
(FPCore (x y z) :precision binary64 (+ (* x y) (* (- x 1.0) z)))
double code(double x, double y, double z) {
return (x * y) + ((x - 1.0) * 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 - 1.0d0) * z)
end function
public static double code(double x, double y, double z) {
return (x * y) + ((x - 1.0) * z);
}
def code(x, y, z): return (x * y) + ((x - 1.0) * z)
function code(x, y, z) return Float64(Float64(x * y) + Float64(Float64(x - 1.0) * z)) end
function tmp = code(x, y, z) tmp = (x * y) + ((x - 1.0) * z); end
code[x_, y_, z_] := N[(N[(x * y), $MachinePrecision] + N[(N[(x - 1.0), $MachinePrecision] * z), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x \cdot y + \left(x - 1\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 1.0) z)))
double code(double x, double y, double z) {
return (x * y) + ((x - 1.0) * 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 - 1.0d0) * z)
end function
public static double code(double x, double y, double z) {
return (x * y) + ((x - 1.0) * z);
}
def code(x, y, z): return (x * y) + ((x - 1.0) * z)
function code(x, y, z) return Float64(Float64(x * y) + Float64(Float64(x - 1.0) * z)) end
function tmp = code(x, y, z) tmp = (x * y) + ((x - 1.0) * z); end
code[x_, y_, z_] := N[(N[(x * y), $MachinePrecision] + N[(N[(x - 1.0), $MachinePrecision] * z), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x \cdot y + \left(x - 1\right) \cdot z
\end{array}
(FPCore (x y z) :precision binary64 (fma (+ y z) x (- z)))
double code(double x, double y, double z) {
return fma((y + z), x, -z);
}
function code(x, y, z) return fma(Float64(y + z), x, Float64(-z)) end
code[x_, y_, z_] := N[(N[(y + z), $MachinePrecision] * x + (-z)), $MachinePrecision]
\begin{array}{l}
\\
\mathsf{fma}\left(y + z, x, -z\right)
\end{array}
(FPCore (x y z)
:precision binary64
(if (<= x -9e-159)
(* y x)
(if (<= x 2.75e-102)
(- z)
(if (or (<= x 5.5e+52) (and (not (<= x 4.3e+209)) (<= x 5.5e+284)))
(* y x)
(* z x)))))
double code(double x, double y, double z) {
double tmp;
if (x <= -9e-159) {
tmp = y * x;
} else if (x <= 2.75e-102) {
tmp = -z;
} else if ((x <= 5.5e+52) || (!(x <= 4.3e+209) && (x <= 5.5e+284))) {
tmp = y * x;
} else {
tmp = z * 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 (x <= (-9d-159)) then
tmp = y * x
else if (x <= 2.75d-102) then
tmp = -z
else if ((x <= 5.5d+52) .or. (.not. (x <= 4.3d+209)) .and. (x <= 5.5d+284)) then
tmp = y * x
else
tmp = z * x
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if (x <= -9e-159) {
tmp = y * x;
} else if (x <= 2.75e-102) {
tmp = -z;
} else if ((x <= 5.5e+52) || (!(x <= 4.3e+209) && (x <= 5.5e+284))) {
tmp = y * x;
} else {
tmp = z * x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if x <= -9e-159: tmp = y * x elif x <= 2.75e-102: tmp = -z elif (x <= 5.5e+52) or (not (x <= 4.3e+209) and (x <= 5.5e+284)): tmp = y * x else: tmp = z * x return tmp
function code(x, y, z) tmp = 0.0 if (x <= -9e-159) tmp = Float64(y * x); elseif (x <= 2.75e-102) tmp = Float64(-z); elseif ((x <= 5.5e+52) || (!(x <= 4.3e+209) && (x <= 5.5e+284))) tmp = Float64(y * x); else tmp = Float64(z * x); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if (x <= -9e-159) tmp = y * x; elseif (x <= 2.75e-102) tmp = -z; elseif ((x <= 5.5e+52) || (~((x <= 4.3e+209)) && (x <= 5.5e+284))) tmp = y * x; else tmp = z * x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[LessEqual[x, -9e-159], N[(y * x), $MachinePrecision], If[LessEqual[x, 2.75e-102], (-z), If[Or[LessEqual[x, 5.5e+52], And[N[Not[LessEqual[x, 4.3e+209]], $MachinePrecision], LessEqual[x, 5.5e+284]]], N[(y * x), $MachinePrecision], N[(z * x), $MachinePrecision]]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -9 \cdot 10^{-159}:\\
\;\;\;\;y \cdot x\\
\mathbf{elif}\;x \leq 2.75 \cdot 10^{-102}:\\
\;\;\;\;-z\\
\mathbf{elif}\;x \leq 5.5 \cdot 10^{+52} \lor \neg \left(x \leq 4.3 \cdot 10^{+209}\right) \land x \leq 5.5 \cdot 10^{+284}:\\
\;\;\;\;y \cdot x\\
\mathbf{else}:\\
\;\;\;\;z \cdot x\\
\end{array}
\end{array}
(FPCore (x y z) :precision binary64 (if (or (<= z -7.6e+43) (not (<= z 4.8e+35))) (- (* z x) z) (- (* y x) z)))
