
(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 9 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) (/ t z))))
double code(double x, double y, double z, double t) {
return x + ((y - x) / (t / z));
}
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) / (t / z))
end function
public static double code(double x, double y, double z, double t) {
return x + ((y - x) / (t / z));
}
def code(x, y, z, t): return x + ((y - x) / (t / z))
function code(x, y, z, t) return Float64(x + Float64(Float64(y - x) / Float64(t / z))) end
function tmp = code(x, y, z, t) tmp = x + ((y - x) / (t / z)); end
code[x_, y_, z_, t_] := N[(x + N[(N[(y - x), $MachinePrecision] / N[(t / z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x + \frac{y - x}{\frac{t}{z}}
\end{array}
Initial program 98.5%
clear-numN/A
un-div-invN/A
/-lowering-/.f64N/A
--lowering--.f64N/A
/-lowering-/.f6498.6
Applied egg-rr98.6%
(FPCore (x y z t) :precision binary64 (let* ((t_1 (/ (* (- y x) z) t))) (if (<= (/ z t) -2e+40) t_1 (if (<= (/ z t) 4e-15) (fma (/ z t) y x) t_1))))
double code(double x, double y, double z, double t) {
double t_1 = ((y - x) * z) / t;
double tmp;
if ((z / t) <= -2e+40) {
tmp = t_1;
} else if ((z / t) <= 4e-15) {
tmp = fma((z / t), y, x);
} else {
tmp = t_1;
}
return tmp;
}
function code(x, y, z, t) t_1 = Float64(Float64(Float64(y - x) * z) / t) tmp = 0.0 if (Float64(z / t) <= -2e+40) tmp = t_1; elseif (Float64(z / t) <= 4e-15) tmp = fma(Float64(z / t), y, x); else tmp = t_1; end return tmp end
code[x_, y_, z_, t_] := Block[{t$95$1 = N[(N[(N[(y - x), $MachinePrecision] * z), $MachinePrecision] / t), $MachinePrecision]}, If[LessEqual[N[(z / t), $MachinePrecision], -2e+40], t$95$1, If[LessEqual[N[(z / t), $MachinePrecision], 4e-15], N[(N[(z / t), $MachinePrecision] * y + x), $MachinePrecision], t$95$1]]]
\begin{array}{l}
\\
\begin{array}{l}
t_1 := \frac{\left(y - x\right) \cdot z}{t}\\
\mathbf{if}\;\frac{z}{t} \leq -2 \cdot 10^{+40}:\\
\;\;\;\;t\_1\\
\mathbf{elif}\;\frac{z}{t} \leq 4 \cdot 10^{-15}:\\
\;\;\;\;\mathsf{fma}\left(\frac{z}{t}, y, x\right)\\
\mathbf{else}:\\
\;\;\;\;t\_1\\
\end{array}
\end{array}
if (/.f64 z t) < -2.00000000000000006e40 or 4.0000000000000003e-15 < (/.f64 z t) Initial program 97.7%
+-commutativeN/A
+-lowering-+.f64N/A
associate-*r/N/A
/-lowering-/.f64N/A
*-lowering-*.f64N/A
--lowering--.f6497.0
Applied egg-rr97.0%
clear-numN/A
associate-/r*N/A
clear-numN/A
/-lowering-/.f64N/A
/-lowering-/.f64N/A
--lowering--.f6494.8
Applied egg-rr94.8%
Taylor expanded in z around inf
div-subN/A
associate-/l*N/A
/-lowering-/.f64N/A
*-lowering-*.f64N/A
--lowering--.f6496.5
Simplified96.5%
if -2.00000000000000006e40 < (/.f64 z t) < 4.0000000000000003e-15Initial program 99.5%
Taylor expanded in y around inf
Simplified96.8%
+-commutativeN/A
*-commutativeN/A
accelerator-lowering-fma.f64N/A
/-lowering-/.f6496.8
Applied egg-rr96.8%
Final simplification96.6%
(FPCore (x y z t) :precision binary64 (let* ((t_1 (* y (/ z t)))) (if (<= (/ z t) -2e-36) t_1 (if (<= (/ z t) 4e-15) x t_1))))
