
(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 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(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 97.6%
+-commutative97.6%
fma-define97.6%
Simplified97.6%
Final simplification97.6%
(FPCore (x y z t)
:precision binary64
(if (or (<= y -5e+20)
(not (or (<= y -0.175) (and (not (<= y -9e-88)) (<= y 8.6e-10)))))
(+ x (* y (/ z t)))
(* x (- 1.0 (/ z t)))))
double code(double x, double y, double z, double t) {
double tmp;
if ((y <= -5e+20) || !((y <= -0.175) || (!(y <= -9e-88) && (y <= 8.6e-10)))) {
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 <= (-5d+20)) .or. (.not. (y <= (-0.175d0)) .or. (.not. (y <= (-9d-88))) .and. (y <= 8.6d-10))) 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 <= -5e+20) || !((y <= -0.175) || (!(y <= -9e-88) && (y <= 8.6e-10)))) {
tmp = x + (y * (z / t));
} else {
tmp = x * (1.0 - (z / t));
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if (y <= -5e+20) or not ((y <= -0.175) or (not (y <= -9e-88) and (y <= 8.6e-10))): 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 <= -5e+20) || !((y <= -0.175) || (!(y <= -9e-88) && (y <= 8.6e-10)))) 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 <= -5e+20) || ~(((y <= -0.175) || (~((y <= -9e-88)) && (y <= 8.6e-10))))) 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, -5e+20], N[Not[Or[LessEqual[y, -0.175], And[N[Not[LessEqual[y, -9e-88]], $MachinePrecision], LessEqual[y, 8.6e-10]]]], $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 -5 \cdot 10^{+20} \lor \neg \left(y \leq -0.175 \lor \neg \left(y \leq -9 \cdot 10^{-88}\right) \land y \leq 8.6 \cdot 10^{-10}\right):\\
\;\;\;\;x + y \cdot \frac{z}{t}\\
\mathbf{else}:\\
\;\;\;\;x \cdot \left(1 - \frac{z}{t}\right)\\
\end{array}
\end{array}
if y < -5e20 or -0.17499999999999999 < y < -8.99999999999999982e-88 or 8.60000000000000029e-10 < y Initial program 99.0%
Taylor expanded in y around inf 88.6%
associate-*r/93.2%
Simplified93.2%
if -5e20 < y < -0.17499999999999999 or -8.99999999999999982e-88 < y < 8.60000000000000029e-10Initial program 95.9%
Taylor expanded in x around inf 86.2%
mul-1-neg86.2%
unsub-neg86.2%
Simplified86.2%
Final simplification90.0%
(FPCore (x y z t)
:precision binary64
(if (<= y -5e+20)
(+ x (* y (/ z t)))
(if (or (<= y -0.72) (and (not (<= y -1.05e-74)) (<= y 1.4e-10)))
(* x (- 1.0 (/ z t)))
(+ x (/ y (/ t z))))))
double code(double x, double y, double z, double t) {
double tmp;
if (y <= -5e+20) {
tmp = x + (y * (z / t));
} else if ((y <= -0.72) || (!(y <= -1.05e-74) && (y <= 1.4e-10))) {
tmp = x * (1.0 - (z / t));
} else {
tmp = x + (y / (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 (y <= (-5d+20)) then
tmp = x + (y * (z / t))
else if ((y <= (-0.72d0)) .or. (.not. (y <= (-1.05d-74))) .and. (y <= 1.4d-10)) then
tmp = x * (1.0d0 - (z / t))
else
tmp = x + (y / (t / z))
end if
code = tmp
end function
public static double code(double x, double y, double z, double t) {
double tmp;
if (y <= -5e+20) {
tmp = x + (y * (z / t));
} else if ((y <= -0.72) || (!(y <= -1.05e-74) && (y <= 1.4e-10))) {
tmp = x * (1.0 - (z / t));
} else {
tmp = x + (y / (t / z));
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if y <= -5e+20: tmp = x + (y * (z / t)) elif (y <= -0.72) or (not (y <= -1.05e-74) and (y <= 1.4e-10)): tmp = x * (1.0 - (z / t)) else: tmp = x + (y / (t / z)) return tmp
