
(FPCore (x y z) :precision binary64 (+ (* x (+ y z)) (* z 5.0)))
double code(double x, double y, double z) {
return (x * (y + z)) + (z * 5.0);
}
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)) + (z * 5.0d0)
end function
public static double code(double x, double y, double z) {
return (x * (y + z)) + (z * 5.0);
}
def code(x, y, z): return (x * (y + z)) + (z * 5.0)
function code(x, y, z) return Float64(Float64(x * Float64(y + z)) + Float64(z * 5.0)) end
function tmp = code(x, y, z) tmp = (x * (y + z)) + (z * 5.0); end
code[x_, y_, z_] := N[(N[(x * N[(y + z), $MachinePrecision]), $MachinePrecision] + N[(z * 5.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x \cdot \left(y + z\right) + z \cdot 5
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 6 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y z) :precision binary64 (+ (* x (+ y z)) (* z 5.0)))
double code(double x, double y, double z) {
return (x * (y + z)) + (z * 5.0);
}
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)) + (z * 5.0d0)
end function
public static double code(double x, double y, double z) {
return (x * (y + z)) + (z * 5.0);
}
def code(x, y, z): return (x * (y + z)) + (z * 5.0)
function code(x, y, z) return Float64(Float64(x * Float64(y + z)) + Float64(z * 5.0)) end
function tmp = code(x, y, z) tmp = (x * (y + z)) + (z * 5.0); end
code[x_, y_, z_] := N[(N[(x * N[(y + z), $MachinePrecision]), $MachinePrecision] + N[(z * 5.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x \cdot \left(y + z\right) + z \cdot 5
\end{array}
(FPCore (x y z) :precision binary64 (fma z 5.0 (* (+ z y) x)))
double code(double x, double y, double z) {
return fma(z, 5.0, ((z + y) * x));
}
function code(x, y, z) return fma(z, 5.0, Float64(Float64(z + y) * x)) end
code[x_, y_, z_] := N[(z * 5.0 + N[(N[(z + y), $MachinePrecision] * x), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\mathsf{fma}\left(z, 5, \left(z + y\right) \cdot x\right)
\end{array}
Initial program 99.9%
lift-+.f64N/A
+-commutativeN/A
lift-*.f64N/A
lower-fma.f64100.0
lift-*.f64N/A
*-commutativeN/A
lower-*.f64100.0
lift-+.f64N/A
+-commutativeN/A
lower-+.f64100.0
Applied rewrites100.0%
(FPCore (x y z) :precision binary64 (if (<= x -5.4e+16) (* x z) (if (or (<= x -3.2e-23) (not (<= x 3.2e-29))) (* y x) (* 5.0 z))))
double code(double x, double y, double z) {
double tmp;
if (x <= -5.4e+16) {
tmp = x * z;
} else if ((x <= -3.2e-23) || !(x <= 3.2e-29)) {
tmp = y * x;
} else {
tmp = 5.0 * z;
}
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) :: tmp
if (x <= (-5.4d+16)) then
tmp = x * z
else if ((x <= (-3.2d-23)) .or. (.not. (x <= 3.2d-29))) then
tmp = y * x
else
tmp = 5.0d0 * z
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if (x <= -5.4e+16) {
tmp = x * z;
} else if ((x <= -3.2e-23) || !(x <= 3.2e-29)) {
tmp = y * x;
} else {
tmp = 5.0 * z;
}
return tmp;
}
def code(x, y, z): tmp = 0 if x <= -5.4e+16: tmp = x * z elif (x <= -3.2e-23) or not (x <= 3.2e-29): tmp = y * x else: tmp = 5.0 * z return tmp
function code(x, y, z) tmp = 0.0 if (x <= -5.4e+16) tmp = Float64(x * z); elseif ((x <= -3.2e-23) || !(x <= 3.2e-29)) tmp = Float64(y * x); else tmp = Float64(5.0 * z); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (x <= -5.4e+16) tmp = x * z; elseif ((x <= -3.2e-23) || ~((x <= 3.2e-29))) tmp = y * x; else tmp = 5.0 * z; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[x, -5.4e+16], N[(x * z), $MachinePrecision], If[Or[LessEqual[x, -3.2e-23], N[Not[LessEqual[x, 3.2e-29]], $MachinePrecision]], N[(y * x), $MachinePrecision], N[(5.0 * z), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -5.4 \cdot 10^{+16}:\\
