
(FPCore (x y z) :precision binary64 (+ x (* (- y x) z)))
double code(double x, double y, double z) {
return 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 = x + ((y - x) * z)
end function
public static double code(double x, double y, double z) {
return x + ((y - x) * z);
}
def code(x, y, z): return x + ((y - x) * z)
function code(x, y, z) return Float64(x + Float64(Float64(y - x) * z)) end
function tmp = code(x, y, z) tmp = x + ((y - x) * z); end
code[x_, y_, z_] := N[(x + N[(N[(y - x), $MachinePrecision] * z), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x + \left(y - x\right) \cdot z
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 7 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y z) :precision binary64 (+ x (* (- y x) z)))
double code(double x, double y, double z) {
return 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 = x + ((y - x) * z)
end function
public static double code(double x, double y, double z) {
return x + ((y - x) * z);
}
def code(x, y, z): return x + ((y - x) * z)
function code(x, y, z) return Float64(x + Float64(Float64(y - x) * z)) end
function tmp = code(x, y, z) tmp = x + ((y - x) * z); end
code[x_, y_, z_] := N[(x + N[(N[(y - x), $MachinePrecision] * z), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x + \left(y - x\right) \cdot z
\end{array}
(FPCore (x y z) :precision binary64 (fma (- y x) z x))
double code(double x, double y, double z) {
return fma((y - x), z, x);
}
function code(x, y, z) return fma(Float64(y - x), z, x) end
code[x_, y_, z_] := N[(N[(y - x), $MachinePrecision] * z + x), $MachinePrecision]
\begin{array}{l}
\\
\mathsf{fma}\left(y - x, z, x\right)
\end{array}
Initial program 100.0%
+-commutative100.0%
fma-define100.0%
Simplified100.0%
(FPCore (x y z) :precision binary64 (if (or (<= z -1880000.0) (not (<= z 1.0))) (* (- y x) z) (+ x (* y z))))
double code(double x, double y, double z) {
double tmp;
if ((z <= -1880000.0) || !(z <= 1.0)) {
tmp = (y - x) * z;
} else {
tmp = x + (y * 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 ((z <= (-1880000.0d0)) .or. (.not. (z <= 1.0d0))) then
tmp = (y - x) * z
else
tmp = x + (y * z)
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if ((z <= -1880000.0) || !(z <= 1.0)) {
tmp = (y - x) * z;
} else {
tmp = x + (y * z);
}
return tmp;
}
def code(x, y, z): tmp = 0 if (z <= -1880000.0) or not (z <= 1.0): tmp = (y - x) * z else: tmp = x + (y * z) return tmp
function code(x, y, z) tmp = 0.0 if ((z <= -1880000.0) || !(z <= 1.0)) tmp = Float64(Float64(y - x) * z); else tmp = Float64(x + Float64(y * z)); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((z <= -1880000.0) || ~((z <= 1.0))) tmp = (y - x) * z; else tmp = x + (y * z); end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[z, -1880000.0], N[Not[LessEqual[z, 1.0]], $MachinePrecision]], N[(N[(y - x), $MachinePrecision] * z), $MachinePrecision], N[(x + N[(y * z), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -1880000 \lor \neg \left(z \leq 1\right):\\
\;\;\;\;\left(y - x\right) \cdot z\\
\mathbf{else}:\\
\;\;\;\;x + y \cdot z\\
\end{array}
\end{array}
if z < -1.88e6 or 1 < z Initial program 100.0%
Taylor expanded in z around inf 98.1%
if -1.88e6 < z < 1Initial program 100.0%
*-commutative100.0%
sub-neg100.0%
distribute-lft-in100.0%
Applied egg-rr100.0%
Taylor expanded in y around inf 98.4%
*-commutative98.4%
Simplified98.4%
Final simplification98.3%
(FPCore (x y z) :precision binary64 (if (or (<= y -5.6e+69) (not (<= y 3.8e+47))) (* (- y x) z) (* x (- 1.0 z))))
double code(double x, double y, double z) {
double tmp;
if ((y <= -5.6e+69) || !(y <= 3.8e+47)) {
tmp = (y - x) * z;
} else {
tmp = x * (1.0 - 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 ((y <= (-5.6d+69)) .or. (.not. (y <= 3.8d+47))) then
tmp = (y - x) * z
else
tmp = x * (1.0d0 - z)
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if ((y <= -5.6e+69) || !(y <= 3.8e+47)) {
tmp = (y - x) * z;
} else {
tmp = x * (1.0 - z);
}
return tmp;
}
def code(x, y, z): tmp = 0 if (y <= -5.6e+69) or not (y <= 3.8e+47): tmp = (y - x) * z else: tmp = x * (1.0 - z) return tmp
function code(x, y, z) tmp = 0.0 if ((y <= -5.6e+69) || !(y <= 3.8e+47)) tmp = Float64(Float64(y - x) * z); else tmp = Float64(x * Float64(1.0 - z)); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((y <= -5.6e+69) || ~((y <= 3.8e+47))) tmp = (y - x) * z; else tmp = x * (1.0 - z); end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[y, -5.6e+69], N[Not[LessEqual[y, 3.8e+47]], $MachinePrecision]], N[(N[(y - x), $MachinePrecision] * z), $MachinePrecision], N[(x * N[(1.0 - z), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -5.6 \cdot 10^{+69} \lor \neg \left(y \leq 3.8 \cdot 10^{+47}\right):\\
\;\;\;\;\left(y - x\right) \cdot z\\
