
(FPCore (a b c) :precision binary64 (let* ((t_0 (sqrt (- (* b b) (* (* 4.0 a) c))))) (if (>= b 0.0) (/ (* 2.0 c) (- (- b) t_0)) (/ (+ (- b) t_0) (* 2.0 a)))))
double code(double a, double b, double c) {
double t_0 = sqrt(((b * b) - ((4.0 * a) * c)));
double tmp;
if (b >= 0.0) {
tmp = (2.0 * c) / (-b - t_0);
} else {
tmp = (-b + t_0) / (2.0 * a);
}
return tmp;
}
real(8) function code(a, b, c)
real(8), intent (in) :: a
real(8), intent (in) :: b
real(8), intent (in) :: c
real(8) :: t_0
real(8) :: tmp
t_0 = sqrt(((b * b) - ((4.0d0 * a) * c)))
if (b >= 0.0d0) then
tmp = (2.0d0 * c) / (-b - t_0)
else
tmp = (-b + t_0) / (2.0d0 * a)
end if
code = tmp
end function
public static double code(double a, double b, double c) {
double t_0 = Math.sqrt(((b * b) - ((4.0 * a) * c)));
double tmp;
if (b >= 0.0) {
tmp = (2.0 * c) / (-b - t_0);
} else {
tmp = (-b + t_0) / (2.0 * a);
}
return tmp;
}
def code(a, b, c): t_0 = math.sqrt(((b * b) - ((4.0 * a) * c))) tmp = 0 if b >= 0.0: tmp = (2.0 * c) / (-b - t_0) else: tmp = (-b + t_0) / (2.0 * a) return tmp
function code(a, b, c) t_0 = sqrt(Float64(Float64(b * b) - Float64(Float64(4.0 * a) * c))) tmp = 0.0 if (b >= 0.0) tmp = Float64(Float64(2.0 * c) / Float64(Float64(-b) - t_0)); else tmp = Float64(Float64(Float64(-b) + t_0) / Float64(2.0 * a)); end return tmp end
function tmp_2 = code(a, b, c) t_0 = sqrt(((b * b) - ((4.0 * a) * c))); tmp = 0.0; if (b >= 0.0) tmp = (2.0 * c) / (-b - t_0); else tmp = (-b + t_0) / (2.0 * a); end tmp_2 = tmp; end
code[a_, b_, c_] := Block[{t$95$0 = N[Sqrt[N[(N[(b * b), $MachinePrecision] - N[(N[(4.0 * a), $MachinePrecision] * c), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]}, If[GreaterEqual[b, 0.0], N[(N[(2.0 * c), $MachinePrecision] / N[((-b) - t$95$0), $MachinePrecision]), $MachinePrecision], N[(N[((-b) + t$95$0), $MachinePrecision] / N[(2.0 * a), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := \sqrt{b \cdot b - \left(4 \cdot a\right) \cdot c}\\
\mathbf{if}\;b \geq 0:\\
\;\;\;\;\frac{2 \cdot c}{\left(-b\right) - t\_0}\\
\mathbf{else}:\\
\;\;\;\;\frac{\left(-b\right) + t\_0}{2 \cdot a}\\
\end{array}
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 8 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (a b c) :precision binary64 (let* ((t_0 (sqrt (- (* b b) (* (* 4.0 a) c))))) (if (>= b 0.0) (/ (* 2.0 c) (- (- b) t_0)) (/ (+ (- b) t_0) (* 2.0 a)))))
double code(double a, double b, double c) {
double t_0 = sqrt(((b * b) - ((4.0 * a) * c)));
double tmp;
if (b >= 0.0) {
tmp = (2.0 * c) / (-b - t_0);
} else {
tmp = (-b + t_0) / (2.0 * a);
}
return tmp;
}
real(8) function code(a, b, c)
real(8), intent (in) :: a
real(8), intent (in) :: b
real(8), intent (in) :: c
real(8) :: t_0
real(8) :: tmp
t_0 = sqrt(((b * b) - ((4.0d0 * a) * c)))
if (b >= 0.0d0) then
tmp = (2.0d0 * c) / (-b - t_0)
else
tmp = (-b + t_0) / (2.0d0 * a)
end if
code = tmp
end function
public static double code(double a, double b, double c) {
double t_0 = Math.sqrt(((b * b) - ((4.0 * a) * c)));
