
(FPCore (x y z) :precision binary64 (+ x (* y (- z x))))
double code(double x, double y, double z) {
return x + (y * (z - 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 + (y * (z - x))
end function
public static double code(double x, double y, double z) {
return x + (y * (z - x));
}
def code(x, y, z): return x + (y * (z - x))
function code(x, y, z) return Float64(x + Float64(y * Float64(z - x))) end
function tmp = code(x, y, z) tmp = x + (y * (z - x)); end
code[x_, y_, z_] := N[(x + N[(y * N[(z - x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x + y \cdot \left(z - x\right)
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 8 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y z) :precision binary64 (+ x (* y (- z x))))
double code(double x, double y, double z) {
return x + (y * (z - 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 + (y * (z - x))
end function
public static double code(double x, double y, double z) {
return x + (y * (z - x));
}
def code(x, y, z): return x + (y * (z - x))
function code(x, y, z) return Float64(x + Float64(y * Float64(z - x))) end
function tmp = code(x, y, z) tmp = x + (y * (z - x)); end
code[x_, y_, z_] := N[(x + N[(y * N[(z - x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x + y \cdot \left(z - x\right)
\end{array}
(FPCore (x y z) :precision binary64 (fma y (- z x) x))
double code(double x, double y, double z) {
return fma(y, (z - x), x);
}
function code(x, y, z) return fma(y, Float64(z - x), x) end
code[x_, y_, z_] := N[(y * N[(z - x), $MachinePrecision] + x), $MachinePrecision]
\begin{array}{l}
\\
\mathsf{fma}\left(y, z - x, x\right)
\end{array}
(FPCore (x y z)
:precision binary64
(let* ((t_0 (* y (- x))))
(if (<= y -1.15e+190)
(* y z)
(if (<= y -4.3e+102)
t_0
(if (<= y -3.85e+62)
(* y z)
(if (<= y -9.4e+24)
t_0
(if (<= y -6.6e-53)
(* y z)
(if (<= y 6.4e-65)
x
(if (or (<= y 1.4e+118) (not (<= y 4.4e+302)))
(* y z)
t_0)))))))))
double code(double x, double y, double z) {
double t_0 = y * -x;
double tmp;
if (y <= -1.15e+190) {
tmp = y * z;
} else if (y <= -4.3e+102) {
tmp = t_0;
} else if (y <= -3.85e+62) {
tmp = y * z;
} else if (y <= -9.4e+24) {
tmp = t_0;
} else if (y <= -6.6e-53) {
tmp = y * z;
} else if (y <= 6.4e-65) {
tmp = x;
} else if ((y <= 1.4e+118) || !(y <= 4.4e+302)) {
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 = y * -x
if (y <= (-1.15d+190)) then
tmp = y * z
else if (y <= (-4.3d+102)) then
tmp = t_0
else if (y <= (-3.85d+62)) then
tmp = y * z
else if (y <= (-9.4d+24)) then
tmp = t_0
else if (y <= (-6.6d-53)) then
tmp = y * z
else if (y <= 6.4d-65) then
tmp = x
else if ((y <= 1.4d+118) .or. (.not. (y <= 4.4d+302))) 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 = y * -x;
double tmp;
if (y <= -1.15e+190) {
tmp = y * z;
} else if (y <= -4.3e+102) {
tmp = t_0;
} else if (y <= -3.85e+62) {
tmp = y * z;
} else if (y <= -9.4e+24) {
tmp = t_0;
} else if (y <= -6.6e-53) {
tmp = y * z;
} else if (y <= 6.4e-65) {
tmp = x;
} else if ((y <= 1.4e+118) || !(y <= 4.4e+302)) {
tmp = y * z;
} else {
tmp = t_0;
}
return tmp;
}
def code(x, y, z): t_0 = y * -x tmp = 0 if y <= -1.15e+190: tmp = y * z elif y <= -4.3e+102: tmp = t_0 elif y <= -3.85e+62: tmp = y * z elif y <= -9.4e+24: tmp = t_0 elif y <= -6.6e-53: tmp = y * z elif y <= 6.4e-65: tmp = x elif (y <= 1.4e+118) or not (y <= 4.4e+302): tmp = y * z else: tmp = t_0 return tmp
function code(x, y, z) t_0 = Float64(y * Float64(-x)) tmp = 0.0 if (y <= -1.15e+190) tmp = Float64(y * z); elseif (y <= -4.3e+102) tmp = t_0; elseif (y <= -3.85e+62) tmp = Float64(y * z); elseif (y <= -9.4e+24) tmp = t_0; elseif (y <= -6.6e-53) tmp = Float64(y * z); elseif (y <= 6.4e-65) tmp = x; elseif ((y <= 1.4e+118) || !(y <= 4.4e+302)) tmp = Float64(y * z); else tmp = t_0; end return tmp end