\;\;\;\;x \cdot z\\
\mathbf{elif}\;x \leq -3.2 \cdot 10^{-23} \lor \neg \left(x \leq 3.2 \cdot 10^{-29}\right):\\
\;\;\;\;y \cdot x\\
\mathbf{else}:\\
\;\;\;\;5 \cdot z\\
\end{array}
\end{array}
if x < -5.4e16Initial program 100.0%
Taylor expanded in y around 0
distribute-rgt-inN/A
*-commutativeN/A
lower-*.f64N/A
+-commutativeN/A
metadata-evalN/A
sub-negN/A
lower--.f6464.4
Applied rewrites64.4%
Taylor expanded in x around inf
Applied rewrites64.4%
if -5.4e16 < x < -3.19999999999999976e-23 or 3.2e-29 < x Initial program 100.0%
Taylor expanded in y around inf
*-commutativeN/A
lower-*.f6462.5
Applied rewrites62.5%
if -3.19999999999999976e-23 < x < 3.2e-29Initial program 99.9%
Taylor expanded in x around 0
lower-*.f6476.8
Applied rewrites76.8%
Final simplification69.5%
(FPCore (x y z) :precision binary64 (if (or (<= x -3.2e-23) (not (<= x 3.2e-62))) (* (+ y z) x) (fma z 5.0 (* x z))))
double code(double x, double y, double z) {
double tmp;
if ((x <= -3.2e-23) || !(x <= 3.2e-62)) {
tmp = (y + z) * x;
} else {
tmp = fma(z, 5.0, (x * z));
}
return tmp;
}
function code(x, y, z) tmp = 0.0 if ((x <= -3.2e-23) || !(x <= 3.2e-62)) tmp = Float64(Float64(y + z) * x); else tmp = fma(z, 5.0, Float64(x * z)); end return tmp end
code[x_, y_, z_] := If[Or[LessEqual[x, -3.2e-23], N[Not[LessEqual[x, 3.2e-62]], $MachinePrecision]], N[(N[(y + z), $MachinePrecision] * x), $MachinePrecision], N[(z * 5.0 + N[(x * z), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -3.2 \cdot 10^{-23} \lor \neg \left(x \leq 3.2 \cdot 10^{-62}\right):\\
\;\;\;\;\left(y + z\right) \cdot x\\
\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(z, 5, x \cdot z\right)\\
\end{array}
\end{array}
if x < -3.19999999999999976e-23 or 3.20000000000000021e-62 < x Initial program 100.0%
Taylor expanded in y around 0
distribute-rgt-inN/A
*-commutativeN/A
lower-*.f64N/A
+-commutativeN/A
metadata-evalN/A
sub-negN/A
lower--.f6453.0
Applied rewrites53.0%
Applied rewrites53.0%
Taylor expanded in x around inf
*-commutativeN/A
lower-*.f64N/A
lower-+.f6495.2
Applied rewrites95.2%
if -3.19999999999999976e-23 < x < 3.20000000000000021e-62Initial program 99.9%
Taylor expanded in y around 0
distribute-rgt-inN/A
*-commutativeN/A
lower-*.f64N/A
+-commutativeN/A
metadata-evalN/A
sub-negN/A
lower--.f6478.1
Applied rewrites78.1%
Applied rewrites78.2%
Final simplification87.9%
(FPCore (x y z) :precision binary64 (if (or (<= x -3.2e-23) (not (<= x 3.2e-62))) (* (+ y z) x) (* 5.0 z)))
double code(double x, double y, double z) {
double tmp;
if ((x <= -3.2e-23) || !(x <= 3.2e-62)) {
tmp = (y + z) * x;
} else {
tmp = 5.0 * z;
}
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) :: tmp
if ((x <= (-3.2d-23)) .or. (.not. (x <= 3.2d-62))) then
tmp = (y + z) * x
else
tmp = 5.0d0 * z
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if ((x <= -3.2e-23) || !(x <= 3.2e-62)) {
tmp = (y + z) * x;
} else {
tmp = 5.0 * z;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (x <= -3.2e-23) or not (x <= 3.2e-62): tmp = (y + z) * x else: tmp = 5.0 * z return tmp
function code(x, y, z) tmp = 0.0 if ((x <= -3.2e-23) || !(x <= 3.2e-62)) tmp = Float64(Float64(y + z) * x); else tmp = Float64(5.0 * z); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((x <= -3.2e-23) || ~((x <= 3.2e-62))) tmp = (y + z) * x; else tmp = 5.0 * z; end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[x, -3.2e-23], N[Not[LessEqual[x, 3.2e-62]], $MachinePrecision]], N[(N[(y + z), $MachinePrecision] * x), $MachinePrecision], N[(5.0 * z), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -3.2 \cdot 10^{-23} \lor \neg \left(x \leq 3.2 \cdot 10^{-62}\right):\\