function code(x, y, z, t) tmp = 0.0 if (y <= -5e+20) tmp = Float64(x + Float64(y * Float64(z / t))); elseif ((y <= -0.72) || (!(y <= -1.05e-74) && (y <= 1.4e-10))) tmp = Float64(x * Float64(1.0 - Float64(z / t))); else tmp = Float64(x + Float64(y / Float64(t / z))); end return tmp end
function tmp_2 = code(x, y, z, t) tmp = 0.0; if (y <= -5e+20) tmp = x + (y * (z / t)); elseif ((y <= -0.72) || (~((y <= -1.05e-74)) && (y <= 1.4e-10))) tmp = x * (1.0 - (z / t)); else tmp = x + (y / (t / z)); end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[LessEqual[y, -5e+20], N[(x + N[(y * N[(z / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[Or[LessEqual[y, -0.72], And[N[Not[LessEqual[y, -1.05e-74]], $MachinePrecision], LessEqual[y, 1.4e-10]]], N[(x * N[(1.0 - N[(z / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(x + N[(y / N[(t / z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -5 \cdot 10^{+20}:\\
\;\;\;\;x + y \cdot \frac{z}{t}\\
\mathbf{elif}\;y \leq -0.72 \lor \neg \left(y \leq -1.05 \cdot 10^{-74}\right) \land y \leq 1.4 \cdot 10^{-10}:\\
\;\;\;\;x \cdot \left(1 - \frac{z}{t}\right)\\
\mathbf{else}:\\
\;\;\;\;x + \frac{y}{\frac{t}{z}}\\
\end{array}
\end{array}
if y < -5e20Initial program 97.9%
Taylor expanded in y around inf 88.4%
associate-*r/93.0%
Simplified93.0%
if -5e20 < y < -0.71999999999999997 or -1.05e-74 < y < 1.40000000000000008e-10Initial program 95.9%
Taylor expanded in x around inf 86.2%
mul-1-neg86.2%
unsub-neg86.2%
Simplified86.2%
if -0.71999999999999997 < y < -1.05e-74 or 1.40000000000000008e-10 < y Initial program 99.9%
Taylor expanded in y around inf 88.8%
associate-*r/93.4%
Simplified93.4%
clear-num93.4%
div-inv93.4%
Applied egg-rr93.4%
Final simplification90.0%
(FPCore (x y z t) :precision binary64 (+ x (* z (/ (- y x) t))))
double code(double x, double y, double z, double t) {
return x + (z * ((y - x) / 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 + (z * ((y - x) / t))
end function
public static double code(double x, double y, double z, double t) {
return x + (z * ((y - x) / t));
}
def code(x, y, z, t): return x + (z * ((y - x) / t))
function code(x, y, z, t) return Float64(x + Float64(z * Float64(Float64(y - x) / t))) end
function tmp = code(x, y, z, t) tmp = x + (z * ((y - x) / t)); end
code[x_, y_, z_, t_] := N[(x + N[(z * N[(N[(y - x), $MachinePrecision] / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x + z \cdot \frac{y - x}{t}
\end{array}
Initial program 97.6%
Taylor expanded in y around 0 90.9%
+-commutative90.9%
mul-1-neg90.9%
unsub-neg90.9%
associate-*r/89.8%
associate-/l*90.1%
distribute-rgt-out--97.6%
associate-*l/95.7%
associate-/l*94.8%
Simplified94.8%
Final simplification94.8%
(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 97.6%
Final simplification97.6%
(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 97.6%
Taylor expanded in x around inf 65.6%
mul-1-neg65.6%
unsub-neg65.6%
Simplified65.6%
Final simplification65.6%
(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 97.6%
Taylor expanded in z around 0 35.7%
Final simplification35.7%
(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 2024066
(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))))