
(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 6 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 (+ 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 (let* ((t_0 (* (- y x) z))) (if (<= z -1.0) t_0 (if (<= z 1.0) (+ x (* y z)) t_0))))
double code(double x, double y, double z) {
double t_0 = (y - x) * z;
double tmp;
if (z <= -1.0) {
tmp = t_0;
} else if (z <= 1.0) {
tmp = x + (y * 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) * z
if (z <= (-1.0d0)) then
tmp = t_0
else if (z <= 1.0d0) then
tmp = x + (y * 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) * z;
double tmp;
if (z <= -1.0) {
tmp = t_0;
} else if (z <= 1.0) {
tmp = x + (y * z);
} else {
tmp = t_0;
}
return tmp;
}
def code(x, y, z): t_0 = (y - x) * z tmp = 0 if z <= -1.0: tmp = t_0 elif z <= 1.0: tmp = x + (y * z) else: tmp = t_0 return tmp
function code(x, y, z) t_0 = Float64(Float64(y - x) * z) tmp = 0.0 if (z <= -1.0) tmp = t_0; elseif (z <= 1.0) tmp = Float64(x + Float64(y * z)); else tmp = t_0; end return tmp end
function tmp_2 = code(x, y, z) t_0 = (y - x) * z; tmp = 0.0; if (z <= -1.0) tmp = t_0; elseif (z <= 1.0) tmp = x + (y * z); else tmp = t_0; end tmp_2 = tmp; end
code[x_, y_, z_] := Block[{t$95$0 = N[(N[(y - x), $MachinePrecision] * z), $MachinePrecision]}, If[LessEqual[z, -1.0], t$95$0, If[LessEqual[z, 1.0], N[(x + N[(y * z), $MachinePrecision]), $MachinePrecision], t$95$0]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := \left(y - x\right) \cdot z\\
\mathbf{if}\;z \leq -1:\\
\;\;\;\;t\_0\\
\mathbf{elif}\;z \leq 1:\\
\;\;\;\;x + y \cdot z\\
\mathbf{else}:\\
\;\;\;\;t\_0\\
\end{array}
\end{array}
if z < -1 or 1 < z Initial program 100.0%
Taylor expanded in z around inf
*-lowering-*.f64N/A
--lowering--.f6498.5%
Simplified98.5%
if -1 < z < 1Initial program 100.0%
Taylor expanded in y around inf
*-lowering-*.f6499.6%
Simplified99.6%
Final simplification99.0%
(FPCore (x y z) :precision binary64 (let* ((t_0 (* (- y x) z))) (if (<= z -9.1e-20) t_0 (if (<= z 245.0) (* x (- 1.0 z)) t_0))))
double code(double x, double y, double z) {
double t_0 = (y - x) * z;
double tmp;
if (z <= -9.1e-20) {
tmp = t_0;
} else if (z <= 245.0) {
tmp = x * (1.0 - 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) * z
if (z <= (-9.1d-20)) then
tmp = t_0
else if (z <= 245.0d0) then
tmp = x * (1.0d0 - 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) * z;
double tmp;
if (z <= -9.1e-20) {
tmp = t_0;
} else if (z <= 245.0) {
tmp = x * (1.0 - z);
} else {
tmp = t_0;
}
return tmp;
}
def code(x, y, z): t_0 = (y - x) * z tmp = 0 if z <= -9.1e-20: tmp = t_0 elif z <= 245.0: tmp = x * (1.0 - z) else: tmp = t_0 return tmp
function code(x, y, z) t_0 = Float64(Float64(y - x) * z) tmp = 0.0 if (z <= -9.1e-20) tmp = t_0; elseif (z <= 245.0) tmp = Float64(x * Float64(1.0 - z)); else tmp = t_0; end return tmp end
function tmp_2 = code(x, y, z) t_0 = (y - x) * z; tmp = 0.0; if (z <= -9.1e-20) tmp = t_0; elseif (z <= 245.0) tmp = x * (1.0 - z); else tmp = t_0; end tmp_2 = tmp; end
code[x_, y_, z_] := Block[{t$95$0 = N[(N[(y - x), $MachinePrecision] * z), $MachinePrecision]}, If[LessEqual[z, -9.1e-20], t$95$0, If[LessEqual[z, 245.0], N[(x * N[(1.0 - z), $MachinePrecision]), $MachinePrecision], t$95$0]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := \left(y - x\right) \cdot z\\
\mathbf{if}\;z \leq -9.1 \cdot 10^{-20}:\\
\;\;\;\;t\_0\\
\mathbf{elif}\;z \leq 245:\\
\;\;\;\;x \cdot \left(1 - z\right)\\
\mathbf{else}:\\
\;\;\;\;t\_0\\
\end{array}
\end{array}
if z < -9.09999999999999997e-20 or 245 < z Initial program 100.0%
Taylor expanded in z around inf
*-lowering-*.f64N/A
--lowering--.f6499.0%
Simplified99.0%
if -9.09999999999999997e-20 < z < 245Initial program 100.0%
