
(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 (+ 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 97.9%
(FPCore (x y z t) :precision binary64 (if (or (<= (/ z t) -0.4) (not (<= (/ z t) 1e-13))) (* x (/ (- z) t)) x))
double code(double x, double y, double z, double t) {
double tmp;
if (((z / t) <= -0.4) || !((z / t) <= 1e-13)) {
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 / t) <= (-0.4d0)) .or. (.not. ((z / t) <= 1d-13))) 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 / t) <= -0.4) || !((z / t) <= 1e-13)) {
tmp = x * (-z / t);
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if ((z / t) <= -0.4) or not ((z / t) <= 1e-13): tmp = x * (-z / t) else: tmp = x return tmp
function code(x, y, z, t) tmp = 0.0 if ((Float64(z / t) <= -0.4) || !(Float64(z / t) <= 1e-13)) 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 / t) <= -0.4) || ~(((z / t) <= 1e-13))) tmp = x * (-z / t); else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[Or[LessEqual[N[(z / t), $MachinePrecision], -0.4], N[Not[LessEqual[N[(z / t), $MachinePrecision], 1e-13]], $MachinePrecision]], N[(x * N[((-z) / t), $MachinePrecision]), $MachinePrecision], x]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;\frac{z}{t} \leq -0.4 \lor \neg \left(\frac{z}{t} \leq 10^{-13}\right):\\
\;\;\;\;x \cdot \frac{-z}{t}\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
if (/.f64 z t) < -0.40000000000000002 or 1e-13 < (/.f64 z t) Initial program 97.8%
Taylor expanded in x around inf 50.2%
mul-1-neg50.2%
unsub-neg50.2%
Simplified50.2%
Taylor expanded in z around inf 49.8%
associate-*r/49.8%
mul-1-neg49.8%
Simplified49.8%
if -0.40000000000000002 < (/.f64 z t) < 1e-13Initial program 98.1%
Taylor expanded in z around 0 74.7%
Final simplification61.4%
(FPCore (x y z t) :precision binary64 (if (or (<= (/ z t) -2e+288) (not (<= (/ z t) 4e+44))) (* x (/ z t)) x))
double code(double x, double y, double z, double t) {
double tmp;
if (((z / t) <= -2e+288) || !((z / t) <= 4e+44)) {
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 / t) <= (-2d+288)) .or. (.not. ((z / t) <= 4d+44))) 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 / t) <= -2e+288) || !((z / t) <= 4e+44)) {
tmp = x * (z / t);
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if ((z / t) <= -2e+288) or not ((z / t) <= 4e+44): tmp = x * (z / t) else: tmp = x return tmp
function code(x, y, z, t) tmp = 0.0 if ((Float64(z / t) <= -2e+288) || !(Float64(z / t) <= 4e+44)) tmp = Float64(x * Float64(z / t)); else tmp = x; end return tmp end
function tmp_2 = code(x, y, z, t) tmp = 0.0; if (((z / t) <= -2e+288) || ~(((z / t) <= 4e+44))) tmp = x * (z / t); else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[Or[LessEqual[N[(z / t), $MachinePrecision], -2e+288], N[Not[LessEqual[N[(z / t), $MachinePrecision], 4e+44]], $MachinePrecision]], N[(x * N[(z / t), $MachinePrecision]), $MachinePrecision], x]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;\frac{z}{t} \leq -2 \cdot 10^{+288} \lor \neg \left(\frac{z}{t} \leq 4 \cdot 10^{+44}\right):\\
\;\;\;\;x \cdot \frac{z}{t}\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
if (/.f64 z t) < -2e288 or 4.0000000000000004e44 < (/.f64 z t) Initial program 96.2%
Taylor expanded in x around inf 54.2%
mul-1-neg54.2%
unsub-neg54.2%
Simplified54.2%
Taylor expanded in z around inf 54.2%
associate-*r/54.2%
mul-1-neg54.2%
Simplified54.2%
div-inv54.2%
add-sqr-sqrt27.9%
sqrt-unprod33.5%
sqr-neg33.5%
sqrt-unprod6.9%
add-sqr-sqrt14.0%
Applied egg-rr14.0%
associate-*r/14.0%
*-rgt-identity14.0%
Simplified14.0%
if -2e288 < (/.f64 z t) < 4.0000000000000004e44Initial program 98.6%
Taylor expanded in z around 0 51.0%
Final simplification39.9%
(FPCore (x y z t) :precision binary64 (if (or (<= y -1.12e-39) (not (<= y 3.25e-224))) (+ x (* y (/ z t))) (* x (- 1.0 (/ z t)))))
double code(double x, double y, double z, double t) {
double tmp;
if ((y <= -1.12e-39) || !(y <= 3.25e-224)) {
