
(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}
Sampling outcomes in binary64 precision:
Herbie found 8 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(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}
(FPCore (x y z t) :precision binary64 (fma (- y x) (/ z t) x))
double code(double x, double y, double z, double t) {
return fma((y - x), (z / t), x);
}
function code(x, y, z, t) return fma(Float64(y - x), Float64(z / t), x) end
code[x_, y_, z_, t_] := N[(N[(y - x), $MachinePrecision] * N[(z / t), $MachinePrecision] + x), $MachinePrecision]
\begin{array}{l}
\\
\mathsf{fma}\left(y - x, \frac{z}{t}, x\right)
\end{array}
Initial program 98.3%
+-commutative98.3%
fma-define98.3%
Simplified98.3%
(FPCore (x y z t) :precision binary64 (if (or (<= (/ z t) -100000.0) (not (<= (/ z t) 1e+51))) (* z (- (/ y t) (/ x t))) (+ x (* y (/ z t)))))
double code(double x, double y, double z, double t) {
double tmp;
if (((z / t) <= -100000.0) || !((z / t) <= 1e+51)) {
tmp = z * ((y / t) - (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 / t) <= (-100000.0d0)) .or. (.not. ((z / t) <= 1d+51))) then
tmp = z * ((y / t) - (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 / t) <= -100000.0) || !((z / t) <= 1e+51)) {
tmp = z * ((y / t) - (x / t));
} else {
tmp = x + (y * (z / t));
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if ((z / t) <= -100000.0) or not ((z / t) <= 1e+51): tmp = z * ((y / t) - (x / t)) else: tmp = x + (y * (z / t)) return tmp
function code(x, y, z, t) tmp = 0.0 if ((Float64(z / t) <= -100000.0) || !(Float64(z / t) <= 1e+51)) tmp = Float64(z * Float64(Float64(y / t) - Float64(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 / t) <= -100000.0) || ~(((z / t) <= 1e+51))) tmp = z * ((y / t) - (x / t)); else tmp = x + (y * (z / t)); end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[Or[LessEqual[N[(z / t), $MachinePrecision], -100000.0], N[Not[LessEqual[N[(z / t), $MachinePrecision], 1e+51]], $MachinePrecision]], N[(z * N[(N[(y / t), $MachinePrecision] - N[(x / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(x + N[(y * N[(z / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;\frac{z}{t} \leq -100000 \lor \neg \left(\frac{z}{t} \leq 10^{+51}\right):\\
\;\;\;\;z \cdot \left(\frac{y}{t} - \frac{x}{t}\right)\\
\mathbf{else}:\\
\;\;\;\;x + y \cdot \frac{z}{t}\\
\end{array}
\end{array}
if (/.f64 z t) < -1e5 or 1e51 < (/.f64 z t) Initial program 97.6%
Taylor expanded in z around inf 92.1%
if -1e5 < (/.f64 z t) < 1e51Initial program 99.1%
Taylor expanded in y around inf 96.2%
associate-*r/98.2%
Simplified98.2%
Final simplification95.2%
(FPCore (x y z t) :precision binary64 (if (or (<= y -5400000000000.0) (not (<= y 1.15e-12))) (+ x (* y (/ z t))) (* x (- 1.0 (/ z t)))))
double code(double x, double y, double z, double t) {
double tmp;
if ((y <= -5400000000000.0) || !(y <= 1.15e-12)) {
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 <= (-5400000000000.0d0)) .or. (.not. (y <= 1.15d-12))) 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 <= -5400000000000.0) || !(y <= 1.15e-12)) {
tmp = x + (y * (z / t));
} else {
tmp = x * (1.0 - (z / t));