double tmp;
if (b >= 0.0) {
tmp = (2.0 * c) / (-b - t_0);
} else {
tmp = (-b + t_0) / (2.0 * a);
}
return tmp;
}
def code(a, b, c): t_0 = math.sqrt(((b * b) - ((4.0 * a) * c))) tmp = 0 if b >= 0.0: tmp = (2.0 * c) / (-b - t_0) else: tmp = (-b + t_0) / (2.0 * a) return tmp
function code(a, b, c) t_0 = sqrt(Float64(Float64(b * b) - Float64(Float64(4.0 * a) * c))) tmp = 0.0 if (b >= 0.0) tmp = Float64(Float64(2.0 * c) / Float64(Float64(-b) - t_0)); else tmp = Float64(Float64(Float64(-b) + t_0) / Float64(2.0 * a)); end return tmp end
function tmp_2 = code(a, b, c) t_0 = sqrt(((b * b) - ((4.0 * a) * c))); tmp = 0.0; if (b >= 0.0) tmp = (2.0 * c) / (-b - t_0); else tmp = (-b + t_0) / (2.0 * a); end tmp_2 = tmp; end
code[a_, b_, c_] := Block[{t$95$0 = N[Sqrt[N[(N[(b * b), $MachinePrecision] - N[(N[(4.0 * a), $MachinePrecision] * c), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]}, If[GreaterEqual[b, 0.0], N[(N[(2.0 * c), $MachinePrecision] / N[((-b) - t$95$0), $MachinePrecision]), $MachinePrecision], N[(N[((-b) + t$95$0), $MachinePrecision] / N[(2.0 * a), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := \sqrt{b \cdot b - \left(4 \cdot a\right) \cdot c}\\
\mathbf{if}\;b \geq 0:\\
\;\;\;\;\frac{2 \cdot c}{\left(-b\right) - t\_0}\\
\mathbf{else}:\\
\;\;\;\;\frac{\left(-b\right) + t\_0}{2 \cdot a}\\
\end{array}
\end{array}
(FPCore (a b c)
:precision binary64
(let* ((t_0 (sqrt (- (* b b) (* c (* a 4.0))))))
(if (<= b -1e+152)
(if (>= b 0.0) (/ (* 2.0 c) (* b -2.0)) (/ b (- a)))
(if (<= b 4e+38)
(if (>= b 0.0) (/ (* 2.0 c) (- (- b) t_0)) (/ (- t_0 b) (* 2.0 a)))
(if (>= b 0.0)
(/ (* 2.0 c) (* 2.0 (fma a (/ c b) (- b))))
(/ (- (sqrt (* c (* a -4.0))) b) (* 2.0 a)))))))
double code(double a, double b, double c) {
double t_0 = sqrt(((b * b) - (c * (a * 4.0))));
double tmp_1;
if (b <= -1e+152) {
double tmp_2;
if (b >= 0.0) {
tmp_2 = (2.0 * c) / (b * -2.0);
} else {
tmp_2 = b / -a;
}
tmp_1 = tmp_2;
} else if (b <= 4e+38) {
double tmp_3;
if (b >= 0.0) {
tmp_3 = (2.0 * c) / (-b - t_0);
} else {
tmp_3 = (t_0 - b) / (2.0 * a);
}
tmp_1 = tmp_3;
} else if (b >= 0.0) {
tmp_1 = (2.0 * c) / (2.0 * fma(a, (c / b), -b));
} else {
tmp_1 = (sqrt((c * (a * -4.0))) - b) / (2.0 * a);
}
return tmp_1;
}
function code(a, b, c) t_0 = sqrt(Float64(Float64(b * b) - Float64(c * Float64(a * 4.0)))) tmp_1 = 0.0 if (b <= -1e+152) tmp_2 = 0.0 if (b >= 0.0) tmp_2 = Float64(Float64(2.0 * c) / Float64(b * -2.0)); else tmp_2 = Float64(b / Float64(-a)); end tmp_1 = tmp_2; elseif (b <= 4e+38) tmp_3 = 0.0 if (b >= 0.0) tmp_3 = Float64(Float64(2.0 * c) / Float64(Float64(-b) - t_0)); else tmp_3 = Float64(Float64(t_0 - b) / Float64(2.0 * a)); end tmp_1 = tmp_3; elseif (b >= 0.0) tmp_1 = Float64(Float64(2.0 * c) / Float64(2.0 * fma(a, Float64(c / b), Float64(-b)))); else tmp_1 = Float64(Float64(sqrt(Float64(c * Float64(a * -4.0))) - b) / Float64(2.0 * a)); end return tmp_1 end