double code(double x, double y, double z, double t) {
double t_1 = y * (z / t);
double tmp;
if ((z / t) <= -2e-36) {
tmp = t_1;
} else if ((z / t) <= 4e-15) {
tmp = x;
} else {
tmp = t_1;
}
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) :: tmp
t_1 = y * (z / t)
if ((z / t) <= (-2d-36)) then
tmp = t_1
else if ((z / t) <= 4d-15) then
tmp = x
else
tmp = t_1
end if
code = tmp
end function
public static double code(double x, double y, double z, double t) {
double t_1 = y * (z / t);
double tmp;
if ((z / t) <= -2e-36) {
tmp = t_1;
} else if ((z / t) <= 4e-15) {
tmp = x;
} else {
tmp = t_1;
}
return tmp;
}
def code(x, y, z, t): t_1 = y * (z / t) tmp = 0 if (z / t) <= -2e-36: tmp = t_1 elif (z / t) <= 4e-15: tmp = x else: tmp = t_1 return tmp
function code(x, y, z, t) t_1 = Float64(y * Float64(z / t)) tmp = 0.0 if (Float64(z / t) <= -2e-36) tmp = t_1; elseif (Float64(z / t) <= 4e-15) tmp = x; else tmp = t_1; end return tmp end
function tmp_2 = code(x, y, z, t) t_1 = y * (z / t); tmp = 0.0; if ((z / t) <= -2e-36) tmp = t_1; elseif ((z / t) <= 4e-15) tmp = x; else tmp = t_1; end tmp_2 = tmp; end
code[x_, y_, z_, t_] := Block[{t$95$1 = N[(y * N[(z / t), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[N[(z / t), $MachinePrecision], -2e-36], t$95$1, If[LessEqual[N[(z / t), $MachinePrecision], 4e-15], x, t$95$1]]]
\begin{array}{l}
\\
\begin{array}{l}
t_1 := y \cdot \frac{z}{t}\\
\mathbf{if}\;\frac{z}{t} \leq -2 \cdot 10^{-36}:\\
\;\;\;\;t\_1\\
\mathbf{elif}\;\frac{z}{t} \leq 4 \cdot 10^{-15}:\\
\;\;\;\;x\\
\mathbf{else}:\\
\;\;\;\;t\_1\\
\end{array}
\end{array}
if (/.f64 z t) < -1.9999999999999999e-36 or 4.0000000000000003e-15 < (/.f64 z t) Initial program 97.9%
Taylor expanded in x around 0
+-rgt-identityN/A
associate-/l*N/A
accelerator-lowering-fma.f64N/A
/-lowering-/.f6457.7
Simplified57.7%
+-rgt-identityN/A
*-commutativeN/A
*-lowering-*.f64N/A
/-lowering-/.f6457.7
Applied egg-rr57.7%
if -1.9999999999999999e-36 < (/.f64 z t) < 4.0000000000000003e-15Initial program 99.4%
Taylor expanded in z around 0
Simplified78.5%
Final simplification66.7%
(FPCore (x y z t) :precision binary64 (let* ((t_1 (* z (/ y t)))) (if (<= (/ z t) -5e+15) t_1 (if (<= (/ z t) 4e-15) x t_1))))
double code(double x, double y, double z, double t) {
double t_1 = z * (y / t);
double tmp;
if ((z / t) <= -5e+15) {
tmp = t_1;
} else if ((z / t) <= 4e-15) {
tmp = x;
} else {
tmp = t_1;
}
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) :: tmp
t_1 = z * (y / t)
if ((z / t) <= (-5d+15)) then
tmp = t_1
else if ((z / t) <= 4d-15) then
tmp = x
else
tmp = t_1
end if
code = tmp
end function
public static double code(double x, double y, double z, double t) {
double t_1 = z * (y / t);
double tmp;
if ((z / t) <= -5e+15) {
tmp = t_1;
} else if ((z / t) <= 4e-15) {
tmp = x;
} else {
tmp = t_1;
}
return tmp;
}
def code(x, y, z, t): t_1 = z * (y / t) tmp = 0 if (z / t) <= -5e+15: tmp = t_1 elif (z / t) <= 4e-15: tmp = x else: tmp = t_1 return tmp