function tmp_2 = code(x, y, z) t_0 = y * -x; tmp = 0.0; if (y <= -1.15e+190) tmp = y * z; elseif (y <= -4.3e+102) tmp = t_0; elseif (y <= -3.85e+62) tmp = y * z; elseif (y <= -9.4e+24) tmp = t_0; elseif (y <= -6.6e-53) tmp = y * z; elseif (y <= 6.4e-65) tmp = x; elseif ((y <= 1.4e+118) || ~((y <= 4.4e+302))) tmp = y * z; else tmp = t_0; end tmp_2 = tmp; end
code[x_, y_, z_] := Block[{t$95$0 = N[(y * (-x)), $MachinePrecision]}, If[LessEqual[y, -1.15e+190], N[(y * z), $MachinePrecision], If[LessEqual[y, -4.3e+102], t$95$0, If[LessEqual[y, -3.85e+62], N[(y * z), $MachinePrecision], If[LessEqual[y, -9.4e+24], t$95$0, If[LessEqual[y, -6.6e-53], N[(y * z), $MachinePrecision], If[LessEqual[y, 6.4e-65], x, If[Or[LessEqual[y, 1.4e+118], N[Not[LessEqual[y, 4.4e+302]], $MachinePrecision]], N[(y * z), $MachinePrecision], t$95$0]]]]]]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := y \cdot \left(-x\right)\\
\mathbf{if}\;y \leq -1.15 \cdot 10^{+190}:\\
\;\;\;\;y \cdot z\\
\mathbf{elif}\;y \leq -4.3 \cdot 10^{+102}:\\
\;\;\;\;t_0\\
\mathbf{elif}\;y \leq -3.85 \cdot 10^{+62}:\\
\;\;\;\;y \cdot z\\
\mathbf{elif}\;y \leq -9.4 \cdot 10^{+24}:\\
\;\;\;\;t_0\\
\mathbf{elif}\;y \leq -6.6 \cdot 10^{-53}:\\
\;\;\;\;y \cdot z\\
\mathbf{elif}\;y \leq 6.4 \cdot 10^{-65}:\\
\;\;\;\;x\\
\mathbf{elif}\;y \leq 1.4 \cdot 10^{+118} \lor \neg \left(y \leq 4.4 \cdot 10^{+302}\right):\\
\;\;\;\;y \cdot z\\
\mathbf{else}:\\
\;\;\;\;t_0\\
\end{array}
\end{array}
(FPCore (x y z) :precision binary64 (if (or (<= z -5.1e+191) (not (<= z 1e-60))) (* y z) (* x (- 1.0 y))))
double code(double x, double y, double z) {
double tmp;
if ((z <= -5.1e+191) || !(z <= 1e-60)) {
tmp = y * z;
} else {
tmp = x * (1.0 - y);
}
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 <= (-5.1d+191)) .or. (.not. (z <= 1d-60))) then
tmp = y * z
else
tmp = x * (1.0d0 - y)
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if ((z <= -5.1e+191) || !(z <= 1e-60)) {
tmp = y * z;
} else {
tmp = x * (1.0 - y);
}
return tmp;
}
def code(x, y, z): tmp = 0 if (z <= -5.1e+191) or not (z <= 1e-60): tmp = y * z else: tmp = x * (1.0 - y) return tmp
function code(x, y, z) tmp = 0.0 if ((z <= -5.1e+191) || !(z <= 1e-60)) tmp = Float64(y * z); else tmp = Float64(x * Float64(1.0 - y)); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((z <= -5.1e+191) || ~((z <= 1e-60))) tmp = y * z; else tmp = x * (1.0 - y); end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[z, -5.1e+191], N[Not[LessEqual[z, 1e-60]], $MachinePrecision]], N[(y * z), $MachinePrecision], N[(x * N[(1.0 - y), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -5.1 \cdot 10^{+191} \lor \neg \left(z \leq 10^{-60}\right):\\
\;\;\;\;y \cdot z\\
\mathbf{else}:\\
\;\;\;\;x \cdot \left(1 - y\right)\\
\end{array}
\end{array}
(FPCore (x y z) :precision binary64 (if (or (<= z -2.55e-22) (not (<= z 3e-68))) (+ x (* y z)) (* x (- 1.0 y))))
double code(double x, double y, double z) {
double tmp;
if ((z <= -2.55e-22) || !(z <= 3e-68)) {
tmp = x + (y * z);
} else {
tmp = x * (1.0 - y);
}
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 <= (-2.55d-22)) .or. (.not. (z <= 3d-68))) then
tmp = x + (y * z)
else
tmp = x * (1.0d0 - y)
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if ((z <= -2.55e-22) || !(z <= 3e-68)) {
tmp = x + (y * z);
} else {
tmp = x * (1.0 - y);
}
return tmp;
}
def code(x, y, z): tmp = 0 if (z <= -2.55e-22) or not (z <= 3e-68): tmp = x + (y * z) else: tmp = x * (1.0 - y) return tmp
