) (- y (* x y)) t_0))))
double code(double x, double y, double z) {
double t_0 = x * (z - y);
double tmp;
if (x <= -1.9e-34) {
tmp = t_0;
} else if (x <= 28.0) {
tmp = y - (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 = x * (z - y)
if (x <= (-1.9d-34)) then
tmp = t_0
else if (x <= 28.0d0) then
tmp = y - (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 = x * (z - y);
double tmp;
if (x <= -1.9e-34) {
tmp = t_0;
} else if (x <= 28.0) {
tmp = y - (x * y);
} else {
tmp = t_0;
}
return tmp;
}
def code(x, y, z): t_0 = x * (z - y) tmp = 0 if x <= -1.9e-34: tmp = t_0 elif x <= 28.0: tmp = y - (x * y) else: tmp = t_0 return tmp
function code(x, y, z) t_0 = Float64(x * Float64(z - y)) tmp = 0.0 if (x <= -1.9e-34) tmp = t_0; elseif (x <= 28.0) tmp = Float64(y - Float64(x * y)); else tmp = t_0; end return tmp end
function tmp_2 = code(x, y, z) t_0 = x * (z - y); tmp = 0.0; if (x <= -1.9e-34) tmp = t_0; elseif (x <= 28.0) tmp = y - (x * y); else tmp = t_0; end tmp_2 = tmp; end
code[x_, y_, z_] := Block[{t$95$0 = N[(x * N[(z - y), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[x, -1.9e-34], t$95$0, If[LessEqual[x, 28.0], N[(y - N[(x * y), $MachinePrecision]), $MachinePrecision], t$95$0]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := x \cdot \left(z - y\right)\\
\mathbf{if}\;x \leq -1.9 \cdot 10^{-34}:\\
\;\;\;\;t\_0\\
\mathbf{elif}\;x \leq 28:\\
\;\;\;\;y - x \cdot y\\
\mathbf{else}:\\
\;\;\;\;t\_0\\
\end{array}
\end{array}
if x < -1.9000000000000001e-34 or 28 < x Initial program 97.5%
Taylor expanded in x 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
unsub-negN/A
mul-1-negN/A
remove-double-negN/A
lower--.f6497.7
Applied rewrites97.7%
if -1.9000000000000001e-34 < x < 28Initial program 100.0%
Taylor expanded in y around inf
distribute-rgt-out--N/A
*-lft-identityN/A
lower--.f64N/A
*-commutativeN/A
lower-*.f6476.2
Applied rewrites76.2%
Final simplification86.5%
(FPCore (x y z) :precision binary64 (let* ((t_0 (* x (- y)))) (if (<= y -5.2e+101) t_0 (if (<= y 2.15e-32) (* x z) t_0))))
double code(double x, double y, double z) {
double t_0 = x * -y;
double tmp;
if (y <= -5.2e+101) {
tmp = t_0;
} else if (y <= 2.15e-32) {
tmp = x * 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 = x * -y
if (y <= (-5.2d+101)) then
tmp = t_0
else if (y <= 2.15d-32) then
tmp = x * z
else
tmp = t_0
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double t_0 = x * -y;
double tmp;
if (y <= -5.2e+101) {
tmp = t_0;
} else if (y <= 2.15e-32) {
tmp = x * z;
} else {
tmp = t_0;
}
return tmp;
}
def code(x, y, z): t_0 = x * -y tmp = 0 if y <= -5.2e+101: tmp = t_0 elif y <= 2.15e-32: tmp = x * z else: tmp = t_0 return tmp
function code(x, y, z) t_0 = Float64(x * Float64(-y)) tmp = 0.0 if (y <= -5.2e+101) tmp = t_0; elseif (y <= 2.15e-32) tmp = Float64(x * z); else tmp = t_0; end return tmp end
function tmp_2 = code(x, y, z) t_0 = x * -y; tmp = 0.0; if (y <= -5.2e+101) tmp = t_0; elseif (y <= 2.15e-32) tmp = x * z; else tmp = t_0; end tmp_2 = tmp; end
code[x_, y_, z_] := Block[{t$95$0 = N[(x * (-y)), $MachinePrecision]}, If[LessEqual[y, -5.2e+101], t$95$0, If[LessEqual[y, 2.15e-32], N[(x * z), $MachinePrecision], t$95$0]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := x \cdot \left(-y\right)\\
\mathbf{if}\;y \leq -5.2 \cdot 10^{+101}:\\
\;\;\;\;t\_0\\
\mathbf{elif}\;y \leq 2.15 \cdot 10^{-32}:\\
\;\;\;\;x \cdot z\\
\mathbf{else}:\\
\;\;\;\;t\_0\\
\end{array}
\end{array}
if y < -5.2e101 or 2.14999999999999995e-32 < y Initial program 97.3%
Taylor expanded in x 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
unsub-negN/A
mul-1-negN/A
remove-double-negN/A
lower--.f6454.2
Applied rewrites54.2%
Taylor expanded in z around 0
Applied rewrites47.7%
if -5.2e101 < y < 2.14999999999999995e-32Initial program 100.0%
Taylor expanded in y around 0
lower-*.f6460.3
Applied rewrites60.3%
(FPCore (x y z) :precision binary64 (* x (- z y)))
double code(double x, double y, double z) {
return x * (z - 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 * (z - y)
end function
public static double code(double x, double y, double z) {
return x * (z - y);
}
def code(x, y, z): return x * (z - y)
function code(x, y, z) return Float64(x * Float64(z - y)) end
function tmp = code(x, y, z) tmp = x * (z - y); end
code[x_, y_, z_] := N[(x * N[(z - y), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x \cdot \left(z - y\right)
\end{array}
Initial program 98.8%
Taylor expanded in x 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
unsub-negN/A
mul-1-negN/A
remove-double-negN/A
lower--.f6461.1
Applied rewrites61.1%
(FPCore (x y z) :precision binary64 (* x z))
double code(double x, double y, double z) {
return 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 = x * z
end function
public static double code(double x, double y, double z) {
return x * z;
}
def code(x, y, z): return x * z
function code(x, y, z) return Float64(x * z) end
function tmp = code(x, y, z) tmp = x * z; end
code[x_, y_, z_] := N[(x * z), $MachinePrecision]
\begin{array}{l}
\\
x \cdot z
\end{array}
Initial program 98.8%
Taylor expanded in y around 0
lower-*.f6439.0
Applied rewrites39.0%
(FPCore (x y z) :precision binary64 (- y (* x (- y z))))
double code(double x, double y, double z) {
return y - (x * (y - 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 * (y - z))
end function
public static double code(double x, double y, double z) {
return y - (x * (y - z));
}
def code(x, y, z): return y - (x * (y - z))
function code(x, y, z) return Float64(y - Float64(x * Float64(y - z))) end
function tmp = code(x, y, z) tmp = y - (x * (y - z)); end
code[x_, y_, z_] := N[(y - N[(x * N[(y - z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
y - x \cdot \left(y - z\right)
\end{array}
herbie shell --seed 2024221
(FPCore (x y z)
:name "Diagrams.Color.HSV:lerp from diagrams-contrib-1.3.0.5"
:precision binary64
:alt
(! :herbie-platform default (- y (* x (- y z))))
(+ (* (- 1.0 x) y) (* x z)))