
(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 -1.6e+204)
t_0
(if (<= y -3.45e+89)
(* y z)
(if (<= y -3.8e+55)
t_0
(if (<= y -1.75e-112)
(* y z)
(if (<= y 2.25e-16) x (if (<= y 1.15e+174) (* y z) t_0))))))))
double code(double x, double y, double z) {
double t_0 = y * -x;
double tmp;
if (y <= -1.6e+204) {
tmp = t_0;
} else if (y <= -3.45e+89) {
tmp = y * z;
} else if (y <= -3.8e+55) {
tmp = t_0;
} else if (y <= -1.75e-112) {
tmp = y * z;
} else if (y <= 2.25e-16) {
tmp = x;
} else if (y <= 1.15e+174) {
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 <= (-1.6d+204)) then
tmp = t_0
else if (y <= (-3.45d+89)) then
tmp = y * z
else if (y <= (-3.8d+55)) then
tmp = t_0
else if (y <= (-1.75d-112)) then
tmp = y * z
else if (y <= 2.25d-16) then
tmp = x
else if (y <= 1.15d+174) 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 <= -1.6e+204) {
tmp = t_0;
} else if (y <= -3.45e+89) {
tmp = y * z;
} else if (y <= -3.8e+55) {
tmp = t_0;
} else if (y <= -1.75e-112) {
tmp = y * z;
} else if (y <= 2.25e-16) {
tmp = x;
} else if (y <= 1.15e+174) {
tmp = y * z;
} else {
tmp = t_0;
}
return tmp;
}
def code(x, y, z): t_0 = y * -x tmp = 0 if y <= -1.6e+204: tmp = t_0 elif y <= -3.45e+89: tmp = y * z elif y <= -3.8e+55: tmp = t_0 elif y <= -1.75e-112: tmp = y * z elif y <= 2.25e-16: tmp = x elif y <= 1.15e+174: 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 <= -1.6e+204) tmp = t_0; elseif (y <= -3.45e+89) tmp = Float64(y * z); elseif (y <= -3.8e+55) tmp = t_0; elseif (y <= -1.75e-112) tmp = Float64(y * z); elseif (y <= 2.25e-16) tmp = x; elseif (y <= 1.15e+174) 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 <= -1.6e+204) tmp = t_0; elseif (y <= -3.45e+89) tmp = y * z; elseif (y <= -3.8e+55) tmp = t_0; elseif (y <= -1.75e-112) tmp = y * z; elseif (y <= 2.25e-16) tmp = x; elseif (y <= 1.15e+174) 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, -1.6e+204], t$95$0, If[LessEqual[y, -3.45e+89], N[(y * z), $MachinePrecision], If[LessEqual[y, -3.8e+55], t$95$0, If[LessEqual[y, -1.75e-112], N[(y * z), $MachinePrecision], If[LessEqual[y, 2.25e-16], x, If[LessEqual[y, 1.15e+174], N[(y * z), $MachinePrecision], t$95$0]]]]]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := y \cdot \left(-x\right)\\
\mathbf{if}\;y \leq -1.6 \cdot 10^{+204}:\\
\;\;\;\;t_0\\
\mathbf{elif}\;y \leq -3.45 \cdot 10^{+89}:\\
\;\;\;\;y \cdot z\\
\mathbf{elif}\;y \leq -3.8 \cdot 10^{+55}:\\
\;\;\;\;t_0\\
\mathbf{elif}\;y \leq -1.75 \cdot 10^{-112}:\\
\;\;\;\;y \cdot z\\
\mathbf{elif}\;y \leq 2.25 \cdot 10^{-16}:\\
\;\;\;\;x\\
\mathbf{elif}\;y \leq 1.15 \cdot 10^{+174}:\\
\;\;\;\;y \cdot z\\
\mathbf{else}:\\
\;\;\;\;t_0\\
\end{array}
\end{array}
(FPCore (x y z) :precision binary64 (if (or (<= x -2.95e-61) (not (<= x 2.3e-26))) (* x (- 1.0 y)) (* y z)))
double code(double x, double y, double z) {
double tmp;
if ((x <= -2.95e-61) || !(x <= 2.3e-26)) {
tmp = x * (1.0 - y);
} 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 <= (-2.95d-61)) .or. (.not. (x <= 2.3d-26))) then
tmp = x * (1.0d0 - y)
else
tmp = y * z
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if ((x <= -2.95e-61) || !(x <= 2.3e-26)) {
tmp = x * (1.0 - y);
} else {
tmp = y * z;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (x <= -2.95e-61) or not (x <= 2.3e-26): tmp = x * (1.0 - y) else: tmp = y * z return tmp
function code(x, y, z) tmp = 0.0 if ((x <= -2.95e-61) || !(x <= 2.3e-26)) tmp = Float64(x * Float64(1.0 - y)); else tmp = Float64(y * z); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((x <= -2.95e-61) || ~((x <= 2.3e-26))) tmp = x * (1.0 - y); else tmp = y * z; end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[x, -2.95e-61], N[Not[LessEqual[x, 2.3e-26]], $MachinePrecision]], N[(x * N[(1.0 - y), $MachinePrecision]), $MachinePrecision], N[(y * z), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -2.95 \cdot 10^{-61} \lor \neg \left(x \leq 2.3 \cdot 10^{-26}\right):\\
\;\;\;\;x \cdot \left(1 - y\right)\\
\mathbf{else}:\\