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if (y <= -5400000000000.0) or not (y <= 1.15e-12): 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 <= -5400000000000.0) || !(y <= 1.15e-12)) 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 <= -5400000000000.0) || ~((y <= 1.15e-12))) 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, -5400000000000.0], N[Not[LessEqual[y, 1.15e-12]], $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 -5400000000000 \lor \neg \left(y \leq 1.15 \cdot 10^{-12}\right):\\
\;\;\;\;x + y \cdot \frac{z}{t}\\
\mathbf{else}:\\
\;\;\;\;x \cdot \left(1 - \frac{z}{t}\right)\\
\end{array}
\end{array}
if y < -5.4e12 or 1.14999999999999995e-12 < y Initial program 98.9%
Taylor expanded in y around inf 88.7%
associate-*r/92.4%
Simplified92.4%
if -5.4e12 < y < 1.14999999999999995e-12Initial program 97.8%
Taylor expanded in x around inf 89.0%
mul-1-neg89.0%
unsub-neg89.0%
Simplified89.0%
Final simplification90.6%
(FPCore (x y z t) :precision binary64 (if (or (<= y -1.95e+168) (not (<= y 2.6e+127))) (* z (/ y t)) (* x (- 1.0 (/ z t)))))
double code(double x, double y, double z, double t) {
double tmp;
if ((y <= -1.95e+168) || !(y <= 2.6e+127)) {
tmp = z * (y / 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 <= (-1.95d+168)) .or. (.not. (y <= 2.6d+127))) then
tmp = z * (y / 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 <= -1.95e+168) || !(y <= 2.6e+127)) {
tmp = z * (y / t);
} else {
tmp = x * (1.0 - (z / t));
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if (y <= -1.95e+168) or not (y <= 2.6e+127): tmp = z * (y / t) else: tmp = x * (1.0 - (z / t)) return tmp
function code(x, y, z, t) tmp = 0.0 if ((y <= -1.95e+168) || !(y <= 2.6e+127)) tmp = Float64(z * Float64(y / 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 <= -1.95e+168) || ~((y <= 2.6e+127))) tmp = z * (y / t); else tmp = x * (1.0 - (z / t)); end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[Or[LessEqual[y, -1.95e+168], N[Not[LessEqual[y, 2.6e+127]], $MachinePrecision]], N[(z * N[(y / t), $MachinePrecision]), $MachinePrecision], N[(x * N[(1.0 - N[(z / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -1.95 \cdot 10^{+168} \lor \neg \left(y \leq 2.6 \cdot 10^{+127}\right):\\
\;\;\;\;z \cdot \frac{y}{t}\\
\mathbf{else}:\\
\;\;\;\;x \cdot \left(1 - \frac{z}{t}\right)\\
\end{array}
\end{array}
if y < -1.95e168 or 2.6000000000000002e127 < y Initial program 99.3%
Taylor expanded in y around inf 89.2%
*-commutative89.2%
associate-/l*90.8%
Simplified90.8%
Taylor expanded in z around inf 84.6%
+-commutative84.6%
Simplified84.6%
Taylor expanded in y around inf 75.2%
if -1.95e168 < y < 2.6000000000000002e127Initial program 98.0%
Taylor expanded in x around inf 79.3%
mul-1-neg79.3%
unsub-neg79.3%
Simplified79.3%
Final simplification78.3%
(FPCore (x y z t) :precision binary64 (if (<= y -1.7e+15) (+ x (/ (* y z) t)) (if (<= y 2.3e-13) (* x (- 1.0 (/ z t))) (+ x (* y (/ z t))))))
double code(double x, double y, double z, double t) {
double tmp;
if (y <= -1.7e+15) {
tmp = x + ((y * z) / t);
} else if (y <= 2.3e-13) {
tmp = x * (1.0 - (z / 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 (y <= (-1.7d+15)) then
tmp = x + ((y * z) / t)
