
(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 (if (<= (/ z t) -1e+138) (+ x (* z (/ (- y x) t))) (fma (- y x) (/ z t) x)))
double code(double x, double y, double z, double t) {
double tmp;
if ((z / t) <= -1e+138) {
tmp = x + (z * ((y - x) / t));
} else {
tmp = fma((y - x), (z / t), x);
}
return tmp;
}
function code(x, y, z, t) tmp = 0.0 if (Float64(z / t) <= -1e+138) tmp = Float64(x + Float64(z * Float64(Float64(y - x) / t))); else tmp = fma(Float64(y - x), Float64(z / t), x); end return tmp end
code[x_, y_, z_, t_] := If[LessEqual[N[(z / t), $MachinePrecision], -1e+138], N[(x + N[(z * N[(N[(y - x), $MachinePrecision] / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(N[(y - x), $MachinePrecision] * N[(z / t), $MachinePrecision] + x), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;\frac{z}{t} \leq -1 \cdot 10^{+138}:\\
\;\;\;\;x + z \cdot \frac{y - x}{t}\\
\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(y - x, \frac{z}{t}, x\right)\\
\end{array}
\end{array}
if (/.f64 z t) < -1e138Initial program 86.8%
Taylor expanded in y around 0 84.1%
+-commutative84.1%
mul-1-neg84.1%
sub-neg84.1%
associate-/l*70.0%
associate-/l*71.8%
div-sub88.7%
Simplified88.7%
associate-/r/99.9%
Applied egg-rr99.9%
if -1e138 < (/.f64 z t) Initial program 98.4%
+-commutative98.4%
fma-def98.4%
Simplified98.4%
Final simplification98.7%
(FPCore (x y z t) :precision binary64 (if (or (<= (/ z t) -10000000000.0) (not (<= (/ z t) 4e+15))) (* z (- (/ y t) (/ x t))) (+ x (* (/ z t) y))))
double code(double x, double y, double z, double t) {
double tmp;
if (((z / t) <= -10000000000.0) || !((z / t) <= 4e+15)) {
tmp = z * ((y / t) - (x / t));
} else {
tmp = x + ((z / t) * y);
}
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) <= (-10000000000.0d0)) .or. (.not. ((z / t) <= 4d+15))) then
tmp = z * ((y / t) - (x / t))
else
tmp = x + ((z / t) * y)
end if
code = tmp
end function
public static double code(double x, double y, double z, double t) {
double tmp;
if (((z / t) <= -10000000000.0) || !((z / t) <= 4e+15)) {
tmp = z * ((y / t) - (x / t));
} else {
tmp = x + ((z / t) * y);
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if ((z / t) <= -10000000000.0) or not ((z / t) <= 4e+15): tmp = z * ((y / t) - (x / t)) else: tmp = x + ((z / t) * y) return tmp
function code(x, y, z, t) tmp = 0.0 if ((Float64(z / t) <= -10000000000.0) || !(Float64(z / t) <= 4e+15)) tmp = Float64(z * Float64(Float64(y / t) - Float64(x / t))); else tmp = Float64(x + Float64(Float64(z / t) * y)); end return tmp end
function tmp_2 = code(x, y, z, t) tmp = 0.0; if (((z / t) <= -10000000000.0) || ~(((z / t) <= 4e+15))) tmp = z * ((y / t) - (x / t)); else tmp = x + ((z / t) * y); end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[Or[LessEqual[N[(z / t), $MachinePrecision], -10000000000.0], N[Not[LessEqual[N[(z / t), $MachinePrecision], 4e+15]], $MachinePrecision]], N[(z * N[(N[(y / t), $MachinePrecision] - N[(x / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(x + N[(N[(z / t), $MachinePrecision] * y), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;\frac{z}{t} \leq -10000000000 \lor \neg \left(\frac{z}{t} \leq 4 \cdot 10^{+15}\right):\\
\;\;\;\;z \cdot \left(\frac{y}{t} - \frac{x}{t}\right)\\
\mathbf{else}:\\
\;\;\;\;x + \frac{z}{t} \cdot y\\
\end{array}
\end{array}
if (/.f64 z t) < -1e10 or 4e15 < (/.f64 z t) Initial program 93.7%
Taylor expanded in z around inf 92.0%
if -1e10 < (/.f64 z t) < 4e15Initial program 98.9%
Taylor expanded in y around inf 94.8%
associate-*r/97.7%
