
(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(Float64(y - x) * 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[(N[(y - x), $MachinePrecision] * z), $MachinePrecision] / t), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x + \frac{\left(y - x\right) \cdot 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(Float64(y - x) * 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[(N[(y - x), $MachinePrecision] * z), $MachinePrecision] / t), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
x + \frac{\left(y - x\right) \cdot 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 91.5%
associate-/l*98.7%
Simplified98.7%
(FPCore (x y z t) :precision binary64 (if (or (<= y -2.2e+77) (not (<= y 3.3e-71))) (+ x (* y (/ z t))) (* x (- 1.0 (/ z t)))))
double code(double x, double y, double z, double t) {
double tmp;
if ((y <= -2.2e+77) || !(y <= 3.3e-71)) {
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 <= (-2.2d+77)) .or. (.not. (y <= 3.3d-71))) 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 <= -2.2e+77) || !(y <= 3.3e-71)) {
tmp = x + (y * (z / t));
} else {
tmp = x * (1.0 - (z / t));
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if (y <= -2.2e+77) or not (y <= 3.3e-71): 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 <= -2.2e+77) || !(y <= 3.3e-71)) 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 <= -2.2e+77) || ~((y <= 3.3e-71))) 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, -2.2e+77], N[Not[LessEqual[y, 3.3e-71]], $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 -2.2 \cdot 10^{+77} \lor \neg \left(y \leq 3.3 \cdot 10^{-71}\right):\\
\;\;\;\;x + y \cdot \frac{z}{t}\\
\mathbf{else}:\\
\;\;\;\;x \cdot \left(1 - \frac{z}{t}\right)\\
\end{array}
\end{array}
if y < -2.2e77 or 3.3000000000000002e-71 < y Initial program 89.1%
associate-/l*98.3%
Simplified98.3%
Taylor expanded in y around inf 76.2%
associate-*r/84.0%
Simplified84.0%
if -2.2e77 < y < 3.3000000000000002e-71Initial program 94.0%
associate-/l*99.2%
Simplified99.2%
Taylor expanded in x around inf 90.5%
mul-1-neg90.5%
unsub-neg90.5%
Simplified90.5%
Final simplification87.1%
(FPCore (x y z t) :precision binary64 (if (<= y -8.5e+76) (+ x (* y (/ z t))) (if (<= y 3.5e-71) (- x (* x (/ z t))) (+ x (* z (/ y t))))))
double code(double x, double y, double z, double t) {
double tmp;
if (y <= -8.5e+76) {
tmp = x + (y * (z / t));
} else if (y <= 3.5e-71) {
tmp = x - (x * (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 (y <= (-8.5d+76)) then
tmp = x + (y * (z / t))
else if (y <= 3.5d-71) then
tmp = x - (x * (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 (y <= -8.5e+76) {
tmp = x + (y * (z / t));
} else if (y <= 3.5e-71) {
tmp = x - (x * (z / t));
} else {
tmp = x + (z * (y / t));
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if y <= -8.5e+76: tmp = x + (y * (z / t)) elif y <= 3.5e-71: tmp = x - (x * (z / t)) else: tmp = x + (z * (y / t)) return tmp
function code(x, y, z, t) tmp = 0.0 if (y <= -8.5e+76) tmp = Float64(x + Float64(y * Float64(z / t))); elseif (y <= 3.5e-71) tmp = Float64(x - Float64(x * 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 (y <= -8.5e+76) tmp = x + (y * (z / t)); elseif (y <= 3.5e-71) tmp = x - (x * (z / t)); else tmp = x + (z * (y / t)); end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[LessEqual[y, -8.5e+76], N[(x + N[(y * N[(z / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[y, 3.5e-71], N[(x - N[(x * N[(z / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(x + N[(z * N[(y / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;y \leq -8.5 \cdot 10^{+76}:\\
\;\;\;\;x + y \cdot \frac{z}{t}\\
\mathbf{elif}\;y \leq 3.5 \cdot 10^{-71}:\\
\;\;\;\;x - x \cdot \frac{z}{t}\\
\mathbf{else}:\\
\;\;\;\;x + z \cdot \frac{y}{t}\\
\end{array}
\end{array}