code[a_, b_, c_] := Block[{t$95$0 = N[Sqrt[N[(N[(b * b), $MachinePrecision] - N[(c * N[(a * 4.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]}, If[LessEqual[b, -1e+152], If[GreaterEqual[b, 0.0], N[(N[(2.0 * c), $MachinePrecision] / N[(b * -2.0), $MachinePrecision]), $MachinePrecision], N[(b / (-a)), $MachinePrecision]], If[LessEqual[b, 4e+38], If[GreaterEqual[b, 0.0], N[(N[(2.0 * c), $MachinePrecision] / N[((-b) - t$95$0), $MachinePrecision]), $MachinePrecision], N[(N[(t$95$0 - b), $MachinePrecision] / N[(2.0 * a), $MachinePrecision]), $MachinePrecision]], If[GreaterEqual[b, 0.0], N[(N[(2.0 * c), $MachinePrecision] / N[(2.0 * N[(a * N[(c / b), $MachinePrecision] + (-b)), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(N[(N[Sqrt[N[(c * N[(a * -4.0), $MachinePrecision]), $MachinePrecision]], $MachinePrecision] - b), $MachinePrecision] / N[(2.0 * a), $MachinePrecision]), $MachinePrecision]]]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := \sqrt{b \cdot b - c \cdot \left(a \cdot 4\right)}\\
\mathbf{if}\;b \leq -1 \cdot 10^{+152}:\\
\;\;\;\;\begin{array}{l}
\mathbf{if}\;b \geq 0:\\
\;\;\;\;\frac{2 \cdot c}{b \cdot -2}\\
\mathbf{else}:\\
\;\;\;\;\frac{b}{-a}\\
\end{array}\\
\mathbf{elif}\;b \leq 4 \cdot 10^{+38}:\\
\;\;\;\;\begin{array}{l}
\mathbf{if}\;b \geq 0:\\
\;\;\;\;\frac{2 \cdot c}{\left(-b\right) - t\_0}\\
\mathbf{else}:\\
\;\;\;\;\frac{t\_0 - b}{2 \cdot a}\\
\end{array}\\
\mathbf{elif}\;b \geq 0:\\
\;\;\;\;\frac{2 \cdot c}{2 \cdot \mathsf{fma}\left(a, \frac{c}{b}, -b\right)}\\
\mathbf{else}:\\
\;\;\;\;\frac{\sqrt{c \cdot \left(a \cdot -4\right)} - b}{2 \cdot a}\\
\end{array}
\end{array}
if b < -1e152Initial program 31.5%
Taylor expanded in b around inf 31.5%
*-commutative31.5%
Simplified31.5%
Taylor expanded in b around -inf 97.4%
associate-*r/97.4%
mul-1-neg97.4%
Simplified97.4%
if -1e152 < b < 3.99999999999999991e38Initial program 83.6%
if 3.99999999999999991e38 < b Initial program 65.8%
Taylor expanded in a around 0 93.1%
distribute-lft-out--93.1%
associate-/l*98.7%
fma-neg98.7%
Simplified98.7%
Taylor expanded in b around 0 98.7%
associate-*r*98.7%
*-commutative98.7%
*-commutative98.7%
Simplified98.7%
Final simplification89.7%
(FPCore (a b c)
:precision binary64
(let* ((t_0 (/ (* 2.0 c) (* b -2.0))))
(if (<= b -2.9e-83)
(if (>= b 0.0) t_0 (* b (+ (/ c (pow b 2.0)) (/ -1.0 a))))
(if (<= b 3.8e-301)
(if (>= b 0.0)
(/ 1.0 (/ (fma a (/ c b) b) c))
(/ (- (sqrt (* c (* a -4.0))) b) (* 2.0 a)))
(if (>= b 0.0) t_0 (/ 1.0 (/ b c)))))))
double code(double a, double b, double c) {
double t_0 = (2.0 * c) / (b * -2.0);
double tmp_1;
if (b <= -2.9e-83) {
double tmp_2;
if (b >= 0.0) {
tmp_2 = t_0;
} else {
tmp_2 = b * ((c / pow(b, 2.0)) + (-1.0 / a));
}
tmp_1 = tmp_2;
} else if (b <= 3.8e-301) {
double tmp_3;
if (b >= 0.0) {
tmp_3 = 1.0 / (fma(a, (c / b), b) / c);
} else {
tmp_3 = (sqrt((c * (a * -4.0))) - b) / (2.0 * a);
}
tmp_1 = tmp_3;
} else if (b >= 0.0) {
tmp_1 = t_0;
} else {
tmp_1 = 1.0 / (b / c);
}
return tmp_1;
}
