
(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}
NOTE: x, y, and z should be sorted in increasing order before calling this function. (FPCore (x y z) :precision binary64 (- (* (* y 3.0) x) z))
assert(x < y && y < z);
double code(double x, double y, double z) {
return ((y * 3.0) * x) - z;
}
NOTE: x, y, and z should be sorted in increasing order before calling this function.
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
code = ((y * 3.0d0) * x) - z
end function
assert x < y && y < z;
public static double code(double x, double y, double z) {
return ((y * 3.0) * x) - z;
}
[x, y, z] = sort([x, y, z]) def code(x, y, z): return ((y * 3.0) * x) - z
x, y, z = sort([x, y, z]) function code(x, y, z) return Float64(Float64(Float64(y * 3.0) * x) - z) end
x, y, z = num2cell(sort([x, y, z])){:}
function tmp = code(x, y, z)
tmp = ((y * 3.0) * x) - z;
end
NOTE: x, y, and z should be sorted in increasing order before calling this function. code[x_, y_, z_] := N[(N[(N[(y * 3.0), $MachinePrecision] * x), $MachinePrecision] - z), $MachinePrecision]
\begin{array}{l}
[x, y, z] = \mathsf{sort}([x, y, z])\\
\\
\left(y \cdot 3\right) \cdot x - z
\end{array}
Initial program 99.9%
lift-*.f64N/A
lift-*.f64N/A
associate-*l*N/A
*-commutativeN/A
lower-*.f64N/A
*-commutativeN/A
lower-*.f6499.8
Applied rewrites99.8%
NOTE: x, y, and z should be sorted in increasing order before calling this function. (FPCore (x y z) :precision binary64 (let* ((t_0 (* (* x 3.0) y))) (if (or (<= t_0 -1e-73) (not (<= t_0 1e+73))) (* (* 3.0 y) x) (- z))))
assert(x < y && y < z);
double code(double x, double y, double z) {
double t_0 = (x * 3.0) * y;
double tmp;
if ((t_0 <= -1e-73) || !(t_0 <= 1e+73)) {
tmp = (3.0 * y) * x;
} else {
tmp = -z;
}
return tmp;
}
NOTE: x, y, and z should be sorted in increasing order before calling this function.
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 * 3.0d0) * y
if ((t_0 <= (-1d-73)) .or. (.not. (t_0 <= 1d+73))) then
tmp = (3.0d0 * y) * x
else
tmp = -z
end if
code = tmp
end function
assert x < y && y < z;
public static double code(double x, double y, double z) {
double t_0 = (x * 3.0) * y;
double tmp;
if ((t_0 <= -1e-73) || !(t_0 <= 1e+73)) {
tmp = (3.0 * y) * x;
} else {
tmp = -z;
}
return tmp;
}
[x, y, z] = sort([x, y, z]) def code(x, y, z): t_0 = (x * 3.0) * y tmp = 0 if (t_0 <= -1e-73) or not (t_0 <= 1e+73): tmp = (3.0 * y) * x else: tmp = -z return tmp
x, y, z = sort([x, y, z]) function code(x, y, z) t_0 = Float64(Float64(x * 3.0) * y) tmp = 0.0 if ((t_0 <= -1e-73) || !(t_0 <= 1e+73)) tmp = Float64(Float64(3.0 * y) * x); else tmp = Float64(-z); end return tmp end
x, y, z = num2cell(sort([x, y, z])){:}
function tmp_2 = code(x, y, z)
t_0 = (x * 3.0) * y;
tmp = 0.0;
if ((t_0 <= -1e-73) || ~((t_0 <= 1e+73)))
tmp = (3.0 * y) * x;
else
tmp = -z;
end
tmp_2 = tmp;
end
NOTE: x, y, and z should be sorted in increasing order before calling this function.
