
(FPCore (x y z t) :precision binary64 (+ x (/ (* (- y x) z) t)))
double code(double x, double y, double z, double t) {
return x + (((y - x) * z) / t);
}
real(8) function code(x, y, z, t)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8), intent (in) :: t
code = x + (((y - x) * z) / t)
end function
public static double code(double x, double y, double z, double t) {
return x + (((y - x) * z) / t);
}
def code(x, y, z, t): return x + (((y - x) * z) / t)
function code(x, y, z, t) return Float64(x + Float64(Float64(Float64(y - x) * z) / t)) end
function tmp = code(x, y, z, t) tmp = x + (((y - x) * z) / t); end
code[x_, y_, z_, t_] := N[(x + N[(N[(N[(y - x), $MachinePrecision] * z), $MachinePrecision] / t), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x + \frac{\left(y - x\right) \cdot z}{t}
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 7 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y z t) :precision binary64 (+ x (/ (* (- y x) z) t)))
double code(double x, double y, double z, double t) {
return x + (((y - x) * z) / t);
}
real(8) function code(x, y, z, t)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8), intent (in) :: t
code = x + (((y - x) * z) / t)
end function
public static double code(double x, double y, double z, double t) {
return x + (((y - x) * z) / t);
}
def code(x, y, z, t): return x + (((y - x) * z) / t)
function code(x, y, z, t) return Float64(x + Float64(Float64(Float64(y - x) * z) / t)) end
function tmp = code(x, y, z, t) tmp = x + (((y - x) * z) / t); end
code[x_, y_, z_, t_] := N[(x + N[(N[(N[(y - x), $MachinePrecision] * z), $MachinePrecision] / t), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x + \frac{\left(y - x\right) \cdot z}{t}
\end{array}
(FPCore (x y z t) :precision binary64 (+ x (* (- y x) (/ z t))))
double code(double x, double y, double z, double t) {
return x + ((y - x) * (z / t));
}
real(8) function code(x, y, z, t)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8), intent (in) :: t
code = x + ((y - x) * (z / t))
end function
public static double code(double x, double y, double z, double t) {
return x + ((y - x) * (z / t));
}
def code(x, y, z, t): return x + ((y - x) * (z / t))
function code(x, y, z, t) return Float64(x + Float64(Float64(y - x) * Float64(z / t))) end
function tmp = code(x, y, z, t) tmp = x + ((y - x) * (z / t)); end
code[x_, y_, z_, t_] := N[(x + N[(N[(y - x), $MachinePrecision] * N[(z / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x + \left(y - x\right) \cdot \frac{z}{t}
\end{array}
Initial program 94.3%
associate-/l*98.8%
Simplified98.8%
Final simplification98.8%
(FPCore (x y z t) :precision binary64 (if (or (<= z -2.45e-180) (not (<= z 1.9e-125))) (+ x (* z (/ (- y x) t))) (+ x (* y (/ z t)))))
double code(double x, double y, double z, double t) {
double tmp;
if ((z <= -2.45e-180) || !(z <= 1.9e-125)) {
tmp = x + (z * ((y - x) / t));
} else {
tmp = x + (y * (z / t));
}
return tmp;
}
real(8) function code(x, y, z, t)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8), intent (in) :: t
real(8) :: tmp
if ((z <= (-2.45d-180)) .or. (.not. (z <= 1.9d-125))) then
tmp = x + (z * ((y - x) / t))
else
tmp = x + (y * (z / t))
end if
code = tmp
end function