function code(a, b, c) t_0 = Float64(Float64(2.0 * c) / Float64(b * -2.0)) tmp_1 = 0.0 if (b <= -2.9e-83) tmp_2 = 0.0 if (b >= 0.0) tmp_2 = t_0; else tmp_2 = Float64(b * Float64(Float64(c / (b ^ 2.0)) + Float64(-1.0 / a))); end tmp_1 = tmp_2; elseif (b <= 3.8e-301) tmp_3 = 0.0 if (b >= 0.0) tmp_3 = Float64(1.0 / Float64(fma(a, Float64(c / b), b) / c)); else tmp_3 = Float64(Float64(sqrt(Float64(c * Float64(a * -4.0))) - b) / Float64(2.0 * a)); end tmp_1 = tmp_3; elseif (b >= 0.0) tmp_1 = t_0; else tmp_1 = Float64(1.0 / Float64(b / c)); end return tmp_1 end
code[a_, b_, c_] := Block[{t$95$0 = N[(N[(2.0 * c), $MachinePrecision] / N[(b * -2.0), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[b, -2.9e-83], If[GreaterEqual[b, 0.0], t$95$0, N[(b * N[(N[(c / N[Power[b, 2.0], $MachinePrecision]), $MachinePrecision] + N[(-1.0 / a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], If[LessEqual[b, 3.8e-301], If[GreaterEqual[b, 0.0], N[(1.0 / N[(N[(a * N[(c / b), $MachinePrecision] + b), $MachinePrecision] / c), $MachinePrecision]), $MachinePrecision], N[(N[(N[Sqrt[N[(c * N[(a * -4.0), $MachinePrecision]), $MachinePrecision]], $MachinePrecision] - b), $MachinePrecision] / N[(2.0 * a), $MachinePrecision]), $MachinePrecision]], If[GreaterEqual[b, 0.0], t$95$0, N[(1.0 / N[(b / c), $MachinePrecision]), $MachinePrecision]]]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := \frac{2 \cdot c}{b \cdot -2}\\
\mathbf{if}\;b \leq -2.9 \cdot 10^{-83}:\\
\;\;\;\;\begin{array}{l}
\mathbf{if}\;b \geq 0:\\
\;\;\;\;t\_0\\
\mathbf{else}:\\
\;\;\;\;b \cdot \left(\frac{c}{{b}^{2}} + \frac{-1}{a}\right)\\
\end{array}\\
\mathbf{elif}\;b \leq 3.8 \cdot 10^{-301}:\\
\;\;\;\;\begin{array}{l}
\mathbf{if}\;b \geq 0:\\
\;\;\;\;\frac{1}{\frac{\mathsf{fma}\left(a, \frac{c}{b}, b\right)}{c}}\\
\mathbf{else}:\\
\;\;\;\;\frac{\sqrt{c \cdot \left(a \cdot -4\right)} - b}{2 \cdot a}\\
\end{array}\\
\mathbf{elif}\;b \geq 0:\\
\;\;\;\;t\_0\\
\mathbf{else}:\\
\;\;\;\;\frac{1}{\frac{b}{c}}\\
\end{array}
\end{array}
if b < -2.8999999999999999e-83Initial program 68.9%
Taylor expanded in b around inf 68.9%
*-commutative68.9%
Simplified68.9%
Taylor expanded in b around -inf 84.7%
associate-*r*84.7%
mul-1-neg84.7%
+-commutative84.7%
mul-1-neg84.7%
unsub-neg84.7%
Simplified84.7%
if -2.8999999999999999e-83 < b < 3.79999999999999996e-301Initial program 81.4%
Taylor expanded in a around 0 74.7%
distribute-lft-out--74.7%
associate-/l*74.7%
fma-neg74.7%
Simplified74.7%
Taylor expanded in b around 0 63.6%
associate-*r*63.6%
*-commutative63.6%
*-commutative63.6%
Simplified63.6%
clear-num63.6%
inv-pow63.6%
add-sqr-sqrt63.2%
sqrt-unprod63.6%
sqr-neg63.6%
sqrt-prod63.6%
add-sqr-sqrt63.6%
*-commutative63.6%
Applied egg-rr63.6%
unpow-163.6%
*-commutative63.6%
times-frac63.6%
metadata-eval63.6%
Simplified63.6%
if 3.79999999999999996e-301 < b Initial program 70.1%
Taylor expanded in b around inf 72.4%
*-commutative72.4%
Simplified72.4%
clear-num72.4%
inv-pow72.4%
*-commutative72.4%
add-sqr-sqrt72.4%
sqrt-unprod72.4%