Taylor expanded in x around inf
*-lowering-*.f64N/A
mul-1-negN/A
unsub-negN/A
--lowering--.f6475.8%
Simplified75.8%
Final simplification88.7%
(FPCore (x y z) :precision binary64 (if (<= y -1.4e+82) (* y z) (if (<= y 2.1e+17) (* x (- 1.0 z)) (* y z))))
double code(double x, double y, double z) {
double tmp;
if (y <= -1.4e+82) {
tmp = y * z;
} else if (y <= 2.1e+17) {
tmp = x * (1.0 - z);
} else {
tmp = 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 (y <= (-1.4d+82)) then
tmp = y * z
else if (y <= 2.1d+17) then
tmp = x * (1.0d0 - z)
else
tmp = y * z
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if (y <= -1.4e+82) {
tmp = y * z;
} else if (y <= 2.1e+17) {
tmp = x * (1.0 - z);
} else {
tmp = y * z;
}
return tmp;
}
def code(x, y, z): tmp = 0 if y <= -1.4e+82: tmp = y * z elif y <= 2.1e+17: tmp = x * (1.0 - z) else: tmp = y * z return tmp
function code(x, y, z) tmp = 0.0 if (y <= -1.4e+82) tmp = Float64(y * z); elseif (y <= 2.1e+17) tmp = Float64(x * Float64(1.0 - z)); else tmp = Float64(y * z); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (y <= -1.4e+82) tmp = y * z; elseif (y <= 2.1e+17) tmp = x * (1.0 - z); else tmp = y * z; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[y, -1.4e+82], N[(y * z), $MachinePrecision], If[LessEqual[y, 2.1e+17], N[(x * N[(1.0 - z), $MachinePrecision]), $MachinePrecision], N[(y * z), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -1.4 \cdot 10^{+82}:\\
\;\;\;\;y \cdot z\\
\mathbf{elif}\;y \leq 2.1 \cdot 10^{+17}:\\
\;\;\;\;x \cdot \left(1 - z\right)\\
\mathbf{else}:\\
\;\;\;\;y \cdot z\\
\end{array}
\end{array}
if y < -1.4e82 or 2.1e17 < y Initial program 100.0%
Taylor expanded in x around 0
*-lowering-*.f6472.5%
Simplified72.5%
if -1.4e82 < y < 2.1e17Initial program 100.0%
Taylor expanded in x around inf
*-lowering-*.f64N/A
mul-1-negN/A
unsub-negN/A
--lowering--.f6480.8%
Simplified80.8%
(FPCore (x y z) :precision binary64 (if (<= z -1.56e-18) (* y z) (if (<= z 2.55e-31) x (* y z))))
double code(double x, double y, double z) {
double tmp;
if (z <= -1.56e-18) {
tmp = y * z;
} else if (z <= 2.55e-31) {
tmp = x;
} else {
tmp = 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 <= (-1.56d-18)) then
tmp = y * z
else if (z <= 2.55d-31) then
tmp = x
else
tmp = y * z
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if (z <= -1.56e-18) {
tmp = y * z;
} else if (z <= 2.55e-31) {
tmp = x;
} else {
tmp = y * z;
}
return tmp;
}
def code(x, y, z): tmp = 0 if z <= -1.56e-18: tmp = y * z elif z <= 2.55e-31: tmp = x else: tmp = y * z return tmp
function code(x, y, z) tmp = 0.0 if (z <= -1.56e-18) tmp = Float64(y * z); elseif (z <= 2.55e-31) tmp = x; else tmp = Float64(y * z); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (z <= -1.56e-18) tmp = y * z; elseif (z <= 2.55e-31) tmp = x; else tmp = y * z; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[z, -1.56e-18], N[(y * z), $MachinePrecision], If[LessEqual[z, 2.55e-31], x, N[(y * z), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -1.56 \cdot 10^{-18}:\\
\;\;\;\;y \cdot z\\
\mathbf{elif}\;z \leq 2.55 \cdot 10^{-31}:\\
\;\;\;\;x\\
\mathbf{else}:\\
\;\;\;\;y \cdot z\\
\end{array}
\end{array}
if z < -1.55999999999999998e-18 or 2.5499999999999999e-31 < z Initial program 100.0%
Taylor expanded in x around 0
*-lowering-*.f6453.6%
Simplified53.6%
if -1.55999999999999998e-18 < z < 2.5499999999999999e-31Initial program 100.0%
Taylor expanded in z around 0
Simplified76.5%
(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
Simplified34.4%
herbie shell --seed 2024161
(FPCore (x y z)
:name "Diagrams.ThreeD.Shapes:frustum from diagrams-lib-1.3.0.3, B"
:precision binary64
(+ x (* (- y x) z)))