public static double code(double x, double y, double z, double t) {
double tmp;
if ((z <= -2.45e-180) || !(z <= 1.9e-125)) {
tmp = x + (z * ((y - x) / t));
} else {
tmp = x + (y * (z / t));
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if (z <= -2.45e-180) or not (z <= 1.9e-125): tmp = x + (z * ((y - x) / t)) else: tmp = x + (y * (z / t)) return tmp
function code(x, y, z, t) tmp = 0.0 if ((z <= -2.45e-180) || !(z <= 1.9e-125)) tmp = Float64(x + Float64(z * Float64(Float64(y - x) / t))); else tmp = Float64(x + Float64(y * Float64(z / t))); end return tmp end
function tmp_2 = code(x, y, z, t) tmp = 0.0; if ((z <= -2.45e-180) || ~((z <= 1.9e-125))) tmp = x + (z * ((y - x) / t)); else tmp = x + (y * (z / t)); end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[Or[LessEqual[z, -2.45e-180], N[Not[LessEqual[z, 1.9e-125]], $MachinePrecision]], N[(x + N[(z * N[(N[(y - x), $MachinePrecision] / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(x + N[(y * N[(z / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -2.45 \cdot 10^{-180} \lor \neg \left(z \leq 1.9 \cdot 10^{-125}\right):\\
\;\;\;\;x + z \cdot \frac{y - x}{t}\\
\mathbf{else}:\\
\;\;\;\;x + y \cdot \frac{z}{t}\\
\end{array}
\end{array}
if z < -2.4500000000000001e-180 or 1.9000000000000001e-125 < z Initial program 92.8%
*-commutative92.8%
associate-/l*96.9%
Applied egg-rr96.9%
if -2.4500000000000001e-180 < z < 1.9000000000000001e-125Initial program 98.4%
associate-/l*99.9%
Simplified99.9%
Taylor expanded in y around inf 89.5%
associate-*r/89.6%
Simplified89.6%
Final simplification94.9%
(FPCore (x y z t) :precision binary64 (if (or (<= y -8.5e-89) (not (<= y 1.1e+37))) (+ x (* y (/ z t))) (* x (- 1.0 (/ z t)))))
double code(double x, double y, double z, double t) {
double tmp;
if ((y <= -8.5e-89) || !(y <= 1.1e+37)) {
tmp = x + (y * (z / t));
} else {
tmp = x * (1.0 - (z / t));
}
return tmp;
}
real(8) function code(x, y, z, t)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8), intent (in) :: t
real(8) :: tmp
if ((y <= (-8.5d-89)) .or. (.not. (y <= 1.1d+37))) then
tmp = x + (y * (z / t))
else
tmp = x * (1.0d0 - (z / t))
end if
code = tmp
end function
public static double code(double x, double y, double z, double t) {
double tmp;
if ((y <= -8.5e-89) || !(y <= 1.1e+37)) {
tmp = x + (y * (z / t));
} else {
tmp = x * (1.0 - (z / t));
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if (y <= -8.5e-89) or not (y <= 1.1e+37): tmp = x + (y * (z / t)) else: tmp = x * (1.0 - (z / t)) return tmp
function code(x, y, z, t) tmp = 0.0 if ((y <= -8.5e-89) || !(y <= 1.1e+37)) tmp = Float64(x + Float64(y * Float64(z / t))); else tmp = Float64(x * Float64(1.0 - Float64(z / t))); end return tmp end
function tmp_2 = code(x, y, z, t) tmp = 0.0; if ((y <= -8.5e-89) || ~((y <= 1.1e+37))) tmp = x + (y * (z / t)); else tmp = x * (1.0 - (z / t)); end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[Or[LessEqual[y, -8.5e-89], N[Not[LessEqual[y, 1.1e+37]], $MachinePrecision]], N[(x + N[(y * N[(z / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(x * N[(1.0 - N[(z / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -8.5 \cdot 10^{-89} \lor \neg \left(y \leq 1.1 \cdot 10^{+37}\right):\\
\;\;\;\;x + y \cdot \frac{z}{t}\\
\mathbf{else}:\\