sqr-neg72.4%
sqrt-prod72.4%
add-sqr-sqrt72.4%
pow272.4%
associate-*l*72.4%
Applied egg-rr72.4%
unpow-172.4%
associate-/l*72.4%
sub-neg72.4%
+-commutative72.4%
distribute-lft-neg-in72.4%
metadata-eval72.4%
associate-*r*72.4%
*-commutative72.4%
*-commutative72.4%
fma-undefine72.4%
Simplified72.4%
Taylor expanded in b around -inf 72.4%
Final simplification75.6%
(FPCore (a b c)
:precision binary64
(if (<= b -1.8e+148)
(if (>= b 0.0) (/ (* 2.0 c) (* b -2.0)) (/ b (- a)))
(if (>= b 0.0)
(/ (* 2.0 c) (* 2.0 (fma a (/ c b) (- b))))
(/ (- (sqrt (- (* b b) (* c (* a 4.0)))) b) (* 2.0 a)))))
double code(double a, double b, double c) {
double tmp_1;
if (b <= -1.8e+148) {
double tmp_2;
if (b >= 0.0) {
tmp_2 = (2.0 * c) / (b * -2.0);
} else {
tmp_2 = b / -a;
}
tmp_1 = tmp_2;
} else if (b >= 0.0) {
tmp_1 = (2.0 * c) / (2.0 * fma(a, (c / b), -b));
} else {
tmp_1 = (sqrt(((b * b) - (c * (a * 4.0)))) - b) / (2.0 * a);
}
return tmp_1;
}
function code(a, b, c) tmp_1 = 0.0 if (b <= -1.8e+148) tmp_2 = 0.0 if (b >= 0.0) tmp_2 = Float64(Float64(2.0 * c) / Float64(b * -2.0)); else tmp_2 = Float64(b / Float64(-a)); end tmp_1 = tmp_2; elseif (b >= 0.0) tmp_1 = Float64(Float64(2.0 * c) / Float64(2.0 * fma(a, Float64(c / b), Float64(-b)))); else tmp_1 = Float64(Float64(sqrt(Float64(Float64(b * b) - Float64(c * Float64(a * 4.0)))) - b) / Float64(2.0 * a)); end return tmp_1 end
code[a_, b_, c_] := If[LessEqual[b, -1.8e+148], If[GreaterEqual[b, 0.0], N[(N[(2.0 * c), $MachinePrecision] / N[(b * -2.0), $MachinePrecision]), $MachinePrecision], N[(b / (-a)), $MachinePrecision]], If[GreaterEqual[b, 0.0], N[(N[(2.0 * c), $MachinePrecision] / N[(2.0 * N[(a * N[(c / b), $MachinePrecision] + (-b)), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(N[(N[Sqrt[N[(N[(b * b), $MachinePrecision] - N[(c * N[(a * 4.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision] - b), $MachinePrecision] / N[(2.0 * a), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;b \leq -1.8 \cdot 10^{+148}:\\
\;\;\;\;\begin{array}{l}
\mathbf{if}\;b \geq 0:\\
\;\;\;\;\frac{2 \cdot c}{b \cdot -2}\\
\mathbf{else}:\\
\;\;\;\;\frac{b}{-a}\\
\end{array}\\
\mathbf{elif}\;b \geq 0:\\
\;\;\;\;\frac{2 \cdot c}{2 \cdot \mathsf{fma}\left(a, \frac{c}{b}, -b\right)}\\
\mathbf{else}:\\
\;\;\;\;\frac{\sqrt{b \cdot b - c \cdot \left(a \cdot 4\right)} - b}{2 \cdot a}\\
\end{array}
\end{array}
if b < -1.80000000000000003e148Initial program 31.5%
Taylor expanded in b around inf 31.5%
*-commutative31.5%
Simplified31.5%
Taylor expanded in b around -inf 97.4%
associate-*r/97.4%
mul-1-neg97.4%
Simplified97.4%
if -1.80000000000000003e148 < b Initial program 77.9%
Taylor expanded in a around 0 76.3%
distribute-lft-out--76.3%
associate-/l*78.0%
fma-neg78.0%
Simplified78.0%
Final simplification80.8%
(FPCore (a b c)
:precision binary64
(if (<= b -3.4e-81)
(if (>= b 0.0)
(/ (* 2.0 c) (* b -2.0))
(* b (+ (/ c (pow b 2.0)) (/ -1.0 a))))
(if (>= b 0.0)
(/ (* 2.0 c) (* 2.0 (fma a (/ c b) (- b))))