\;\;\;\;\left(y + z\right) \cdot x\\
\mathbf{else}:\\
\;\;\;\;5 \cdot z\\
\end{array}
\end{array}
if x < -3.19999999999999976e-23 or 3.20000000000000021e-62 < x Initial program 100.0%
Taylor expanded in y around 0
distribute-rgt-inN/A
*-commutativeN/A
lower-*.f64N/A
+-commutativeN/A
metadata-evalN/A
sub-negN/A
lower--.f6453.0
Applied rewrites53.0%
Applied rewrites53.0%
Taylor expanded in x around inf
*-commutativeN/A
lower-*.f64N/A
lower-+.f6495.2
Applied rewrites95.2%
if -3.19999999999999976e-23 < x < 3.20000000000000021e-62Initial program 99.9%
Taylor expanded in x around 0
lower-*.f6478.1
Applied rewrites78.1%
Final simplification87.8%
(FPCore (x y z) :precision binary64 (if (or (<= x -0.23) (not (<= x 0.92))) (* x z) (* 5.0 z)))
double code(double x, double y, double z) {
double tmp;
if ((x <= -0.23) || !(x <= 0.92)) {
tmp = x * z;
} else {
tmp = 5.0 * z;
}
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) :: tmp
if ((x <= (-0.23d0)) .or. (.not. (x <= 0.92d0))) then
tmp = x * z
else
tmp = 5.0d0 * z
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if ((x <= -0.23) || !(x <= 0.92)) {
tmp = x * z;
} else {
tmp = 5.0 * z;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (x <= -0.23) or not (x <= 0.92): tmp = x * z else: tmp = 5.0 * z return tmp
function code(x, y, z) tmp = 0.0 if ((x <= -0.23) || !(x <= 0.92)) tmp = Float64(x * z); else tmp = Float64(5.0 * z); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((x <= -0.23) || ~((x <= 0.92))) tmp = x * z; else tmp = 5.0 * z; end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[x, -0.23], N[Not[LessEqual[x, 0.92]], $MachinePrecision]], N[(x * z), $MachinePrecision], N[(5.0 * z), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -0.23 \lor \neg \left(x \leq 0.92\right):\\
\;\;\;\;x \cdot z\\
\mathbf{else}:\\
\;\;\;\;5 \cdot z\\
\end{array}
\end{array}
if x < -0.23000000000000001 or 0.92000000000000004 < x Initial program 100.0%
Taylor expanded in y around 0
distribute-rgt-inN/A
*-commutativeN/A
lower-*.f64N/A
+-commutativeN/A
metadata-evalN/A
sub-negN/A
lower--.f6455.5
Applied rewrites55.5%
Taylor expanded in x around inf
Applied rewrites55.1%
if -0.23000000000000001 < x < 0.92000000000000004Initial program 99.9%
Taylor expanded in x around 0
lower-*.f6471.0
Applied rewrites71.0%
Final simplification63.2%
(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 99.9%
Taylor expanded in y around 0
distribute-rgt-inN/A
*-commutativeN/A
lower-*.f64N/A
+-commutativeN/A
metadata-evalN/A
sub-negN/A
lower--.f6463.8
Applied rewrites63.8%
Taylor expanded in x around inf
Applied rewrites29.1%
(FPCore (x y z) :precision binary64 (+ (* (+ x 5.0) z) (* x y)))
double code(double x, double y, double z) {
return ((x + 5.0) * 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 = ((x + 5.0d0) * z) + (x * y)
end function
public static double code(double x, double y, double z) {
return ((x + 5.0) * z) + (x * y);
}
def code(x, y, z): return ((x + 5.0) * z) + (x * y)
function code(x, y, z) return Float64(Float64(Float64(x + 5.0) * z) + Float64(x * y)) end
function tmp = code(x, y, z) tmp = ((x + 5.0) * z) + (x * y); end
code[x_, y_, z_] := N[(N[(N[(x + 5.0), $MachinePrecision] * z), $MachinePrecision] + N[(x * y), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\left(x + 5\right) \cdot z + x \cdot y
\end{array}
herbie shell --seed 2024324
(FPCore (x y z)
:name "Graphics.Rendering.Plot.Render.Plot.Legend:renderLegendOutside from plot-0.2.3.4, C"
:precision binary64
:alt
(! :herbie-platform default (+ (* (+ x 5) z) (* x y)))
(+ (* x (+ y z)) (* z 5.0)))