\;\;\;\;x \cdot \left(1 - \frac{z}{t}\right)\\
\end{array}
\end{array}
if y < -8.49999999999999937e-89 or 1.1e37 < y Initial program 93.0%
associate-/l*99.8%
Simplified99.8%
Taylor expanded in y around inf 85.9%
associate-*r/91.4%
Simplified91.4%
if -8.49999999999999937e-89 < y < 1.1e37Initial program 95.9%
associate-/l*97.5%
Simplified97.5%
Taylor expanded in y around 0 86.2%
*-commutative86.2%
associate-*l/89.5%
neg-mul-189.5%
distribute-rgt-neg-out89.5%
Simplified89.5%
Taylor expanded in x around 0 89.5%
mul-1-neg89.5%
unsub-neg89.5%
Simplified89.5%
Final simplification90.5%
(FPCore (x y z t) :precision binary64 (if (or (<= y -1.1e-89) (not (<= y 1.2e+37))) (+ x (* y (/ z t))) (- x (* x (/ z t)))))
double code(double x, double y, double z, double t) {
double tmp;
if ((y <= -1.1e-89) || !(y <= 1.2e+37)) {
tmp = x + (y * (z / t));
} else {
tmp = x - (x * (z / t));
}
return tmp;
}
real(8) function code(x, y, z, t)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8), intent (in) :: t
real(8) :: tmp
if ((y <= (-1.1d-89)) .or. (.not. (y <= 1.2d+37))) then
tmp = x + (y * (z / t))
else
tmp = x - (x * (z / t))
end if
code = tmp
end function
public static double code(double x, double y, double z, double t) {
double tmp;
if ((y <= -1.1e-89) || !(y <= 1.2e+37)) {
tmp = x + (y * (z / t));
} else {
tmp = x - (x * (z / t));
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if (y <= -1.1e-89) or not (y <= 1.2e+37): tmp = x + (y * (z / t)) else: tmp = x - (x * (z / t)) return tmp
function code(x, y, z, t) tmp = 0.0 if ((y <= -1.1e-89) || !(y <= 1.2e+37)) tmp = Float64(x + Float64(y * Float64(z / t))); else tmp = Float64(x - Float64(x * Float64(z / t))); end return tmp end
function tmp_2 = code(x, y, z, t) tmp = 0.0; if ((y <= -1.1e-89) || ~((y <= 1.2e+37))) tmp = x + (y * (z / t)); else tmp = x - (x * (z / t)); end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[Or[LessEqual[y, -1.1e-89], N[Not[LessEqual[y, 1.2e+37]], $MachinePrecision]], N[(x + N[(y * N[(z / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(x - N[(x * N[(z / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -1.1 \cdot 10^{-89} \lor \neg \left(y \leq 1.2 \cdot 10^{+37}\right):\\
\;\;\;\;x + y \cdot \frac{z}{t}\\
\mathbf{else}:\\
\;\;\;\;x - x \cdot \frac{z}{t}\\
\end{array}
\end{array}
if y < -1.10000000000000006e-89 or 1.2e37 < y Initial program 93.0%
associate-/l*99.8%
Simplified99.8%
Taylor expanded in y around inf 85.9%
associate-*r/91.4%
Simplified91.4%
if -1.10000000000000006e-89 < y < 1.2e37Initial program 95.9%
associate-/l*97.5%
Simplified97.5%
Taylor expanded in y around 0 86.2%
*-commutative86.2%
associate-*l/89.5%
neg-mul-189.5%
distribute-rgt-neg-out89.5%
Simplified89.5%
Final simplification90.5%
(FPCore (x y z t) :precision binary64 (if (or (<= z -350000000000.0) (not (<= z 1.95e-16))) (* x (/ (- z) t)) x))
double code(double x, double y, double z, double t) {
double tmp;
if ((z <= -350000000000.0) || !(z <= 1.95e-16)) {
tmp = x * (-z / t);
} else {
tmp = x;
}
return tmp;
}
real(8) function code(x, y, z, t)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8), intent (in) :: t
real(8) :: tmp
if ((z <= (-350000000000.0d0)) .or. (.not. (z <= 1.95d-16))) then
tmp = x * (-z / t)
else
tmp = x
end if
code = tmp
