
(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 97.1%
+-commutative97.1%
fma-def97.1%
Simplified97.1%
Final simplification97.1%
(FPCore (x y z t) :precision binary64 (if (or (<= x -3.3e-75) (not (<= x 95.0))) (* x (- 1.0 (/ z t))) (+ x (* z (/ y t)))))
double code(double x, double y, double z, double t) {
double tmp;
if ((x <= -3.3e-75) || !(x <= 95.0)) {
tmp = x * (1.0 - (z / t));
} else {
tmp = x + (z * (y / 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 ((x <= (-3.3d-75)) .or. (.not. (x <= 95.0d0))) then
tmp = x * (1.0d0 - (z / t))
else
tmp = x + (z * (y / t))
end if
code = tmp
end function
public static double code(double x, double y, double z, double t) {
double tmp;
if ((x <= -3.3e-75) || !(x <= 95.0)) {
tmp = x * (1.0 - (z / t));
} else {
tmp = x + (z * (y / t));
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if (x <= -3.3e-75) or not (x <= 95.0): tmp = x * (1.0 - (z / t)) else: tmp = x + (z * (y / t)) return tmp
function code(x, y, z, t) tmp = 0.0 if ((x <= -3.3e-75) || !(x <= 95.0)) tmp = Float64(x * Float64(1.0 - Float64(z / t))); else tmp = Float64(x + Float64(z * Float64(y / t))); end return tmp end
function tmp_2 = code(x, y, z, t) tmp = 0.0; if ((x <= -3.3e-75) || ~((x <= 95.0))) tmp = x * (1.0 - (z / t)); else tmp = x + (z * (y / t)); end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[Or[LessEqual[x, -3.3e-75], N[Not[LessEqual[x, 95.0]], $MachinePrecision]], N[(x * N[(1.0 - N[(z / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(x + N[(z * N[(y / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x \leq -3.3 \cdot 10^{-75} \lor \neg \left(x \leq 95\right):\\
\;\;\;\;x \cdot \left(1 - \frac{z}{t}\right)\\
\mathbf{else}:\\
\;\;\;\;x + z \cdot \frac{y}{t}\\
\end{array}
\end{array}
if x < -3.3e-75 or 95 < x Initial program 99.9%
+-commutative99.9%
fma-def100.0%
Simplified100.0%
Taylor expanded in y around 0 85.7%
mul-1-neg85.7%
unsub-neg85.7%
*-rgt-identity85.7%
associate-*r/88.4%
distribute-lft-out--88.4%
Simplified88.4%
if -3.3e-75 < x < 95Initial program 93.4%
Taylor expanded in y around inf 84.6%
associate-/l*87.7%
associate-/r/86.5%
Simplified86.5%
Final simplification87.6%
(FPCore (x y z t) :precision binary64 (if (or (<= x -3.1e-75) (not (<= x 820.0))) (* x (- 1.0 (/ z t))) (+ x (* y (/ z t)))))
double code(double x, double y, double z, double t) {
double tmp;
if ((x <= -3.1e-75) || !(x <= 820.0)) {
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 ((x <= (-3.1d-75)) .or. (.not. (x <= 820.0d0))) 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 ((x <= -3.1e-75) || !(x <= 820.0)) {
tmp = x * (1.0 - (z / t));
} else {
tmp = x + (y * (z / t));
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if (x <= -3.1e-75) or not (x <= 820.0): tmp = x * (1.0 - (z / t)) else: tmp = x + (y * (z / t)) return tmp
function code(x, y, z, t) tmp = 0.0 if ((x <= -3.1e-75) || !(x <= 820.0)) 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 ((x <= -3.1e-75) || ~((x <= 820.0))) tmp = x * (1.0 - (z / t)); else tmp = x + (y * (z / t)); end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[Or[LessEqual[x, -3.1e-75], N[Not[LessEqual[x, 820.0]], $MachinePrecision]], 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}\;x \leq -3.1 \cdot 10^{-75} \lor \neg \left(x \leq 820\right):\\
\;\;\;\;x \cdot \left(1 - \frac{z}{t}\right)\\
\mathbf{else}:\\
\;\;\;\;x + y \cdot \frac{z}{t}\\
\end{array}
\end{array}
if x < -3.10000000000000007e-75 or 820 < x Initial program 99.9%
+-commutative99.9%
fma-def100.0%
Simplified100.0%
Taylor expanded in y around 0 85.7%
mul-1-neg85.7%
unsub-neg85.7%
*-rgt-identity85.7%
associate-*r/88.4%
distribute-lft-out--88.4%
Simplified88.4%
if -3.10000000000000007e-75 < x < 820Initial program 93.4%
Taylor expanded in y around inf 84.6%
*-commutative84.6%
Simplified84.6%
associate-/l*86.5%
associate-/r/87.7%
Applied egg-rr87.7%
Final simplification88.1%
(FPCore (x y z t) :precision binary64 (if (or (<= x -2.5e-75) (not (<= x 1150.0))) (* x (- 1.0 (/ z t))) (+ x (/ y (/ t z)))))
double code(double x, double y, double z, double t) {
double tmp;
if ((x <= -2.5e-75) || !(x <= 1150.0)) {
