
(FPCore (x y z) :precision binary64 (+ (* x y) (* (- 1.0 x) z)))
double code(double x, double y, double z) {
return (x * y) + ((1.0 - 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 * y) + ((1.0d0 - x) * z)
end function
public static double code(double x, double y, double z) {
return (x * y) + ((1.0 - x) * z);
}
def code(x, y, z): return (x * y) + ((1.0 - x) * z)
function code(x, y, z) return Float64(Float64(x * y) + Float64(Float64(1.0 - x) * z)) end
function tmp = code(x, y, z) tmp = (x * y) + ((1.0 - x) * z); end
code[x_, y_, z_] := N[(N[(x * y), $MachinePrecision] + N[(N[(1.0 - x), $MachinePrecision] * z), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x \cdot y + \left(1 - x\right) \cdot z
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 5 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y z) :precision binary64 (+ (* x y) (* (- 1.0 x) z)))
double code(double x, double y, double z) {
return (x * y) + ((1.0 - 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 * y) + ((1.0d0 - x) * z)
end function
public static double code(double x, double y, double z) {
return (x * y) + ((1.0 - x) * z);
}
def code(x, y, z): return (x * y) + ((1.0 - x) * z)
function code(x, y, z) return Float64(Float64(x * y) + Float64(Float64(1.0 - x) * z)) end
function tmp = code(x, y, z) tmp = (x * y) + ((1.0 - x) * z); end
code[x_, y_, z_] := N[(N[(x * y), $MachinePrecision] + N[(N[(1.0 - x), $MachinePrecision] * z), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x \cdot y + \left(1 - x\right) \cdot z
\end{array}
(FPCore (x y z) :precision binary64 (- z (* x (- z y))))
double code(double x, double y, double z) {
return z - (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 = z - (x * (z - y))
end function
public static double code(double x, double y, double z) {
return z - (x * (z - y));
}
def code(x, y, z): return z - (x * (z - y))
function code(x, y, z) return Float64(z - Float64(x * Float64(z - y))) end
function tmp = code(x, y, z) tmp = z - (x * (z - y)); end
code[x_, y_, z_] := N[(z - N[(x * N[(z - y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
z - x \cdot \left(z - y\right)
\end{array}
Initial program 97.6%
+-commutative97.6%
remove-double-neg97.6%
distribute-rgt-neg-out97.6%
neg-sub097.6%
neg-sub097.6%
*-commutative97.6%
distribute-lft-neg-in97.6%
remove-double-neg97.6%
distribute-rgt-out--97.6%
*-lft-identity97.6%
associate-+l-97.6%
distribute-lft-out--100.0%
Simplified100.0%
(FPCore (x y z) :precision binary64 (if (or (<= x -21.0) (not (<= x 6.5e-11))) (* x (- y z)) (+ z (* x y))))
double code(double x, double y, double z) {
double tmp;
if ((x <= -21.0) || !(x <= 6.5e-11)) {
tmp = x * (y - z);
} else {
tmp = z + (x * y);
}
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 <= (-21.0d0)) .or. (.not. (x <= 6.5d-11))) then
tmp = x * (y - z)
else
tmp = z + (x * y)
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if ((x <= -21.0) || !(x <= 6.5e-11)) {
tmp = x * (y - z);
} else {
tmp = z + (x * y);
}
return tmp;
}
def code(x, y, z): tmp = 0 if (x <= -21.0) or not (x <= 6.5e-11): tmp = x * (y - z) else: tmp = z + (x * y) return tmp
function code(x, y, z) tmp = 0.0 if ((x <= -21.0) || !(x <= 6.5e-11)) tmp = Float64(x * Float64(y - z)); else tmp = Float64(z + Float64(x * y)); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((x <= -21.0) || ~((x <= 6.5e-11))) tmp = x * (y - z); else tmp = z + (x * y); end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[x, -21.0], N[Not[LessEqual[x, 6.5e-11]], $MachinePrecision]], N[(x * N[(y - z), $MachinePrecision]), $MachinePrecision], N[(z + N[(x * y), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -21 \lor \neg \left(x \leq 6.5 \cdot 10^{-11}\right):\\
\;\;\;\;x \cdot \left(y - z\right)\\
\mathbf{else}:\\
\;\;\;\;z + x \cdot y\\
\end{array}
\end{array}
if x < -21 or 6.49999999999999953e-11 < x Initial program 95.1%
Taylor expanded in x around inf 99.1%