(/ (- (sqrt (* c (* a -4.0))) b) (* 2.0 a)))))
double code(double a, double b, double c) {
double tmp_1;
if (b <= -3.4e-81) {
double tmp_2;
if (b >= 0.0) {
tmp_2 = (2.0 * c) / (b * -2.0);
} else {
tmp_2 = b * ((c / pow(b, 2.0)) + (-1.0 / a));
}
tmp_1 = tmp_2;
} else if (b >= 0.0) {
tmp_1 = (2.0 * c) / (2.0 * fma(a, (c / b), -b));
} else {
tmp_1 = (sqrt((c * (a * -4.0))) - b) / (2.0 * a);
}
return tmp_1;
}
function code(a, b, c) tmp_1 = 0.0 if (b <= -3.4e-81) tmp_2 = 0.0 if (b >= 0.0) tmp_2 = Float64(Float64(2.0 * c) / Float64(b * -2.0)); else tmp_2 = Float64(b * Float64(Float64(c / (b ^ 2.0)) + Float64(-1.0 / a))); end tmp_1 = tmp_2; elseif (b >= 0.0) tmp_1 = Float64(Float64(2.0 * c) / Float64(2.0 * fma(a, Float64(c / b), Float64(-b)))); else tmp_1 = Float64(Float64(sqrt(Float64(c * Float64(a * -4.0))) - b) / Float64(2.0 * a)); end return tmp_1 end
code[a_, b_, c_] := If[LessEqual[b, -3.4e-81], If[GreaterEqual[b, 0.0], N[(N[(2.0 * c), $MachinePrecision] / N[(b * -2.0), $MachinePrecision]), $MachinePrecision], N[(b * N[(N[(c / N[Power[b, 2.0], $MachinePrecision]), $MachinePrecision] + N[(-1.0 / a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], If[GreaterEqual[b, 0.0], N[(N[(2.0 * c), $MachinePrecision] / N[(2.0 * N[(a * N[(c / b), $MachinePrecision] + (-b)), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(N[(N[Sqrt[N[(c * N[(a * -4.0), $MachinePrecision]), $MachinePrecision]], $MachinePrecision] - b), $MachinePrecision] / N[(2.0 * a), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;b \leq -3.4 \cdot 10^{-81}:\\
\;\;\;\;\begin{array}{l}
\mathbf{if}\;b \geq 0:\\
\;\;\;\;\frac{2 \cdot c}{b \cdot -2}\\
\mathbf{else}:\\
\;\;\;\;b \cdot \left(\frac{c}{{b}^{2}} + \frac{-1}{a}\right)\\
\end{array}\\
\mathbf{elif}\;b \geq 0:\\
\;\;\;\;\frac{2 \cdot c}{2 \cdot \mathsf{fma}\left(a, \frac{c}{b}, -b\right)}\\
\mathbf{else}:\\
\;\;\;\;\frac{\sqrt{c \cdot \left(a \cdot -4\right)} - b}{2 \cdot a}\\
\end{array}
\end{array}
if b < -3.3999999999999999e-81Initial program 68.9%
Taylor expanded in b around inf 68.9%
*-commutative68.9%
Simplified68.9%
Taylor expanded in b around -inf 84.7%
associate-*r*84.7%
mul-1-neg84.7%
+-commutative84.7%
mul-1-neg84.7%
unsub-neg84.7%
Simplified84.7%
if -3.3999999999999999e-81 < b Initial program 72.9%
Taylor expanded in a around 0 70.6%
distribute-lft-out--70.6%
associate-/l*73.0%
fma-neg73.0%
Simplified73.0%
Taylor expanded in b around 0 70.2%
associate-*r*70.2%
*-commutative70.2%
*-commutative70.2%
Simplified70.2%
Final simplification75.6%
(FPCore (a b c) :precision binary64 (if (>= b 0.0) (* c (/ -2.0 (+ b b))) (/ (- b b) (* -2.0 a))))
double code(double a, double b, double c) {
double tmp;
if (b >= 0.0) {
tmp = c * (-2.0 / (b + b));
} else {
tmp = (b - b) / (-2.0 * a);
}
return tmp;
}
real(8) function code(a, b, c)
real(8), intent (in) :: a
real(8), intent (in) :: b
real(8), intent (in) :: c
real(8) :: tmp
if (b >= 0.0d0) then
tmp = c * ((-2.0d0) / (b + b))
else
tmp = (b - b) / ((-2.0d0) * a)