Simplified97.7%
Final simplification94.9%
(FPCore (x y z t) :precision binary64 (if (or (<= y -2.45e-110) (not (<= y 4.4e-8))) (+ x (* (/ z t) y)) (* x (- 1.0 (/ z t)))))
double code(double x, double y, double z, double t) {
double tmp;
if ((y <= -2.45e-110) || !(y <= 4.4e-8)) {
tmp = x + ((z / t) * y);
} 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 <= (-2.45d-110)) .or. (.not. (y <= 4.4d-8))) then
tmp = x + ((z / t) * y)
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 <= -2.45e-110) || !(y <= 4.4e-8)) {
tmp = x + ((z / t) * y);
} else {
tmp = x * (1.0 - (z / t));
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if (y <= -2.45e-110) or not (y <= 4.4e-8): tmp = x + ((z / t) * y) else: tmp = x * (1.0 - (z / t)) return tmp
function code(x, y, z, t) tmp = 0.0 if ((y <= -2.45e-110) || !(y <= 4.4e-8)) tmp = Float64(x + Float64(Float64(z / t) * y)); 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 <= -2.45e-110) || ~((y <= 4.4e-8))) tmp = x + ((z / t) * y); else tmp = x * (1.0 - (z / t)); end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[Or[LessEqual[y, -2.45e-110], N[Not[LessEqual[y, 4.4e-8]], $MachinePrecision]], N[(x + N[(N[(z / t), $MachinePrecision] * y), $MachinePrecision]), $MachinePrecision], N[(x * N[(1.0 - N[(z / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -2.45 \cdot 10^{-110} \lor \neg \left(y \leq 4.4 \cdot 10^{-8}\right):\\
\;\;\;\;x + \frac{z}{t} \cdot y\\
\mathbf{else}:\\
\;\;\;\;x \cdot \left(1 - \frac{z}{t}\right)\\
\end{array}
\end{array}
if y < -2.4499999999999999e-110 or 4.3999999999999997e-8 < y Initial program 99.0%
Taylor expanded in y around inf 85.6%
associate-*r/90.7%
Simplified90.7%
if -2.4499999999999999e-110 < y < 4.3999999999999997e-8Initial program 92.4%
Taylor expanded in x around inf 85.5%
mul-1-neg85.5%
unsub-neg85.5%
Simplified85.5%
Final simplification88.7%
(FPCore (x y z t) :precision binary64 (if (or (<= y -1.6e-100) (not (<= y 7.2e-10))) (+ x (* (/ z t) y)) (- x (/ x (/ t z)))))
double code(double x, double y, double z, double t) {
double tmp;
if ((y <= -1.6e-100) || !(y <= 7.2e-10)) {
tmp = x + ((z / t) * y);
} else {
tmp = x - (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 ((y <= (-1.6d-100)) .or. (.not. (y <= 7.2d-10))) then
tmp = x + ((z / t) * y)
else
tmp = x - (x / (t / z))
end if
code = tmp
end function
public static double code(double x, double y, double z, double t) {
double tmp;
if ((y <= -1.6e-100) || !(y <= 7.2e-10)) {
tmp = x + ((z / t) * y);
} else {
tmp = x - (x / (t / z));
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if (y <= -1.6e-100) or not (y <= 7.2e-10): tmp = x + ((z / t) * y) else: tmp = x - (x / (t / z)) return tmp
function code(x, y, z, t) tmp = 0.0 if ((y <= -1.6e-100) || !(y <= 7.2e-10)) tmp = Float64(x + Float64(Float64(z / t) * y)); else tmp = Float64(x - Float64(x / Float64(t / z))); end return tmp end
function tmp_2 = code(x, y, z, t) tmp = 0.0; if ((y <= -1.6e-100) || ~((y <= 7.2e-10))) tmp = x + ((z / t) * y); else tmp = x - (x / (t / z)); end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[Or[LessEqual[y, -1.6e-100], N[Not[LessEqual[y, 7.2e-10]], $MachinePrecision]], N[(x + N[(N[(z / t), $MachinePrecision] * y), $MachinePrecision]), $MachinePrecision], N[(x - N[(x / N[(t / z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -1.6 \cdot 10^{-100} \lor \neg \left(y \leq 7.2 \cdot 10^{-10}\right):\\
\;\;\;\;x + \frac{z}{t} \cdot y\\
\mathbf{else}:\\
\;\;\;\;x - \frac{x}{\frac{t}{z}}\\
\end{array}
\end{array}