function code(x, y, z, t) t_1 = Float64(z * Float64(y / t)) tmp = 0.0 if (Float64(z / t) <= -5e+15) tmp = t_1; elseif (Float64(z / t) <= 4e-15) tmp = x; else tmp = t_1; end return tmp end
function tmp_2 = code(x, y, z, t) t_1 = z * (y / t); tmp = 0.0; if ((z / t) <= -5e+15) tmp = t_1; elseif ((z / t) <= 4e-15) tmp = x; else tmp = t_1; end tmp_2 = tmp; end
code[x_, y_, z_, t_] := Block[{t$95$1 = N[(z * N[(y / t), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[N[(z / t), $MachinePrecision], -5e+15], t$95$1, If[LessEqual[N[(z / t), $MachinePrecision], 4e-15], x, t$95$1]]]
\begin{array}{l}
\\
\begin{array}{l}
t_1 := z \cdot \frac{y}{t}\\
\mathbf{if}\;\frac{z}{t} \leq -5 \cdot 10^{+15}:\\
\;\;\;\;t\_1\\
\mathbf{elif}\;\frac{z}{t} \leq 4 \cdot 10^{-15}:\\
\;\;\;\;x\\
\mathbf{else}:\\
\;\;\;\;t\_1\\
\end{array}
\end{array}
if (/.f64 z t) < -5e15 or 4.0000000000000003e-15 < (/.f64 z t) Initial program 97.8%
Taylor expanded in x around 0
+-rgt-identityN/A
associate-/l*N/A
accelerator-lowering-fma.f64N/A
/-lowering-/.f6458.5
Simplified58.5%
+-rgt-identityN/A
associate-*r/N/A
associate-*l/N/A
*-lowering-*.f64N/A
/-lowering-/.f6453.9
Applied egg-rr53.9%
if -5e15 < (/.f64 z t) < 4.0000000000000003e-15Initial program 99.4%
Taylor expanded in z around 0
Simplified74.5%
Final simplification63.5%
(FPCore (x y z t) :precision binary64 (if (<= (/ z t) -4e-7) (* y (/ z t)) (fma (/ y t) z x)))
double code(double x, double y, double z, double t) {
double tmp;
if ((z / t) <= -4e-7) {
tmp = y * (z / t);
} else {
tmp = fma((y / t), z, x);
}
return tmp;
}
function code(x, y, z, t) tmp = 0.0 if (Float64(z / t) <= -4e-7) tmp = Float64(y * Float64(z / t)); else tmp = fma(Float64(y / t), z, x); end return tmp end
code[x_, y_, z_, t_] := If[LessEqual[N[(z / t), $MachinePrecision], -4e-7], N[(y * N[(z / t), $MachinePrecision]), $MachinePrecision], N[(N[(y / t), $MachinePrecision] * z + x), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;\frac{z}{t} \leq -4 \cdot 10^{-7}:\\
\;\;\;\;y \cdot \frac{z}{t}\\
\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(\frac{y}{t}, z, x\right)\\
\end{array}
\end{array}
if (/.f64 z t) < -3.9999999999999998e-7Initial program 98.4%
Taylor expanded in x around 0
+-rgt-identityN/A
associate-/l*N/A
accelerator-lowering-fma.f64N/A
/-lowering-/.f6458.8
Simplified58.8%
+-rgt-identityN/A
*-commutativeN/A
*-lowering-*.f64N/A
/-lowering-/.f6458.8
Applied egg-rr58.8%
if -3.9999999999999998e-7 < (/.f64 z t) Initial program 98.6%
Taylor expanded in y around inf
Simplified82.5%
+-commutativeN/A
clear-numN/A
div-invN/A
associate-/r/N/A
accelerator-lowering-fma.f64N/A
/-lowering-/.f6476.6
Applied egg-rr76.6%
Final simplification72.0%
(FPCore (x y z t) :precision binary64 (let* ((t_1 (* x (- 1.0 (/ z t))))) (if (<= x -2.3e+41) t_1 (if (<= x 3.8e-21) (fma (/ z t) y x) t_1))))
double code(double x, double y, double z, double t) {
double t_1 = x * (1.0 - (z / t));
double tmp;
if (x <= -2.3e+41) {
tmp = t_1;
} else if (x <= 3.8e-21) {
tmp = fma((z / t), y, x);
} else {
tmp = t_1;
}
return tmp;
}
