
(FPCore (x y z) :precision binary64 (- (* (* x 3.0) y) z))
double code(double x, double y, double z) {
return ((x * 3.0) * 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 = ((x * 3.0d0) * y) - z
end function
public static double code(double x, double y, double z) {
return ((x * 3.0) * y) - z;
}
def code(x, y, z): return ((x * 3.0) * y) - z
function code(x, y, z) return Float64(Float64(Float64(x * 3.0) * y) - z) end
function tmp = code(x, y, z) tmp = ((x * 3.0) * y) - z; end
code[x_, y_, z_] := N[(N[(N[(x * 3.0), $MachinePrecision] * y), $MachinePrecision] - z), $MachinePrecision]
\begin{array}{l}
\\
\left(x \cdot 3\right) \cdot y - z
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 6 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y z) :precision binary64 (- (* (* x 3.0) y) z))
double code(double x, double y, double z) {
return ((x * 3.0) * 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 = ((x * 3.0d0) * y) - z
end function
public static double code(double x, double y, double z) {
return ((x * 3.0) * y) - z;
}
def code(x, y, z): return ((x * 3.0) * y) - z
function code(x, y, z) return Float64(Float64(Float64(x * 3.0) * y) - z) end
function tmp = code(x, y, z) tmp = ((x * 3.0) * y) - z; end
code[x_, y_, z_] := N[(N[(N[(x * 3.0), $MachinePrecision] * y), $MachinePrecision] - z), $MachinePrecision]
\begin{array}{l}
\\
\left(x \cdot 3\right) \cdot y - z
\end{array}
(FPCore (x y z) :precision binary64 (- (* (* x y) 3.0) z))
double code(double x, double y, double z) {
return ((x * y) * 3.0) - 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 * y) * 3.0d0) - z
end function
public static double code(double x, double y, double z) {
return ((x * y) * 3.0) - z;
}
def code(x, y, z): return ((x * y) * 3.0) - z
function code(x, y, z) return Float64(Float64(Float64(x * y) * 3.0) - z) end
function tmp = code(x, y, z) tmp = ((x * y) * 3.0) - z; end
code[x_, y_, z_] := N[(N[(N[(x * y), $MachinePrecision] * 3.0), $MachinePrecision] - z), $MachinePrecision]
\begin{array}{l}
\\
\left(x \cdot y\right) \cdot 3 - z
\end{array}
Initial program 99.8%
associate-*l*N/A
*-commutativeN/A
associate-*r*N/A
*-lowering-*.f64N/A
*-lowering-*.f6499.9%
Applied egg-rr99.9%
(FPCore (x y z) :precision binary64 (let* ((t_0 (* y (* x 3.0)))) (if (<= t_0 -1e+84) t_0 (if (<= t_0 2e-53) (- 0.0 z) t_0))))
double code(double x, double y, double z) {
double t_0 = y * (x * 3.0);
double tmp;
if (t_0 <= -1e+84) {
tmp = t_0;
} else if (t_0 <= 2e-53) {
tmp = 0.0 - 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 * 3.0d0)
if (t_0 <= (-1d+84)) then
tmp = t_0
else if (t_0 <= 2d-53) then
tmp = 0.0d0 - 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 * 3.0);
double tmp;
if (t_0 <= -1e+84) {
tmp = t_0;
} else if (t_0 <= 2e-53) {
tmp = 0.0 - z;
} else {
tmp = t_0;
}
return tmp;
}
def code(x, y, z): t_0 = y * (x * 3.0) tmp = 0 if t_0 <= -1e+84: tmp = t_0 elif t_0 <= 2e-53: tmp = 0.0 - z else: tmp = t_0 return tmp
function code(x, y, z) t_0 = Float64(y * Float64(x * 3.0)) tmp = 0.0 if (t_0 <= -1e+84) tmp = t_0; elseif (t_0 <= 2e-53) tmp = Float64(0.0 - z); else tmp = t_0; end return tmp end
function tmp_2 = code(x, y, z) t_0 = y * (x * 3.0); tmp = 0.0; if (t_0 <= -1e+84) tmp = t_0; elseif (t_0 <= 2e-53) tmp = 0.0 - z; else tmp = t_0; end tmp_2 = tmp; end
code[x_, y_, z_] := Block[{t$95$0 = N[(y * N[(x * 3.0), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[t$95$0, -1e+84], t$95$0, If[LessEqual[t$95$0, 2e-53], N[(0.0 - z), $MachinePrecision], t$95$0]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := y \cdot \left(x \cdot 3\right)\\
\mathbf{if}\;t\_0 \leq -1 \cdot 10^{+84}:\\
\;\;\;\;t\_0\\
\mathbf{elif}\;t\_0 \leq 2 \cdot 10^{-53}:\\
\;\;\;\;0 - z\\
\mathbf{else}:\\
\;\;\;\;t\_0\\
\end{array}
\end{array}
if (*.f64 (*.f64 x #s(literal 3 binary64)) y) < -1.00000000000000006e84 or 2.00000000000000006e-53 < (*.f64 (*.f64 x #s(literal 3 binary64)) y) Initial program 99.8%
Taylor expanded in x around inf
+-rgt-identityN/A
*-commutativeN/A
associate-*r*N/A
metadata-evalN/A
distribute-lft-neg-inN/A
*-commutativeN/A
accelerator-lowering-fma.f64N/A
distribute-lft-neg-inN/A
metadata-evalN/A
+-rgt-identityN/A
accelerator-lowering-fma.f6477.3%
Simplified77.3%
+-rgt-identityN/A
+-rgt-identityN/A
associate-*r*N/A
*-lowering-*.f64N/A
*-lowering-*.f6477.5%
Applied egg-rr77.5%
if -1.00000000000000006e84 < (*.f64 (*.f64 x #s(literal 3 binary64)) y) < 2.00000000000000006e-53Initial program 99.9%