if y < -1.60000000000000008e-100 or 7.2e-10 < y Initial program 99.0%
Taylor expanded in y around inf 85.6%
associate-*r/90.7%
Simplified90.7%
if -1.60000000000000008e-100 < y < 7.2e-10Initial program 92.4%
Taylor expanded in y around 0 81.6%
mul-1-neg81.6%
associate-/l*85.6%
Simplified85.6%
Final simplification88.7%
(FPCore (x y z t) :precision binary64 (if (<= (/ z t) -1e+138) (+ x (* z (/ (- y x) t))) (+ x (* (/ z t) (- y x)))))
double code(double x, double y, double z, double t) {
double tmp;
if ((z / t) <= -1e+138) {
tmp = x + (z * ((y - x) / t));
} else {
tmp = x + ((z / t) * (y - 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 / t) <= (-1d+138)) then
tmp = x + (z * ((y - x) / t))
else
tmp = x + ((z / t) * (y - x))
end if
code = tmp
end function
public static double code(double x, double y, double z, double t) {
double tmp;
if ((z / t) <= -1e+138) {
tmp = x + (z * ((y - x) / t));
} else {
tmp = x + ((z / t) * (y - x));
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if (z / t) <= -1e+138: tmp = x + (z * ((y - x) / t)) else: tmp = x + ((z / t) * (y - x)) return tmp
function code(x, y, z, t) tmp = 0.0 if (Float64(z / t) <= -1e+138) tmp = Float64(x + Float64(z * Float64(Float64(y - x) / t))); else tmp = Float64(x + Float64(Float64(z / t) * Float64(y - x))); end return tmp end
function tmp_2 = code(x, y, z, t) tmp = 0.0; if ((z / t) <= -1e+138) tmp = x + (z * ((y - x) / t)); else tmp = x + ((z / t) * (y - x)); end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[LessEqual[N[(z / t), $MachinePrecision], -1e+138], N[(x + N[(z * N[(N[(y - x), $MachinePrecision] / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(x + N[(N[(z / t), $MachinePrecision] * N[(y - x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;\frac{z}{t} \leq -1 \cdot 10^{+138}:\\
\;\;\;\;x + z \cdot \frac{y - x}{t}\\
\mathbf{else}:\\
\;\;\;\;x + \frac{z}{t} \cdot \left(y - x\right)\\
\end{array}
\end{array}
if (/.f64 z t) < -1e138Initial program 86.8%
Taylor expanded in y around 0 84.1%
+-commutative84.1%
mul-1-neg84.1%
sub-neg84.1%
associate-/l*70.0%
associate-/l*71.8%
div-sub88.7%
Simplified88.7%
associate-/r/99.9%
Applied egg-rr99.9%
if -1e138 < (/.f64 z t) Initial program 98.4%
Final simplification98.7%
(FPCore (x y z t) :precision binary64 (+ x (* (/ z t) (- y x))))
double code(double x, double y, double z, double t) {
return x + ((z / t) * (y - 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 + ((z / t) * (y - x))
end function
public static double code(double x, double y, double z, double t) {
return x + ((z / t) * (y - x));
}
def code(x, y, z, t): return x + ((z / t) * (y - x))
function code(x, y, z, t) return Float64(x + Float64(Float64(z / t) * Float64(y - x))) end
function tmp = code(x, y, z, t) tmp = x + ((z / t) * (y - x)); end
code[x_, y_, z_, t_] := N[(x + N[(N[(z / t), $MachinePrecision] * N[(y - x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x + \frac{z}{t} \cdot \left(y - x\right)
\end{array}
Initial program 96.4%
Final simplification96.4%
(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 96.4%
Taylor expanded in x around inf 63.7%
mul-1-neg63.7%
unsub-neg63.7%
Simplified63.7%
Final simplification63.7%
(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 96.4%
Taylor expanded in z around 0 40.0%
Final simplification40.0%
(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 2024031
(FPCore (x y z t)
:name "Graphics.Rendering.Plot.Render.Plot.Axis:tickPosition from plot-0.2.3.4"
:precision binary64
:herbie-target
(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))))