
(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 -13500000.0) t_0 (if (<= z 0.108) (+ x (* y z)) t_0))))
double code(double x, double y, double z) {
double t_0 = (y - x) * z;
double tmp;
if (z <= -13500000.0) {
tmp = t_0;
} else if (z <= 0.108) {
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 <= (-13500000.0d0)) then
tmp = t_0
else if (z <= 0.108d0) 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 <= -13500000.0) {
tmp = t_0;
} else if (z <= 0.108) {
tmp = x + (y * z);
} else {
tmp = t_0;
}
return tmp;
}
def code(x, y, z): t_0 = (y - x) * z tmp = 0 if z <= -13500000.0: tmp = t_0 elif z <= 0.108: 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 <= -13500000.0) tmp = t_0; elseif (z <= 0.108) 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 <= -13500000.0) tmp = t_0; elseif (z <= 0.108) 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, -13500000.0], t$95$0, If[LessEqual[z, 0.108], 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 -13500000:\\
\;\;\;\;t\_0\\
\mathbf{elif}\;z \leq 0.108:\\
\;\;\;\;x + y \cdot z\\
\mathbf{else}:\\
\;\;\;\;t\_0\\
\end{array}
\end{array}
if z < -1.35e7 or 0.107999999999999999 < z Initial program 100.0%
Taylor expanded in z around inf
*-lowering-*.f64N/A
--lowering--.f6498.8%
Simplified98.8%
if -1.35e7 < z < 0.107999999999999999Initial program 100.0%
Taylor expanded in y around inf
*-lowering-*.f6499.0%
Simplified99.0%
Final simplification98.9%
(FPCore (x y z) :precision binary64 (let* ((t_0 (* (- y x) z))) (if (<= z -7.8e-153) t_0 (if (<= z 0.0065) (* x (- 1.0 z)) t_0))))
double code(double x, double y, double z) {
double t_0 = (y - x) * z;
double tmp;
if (z <= -7.8e-153) {
tmp = t_0;
} else if (z <= 0.0065) {
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 <= (-7.8d-153)) then
tmp = t_0
else if (z <= 0.0065d0) 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 <= -7.8e-153) {
tmp = t_0;
} else if (z <= 0.0065) {
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 <= -7.8e-153: tmp = t_0 elif z <= 0.0065: 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 <= -7.8e-153) tmp = t_0; elseif (z <= 0.0065) 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 <= -7.8e-153) tmp = t_0; elseif (z <= 0.0065) 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, -7.8e-153], t$95$0, If[LessEqual[z, 0.0065], 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 -7.8 \cdot 10^{-153}:\\
\;\;\;\;t\_0\\
\mathbf{elif}\;z \leq 0.0065:\\
\;\;\;\;x \cdot \left(1 - z\right)\\
\mathbf{else}:\\
\;\;\;\;t\_0\\
\end{array}
\end{array}
if z < -7.8000000000000004e-153 or 0.0064999999999999997 < z Initial program 100.0%
Taylor expanded in z around inf
*-lowering-*.f64N/A
--lowering--.f6494.4%
Simplified94.4%
if -7.8000000000000004e-153 < z < 0.0064999999999999997Initial program 100.0%
Taylor expanded in x around inf
*-lowering-*.f64N/A
mul-1-negN/A
unsub-negN/A
--lowering--.f6475.9%
Simplified75.9%
Final simplification87.7%
(FPCore (x y z) :precision binary64 (if (<= y -4.9e+92) (* y z) (if (<= y 3.1e+35) (* x (- 1.0 z)) (* y z))))
double code(double x, double y, double z) {
double tmp;
if (y <= -4.9e+92) {
tmp = y * z;
} else if (y <= 3.1e+35) {
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 <= (-4.9d+92)) then
tmp = y * z
else if (y <= 3.1d+35) 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 <= -4.9e+92) {
tmp = y * z;
} else if (y <= 3.1e+35) {
tmp = x * (1.0 - z);
} else {
tmp = y * z;
}
return tmp;
}
def code(x, y, z): tmp = 0 if y <= -4.9e+92: tmp = y * z elif y <= 3.1e+35: tmp = x * (1.0 - z) else: tmp = y * z return tmp
function code(x, y, z) tmp = 0.0 if (y <= -4.9e+92) tmp = Float64(y * z); elseif (y <= 3.1e+35) 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 <= -4.9e+92) tmp = y * z; elseif (y <= 3.1e+35) tmp = x * (1.0 - z); else tmp = y * z; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[y, -4.9e+92], N[(y * z), $MachinePrecision], If[LessEqual[y, 3.1e+35], N[(x * N[(1.0 - z), $MachinePrecision]), $MachinePrecision], N[(y * z), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -4.9 \cdot 10^{+92}:\\
\;\;\;\;y \cdot z\\
\mathbf{elif}\;y \leq 3.1 \cdot 10^{+35}:\\
\;\;\;\;x \cdot \left(1 - z\right)\\
\mathbf{else}:\\
\;\;\;\;y \cdot z\\
\end{array}
\end{array}
if y < -4.9000000000000002e92 or 3.09999999999999987e35 < y Initial program 100.0%
Taylor expanded in x around 0
*-lowering-*.f6476.4%
Simplified76.4%
if -4.9000000000000002e92 < y < 3.09999999999999987e35Initial program 100.0%
Taylor expanded in x around inf
*-lowering-*.f64N/A
mul-1-negN/A
unsub-negN/A
--lowering--.f6482.7%
Simplified82.7%
(FPCore (x y z) :precision binary64 (if (<= z -7.8e-153) (* y z) (if (<= z 5.7e-8) x (* y z))))
double code(double x, double y, double z) {
double tmp;
if (z <= -7.8e-153) {
tmp = y * z;
} else if (z <= 5.7e-8) {
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 <= (-7.8d-153)) then
tmp = y * z
else if (z <= 5.7d-8) 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 <= -7.8e-153) {
tmp = y * z;
} else if (z <= 5.7e-8) {
tmp = x;
} else {
tmp = y * z;
}
return tmp;
}
def code(x, y, z): tmp = 0 if z <= -7.8e-153: tmp = y * z elif z <= 5.7e-8: tmp = x else: tmp = y * z return tmp
function code(x, y, z) tmp = 0.0 if (z <= -7.8e-153) tmp = Float64(y * z); elseif (z <= 5.7e-8) tmp = x; else tmp = Float64(y * z); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (z <= -7.8e-153) tmp = y * z; elseif (z <= 5.7e-8) tmp = x; else tmp = y * z; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[z, -7.8e-153], N[(y * z), $MachinePrecision], If[LessEqual[z, 5.7e-8], x, N[(y * z), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -7.8 \cdot 10^{-153}:\\
\;\;\;\;y \cdot z\\
\mathbf{elif}\;z \leq 5.7 \cdot 10^{-8}:\\
\;\;\;\;x\\
\mathbf{else}:\\
\;\;\;\;y \cdot z\\
\end{array}
\end{array}
if z < -7.8000000000000004e-153 or 5.70000000000000009e-8 < z Initial program 100.0%
Taylor expanded in x around 0
*-lowering-*.f6449.7%
Simplified49.7%
if -7.8000000000000004e-153 < z < 5.70000000000000009e-8Initial program 100.0%
Taylor expanded in z around 0
Simplified74.6%
(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
Simplified31.9%
herbie shell --seed 2024163
(FPCore (x y z)
:name "Diagrams.ThreeD.Shapes:frustum from diagrams-lib-1.3.0.3, B"
:precision binary64
(+ x (* (- y x) z)))