end function
public static double code(double x, double y, double z, double t) {
double tmp;
if ((z <= -350000000000.0) || !(z <= 1.95e-16)) {
tmp = x * (-z / t);
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if (z <= -350000000000.0) or not (z <= 1.95e-16): tmp = x * (-z / t) else: tmp = x return tmp
function code(x, y, z, t) tmp = 0.0 if ((z <= -350000000000.0) || !(z <= 1.95e-16)) tmp = Float64(x * Float64(Float64(-z) / t)); else tmp = x; end return tmp end
function tmp_2 = code(x, y, z, t) tmp = 0.0; if ((z <= -350000000000.0) || ~((z <= 1.95e-16))) tmp = x * (-z / t); else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[Or[LessEqual[z, -350000000000.0], N[Not[LessEqual[z, 1.95e-16]], $MachinePrecision]], N[(x * N[((-z) / t), $MachinePrecision]), $MachinePrecision], x]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -350000000000 \lor \neg \left(z \leq 1.95 \cdot 10^{-16}\right):\\
\;\;\;\;x \cdot \frac{-z}{t}\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
if z < -3.5e11 or 1.94999999999999989e-16 < z Initial program 87.5%
associate-/l*97.3%
Simplified97.3%
Taylor expanded in y around 0 44.8%
*-commutative44.8%
associate-*l/52.0%
neg-mul-152.0%
distribute-rgt-neg-out52.0%
Simplified52.0%
Taylor expanded in x around 0 52.0%
mul-1-neg52.0%
unsub-neg52.0%
Simplified52.0%
Taylor expanded in z around 0 44.8%
mul-1-neg44.8%
*-commutative44.8%
associate-*r/48.4%
sub-neg48.4%
Simplified48.4%
Taylor expanded in z around inf 38.1%
mul-1-neg38.1%
associate-*l/39.0%
distribute-rgt-neg-in39.0%
associate-*l/38.1%
associate-*r/42.6%
Simplified42.6%
if -3.5e11 < z < 1.94999999999999989e-16Initial program 99.2%
associate-/l*99.8%
Simplified99.8%
Taylor expanded in y around 0 71.1%
*-commutative71.1%
associate-*l/71.8%
neg-mul-171.8%
distribute-rgt-neg-out71.8%
Simplified71.8%
Taylor expanded in z around 0 59.6%
Final simplification52.5%
(FPCore (x y z t) :precision binary64 (* x (- 1.0 (/ z t))))
double code(double x, double y, double z, double t) {
return x * (1.0 - (z / t));
}
real(8) function code(x, y, z, t)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8), intent (in) :: t
code = x * (1.0d0 - (z / t))
end function
public static double code(double x, double y, double z, double t) {
return x * (1.0 - (z / t));
}
def code(x, y, z, t): return x * (1.0 - (z / t))
function code(x, y, z, t) return Float64(x * Float64(1.0 - Float64(z / t))) end
function tmp = code(x, y, z, t) tmp = x * (1.0 - (z / t)); end
code[x_, y_, z_, t_] := N[(x * N[(1.0 - N[(z / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x \cdot \left(1 - \frac{z}{t}\right)
\end{array}
Initial program 94.3%
associate-/l*98.8%
Simplified98.8%
Taylor expanded in y around 0 60.1%
*-commutative60.1%
associate-*l/63.5%
neg-mul-163.5%
distribute-rgt-neg-out63.5%
Simplified63.5%
Taylor expanded in x around 0 63.5%
mul-1-neg63.5%
unsub-neg63.5%
Simplified63.5%
Final simplification63.5%
(FPCore (x y z t) :precision binary64 x)
double code(double x, double y, double z, double t) {
return x;
}
real(8) function code(x, y, z, t)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8), intent (in) :: t
code = x
end function
public static double code(double x, double y, double z, double t) {
return x;
}