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 ((x <= (-2.5d-75)) .or. (.not. (x <= 1150.0d0))) 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 ((x <= -2.5e-75) || !(x <= 1150.0)) {
tmp = x * (1.0 - (z / t));
} else {
tmp = x + (y / (t / z));
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if (x <= -2.5e-75) or not (x <= 1150.0): tmp = x * (1.0 - (z / t)) else: tmp = x + (y / (t / z)) return tmp
function code(x, y, z, t) tmp = 0.0 if ((x <= -2.5e-75) || !(x <= 1150.0)) 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 ((x <= -2.5e-75) || ~((x <= 1150.0))) tmp = x * (1.0 - (z / t)); else tmp = x + (y / (t / z)); end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[Or[LessEqual[x, -2.5e-75], N[Not[LessEqual[x, 1150.0]], $MachinePrecision]], 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}\;x \leq -2.5 \cdot 10^{-75} \lor \neg \left(x \leq 1150\right):\\
\;\;\;\;x \cdot \left(1 - \frac{z}{t}\right)\\
\mathbf{else}:\\
\;\;\;\;x + \frac{y}{\frac{t}{z}}\\
\end{array}
\end{array}
if x < -2.49999999999999989e-75 or 1150 < x Initial program 99.9%
+-commutative99.9%
fma-def100.0%
Simplified100.0%
Taylor expanded in y around 0 85.7%
mul-1-neg85.7%
unsub-neg85.7%
*-rgt-identity85.7%
associate-*r/88.4%
distribute-lft-out--88.4%
Simplified88.4%
if -2.49999999999999989e-75 < x < 1150Initial program 93.4%
Taylor expanded in y around inf 84.6%
associate-/l*87.7%
associate-/r/86.5%
Simplified86.5%
associate-/r/87.7%
Applied egg-rr87.7%
Final simplification88.1%
(FPCore (x y z t) :precision binary64 (if (or (<= z -1.5e+65) (not (<= z 2.7e+18))) (* x (/ (- z) t)) x))
double code(double x, double y, double z, double t) {
double tmp;
if ((z <= -1.5e+65) || !(z <= 2.7e+18)) {
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 <= (-1.5d+65)) .or. (.not. (z <= 2.7d+18))) 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 <= -1.5e+65) || !(z <= 2.7e+18)) {
tmp = x * (-z / t);
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if (z <= -1.5e+65) or not (z <= 2.7e+18): tmp = x * (-z / t) else: tmp = x return tmp
function code(x, y, z, t) tmp = 0.0 if ((z <= -1.5e+65) || !(z <= 2.7e+18)) 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 <= -1.5e+65) || ~((z <= 2.7e+18))) tmp = x * (-z / t); else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[Or[LessEqual[z, -1.5e+65], N[Not[LessEqual[z, 2.7e+18]], $MachinePrecision]], N[(x * N[((-z) / t), $MachinePrecision]), $MachinePrecision], x]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;z \leq -1.5 \cdot 10^{+65} \lor \neg \left(z \leq 2.7 \cdot 10^{+18}\right):\\
\;\;\;\;x \cdot \frac{-z}{t}\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
if z < -1.5000000000000001e65 or 2.7e18 < z Initial program 95.6%
Taylor expanded in y around 0 62.8%
mul-1-neg62.8%
associate-/l*65.4%
distribute-neg-frac65.4%
Simplified65.4%
distribute-frac-neg65.4%
unsub-neg65.4%
associate-/r/65.5%
add-sqr-sqrt33.3%
sqrt-unprod35.9%
sqr-neg35.9%
sqrt-unprod7.4%
add-sqr-sqrt13.7%
*-commutative13.7%
add-sqr-sqrt7.4%
sqrt-unprod35.9%
sqr-neg35.9%
sqrt-unprod33.3%
add-sqr-sqrt65.5%
Applied egg-rr65.5%
clear-num65.5%
un-div-inv65.5%
Applied egg-rr65.5%
Taylor expanded in z around inf 54.1%
mul-1-neg54.1%
associate-*r/54.9%
distribute-rgt-neg-in54.9%
distribute-neg-frac54.9%
Simplified54.9%
if -1.5000000000000001e65 < z < 2.7e18Initial program 98.2%
+-commutative98.2%
fma-def98.2%
Simplified98.2%
Taylor expanded in z around 0 57.8%
Final simplification56.6%
(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 97.1%
Final simplification97.1%
(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 97.1%
+-commutative97.1%
fma-def97.1%
Simplified97.1%
Taylor expanded in y around 0 66.0%
mul-1-neg66.0%
unsub-neg66.0%
*-rgt-identity66.0%
associate-*r/67.5%
distribute-lft-out--67.5%
Simplified67.5%
Final simplification67.5%
(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 97.1%
+-commutative97.1%
fma-def97.1%
Simplified97.1%
Taylor expanded in z around 0 38.6%
Final simplification38.6%
(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 2024024
(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))))