else if (y <= 2.3d-13) then
tmp = x * (1.0d0 - (z / 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 (y <= -1.7e+15) {
tmp = x + ((y * z) / t);
} else if (y <= 2.3e-13) {
tmp = x * (1.0 - (z / t));
} else {
tmp = x + (y * (z / t));
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if y <= -1.7e+15: tmp = x + ((y * z) / t) elif y <= 2.3e-13: tmp = x * (1.0 - (z / t)) else: tmp = x + (y * (z / t)) return tmp
function code(x, y, z, t) tmp = 0.0 if (y <= -1.7e+15) tmp = Float64(x + Float64(Float64(y * z) / t)); elseif (y <= 2.3e-13) tmp = Float64(x * Float64(1.0 - Float64(z / 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 (y <= -1.7e+15) tmp = x + ((y * z) / t); elseif (y <= 2.3e-13) tmp = x * (1.0 - (z / t)); else tmp = x + (y * (z / t)); end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[LessEqual[y, -1.7e+15], N[(x + N[(N[(y * z), $MachinePrecision] / t), $MachinePrecision]), $MachinePrecision], If[LessEqual[y, 2.3e-13], N[(x * N[(1.0 - N[(z / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(x + N[(y * N[(z / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -1.7 \cdot 10^{+15}:\\
\;\;\;\;x + \frac{y \cdot z}{t}\\
\mathbf{elif}\;y \leq 2.3 \cdot 10^{-13}:\\
\;\;\;\;x \cdot \left(1 - \frac{z}{t}\right)\\
\mathbf{else}:\\
\;\;\;\;x + y \cdot \frac{z}{t}\\
\end{array}
\end{array}
if y < -1.7e15Initial program 98.2%
Taylor expanded in y around inf 93.4%
if -1.7e15 < y < 2.29999999999999979e-13Initial program 97.8%
Taylor expanded in x around inf 89.0%
mul-1-neg89.0%
unsub-neg89.0%
Simplified89.0%
if 2.29999999999999979e-13 < y Initial program 99.4%
Taylor expanded in y around inf 85.6%
associate-*r/92.8%
Simplified92.8%
(FPCore (x y z t) :precision binary64 (if (or (<= z -3.1e+46) (not (<= z 3.5e-56))) (* z (/ y t)) x))
double code(double x, double y, double z, double t) {
double tmp;
if ((z <= -3.1e+46) || !(z <= 3.5e-56)) {
tmp = z * (y / 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 <= (-3.1d+46)) .or. (.not. (z <= 3.5d-56))) then
tmp = z * (y / 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 <= -3.1e+46) || !(z <= 3.5e-56)) {
tmp = z * (y / t);
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if (z <= -3.1e+46) or not (z <= 3.5e-56): tmp = z * (y / t) else: tmp = x return tmp
function code(x, y, z, t) tmp = 0.0 if ((z <= -3.1e+46) || !(z <= 3.5e-56)) tmp = Float64(z * Float64(y / t)); else tmp = x; end return tmp end
function tmp_2 = code(x, y, z, t) tmp = 0.0; if ((z <= -3.1e+46) || ~((z <= 3.5e-56))) tmp = z * (y / t); else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[Or[LessEqual[z, -3.1e+46], N[Not[LessEqual[z, 3.5e-56]], $MachinePrecision]], N[(z * N[(y / t), $MachinePrecision]), $MachinePrecision], x]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -3.1 \cdot 10^{+46} \lor \neg \left(z \leq 3.5 \cdot 10^{-56}\right):\\
\;\;\;\;z \cdot \frac{y}{t}\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
if z < -3.09999999999999975e46 or 3.4999999999999998e-56 < z Initial program 97.6%
Taylor expanded in y around inf 60.9%
*-commutative60.9%
associate-/l*63.8%
Simplified63.8%
Taylor expanded in z around inf 63.6%
+-commutative63.6%
Simplified63.6%