end if
code = tmp
end function
public static double code(double a, double b, double c) {
double tmp;
if (b >= 0.0) {
tmp = c * (-2.0 / (b + b));
} else {
tmp = (b - b) / (-2.0 * a);
}
return tmp;
}
def code(a, b, c): tmp = 0 if b >= 0.0: tmp = c * (-2.0 / (b + b)) else: tmp = (b - b) / (-2.0 * a) return tmp
function code(a, b, c) tmp = 0.0 if (b >= 0.0) tmp = Float64(c * Float64(-2.0 / Float64(b + b))); else tmp = Float64(Float64(b - b) / Float64(-2.0 * a)); end return tmp end
function tmp_2 = code(a, b, c) tmp = 0.0; if (b >= 0.0) tmp = c * (-2.0 / (b + b)); else tmp = (b - b) / (-2.0 * a); end tmp_2 = tmp; end
code[a_, b_, c_] := If[GreaterEqual[b, 0.0], N[(c * N[(-2.0 / N[(b + b), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(N[(b - b), $MachinePrecision] / N[(-2.0 * a), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;b \geq 0:\\
\;\;\;\;c \cdot \frac{-2}{b + b}\\
\mathbf{else}:\\
\;\;\;\;\frac{b - b}{-2 \cdot a}\\
\end{array}
\end{array}
Initial program 71.4%
Simplified71.3%
Taylor expanded in c around 0 71.3%
Taylor expanded in c around 0 35.6%
Final simplification35.6%
(FPCore (a b c) :precision binary64 (if (>= b 0.0) (/ (* 2.0 c) (* b -2.0)) (/ 1.0 (/ b c))))
double code(double a, double b, double c) {
double tmp;
if (b >= 0.0) {
tmp = (2.0 * c) / (b * -2.0);
} else {
tmp = 1.0 / (b / c);
}
return tmp;
}
real(8) function code(a, b, c)
real(8), intent (in) :: a
real(8), intent (in) :: b
real(8), intent (in) :: c
real(8) :: tmp
if (b >= 0.0d0) then
tmp = (2.0d0 * c) / (b * (-2.0d0))
else
tmp = 1.0d0 / (b / c)
end if
code = tmp
end function
public static double code(double a, double b, double c) {
double tmp;
if (b >= 0.0) {
tmp = (2.0 * c) / (b * -2.0);
} else {
tmp = 1.0 / (b / c);
}
return tmp;
}
def code(a, b, c): tmp = 0 if b >= 0.0: tmp = (2.0 * c) / (b * -2.0) else: tmp = 1.0 / (b / c) return tmp
function code(a, b, c) tmp = 0.0 if (b >= 0.0) tmp = Float64(Float64(2.0 * c) / Float64(b * -2.0)); else tmp = Float64(1.0 / Float64(b / c)); end return tmp end
function tmp_2 = code(a, b, c) tmp = 0.0; if (b >= 0.0) tmp = (2.0 * c) / (b * -2.0); else tmp = 1.0 / (b / c); end tmp_2 = tmp; end
code[a_, b_, c_] := If[GreaterEqual[b, 0.0], N[(N[(2.0 * c), $MachinePrecision] / N[(b * -2.0), $MachinePrecision]), $MachinePrecision], N[(1.0 / N[(b / c), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;b \geq 0:\\
\;\;\;\;\frac{2 \cdot c}{b \cdot -2}\\
\mathbf{else}:\\
\;\;\;\;\frac{1}{\frac{b}{c}}\\
\end{array}
\end{array}
Initial program 71.4%
Taylor expanded in b around inf 71.4%
*-commutative71.4%
Simplified71.4%
clear-num71.4%
inv-pow71.4%
*-commutative71.4%
add-sqr-sqrt71.3%
sqrt-unprod71.1%
sqr-neg71.1%
sqrt-prod34.3%
add-sqr-sqrt51.8%
pow251.8%
associate-*l*51.8%
Applied egg-rr51.8%
unpow-151.8%
associate-/l*51.8%
sub-neg51.8%
+-commutative51.8%
distribute-lft-neg-in51.8%
metadata-eval51.8%
associate-*r*51.8%
*-commutative51.8%
*-commutative51.8%
fma-undefine51.8%
Simplified51.8%