if y < -8.49999999999999992e76Initial program 86.2%
associate-/l*98.4%
Simplified98.4%
Taylor expanded in y around inf 76.2%
associate-*r/86.8%
Simplified86.8%
if -8.49999999999999992e76 < y < 3.4999999999999999e-71Initial program 94.0%
associate-/l*99.2%
Simplified99.2%
Taylor expanded in x around inf 90.5%
mul-1-neg90.5%
unsub-neg90.5%
Simplified90.5%
Taylor expanded in z around 0 85.3%
mul-1-neg85.3%
associate-*r/90.5%
distribute-lft-neg-in90.5%
cancel-sign-sub-inv90.5%
Simplified90.5%
if 3.4999999999999999e-71 < y Initial program 91.1%
associate-/l*98.2%
Simplified98.2%
Taylor expanded in y around inf 76.3%
*-commutative76.3%
associate-/l*82.3%
Simplified82.3%
(FPCore (x y z t) :precision binary64 (if (<= y -8e+76) (+ x (* y (/ z t))) (if (<= y 2e-71) (* x (- 1.0 (/ z t))) (+ x (* z (/ y t))))))
double code(double x, double y, double z, double t) {
double tmp;
if (y <= -8e+76) {
tmp = x + (y * (z / t));
} else if (y <= 2e-71) {
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 (y <= (-8d+76)) then
tmp = x + (y * (z / t))
else if (y <= 2d-71) 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 (y <= -8e+76) {
tmp = x + (y * (z / t));
} else if (y <= 2e-71) {
tmp = x * (1.0 - (z / t));
} else {
tmp = x + (z * (y / t));
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if y <= -8e+76: tmp = x + (y * (z / t)) elif y <= 2e-71: tmp = x * (1.0 - (z / t)) else: tmp = x + (z * (y / t)) return tmp
function code(x, y, z, t) tmp = 0.0 if (y <= -8e+76) tmp = Float64(x + Float64(y * Float64(z / t))); elseif (y <= 2e-71) 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 (y <= -8e+76) tmp = x + (y * (z / t)); elseif (y <= 2e-71) tmp = x * (1.0 - (z / t)); else tmp = x + (z * (y / t)); end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[LessEqual[y, -8e+76], N[(x + N[(y * N[(z / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[y, 2e-71], 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}\;y \leq -8 \cdot 10^{+76}:\\
\;\;\;\;x + y \cdot \frac{z}{t}\\
\mathbf{elif}\;y \leq 2 \cdot 10^{-71}:\\
\;\;\;\;x \cdot \left(1 - \frac{z}{t}\right)\\
\mathbf{else}:\\
\;\;\;\;x + z \cdot \frac{y}{t}\\
\end{array}
\end{array}
if y < -8.0000000000000004e76Initial program 86.2%
associate-/l*98.4%
Simplified98.4%
Taylor expanded in y around inf 76.2%
associate-*r/86.8%
Simplified86.8%
if -8.0000000000000004e76 < y < 1.9999999999999998e-71Initial program 94.0%
associate-/l*99.2%
Simplified99.2%
Taylor expanded in x around inf 90.5%
mul-1-neg90.5%
unsub-neg90.5%
Simplified90.5%
if 1.9999999999999998e-71 < y Initial program 91.1%
associate-/l*98.2%
Simplified98.2%
Taylor expanded in y around inf 76.3%
*-commutative76.3%
associate-/l*82.3%
Simplified82.3%
(FPCore (x y z t) :precision binary64 (if (<= t -680000000.0) x (if (<= t 2.55e+54) (* x (/ z (- t))) x)))
double code(double x, double y, double z, double t) {
double tmp;
if (t <= -680000000.0) {
tmp = x;
} else if (t <= 2.55e+54) {
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 (t <= (-680000000.0d0)) then
tmp = x
else if (t <= 2.55d+54) 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 (t <= -680000000.0) {
tmp = x;
} else if (t <= 2.55e+54) {
tmp = x * (z / -t);
} else {
tmp = x;
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if t <= -680000000.0: tmp = x elif t <= 2.55e+54: tmp = x * (z / -t) else: tmp = x return tmp
function code(x, y, z, t) tmp = 0.0 if (t <= -680000000.0) tmp = x; elseif (t <= 2.55e+54) tmp = Float64(x * Float64(z / Float64(-t))); else tmp = x; end return tmp end
function tmp_2 = code(x, y, z, t) tmp = 0.0; if (t <= -680000000.0) tmp = x; elseif (t <= 2.55e+54) tmp = x * (z / -t); else tmp = x; end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[LessEqual[t, -680000000.0], x, If[LessEqual[t, 2.55e+54], N[(x * N[(z / (-t)), $MachinePrecision]), $MachinePrecision], x]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;t \leq -680000000:\\