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 <= (-1.12d-39)) .or. (.not. (y <= 3.25d-224))) 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 <= -1.12e-39) || !(y <= 3.25e-224)) {
tmp = x + (y * (z / t));
} else {
tmp = x * (1.0 - (z / t));
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if (y <= -1.12e-39) or not (y <= 3.25e-224): 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 <= -1.12e-39) || !(y <= 3.25e-224)) 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 <= -1.12e-39) || ~((y <= 3.25e-224))) 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, -1.12e-39], N[Not[LessEqual[y, 3.25e-224]], $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 -1.12 \cdot 10^{-39} \lor \neg \left(y \leq 3.25 \cdot 10^{-224}\right):\\
\;\;\;\;x + y \cdot \frac{z}{t}\\
\mathbf{else}:\\
\;\;\;\;x \cdot \left(1 - \frac{z}{t}\right)\\
\end{array}
\end{array}
if y < -1.12e-39 or 3.25e-224 < y Initial program 97.7%
Taylor expanded in y around inf 85.2%
associate-*r/87.3%
Simplified87.3%
if -1.12e-39 < y < 3.25e-224Initial program 98.5%
Taylor expanded in x around inf 94.5%
mul-1-neg94.5%
unsub-neg94.5%
Simplified94.5%
Final simplification89.3%
(FPCore (x y z t) :precision binary64 (if (<= y -4.9e-40) (+ x (* y (/ z t))) (if (<= y 1.16e-188) (* x (- 1.0 (/ z t))) (+ x (/ (* y z) t)))))
double code(double x, double y, double z, double t) {
double tmp;
if (y <= -4.9e-40) {
tmp = x + (y * (z / t));
} else if (y <= 1.16e-188) {
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 <= (-4.9d-40)) then
tmp = x + (y * (z / t))
else if (y <= 1.16d-188) 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 <= -4.9e-40) {
tmp = x + (y * (z / t));
} else if (y <= 1.16e-188) {
tmp = x * (1.0 - (z / t));
} else {
tmp = x + ((y * z) / t);
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if y <= -4.9e-40: tmp = x + (y * (z / t)) elif y <= 1.16e-188: 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 <= -4.9e-40) tmp = Float64(x + Float64(y * Float64(z / t))); elseif (y <= 1.16e-188) tmp = Float64(x * Float64(1.0 - Float64(z / t))); else tmp = Float64(x + Float64(Float64(y * z) / t)); end return tmp end
function tmp_2 = code(x, y, z, t) tmp = 0.0; if (y <= -4.9e-40) tmp = x + (y * (z / t)); elseif (y <= 1.16e-188) 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, -4.9e-40], N[(x + N[(y * N[(z / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[y, 1.16e-188], N[(x * N[(1.0 - N[(z / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(x + N[(N[(y * z), $MachinePrecision] / t), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -4.9 \cdot 10^{-40}:\\
\;\;\;\;x + y \cdot \frac{z}{t}\\
\mathbf{elif}\;y \leq 1.16 \cdot 10^{-188}:\\
\;\;\;\;x \cdot \left(1 - \frac{z}{t}\right)\\
\mathbf{else}:\\
\;\;\;\;x + \frac{y \cdot z}{t}\\
\end{array}
\end{array}
if y < -4.8999999999999997e-40Initial program 98.4%
Taylor expanded in y around inf 87.8%
associate-*r/91.7%
Simplified91.7%
if -4.8999999999999997e-40 < y < 1.16e-188Initial program 98.6%
Taylor expanded in x around inf 94.8%
mul-1-neg94.8%
unsub-neg94.8%
Simplified94.8%
if 1.16e-188 < y Initial program 97.1%
Taylor expanded in y around inf 84.6%
(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 97.9%
Taylor expanded in y around 0 90.0%
mul-1-neg90.0%
associate-/l*90.7%
distribute-lft-neg-out90.7%
associate-*r/90.9%
distribute-rgt-in97.9%
+-commutative97.9%
sub-neg97.9%
associate-*l/93.6%
associate-/l*94.3%
Simplified94.3%
(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 97.9%
Taylor expanded in x around inf 62.0%
mul-1-neg62.0%
unsub-neg62.0%
Simplified62.0%
(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 97.9%
Taylor expanded in z around 0 36.3%
(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 2024170
(FPCore (x y z t)
:name "Graphics.Rendering.Plot.Render.Plot.Axis:tickPosition from plot-0.2.3.4"
:precision binary64
:alt
(! :herbie-platform default (if (< (* (- y x) (/ z t)) -10136466924358867/10000) (+ x (/ (- y x) (/ t z))) (if (< (* (- y x) (/ z t)) 0) (+ x (/ (* (- y x) z) t)) (+ x (/ (- y x) (/ t z))))))
(+ x (* (- y x) (/ z t))))