neg-mul-199.1%
sub-neg99.1%
Simplified99.1%
if -21 < x < 6.49999999999999953e-11Initial program 100.0%
Taylor expanded in x around 0 98.4%
Final simplification98.7%
(FPCore (x y z) :precision binary64 (if (or (<= x -9e-12) (not (<= x 4.2e-32))) (* x (- y z)) z))
double code(double x, double y, double z) {
double tmp;
if ((x <= -9e-12) || !(x <= 4.2e-32)) {
tmp = x * (y - z);
} else {
tmp = 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 <= (-9d-12)) .or. (.not. (x <= 4.2d-32))) then
tmp = x * (y - z)
else
tmp = z
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if ((x <= -9e-12) || !(x <= 4.2e-32)) {
tmp = x * (y - z);
} else {
tmp = z;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (x <= -9e-12) or not (x <= 4.2e-32): tmp = x * (y - z) else: tmp = z return tmp
function code(x, y, z) tmp = 0.0 if ((x <= -9e-12) || !(x <= 4.2e-32)) tmp = Float64(x * Float64(y - z)); else tmp = z; end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((x <= -9e-12) || ~((x <= 4.2e-32))) tmp = x * (y - z); else tmp = z; end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[x, -9e-12], N[Not[LessEqual[x, 4.2e-32]], $MachinePrecision]], N[(x * N[(y - z), $MachinePrecision]), $MachinePrecision], z]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -9 \cdot 10^{-12} \lor \neg \left(x \leq 4.2 \cdot 10^{-32}\right):\\
\;\;\;\;x \cdot \left(y - z\right)\\
\mathbf{else}:\\
\;\;\;\;z\\
\end{array}
\end{array}
if x < -8.99999999999999962e-12 or 4.1999999999999998e-32 < x Initial program 95.5%
Taylor expanded in x around inf 95.8%
neg-mul-195.8%
sub-neg95.8%
Simplified95.8%
if -8.99999999999999962e-12 < x < 4.1999999999999998e-32Initial program 100.0%
Taylor expanded in x around 0 99.8%
Taylor expanded in x around 0 79.0%
Final simplification87.8%
(FPCore (x y z) :precision binary64 (if (or (<= x -1.55e-11) (not (<= x 1.48e-31))) (* x y) z))
double code(double x, double y, double z) {
double tmp;
if ((x <= -1.55e-11) || !(x <= 1.48e-31)) {
tmp = x * y;
} else {
tmp = 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 <= (-1.55d-11)) .or. (.not. (x <= 1.48d-31))) then
tmp = x * y
else
tmp = z
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if ((x <= -1.55e-11) || !(x <= 1.48e-31)) {
tmp = x * y;
} else {
tmp = z;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (x <= -1.55e-11) or not (x <= 1.48e-31): tmp = x * y else: tmp = z return tmp
function code(x, y, z) tmp = 0.0 if ((x <= -1.55e-11) || !(x <= 1.48e-31)) tmp = Float64(x * y); else tmp = z; end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((x <= -1.55e-11) || ~((x <= 1.48e-31))) tmp = x * y; else tmp = z; end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[x, -1.55e-11], N[Not[LessEqual[x, 1.48e-31]], $MachinePrecision]], N[(x * y), $MachinePrecision], z]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -1.55 \cdot 10^{-11} \lor \neg \left(x \leq 1.48 \cdot 10^{-31}\right):\\
\;\;\;\;x \cdot y\\
\mathbf{else}:\\
\;\;\;\;z\\
\end{array}
\end{array}
if x < -1.55000000000000014e-11 or 1.48e-31 < x Initial program 95.5%
Taylor expanded in y around inf 58.5%
if -1.55000000000000014e-11 < x < 1.48e-31Initial program 100.0%
Taylor expanded in x around 0 99.8%
Taylor expanded in x around 0 79.0%
Final simplification68.2%
(FPCore (x y z) :precision binary64 z)
double code(double x, double y, double z) {
return z;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
code = z
end function
public static double code(double x, double y, double z) {
return z;
}
def code(x, y, z): return z
function code(x, y, z) return z end
function tmp = code(x, y, z) tmp = z; end
code[x_, y_, z_] := z
\begin{array}{l}
\\
z
\end{array}
Initial program 97.6%
Taylor expanded in x around 0 79.4%
Taylor expanded in x around 0 40.1%
herbie shell --seed 2024123
(FPCore (x y z)
:name "Diagrams.Backend.Rasterific:$crender from diagrams-rasterific-1.3.1.3"
:precision binary64
(+ (* x y) (* (- 1.0 x) z)))