Taylor expanded in x around 0
mul-1-negN/A
neg-sub0N/A
--lowering--.f6482.7%
Simplified82.7%
sub0-negN/A
+-lft-identityN/A
neg-lowering-neg.f64N/A
+-lft-identity82.7%
Applied egg-rr82.7%
Final simplification80.0%
(FPCore (x y z) :precision binary64 (- (* y (* x 3.0)) z))
double code(double x, double y, double z) {
return (y * (x * 3.0)) - 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 * 3.0d0)) - z
end function
public static double code(double x, double y, double z) {
return (y * (x * 3.0)) - z;
}
def code(x, y, z): return (y * (x * 3.0)) - z
function code(x, y, z) return Float64(Float64(y * Float64(x * 3.0)) - z) end
function tmp = code(x, y, z) tmp = (y * (x * 3.0)) - z; end
code[x_, y_, z_] := N[(N[(y * N[(x * 3.0), $MachinePrecision]), $MachinePrecision] - z), $MachinePrecision]
\begin{array}{l}
\\
y \cdot \left(x \cdot 3\right) - z
\end{array}
Initial program 99.8%
Final simplification99.8%
(FPCore (x y z) :precision binary64 (- (* x (* y 3.0)) z))
double code(double x, double y, double z) {
return (x * (y * 3.0)) - 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 * (y * 3.0d0)) - z
end function
public static double code(double x, double y, double z) {
return (x * (y * 3.0)) - z;
}
def code(x, y, z): return (x * (y * 3.0)) - z
function code(x, y, z) return Float64(Float64(x * Float64(y * 3.0)) - z) end
function tmp = code(x, y, z) tmp = (x * (y * 3.0)) - z; end
code[x_, y_, z_] := N[(N[(x * N[(y * 3.0), $MachinePrecision]), $MachinePrecision] - z), $MachinePrecision]
\begin{array}{l}
\\
x \cdot \left(y \cdot 3\right) - z
\end{array}
Initial program 99.8%
associate-*l*N/A
*-commutativeN/A
*-lowering-*.f64N/A
*-lowering-*.f6499.8%
Applied egg-rr99.8%
Final simplification99.8%
(FPCore (x y z) :precision binary64 (- 0.0 z))
double code(double x, double y, double z) {
return 0.0 - z;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
code = 0.0d0 - z
end function
public static double code(double x, double y, double z) {
return 0.0 - z;
}
def code(x, y, z): return 0.0 - z
function code(x, y, z) return Float64(0.0 - z) end
function tmp = code(x, y, z) tmp = 0.0 - z; end
code[x_, y_, z_] := N[(0.0 - z), $MachinePrecision]
\begin{array}{l}
\\
0 - z
\end{array}
Initial program 99.8%
Taylor expanded in x around 0
mul-1-negN/A
neg-sub0N/A
--lowering--.f6450.9%
Simplified50.9%
sub0-negN/A
+-lft-identityN/A
neg-lowering-neg.f64N/A
+-lft-identity50.9%
Applied egg-rr50.9%
Final simplification50.9%
(FPCore (x y z) :precision binary64 z)
double code(double x, double y, double z) {
return z;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
code = z
end function
public static double code(double x, double y, double z) {
return z;
}
def code(x, y, z): return z
function code(x, y, z) return z end
function tmp = code(x, y, z) tmp = z; end
code[x_, y_, z_] := z
\begin{array}{l}
\\
z
\end{array}
Initial program 99.8%
sub-negN/A
associate-*l*N/A
*-commutativeN/A
associate-*r*N/A
accelerator-lowering-fma.f64N/A
*-lowering-*.f64N/A
neg-sub0N/A
--lowering--.f6499.8%
Applied egg-rr99.8%
flip3--N/A
metadata-evalN/A
sub0-negN/A
cube-negN/A
sub0-negN/A
sqr-powN/A
pow-prod-downN/A
sub0-negN/A
+-lft-identityN/A
sub0-negN/A
+-lft-identityN/A
sqr-negN/A
pow-prod-downN/A
sqr-powN/A
+-lft-identityN/A
cube-multN/A
+-lft-identityN/A
metadata-evalN/A
+-lft-identityN/A
+-lft-identityN/A
+-lft-identityN/A
+-lft-identityN/A
distribute-rgt-outN/A
+-commutativeN/A
+-lft-identityN/A
Applied egg-rr49.0%
Taylor expanded in x around 0
Simplified2.4%
(FPCore (x y z) :precision binary64 (- (* x (* 3.0 y)) z))
double code(double x, double y, double z) {
return (x * (3.0 * 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 = (x * (3.0d0 * y)) - z
end function
public static double code(double x, double y, double z) {
return (x * (3.0 * y)) - z;
}
def code(x, y, z): return (x * (3.0 * y)) - z
function code(x, y, z) return Float64(Float64(x * Float64(3.0 * y)) - z) end
function tmp = code(x, y, z) tmp = (x * (3.0 * y)) - z; end
code[x_, y_, z_] := N[(N[(x * N[(3.0 * y), $MachinePrecision]), $MachinePrecision] - z), $MachinePrecision]
\begin{array}{l}
\\
x \cdot \left(3 \cdot y\right) - z
\end{array}
herbie shell --seed 2024193
(FPCore (x y z)
:name "Diagrams.Solve.Polynomial:cubForm from diagrams-solve-0.1, B"
:precision binary64
:alt
(! :herbie-platform default (- (* x (* 3 y)) z))
(- (* (* x 3.0) y) z))