
(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}
(FPCore (x y z)
:precision binary64
(let* ((t_0 (* x (- z))))
(if (<= z -3.1e+246)
t_0
(if (<= z -1.75e-25)
(* y z)
(if (<= z 1.2e-25) x (if (<= z 2.3e+275) (* y z) t_0))))))
double code(double x, double y, double z) {
double t_0 = x * -z;
double tmp;
if (z <= -3.1e+246) {
tmp = t_0;
} else if (z <= -1.75e-25) {
tmp = y * z;
} else if (z <= 1.2e-25) {
tmp = x;
} else if (z <= 2.3e+275) {
tmp = 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 = x * -z
if (z <= (-3.1d+246)) then
tmp = t_0
else if (z <= (-1.75d-25)) then
tmp = y * z
else if (z <= 1.2d-25) then
tmp = x
else if (z <= 2.3d+275) then
tmp = 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 = x * -z;
double tmp;
if (z <= -3.1e+246) {
tmp = t_0;
} else if (z <= -1.75e-25) {
tmp = y * z;
} else if (z <= 1.2e-25) {
tmp = x;
} else if (z <= 2.3e+275) {
tmp = y * z;
} else {
tmp = t_0;
}
return tmp;
}
def code(x, y, z): t_0 = x * -z tmp = 0 if z <= -3.1e+246: tmp = t_0 elif z <= -1.75e-25: tmp = y * z elif z <= 1.2e-25: tmp = x elif z <= 2.3e+275: tmp = y * z else: tmp = t_0 return tmp
function code(x, y, z) t_0 = Float64(x * Float64(-z)) tmp = 0.0 if (z <= -3.1e+246) tmp = t_0; elseif (z <= -1.75e-25) tmp = Float64(y * z); elseif (z <= 1.2e-25) tmp = x; elseif (z <= 2.3e+275) tmp = Float64(y * z); else tmp = t_0; end return tmp end
function tmp_2 = code(x, y, z) t_0 = x * -z; tmp = 0.0; if (z <= -3.1e+246) tmp = t_0; elseif (z <= -1.75e-25) tmp = y * z; elseif (z <= 1.2e-25) tmp = x; elseif (z <= 2.3e+275) tmp = y * z; else tmp = t_0; end tmp_2 = tmp; end
code[x_, y_, z_] := Block[{t$95$0 = N[(x * (-z)), $MachinePrecision]}, If[LessEqual[z, -3.1e+246], t$95$0, If[LessEqual[z, -1.75e-25], N[(y * z), $MachinePrecision], If[LessEqual[z, 1.2e-25], x, If[LessEqual[z, 2.3e+275], N[(y * z), $MachinePrecision], t$95$0]]]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := x \cdot \left(-z\right)\\
\mathbf{if}\;z \leq -3.1 \cdot 10^{+246}:\\
\;\;\;\;t_0\\
\mathbf{elif}\;z \leq -1.75 \cdot 10^{-25}:\\
\;\;\;\;y \cdot z\\
\mathbf{elif}\;z \leq 1.2 \cdot 10^{-25}:\\
\;\;\;\;x\\
\mathbf{elif}\;z \leq 2.3 \cdot 10^{+275}:\\
\;\;\;\;y \cdot z\\
\mathbf{else}:\\
\;\;\;\;t_0\\
\end{array}
\end{array}
(FPCore (x y z) :precision binary64 (if (or (<= x -3.4e-121) (not (<= x 3.6e-43))) (* x (- 1.0 z)) (* y z)))
double code(double x, double y, double z) {
double tmp;
if ((x <= -3.4e-121) || !(x <= 3.6e-43)) {
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 ((x <= (-3.4d-121)) .or. (.not. (x <= 3.6d-43))) 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 ((x <= -3.4e-121) || !(x <= 3.6e-43)) {
tmp = x * (1.0 - z);
} else {
tmp = y * z;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (x <= -3.4e-121) or not (x <= 3.6e-43): tmp = x * (1.0 - z) else: tmp = y * z return tmp
function code(x, y, z) tmp = 0.0 if ((x <= -3.4e-121) || !(x <= 3.6e-43)) 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 ((x <= -3.4e-121) || ~((x <= 3.6e-43))) tmp = x * (1.0 - z); else tmp = y * z; end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[x, -3.4e-121], N[Not[LessEqual[x, 3.6e-43]], $MachinePrecision]], N[(x * N[(1.0 - z), $MachinePrecision]), $MachinePrecision], N[(y * z), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -3.4 \cdot 10^{-121} \lor \neg \left(x \leq 3.6 \cdot 10^{-43}\right):\\
\;\;\;\;x \cdot \left(1 - z\right)\\
\mathbf{else}:\\
\;\;\;\;y \cdot z\\
\end{array}
\end{array}
(FPCore (x y z) :precision binary64 (if (or (<= z -9.2e-26) (not (<= z 0.005))) (* (- y x) z) (* x (- 1.0 z))))
double code(double x, double y, double z) {
double tmp;
if ((z <= -9.2e-26) || !(z <= 0.005)) {
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 ((z <= (-9.2d-26)) .or. (.not. (z <= 0.005d0))) 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 ((z <= -9.2e-26) || !(z <= 0.005)) {
tmp = (y - x) * z;
} else {
tmp = x * (1.0 - z);
}
return tmp;
}
def code(x, y, z): tmp = 0 if (z <= -9.2e-26) or not (z <= 0.005): tmp = (y - x) * z else: tmp = x * (1.0 - z) return tmp
function code(x, y, z) tmp = 0.0 if ((z <= -9.2e-26) || !(z <= 0.005)) 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 ((z <= -9.2e-26) || ~((z <= 0.005))) tmp = (y - x) * z; else tmp = x * (1.0 - z); end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[z, -9.2e-26], N[Not[LessEqual[z, 0.005]], $MachinePrecision]], N[(N[(y - x), $MachinePrecision] * z), $MachinePrecision], N[(x * N[(1.0 - z), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -9.2 \cdot 10^{-26} \lor \neg \left(z \leq 0.005\right):\\
\;\;\;\;\left(y - x\right) \cdot z\\
\mathbf{else}:\\
\;\;\;\;x \cdot \left(1 - z\right)\\
\end{array}
\end{array}
(FPCore (x y z) :precision binary64 (if (or (<= z -1.22e-26) (not (<= z 3.4e-23))) (* y z) x))
double code(double x, double y, double z) {
double tmp;
if ((z <= -1.22e-26) || !(z <= 3.4e-23)) {
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 ((z <= (-1.22d-26)) .or. (.not. (z <= 3.4d-23))) 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 ((z <= -1.22e-26) || !(z <= 3.4e-23)) {
tmp = y * z;
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (z <= -1.22e-26) or not (z <= 3.4e-23): tmp = y * z else: tmp = x return tmp
function code(x, y, z) tmp = 0.0 if ((z <= -1.22e-26) || !(z <= 3.4e-23)) tmp = Float64(y * z); else tmp = x; end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((z <= -1.22e-26) || ~((z <= 3.4e-23))) tmp = y * z; else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[z, -1.22e-26], N[Not[LessEqual[z, 3.4e-23]], $MachinePrecision]], N[(y * z), $MachinePrecision], x]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -1.22 \cdot 10^{-26} \lor \neg \left(z \leq 3.4 \cdot 10^{-23}\right):\\
\;\;\;\;y \cdot z\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\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}
(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}
herbie shell --seed 2024008
(FPCore (x y z)
:name "Diagrams.ThreeD.Shapes:frustum from diagrams-lib-1.3.0.3, B"
:precision binary64
(+ x (* (- y x) z)))