Taylor expanded in y around inf 48.2%
if -3.09999999999999975e46 < z < 3.4999999999999998e-56Initial program 99.1%
Taylor expanded in z around 0 66.0%
Final simplification56.8%
(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 98.3%
(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 98.3%
Taylor expanded in z around 0 41.1%
(FPCore (x y z t)
:precision binary64
(let* ((t_1 (* (- y x) (/ z t))) (t_2 (+ x (/ (- y x) (/ t z)))))
(if (< t_1 -1013646692435.8867)
t_2
(if (< t_1 0.0) (+ x (/ (* (- y x) z) t)) t_2))))
double code(double x, double y, double z, double t) {
double t_1 = (y - x) * (z / t);
double t_2 = x + ((y - x) / (t / z));
double tmp;
if (t_1 < -1013646692435.8867) {
tmp = t_2;
} else if (t_1 < 0.0) {
tmp = x + (((y - x) * z) / t);
} else {
tmp = t_2;
}
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) :: t_1
real(8) :: t_2
real(8) :: tmp
t_1 = (y - x) * (z / t)
t_2 = x + ((y - x) / (t / z))
if (t_1 < (-1013646692435.8867d0)) then
tmp = t_2
else if (t_1 < 0.0d0) then
tmp = x + (((y - x) * z) / t)
else
tmp = t_2
end if
code = tmp
end function
public static double code(double x, double y, double z, double t) {
double t_1 = (y - x) * (z / t);
double t_2 = x + ((y - x) / (t / z));
double tmp;
if (t_1 < -1013646692435.8867) {
tmp = t_2;
} else if (t_1 < 0.0) {
tmp = x + (((y - x) * z) / t);
} else {
tmp = t_2;
}
return tmp;
}
def code(x, y, z, t): t_1 = (y - x) * (z / t) t_2 = x + ((y - x) / (t / z)) tmp = 0 if t_1 < -1013646692435.8867: tmp = t_2 elif t_1 < 0.0: tmp = x + (((y - x) * z) / t) else: tmp = t_2 return tmp
function code(x, y, z, t) t_1 = Float64(Float64(y - x) * Float64(z / t)) t_2 = Float64(x + Float64(Float64(y - x) / Float64(t / z))) tmp = 0.0 if (t_1 < -1013646692435.8867) tmp = t_2; elseif (t_1 < 0.0) tmp = Float64(x + Float64(Float64(Float64(y - x) * z) / t)); else tmp = t_2; end return tmp end
function tmp_2 = code(x, y, z, t) t_1 = (y - x) * (z / t); t_2 = x + ((y - x) / (t / z)); tmp = 0.0; if (t_1 < -1013646692435.8867) tmp = t_2; elseif (t_1 < 0.0) tmp = x + (((y - x) * z) / t); else tmp = t_2; end tmp_2 = tmp; end
code[x_, y_, z_, t_] := Block[{t$95$1 = N[(N[(y - x), $MachinePrecision] * N[(z / t), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$2 = N[(x + N[(N[(y - x), $MachinePrecision] / N[(t / z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[Less[t$95$1, -1013646692435.8867], t$95$2, If[Less[t$95$1, 0.0], N[(x + N[(N[(N[(y - x), $MachinePrecision] * z), $MachinePrecision] / t), $MachinePrecision]), $MachinePrecision], t$95$2]]]]
\begin{array}{l}
\\
\begin{array}{l}
t_1 := \left(y - x\right) \cdot \frac{z}{t}\\
t_2 := x + \frac{y - x}{\frac{t}{z}}\\
\mathbf{if}\;t\_1 < -1013646692435.8867:\\
\;\;\;\;t\_2\\
\mathbf{elif}\;t\_1 < 0:\\
\;\;\;\;x + \frac{\left(y - x\right) \cdot z}{t}\\
\mathbf{else}:\\
\;\;\;\;t\_2\\
\end{array}
\end{array}
herbie shell --seed 2024108
(FPCore (x y z t)
:name "Graphics.Rendering.Plot.Render.Plot.Axis:tickPosition from plot-0.2.3.4"
:precision binary64
:alt
(if (< (* (- y x) (/ z t)) -1013646692435.8867) (+ x (/ (- y x) (/ t z))) (if (< (* (- y x) (/ z t)) 0.0) (+ x (/ (* (- y x) z) t)) (+ x (/ (- y x) (/ t z)))))
(+ x (* (- y x) (/ z t))))