\;\;\;\;y \cdot z\\
\end{array}
\end{array}
(FPCore (x y z) :precision binary64 (if (or (<= y -5.2e-121) (not (<= y 1.08e-14))) (* y (- z x)) x))
double code(double x, double y, double z) {
double tmp;
if ((y <= -5.2e-121) || !(y <= 1.08e-14)) {
tmp = y * (z - x);
} 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 <= (-5.2d-121)) .or. (.not. (y <= 1.08d-14))) then
tmp = y * (z - x)
else
tmp = x
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if ((y <= -5.2e-121) || !(y <= 1.08e-14)) {
tmp = y * (z - x);
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (y <= -5.2e-121) or not (y <= 1.08e-14): tmp = y * (z - x) else: tmp = x return tmp
function code(x, y, z) tmp = 0.0 if ((y <= -5.2e-121) || !(y <= 1.08e-14)) tmp = Float64(y * Float64(z - x)); else tmp = x; end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((y <= -5.2e-121) || ~((y <= 1.08e-14))) tmp = y * (z - x); else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[y, -5.2e-121], N[Not[LessEqual[y, 1.08e-14]], $MachinePrecision]], N[(y * N[(z - x), $MachinePrecision]), $MachinePrecision], x]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -5.2 \cdot 10^{-121} \lor \neg \left(y \leq 1.08 \cdot 10^{-14}\right):\\
\;\;\;\;y \cdot \left(z - x\right)\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
(FPCore (x y z) :precision binary64 (if (or (<= y -16500.0) (not (<= y 2.35e-8))) (* y (- z x)) (+ x (* y z))))
double code(double x, double y, double z) {
double tmp;
if ((y <= -16500.0) || !(y <= 2.35e-8)) {
tmp = y * (z - x);
} else {
tmp = x + (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 <= (-16500.0d0)) .or. (.not. (y <= 2.35d-8))) then
tmp = y * (z - x)
else
tmp = x + (y * z)
end if
code = tmp
end function
public static double code(double x, double y, double z) {
double tmp;
if ((y <= -16500.0) || !(y <= 2.35e-8)) {
tmp = y * (z - x);
} else {
tmp = x + (y * z);
}
return tmp;
}
def code(x, y, z): tmp = 0 if (y <= -16500.0) or not (y <= 2.35e-8): tmp = y * (z - x) else: tmp = x + (y * z) return tmp
function code(x, y, z) tmp = 0.0 if ((y <= -16500.0) || !(y <= 2.35e-8)) tmp = Float64(y * Float64(z - x)); else tmp = Float64(x + Float64(y * z)); end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((y <= -16500.0) || ~((y <= 2.35e-8))) tmp = y * (z - x); else tmp = x + (y * z); end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[y, -16500.0], N[Not[LessEqual[y, 2.35e-8]], $MachinePrecision]], N[(y * N[(z - x), $MachinePrecision]), $MachinePrecision], N[(x + N[(y * z), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -16500 \lor \neg \left(y \leq 2.35 \cdot 10^{-8}\right):\\
\;\;\;\;y \cdot \left(z - x\right)\\
\mathbf{else}:\\
\;\;\;\;x + y \cdot z\\
\end{array}
\end{array}
(FPCore (x y z) :precision binary64 (if (or (<= y -2.8e-112) (not (<= y 4.7e-14))) (* y z) x))
double code(double x, double y, double z) {
double tmp;
if ((y <= -2.8e-112) || !(y <= 4.7e-14)) {
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 <= (-2.8d-112)) .or. (.not. (y <= 4.7d-14))) 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 <= -2.8e-112) || !(y <= 4.7e-14)) {
tmp = y * z;
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z): tmp = 0 if (y <= -2.8e-112) or not (y <= 4.7e-14): tmp = y * z else: tmp = x return tmp
function code(x, y, z) tmp = 0.0 if ((y <= -2.8e-112) || !(y <= 4.7e-14)) tmp = Float64(y * z); else tmp = x; end return tmp end
function tmp_2 = code(x, y, z) tmp = 0.0; if ((y <= -2.8e-112) || ~((y <= 4.7e-14))) tmp = y * z; else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_] := If[Or[LessEqual[y, -2.8e-112], N[Not[LessEqual[y, 4.7e-14]], $MachinePrecision]], N[(y * z), $MachinePrecision], x]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -2.8 \cdot 10^{-112} \lor \neg \left(y \leq 4.7 \cdot 10^{-14}\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 2023348
(FPCore (x y z)
:name "SynthBasics:oscSampleBasedAux from YampaSynth-0.2"
:precision binary64
(+ x (* y (- z x))))