function code(x, y, z, t) t_1 = Float64(x * Float64(1.0 - Float64(z / t))) tmp = 0.0 if (x <= -2.3e+41) tmp = t_1; elseif (x <= 3.8e-21) tmp = fma(Float64(z / t), y, x); else tmp = t_1; end return tmp end
code[x_, y_, z_, t_] := Block[{t$95$1 = N[(x * N[(1.0 - N[(z / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[x, -2.3e+41], t$95$1, If[LessEqual[x, 3.8e-21], N[(N[(z / t), $MachinePrecision] * y + x), $MachinePrecision], t$95$1]]]
\begin{array}{l}
\\
\begin{array}{l}
t_1 := x \cdot \left(1 - \frac{z}{t}\right)\\
\mathbf{if}\;x \leq -2.3 \cdot 10^{+41}:\\
\;\;\;\;t\_1\\
\mathbf{elif}\;x \leq 3.8 \cdot 10^{-21}:\\
\;\;\;\;\mathsf{fma}\left(\frac{z}{t}, y, x\right)\\
\mathbf{else}:\\
\;\;\;\;t\_1\\
\end{array}
\end{array}
if x < -2.2999999999999998e41 or 3.7999999999999998e-21 < x Initial program 99.9%
+-commutativeN/A
+-lowering-+.f64N/A
associate-*r/N/A
/-lowering-/.f64N/A
*-lowering-*.f64N/A
--lowering--.f6492.1
Applied egg-rr92.1%
clear-numN/A
associate-/r*N/A
clear-numN/A
/-lowering-/.f64N/A
/-lowering-/.f64N/A
--lowering--.f6487.8
Applied egg-rr87.8%
Taylor expanded in y around 0
+-commutativeN/A
remove-double-negN/A
mul-1-negN/A
mul-1-negN/A
distribute-neg-inN/A
associate-/l*N/A
*-commutativeN/A
distribute-lft-inN/A
metadata-evalN/A
sub-negN/A
distribute-rgt-neg-inN/A
*-lowering-*.f64N/A
sub-negN/A
metadata-evalN/A
+-commutativeN/A
distribute-neg-inN/A
metadata-evalN/A
unsub-negN/A
--lowering--.f64N/A
/-lowering-/.f6489.3
Simplified89.3%
if -2.2999999999999998e41 < x < 3.7999999999999998e-21Initial program 97.0%
Taylor expanded in y around inf
Simplified90.8%
+-commutativeN/A
*-commutativeN/A
accelerator-lowering-fma.f64N/A
/-lowering-/.f6490.8
Applied egg-rr90.8%
(FPCore (x y z t) :precision binary64 (fma (/ z t) (- y x) x))
double code(double x, double y, double z, double t) {
return fma((z / t), (y - x), x);
}
function code(x, y, z, t) return fma(Float64(z / t), Float64(y - x), x) end
code[x_, y_, z_, t_] := N[(N[(z / t), $MachinePrecision] * N[(y - x), $MachinePrecision] + x), $MachinePrecision]
\begin{array}{l}
\\
\mathsf{fma}\left(\frac{z}{t}, y - x, x\right)
\end{array}
Initial program 98.5%
+-commutativeN/A
*-commutativeN/A
accelerator-lowering-fma.f64N/A
/-lowering-/.f64N/A
--lowering--.f6498.5
Applied egg-rr98.5%
(FPCore (x y z t) :precision binary64 (fma (/ z t) y x))
double code(double x, double y, double z, double t) {
return fma((z / t), y, x);
}
function code(x, y, z, t) return fma(Float64(z / t), y, x) end
code[x_, y_, z_, t_] := N[(N[(z / t), $MachinePrecision] * y + x), $MachinePrecision]
\begin{array}{l}
\\
\mathsf{fma}\left(\frac{z}{t}, y, x\right)
\end{array}
Initial program 98.5%
Taylor expanded in y around inf
Simplified76.7%
+-commutativeN/A
*-commutativeN/A
accelerator-lowering-fma.f64N/A
/-lowering-/.f6476.7
Applied egg-rr76.7%
(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 98.5%
Taylor expanded in z around 0
Simplified36.2%
(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 2024195
(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))))