code[x_, y_, z_] := Block[{t$95$0 = N[(N[(x * 3.0), $MachinePrecision] * y), $MachinePrecision]}, If[Or[LessEqual[t$95$0, -1e-73], N[Not[LessEqual[t$95$0, 1e+73]], $MachinePrecision]], N[(N[(3.0 * y), $MachinePrecision] * x), $MachinePrecision], (-z)]]
\begin{array}{l}
[x, y, z] = \mathsf{sort}([x, y, z])\\
\\
\begin{array}{l}
t_0 := \left(x \cdot 3\right) \cdot y\\
\mathbf{if}\;t\_0 \leq -1 \cdot 10^{-73} \lor \neg \left(t\_0 \leq 10^{+73}\right):\\
\;\;\;\;\left(3 \cdot y\right) \cdot x\\
\mathbf{else}:\\
\;\;\;\;-z\\
\end{array}
\end{array}
if (*.f64 (*.f64 x #s(literal 3 binary64)) y) < -9.99999999999999997e-74 or 9.99999999999999983e72 < (*.f64 (*.f64 x #s(literal 3 binary64)) y) Initial program 99.9%
Applied rewrites99.7%
Taylor expanded in x around inf
lower-*.f64N/A
lower-*.f6483.7
Applied rewrites83.7%
Taylor expanded in x around inf
*-commutativeN/A
lower-*.f64N/A
lower-*.f6483.7
Applied rewrites83.7%
Applied rewrites83.8%
if -9.99999999999999997e-74 < (*.f64 (*.f64 x #s(literal 3 binary64)) y) < 9.99999999999999983e72Initial program 100.0%
Taylor expanded in x around 0
mul-1-negN/A
lower-neg.f6484.2
Applied rewrites84.2%
Final simplification84.0%
NOTE: x, y, and z should be sorted in increasing order before calling this function.
(FPCore (x y z)
:precision binary64
(let* ((t_0 (* (* x 3.0) y)))
(if (<= t_0 -1e-73)
(* (* 3.0 x) y)
(if (<= t_0 1e+73) (- z) (* (* 3.0 y) x)))))assert(x < y && y < z);
double code(double x, double y, double z) {
double t_0 = (x * 3.0) * y;
double tmp;
if (t_0 <= -1e-73) {
tmp = (3.0 * x) * y;
} else if (t_0 <= 1e+73) {
tmp = -z;
} else {
tmp = (3.0 * y) * x;
}
return tmp;
}
NOTE: x, y, and z should be sorted in increasing order before calling this function.
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 * 3.0d0) * y
if (t_0 <= (-1d-73)) then
tmp = (3.0d0 * x) * y
else if (t_0 <= 1d+73) then
tmp = -z
else
tmp = (3.0d0 * y) * x
end if
code = tmp
end function
assert x < y && y < z;
public static double code(double x, double y, double z) {
double t_0 = (x * 3.0) * y;
double tmp;
if (t_0 <= -1e-73) {
tmp = (3.0 * x) * y;
} else if (t_0 <= 1e+73) {
tmp = -z;
} else {
tmp = (3.0 * y) * x;
}
return tmp;
}
[x, y, z] = sort([x, y, z]) def code(x, y, z): t_0 = (x * 3.0) * y tmp = 0 if t_0 <= -1e-73: tmp = (3.0 * x) * y elif t_0 <= 1e+73: tmp = -z else: tmp = (3.0 * y) * x return tmp
x, y, z = sort([x, y, z]) function code(x, y, z) t_0 = Float64(Float64(x * 3.0) * y) tmp = 0.0 if (t_0 <= -1e-73) tmp = Float64(Float64(3.0 * x) * y); elseif (t_0 <= 1e+73) tmp = Float64(-z); else tmp = Float64(Float64(3.0 * y) * x); end return tmp end
x, y, z = num2cell(sort([x, y, z])){:}
function tmp_2 = code(x, y, z)
t_0 = (x * 3.0) * y;
tmp = 0.0;
if (t_0 <= -1e-73)
tmp = (3.0 * x) * y;
elseif (t_0 <= 1e+73)
tmp = -z;
else
tmp = (3.0 * y) * x;
end
tmp_2 = tmp;
end
NOTE: x, y, and z should be sorted in increasing order before calling this function.