\;\;\;\;x\\
\mathbf{elif}\;t \leq 2.55 \cdot 10^{+54}:\\
\;\;\;\;x \cdot \frac{z}{-t}\\
\mathbf{else}:\\
\;\;\;\;x\\
\end{array}
\end{array}
if t < -6.8e8 or 2.55000000000000005e54 < t Initial program 83.9%
associate-/l*98.1%
Simplified98.1%
Taylor expanded in z around 0 68.4%
if -6.8e8 < t < 2.55000000000000005e54Initial program 97.4%
associate-/l*99.3%
Simplified99.3%
Taylor expanded in x around inf 66.9%
mul-1-neg66.9%
unsub-neg66.9%
Simplified66.9%
Taylor expanded in z around inf 53.3%
mul-1-neg53.3%
distribute-frac-neg253.3%
Simplified53.3%
(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 91.5%
associate-/l*98.7%
Simplified98.7%
Taylor expanded in x around inf 71.2%
mul-1-neg71.2%
unsub-neg71.2%
Simplified71.2%
(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 91.5%
associate-/l*98.7%
Simplified98.7%
Taylor expanded in z around 0 39.0%
(FPCore (x y z t)
:precision binary64
(if (< x -9.025511195533005e-135)
(- x (* (/ z t) (- x y)))
(if (< x 4.275032163700715e-250)
(+ x (* (/ (- y x) t) z))
(+ x (/ (- y x) (/ t z))))))
double code(double x, double y, double z, double t) {
double tmp;
if (x < -9.025511195533005e-135) {
tmp = x - ((z / t) * (x - y));
} else if (x < 4.275032163700715e-250) {
tmp = x + (((y - x) / t) * z);
} else {
tmp = x + ((y - 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 (x < (-9.025511195533005d-135)) then
tmp = x - ((z / t) * (x - y))
else if (x < 4.275032163700715d-250) then
tmp = x + (((y - x) / t) * z)
else
tmp = x + ((y - x) / (t / z))
end if
code = tmp
end function
public static double code(double x, double y, double z, double t) {
double tmp;
if (x < -9.025511195533005e-135) {
tmp = x - ((z / t) * (x - y));
} else if (x < 4.275032163700715e-250) {
tmp = x + (((y - x) / t) * z);
} else {
tmp = x + ((y - x) / (t / z));
}
return tmp;
}
def code(x, y, z, t): tmp = 0 if x < -9.025511195533005e-135: tmp = x - ((z / t) * (x - y)) elif x < 4.275032163700715e-250: tmp = x + (((y - x) / t) * z) else: tmp = x + ((y - x) / (t / z)) return tmp
function code(x, y, z, t) tmp = 0.0 if (x < -9.025511195533005e-135) tmp = Float64(x - Float64(Float64(z / t) * Float64(x - y))); elseif (x < 4.275032163700715e-250) tmp = Float64(x + Float64(Float64(Float64(y - x) / t) * z)); else tmp = Float64(x + Float64(Float64(y - x) / Float64(t / z))); end return tmp end
function tmp_2 = code(x, y, z, t) tmp = 0.0; if (x < -9.025511195533005e-135) tmp = x - ((z / t) * (x - y)); elseif (x < 4.275032163700715e-250) tmp = x + (((y - x) / t) * z); else tmp = x + ((y - x) / (t / z)); end tmp_2 = tmp; end
code[x_, y_, z_, t_] := If[Less[x, -9.025511195533005e-135], N[(x - N[(N[(z / t), $MachinePrecision] * N[(x - y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[Less[x, 4.275032163700715e-250], N[(x + N[(N[(N[(y - x), $MachinePrecision] / t), $MachinePrecision] * z), $MachinePrecision]), $MachinePrecision], N[(x + N[(N[(y - x), $MachinePrecision] / N[(t / z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;x < -9.025511195533005 \cdot 10^{-135}:\\
\;\;\;\;x - \frac{z}{t} \cdot \left(x - y\right)\\
\mathbf{elif}\;x < 4.275032163700715 \cdot 10^{-250}:\\
\;\;\;\;x + \frac{y - x}{t} \cdot z\\
\mathbf{else}:\\
\;\;\;\;x + \frac{y - x}{\frac{t}{z}}\\
\end{array}
\end{array}
herbie shell --seed 2024172
(FPCore (x y z t)
:name "Numeric.Histogram:binBounds from Chart-1.5.3"
:precision binary64
:alt
(! :herbie-platform default (if (< x -1805102239106601/200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000) (- x (* (/ z t) (- x y))) (if (< x 855006432740143/2000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000) (+ x (* (/ (- y x) t) z)) (+ x (/ (- y x) (/ t z))))))
(+ x (/ (* (- y x) z) t)))