double code(double x, double y, double z) {
double tmp;
if ((z <= -7.6e+43) || !(z <= 4.8e+35)) {
tmp = (z * x) - z;
} else {
tmp = (y * x) - 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 <= (-7.6d+43)) .or. (.not. (z <= 4.8d+35))) then
tmp = (z * x) - z
else
tmp = (y * x) - z
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if ((z <= -7.6e+43) || !(z <= 4.8e+35)) {
tmp = (z * x) - z;
} else {
tmp = (y * x) - z;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (z <= -7.6e+43) or not (z <= 4.8e+35): tmp = (z * x) - z else: tmp = (y * x) - z return tmp
function code(x, y, z) tmp = 0.0 if ((z <= -7.6e+43) || !(z <= 4.8e+35)) tmp = Float64(Float64(z * x) - z); else tmp = Float64(Float64(y * x) - z); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((z <= -7.6e+43) || ~((z <= 4.8e+35))) tmp = (z * x) - z; else tmp = (y * x) - z; end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[z, -7.6e+43], N[Not[LessEqual[z, 4.8e+35]], $MachinePrecision]], N[(N[(z * x), $MachinePrecision] - z), $MachinePrecision], N[(N[(y * x), $MachinePrecision] - z), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -7.6 \cdot 10^{+43} \lor \neg \left(z \leq 4.8 \cdot 10^{+35}\right):\\
\;\;\;\;z \cdot x - z\\
\mathbf{else}:\\
\;\;\;\;y \cdot x - z\\
\end{array}
\end{array}
(FPCore (x y z) :precision binary64 (if (or (<= x -2.4e-159) (not (<= x 2.6e-102))) (* y x) (- z)))
double code(double x, double y, double z) {
double tmp;
if ((x <= -2.4e-159) || !(x <= 2.6e-102)) {
tmp = y * x;
} 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 <= (-2.4d-159)) .or. (.not. (x <= 2.6d-102))) then
tmp = y * x
else
tmp = -z
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if ((x <= -2.4e-159) || !(x <= 2.6e-102)) {
tmp = y * x;
} else {
tmp = -z;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (x <= -2.4e-159) or not (x <= 2.6e-102): tmp = y * x else: tmp = -z return tmp
function code(x, y, z) tmp = 0.0 if ((x <= -2.4e-159) || !(x <= 2.6e-102)) tmp = Float64(y * x); else tmp = Float64(-z); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((x <= -2.4e-159) || ~((x <= 2.6e-102))) tmp = y * x; else tmp = -z; end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[x, -2.4e-159], N[Not[LessEqual[x, 2.6e-102]], $MachinePrecision]], N[(y * x), $MachinePrecision], (-z)]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -2.4 \cdot 10^{-159} \lor \neg \left(x \leq 2.6 \cdot 10^{-102}\right):\\
\;\;\;\;y \cdot x\\
\mathbf{else}:\\
\;\;\;\;-z\\
\end{array}
\end{array}
(FPCore (x y z) :precision binary64 (- (* (+ y z) x) z))
double code(double x, double y, double z) {
return ((y + z) * 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 = ((y + z) * x) - z
end function
public static double code(double x, double y, double z) {
return ((y + z) * x) - z;
}
def code(x, y, z): return ((y + z) * x) - z
function code(x, y, z) return Float64(Float64(Float64(y + z) * x) - z) end
function tmp = code(x, y, z) tmp = ((y + z) * x) - z; end
code[x_, y_, z_] := N[(N[(N[(y + z), $MachinePrecision] * x), $MachinePrecision] - z), $MachinePrecision]
\begin{array}{l}
\\
\left(y + z\right) \cdot x - z
\end{array}
(FPCore (x y z) :precision binary64 (- (* y x) z))
double code(double x, double y, double z) {
return (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 = (y * x) - z
end function
public static double code(double x, double y, double z) {
return (y * x) - z;
}
def code(x, y, z): return (y * x) - z
function code(x, y, z) return Float64(Float64(y * x) - z) end
function tmp = code(x, y, z) tmp = (y * x) - z; end
code[x_, y_, z_] := N[(N[(y * x), $MachinePrecision] - z), $MachinePrecision]
\begin{array}{l}
\\
y \cdot x - z
\end{array}
(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 Float64(-z) end
function tmp = code(x, y, z) tmp = -z; end
code[x_, y_, z_] := (-z)
\begin{array}{l}
\\
-z
\end{array}
herbie shell --seed 2023350
(FPCore (x y z)
:name "Graphics.Rendering.Chart.Drawing:drawTextsR from Chart-1.5.3"
:precision binary64
(+ (* x y) (* (- x 1.0) z)))