code[x_, y_, z_] := Block[{t$95$0 = N[(N[(x * 3.0), $MachinePrecision] * y), $MachinePrecision]}, If[LessEqual[t$95$0, -1e-73], N[(N[(3.0 * x), $MachinePrecision] * y), $MachinePrecision], If[LessEqual[t$95$0, 1e+73], (-z), N[(N[(3.0 * y), $MachinePrecision] * x), $MachinePrecision]]]]
\begin{array}{l}
[x, y, z] = \mathsf{sort}([x, y, z])\\
\\
\begin{array}{l}
t_0 := \left(x \cdot 3\right) \cdot y\\
\mathbf{if}\;t\_0 \leq -1 \cdot 10^{-73}:\\
\;\;\;\;\left(3 \cdot x\right) \cdot y\\
\mathbf{elif}\;t\_0 \leq 10^{+73}:\\
\;\;\;\;-z\\
\mathbf{else}:\\
\;\;\;\;\left(3 \cdot y\right) \cdot x\\
\end{array}
\end{array}
if (*.f64 (*.f64 x #s(literal 3 binary64)) y) < -9.99999999999999997e-74Initial program 99.9%
Applied rewrites99.7%
Taylor expanded in x around inf
lower-*.f64N/A
lower-*.f6478.9
Applied rewrites78.9%
Taylor expanded in x around inf
*-commutativeN/A
lower-*.f64N/A
lower-*.f6478.9
Applied rewrites78.9%
Applied rewrites79.2%
if -9.99999999999999997e-74 < (*.f64 (*.f64 x #s(literal 3 binary64)) y) < 9.99999999999999983e72Initial program 100.0%
Taylor expanded in x around 0
mul-1-negN/A
lower-neg.f6484.2
Applied rewrites84.2%
if 9.99999999999999983e72 < (*.f64 (*.f64 x #s(literal 3 binary64)) y) Initial program 99.9%
Applied rewrites99.7%
Taylor expanded in x around inf
lower-*.f64N/A
lower-*.f6491.8
Applied rewrites91.8%
Taylor expanded in x around inf
*-commutativeN/A
lower-*.f64N/A
lower-*.f6491.8
Applied rewrites91.8%
Applied rewrites91.8%
NOTE: x, y, and z should be sorted in increasing order before calling this function. (FPCore (x y z) :precision binary64 (- (* (* x 3.0) y) z))
assert(x < y && y < z);
double code(double x, double y, double z) {
return ((x * 3.0) * y) - z;
}
NOTE: x, y, and z should be sorted in increasing order before calling this function.
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
assert x < y && y < z;
public static double code(double x, double y, double z) {
return ((x * 3.0) * y) - z;
}
[x, y, z] = sort([x, y, z]) def code(x, y, z): return ((x * 3.0) * y) - z
x, y, z = sort([x, y, z]) function code(x, y, z) return Float64(Float64(Float64(x * 3.0) * y) - z) end
x, y, z = num2cell(sort([x, y, z])){:}
function tmp = code(x, y, z)
tmp = ((x * 3.0) * y) - z;
end
NOTE: x, y, and z should be sorted in increasing order before calling this function. code[x_, y_, z_] := N[(N[(N[(x * 3.0), $MachinePrecision] * y), $MachinePrecision] - z), $MachinePrecision]
\begin{array}{l}
[x, y, z] = \mathsf{sort}([x, y, z])\\
\\
\left(x \cdot 3\right) \cdot y - z
\end{array}
Initial program 99.9%
NOTE: x, y, and z should be sorted in increasing order before calling this function. (FPCore (x y z) :precision binary64 (- (fma -3.0 (* y x) z)))
assert(x < y && y < z);
double code(double x, double y, double z) {
return -fma(-3.0, (y * x), z);
}
x, y, z = sort([x, y, z]) function code(x, y, z) return Float64(-fma(-3.0, Float64(y * x), z)) end
NOTE: x, y, and z should be sorted in increasing order before calling this function. code[x_, y_, z_] := (-N[(-3.0 * N[(y * x), $MachinePrecision] + z), $MachinePrecision])
\begin{array}{l}
[x, y, z] = \mathsf{sort}([x, y, z])\\
\\
-\mathsf{fma}\left(-3, y \cdot x, z\right)
\end{array}
Initial program 99.9%
Applied rewrites99.8%
NOTE: x, y, and z should be sorted in increasing order before calling this function. (FPCore (x y z) :precision binary64 (- z))
assert(x < y && y < z);
double code(double x, double y, double z) {
return -z;
}
NOTE: x, y, and z should be sorted in increasing order before calling this function.
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
assert x < y && y < z;
public static double code(double x, double y, double z) {
return -z;
}
[x, y, z] = sort([x, y, z]) def code(x, y, z): return -z
x, y, z = sort([x, y, z]) function code(x, y, z) return Float64(-z) end
x, y, z = num2cell(sort([x, y, z])){:}
function tmp = code(x, y, z)
tmp = -z;
end
NOTE: x, y, and z should be sorted in increasing order before calling this function. code[x_, y_, z_] := (-z)
\begin{array}{l}
[x, y, z] = \mathsf{sort}([x, y, z])\\
\\
-z
\end{array}
Initial program 99.9%
Taylor expanded in x around 0
mul-1-negN/A
lower-neg.f6450.5
Applied rewrites50.5%
(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 2024332
(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))