def code(x, y, z, t): return x
function code(x, y, z, t) return x end
function tmp = code(x, y, z, t) tmp = x; end
code[x_, y_, z_, t_] := x
\begin{array}{l}
\\
x
\end{array}
Initial program 94.3%
associate-/l*98.8%
Simplified98.8%
Taylor expanded in y around 0 60.1%
*-commutative60.1%
associate-*l/63.5%
neg-mul-163.5%
distribute-rgt-neg-out63.5%
Simplified63.5%
Taylor expanded in z around 0 39.4%
Final simplification39.4%
(FPCore (x y z t)
:precision binary64
(if (< x -9.025511195533005e-135)
(- x (* (/ z t) (- x y)))
(if (< x 4.275032163700715e-250)
(+ x (* (/ (- y x) t) z))
(+ x (/ (- y x) (/ t z))))))
double code(double x, double y, double z, double t) {
double tmp;
if (x < -9.025511195533005e-135) {
tmp = x - ((z / t) * (x - y));
} else if (x < 4.275032163700715e-250) {
tmp = x + (((y - x) / t) * z);
} else {
tmp = x + ((y - x) / (t / z));
}
return tmp;
}
real(8) function code(x, y, z, t)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8), intent (in) :: z
real(8), intent (in) :: t
real(8) :: tmp
if (x < (-9.025511195533005d-135)) then
tmp = x - ((z / t) * (x - y))
else if (x < 4.275032163700715d-250) then
tmp = x + (((y - x) / t) * z)
else
tmp = x + ((y - x) / (t / z))
end if
code = tmp
end function
public static double code(double x, double y, double z, double t) {
double tmp;
if (x < -9.025511195533005e-135) {
tmp = x - ((z / t) * (x - y));
} else if (x < 4.275032163700715e-250) {
tmp = x + (((y - x) / t) * z);
} else {
tmp = x + ((y - x) / (t / z));
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if x < -9.025511195533005e-135: tmp = x - ((z / t) * (x - y)) elif x < 4.275032163700715e-250: tmp = x + (((y - x) / t) * z) else: tmp = x + ((y - x) / (t / z)) return tmp
function code(x, y, z, t) tmp = 0.0 if (x < -9.025511195533005e-135) tmp = Float64(x - Float64(Float64(z / t) * Float64(x - y))); elseif (x < 4.275032163700715e-250) tmp = Float64(x + Float64(Float64(Float64(y - x) / t) * z)); else tmp = Float64(x + Float64(Float64(y - x) / Float64(t / z))); end return tmp end
function tmp_2 = code(x, y, z, t) tmp = 0.0; if (x < -9.025511195533005e-135) tmp = x - ((z / t) * (x - y)); elseif (x < 4.275032163700715e-250) tmp = x + (((y - x) / t) * z); else tmp = x + ((y - x) / (t / z)); end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[Less[x, -9.025511195533005e-135], N[(x - N[(N[(z / t), $MachinePrecision] * N[(x - y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[Less[x, 4.275032163700715e-250], N[(x + N[(N[(N[(y - x), $MachinePrecision] / t), $MachinePrecision] * z), $MachinePrecision]), $MachinePrecision], N[(x + N[(N[(y - x), $MachinePrecision] / N[(t / z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x < -9.025511195533005 \cdot 10^{-135}:\\
\;\;\;\;x - \frac{z}{t} \cdot \left(x - y\right)\\
\mathbf{elif}\;x < 4.275032163700715 \cdot 10^{-250}:\\
\;\;\;\;x + \frac{y - x}{t} \cdot z\\
\mathbf{else}:\\
\;\;\;\;x + \frac{y - x}{\frac{t}{z}}\\
\end{array}
\end{array}
herbie shell --seed 2024071
(FPCore (x y z t)
:name "Numeric.Histogram:binBounds from Chart-1.5.3"
:precision binary64
:alt
(if (< x -9.025511195533005e-135) (- x (* (/ z t) (- x y))) (if (< x 4.275032163700715e-250) (+ x (* (/ (- y x) t) z)) (+ x (/ (- y x) (/ t z)))))
(+ x (/ (* (- y x) z) t)))