\mathbf{else}:\\
\;\;\;\;x \cdot \left(1 - z\right)\\
\end{array}
\end{array}
if y < -5.59999999999999964e69 or 3.8000000000000003e47 < y Initial program 100.0%
Taylor expanded in z around inf 85.4%
if -5.59999999999999964e69 < y < 3.8000000000000003e47Initial program 100.0%
Taylor expanded in x around inf 88.8%
mul-1-neg88.8%
unsub-neg88.8%
Simplified88.8%
Final simplification87.4%
(FPCore (x y z) :precision binary64 (if (or (<= y -6.5e+70) (not (<= y 1e+74))) (* y z) (* x (- 1.0 z))))
double code(double x, double y, double z) {
double tmp;
if ((y <= -6.5e+70) || !(y <= 1e+74)) {
tmp = y * z;
} else {
tmp = x * (1.0 - 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 ((y <= (-6.5d+70)) .or. (.not. (y <= 1d+74))) then
tmp = y * z
else
tmp = x * (1.0d0 - z)
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if ((y <= -6.5e+70) || !(y <= 1e+74)) {
tmp = y * z;
} else {
tmp = x * (1.0 - z);
}
return tmp;
}
def code(x, y, z): tmp = 0 if (y <= -6.5e+70) or not (y <= 1e+74): tmp = y * z else: tmp = x * (1.0 - z) return tmp
function code(x, y, z) tmp = 0.0 if ((y <= -6.5e+70) || !(y <= 1e+74)) tmp = Float64(y * z); else tmp = Float64(x * Float64(1.0 - z)); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((y <= -6.5e+70) || ~((y <= 1e+74))) tmp = y * z; else tmp = x * (1.0 - z); end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[y, -6.5e+70], N[Not[LessEqual[y, 1e+74]], $MachinePrecision]], N[(y * z), $MachinePrecision], N[(x * N[(1.0 - z), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -6.5 \cdot 10^{+70} \lor \neg \left(y \leq 10^{+74}\right):\\
\;\;\;\;y \cdot z\\
\mathbf{else}:\\
\;\;\;\;x \cdot \left(1 - z\right)\\
\end{array}
\end{array}
if y < -6.49999999999999978e70 or 9.99999999999999952e73 < y Initial program 100.0%
Taylor expanded in x around 0 74.0%
if -6.49999999999999978e70 < y < 9.99999999999999952e73Initial program 100.0%
Taylor expanded in x around inf 88.0%
mul-1-neg88.0%
unsub-neg88.0%
Simplified88.0%
Final simplification82.7%
(FPCore (x y z) :precision binary64 (if (or (<= y -2.6e+66) (not (<= y 7.2e+47))) (* y z) x))
double code(double x, double y, double z) {
double tmp;
if ((y <= -2.6e+66) || !(y <= 7.2e+47)) {
tmp = y * z;
} else {
tmp = x;
}
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 ((y <= (-2.6d+66)) .or. (.not. (y <= 7.2d+47))) then
tmp = y * z
else
tmp = x
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if ((y <= -2.6e+66) || !(y <= 7.2e+47)) {
tmp = y * z;
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (y <= -2.6e+66) or not (y <= 7.2e+47): tmp = y * z else: tmp = x return tmp
function code(x, y, z) tmp = 0.0 if ((y <= -2.6e+66) || !(y <= 7.2e+47)) tmp = Float64(y * z); else tmp = x; end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((y <= -2.6e+66) || ~((y <= 7.2e+47))) tmp = y * z; else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[y, -2.6e+66], N[Not[LessEqual[y, 7.2e+47]], $MachinePrecision]], N[(y * z), $MachinePrecision], x]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -2.6 \cdot 10^{+66} \lor \neg \left(y \leq 7.2 \cdot 10^{+47}\right):\\
\;\;\;\;y \cdot z\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
if y < -2.60000000000000012e66 or 7.20000000000000015e47 < y Initial program 100.0%
Taylor expanded in x around 0 71.2%
if -2.60000000000000012e66 < y < 7.20000000000000015e47Initial program 100.0%
Taylor expanded in z around 0 48.5%
Final simplification57.8%
(FPCore (x y z) :precision binary64 (+ x (* (- y x) z)))
double code(double x, double y, double z) {
return 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 = x + ((y - x) * z)
end function
public static double code(double x, double y, double z) {
return x + ((y - x) * z);
}
def code(x, y, z): return x + ((y - x) * z)
function code(x, y, z) return Float64(x + Float64(Float64(y - x) * z)) end
function tmp = code(x, y, z) tmp = x + ((y - x) * z); end
code[x_, y_, z_] := N[(x + N[(N[(y - x), $MachinePrecision] * z), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x + \left(y - x\right) \cdot z
\end{array}
Initial program 100.0%
(FPCore (x y z) :precision binary64 x)
double code(double x, double y, double z) {
return x;
}
real(8) function code(x, y, z)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
code = x
end function
public static double code(double x, double y, double z) {
return x;
}
def code(x, y, z): return x
function code(x, y, z) return x end
function tmp = code(x, y, z) tmp = x; end
code[x_, y_, z_] := x
\begin{array}{l}
\\
x
\end{array}
Initial program 100.0%
Taylor expanded in z around 0 35.5%
herbie shell --seed 2024100
(FPCore (x y z)
:name "Diagrams.ThreeD.Shapes:frustum from diagrams-lib-1.3.0.3, B"
:precision binary64
(+ x (* (- y x) z)))