function code(x, y, z) tmp = 0.0 if ((z <= -2.55e-22) || !(z <= 3e-68)) tmp = Float64(x + Float64(y * z)); else tmp = Float64(x * Float64(1.0 - y)); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((z <= -2.55e-22) || ~((z <= 3e-68))) tmp = x + (y * z); else tmp = x * (1.0 - y); end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[z, -2.55e-22], N[Not[LessEqual[z, 3e-68]], $MachinePrecision]], N[(x + N[(y * z), $MachinePrecision]), $MachinePrecision], N[(x * N[(1.0 - y), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -2.55 \cdot 10^{-22} \lor \neg \left(z \leq 3 \cdot 10^{-68}\right):\\
\;\;\;\;x + y \cdot z\\
\mathbf{else}:\\
\;\;\;\;x \cdot \left(1 - y\right)\\
\end{array}
\end{array}
(FPCore (x y z) :precision binary64 (if (or (<= z -4.2e-18) (not (<= z 3.2e-68))) (+ x (* y z)) (- x (* y x))))
double code(double x, double y, double z) {
double tmp;
if ((z <= -4.2e-18) || !(z <= 3.2e-68)) {
tmp = x + (y * z);
} else {
tmp = x - (y * 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 <= (-4.2d-18)) .or. (.not. (z <= 3.2d-68))) then
tmp = x + (y * z)
else
tmp = x - (y * x)
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if ((z <= -4.2e-18) || !(z <= 3.2e-68)) {
tmp = x + (y * z);
} else {
tmp = x - (y * x);
}
return tmp;
}
def code(x, y, z): tmp = 0 if (z <= -4.2e-18) or not (z <= 3.2e-68): tmp = x + (y * z) else: tmp = x - (y * x) return tmp
function code(x, y, z) tmp = 0.0 if ((z <= -4.2e-18) || !(z <= 3.2e-68)) tmp = Float64(x + Float64(y * z)); else tmp = Float64(x - Float64(y * x)); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((z <= -4.2e-18) || ~((z <= 3.2e-68))) tmp = x + (y * z); else tmp = x - (y * x); end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[z, -4.2e-18], N[Not[LessEqual[z, 3.2e-68]], $MachinePrecision]], N[(x + N[(y * z), $MachinePrecision]), $MachinePrecision], N[(x - N[(y * x), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -4.2 \cdot 10^{-18} \lor \neg \left(z \leq 3.2 \cdot 10^{-68}\right):\\
\;\;\;\;x + y \cdot z\\
\mathbf{else}:\\
\;\;\;\;x - y \cdot x\\
\end{array}
\end{array}
(FPCore (x y z) :precision binary64 (if (or (<= y -2.35e-51) (not (<= y 8e-69))) (* y z) x))
double code(double x, double y, double z) {
double tmp;
if ((y <= -2.35e-51) || !(y <= 8e-69)) {
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 <= (-2.35d-51)) .or. (.not. (y <= 8d-69))) 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 <= -2.35e-51) || !(y <= 8e-69)) {
tmp = y * z;
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (y <= -2.35e-51) or not (y <= 8e-69): tmp = y * z else: tmp = x return tmp
function code(x, y, z) tmp = 0.0 if ((y <= -2.35e-51) || !(y <= 8e-69)) tmp = Float64(y * z); else tmp = x; end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((y <= -2.35e-51) || ~((y <= 8e-69))) tmp = y * z; else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[y, -2.35e-51], N[Not[LessEqual[y, 8e-69]], $MachinePrecision]], N[(y * z), $MachinePrecision], x]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -2.35 \cdot 10^{-51} \lor \neg \left(y \leq 8 \cdot 10^{-69}\right):\\
\;\;\;\;y \cdot z\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
(FPCore (x y z) :precision binary64 (+ x (* y (- z x))))
double code(double x, double y, double z) {
return x + (y * (z - 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 + (y * (z - x))
end function
public static double code(double x, double y, double z) {
return x + (y * (z - x));
}
def code(x, y, z): return x + (y * (z - x))
function code(x, y, z) return Float64(x + Float64(y * Float64(z - x))) end
function tmp = code(x, y, z) tmp = x + (y * (z - x)); end
code[x_, y_, z_] := N[(x + N[(y * N[(z - x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x + y \cdot \left(z - x\right)
\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 2024010
(FPCore (x y z)
:name "SynthBasics:oscSampleBasedAux from YampaSynth-0.2"
:precision binary64
(+ x (* y (- z x))))