Taylor expanded in b around -inf 36.2%
Final simplification36.2%
(FPCore (a b c) :precision binary64 (if (>= b 0.0) (/ (* 2.0 c) (* b -2.0)) (/ c b)))
double code(double a, double b, double c) {
double tmp;
if (b >= 0.0) {
tmp = (2.0 * c) / (b * -2.0);
} else {
tmp = c / b;
}
return tmp;
}
real(8) function code(a, b, c)
real(8), intent (in) :: a
real(8), intent (in) :: b
real(8), intent (in) :: c
real(8) :: tmp
if (b >= 0.0d0) then
tmp = (2.0d0 * c) / (b * (-2.0d0))
else
tmp = c / b
end if
code = tmp
end function
public static double code(double a, double b, double c) {
double tmp;
if (b >= 0.0) {
tmp = (2.0 * c) / (b * -2.0);
} else {
tmp = c / b;
}
return tmp;
}
def code(a, b, c): tmp = 0 if b >= 0.0: tmp = (2.0 * c) / (b * -2.0) else: tmp = c / b return tmp
function code(a, b, c) tmp = 0.0 if (b >= 0.0) tmp = Float64(Float64(2.0 * c) / Float64(b * -2.0)); else tmp = Float64(c / b); end return tmp end
function tmp_2 = code(a, b, c) tmp = 0.0; if (b >= 0.0) tmp = (2.0 * c) / (b * -2.0); else tmp = c / b; end tmp_2 = tmp; end
code[a_, b_, c_] := If[GreaterEqual[b, 0.0], N[(N[(2.0 * c), $MachinePrecision] / N[(b * -2.0), $MachinePrecision]), $MachinePrecision], N[(c / b), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;b \geq 0:\\
\;\;\;\;\frac{2 \cdot c}{b \cdot -2}\\
\mathbf{else}:\\
\;\;\;\;\frac{c}{b}\\
\end{array}
\end{array}
Initial program 71.4%
Taylor expanded in b around inf 71.4%
*-commutative71.4%
Simplified71.4%
clear-num71.4%
inv-pow71.4%
*-commutative71.4%
add-sqr-sqrt71.3%
sqrt-unprod71.1%
sqr-neg71.1%
sqrt-prod34.3%
add-sqr-sqrt51.8%
pow251.8%
associate-*l*51.8%
Applied egg-rr51.8%
unpow-151.8%
associate-/l*51.8%
sub-neg51.8%
+-commutative51.8%
distribute-lft-neg-in51.8%
metadata-eval51.8%
associate-*r*51.8%
*-commutative51.8%
*-commutative51.8%
fma-undefine51.8%
Simplified51.8%
Taylor expanded in b around -inf 36.2%
Taylor expanded in b around 0 36.2%
Final simplification36.2%
(FPCore (a b c) :precision binary64 (if (>= b 0.0) (/ (* 2.0 c) (* b -2.0)) (/ b (- a))))
double code(double a, double b, double c) {
double tmp;
if (b >= 0.0) {
tmp = (2.0 * c) / (b * -2.0);
} else {
tmp = b / -a;
}
return tmp;
}
real(8) function code(a, b, c)
real(8), intent (in) :: a
real(8), intent (in) :: b
real(8), intent (in) :: c
real(8) :: tmp
if (b >= 0.0d0) then
tmp = (2.0d0 * c) / (b * (-2.0d0))
else
tmp = b / -a
end if
code = tmp
end function
public static double code(double a, double b, double c) {
double tmp;
if (b >= 0.0) {
tmp = (2.0 * c) / (b * -2.0);
} else {
tmp = b / -a;
}
return tmp;
}
def code(a, b, c): tmp = 0 if b >= 0.0: tmp = (2.0 * c) / (b * -2.0) else: tmp = b / -a return tmp
function code(a, b, c) tmp = 0.0 if (b >= 0.0) tmp = Float64(Float64(2.0 * c) / Float64(b * -2.0)); else tmp = Float64(b / Float64(-a)); end return tmp end
function tmp_2 = code(a, b, c) tmp = 0.0; if (b >= 0.0) tmp = (2.0 * c) / (b * -2.0); else tmp = b / -a; end tmp_2 = tmp; end
code[a_, b_, c_] := If[GreaterEqual[b, 0.0], N[(N[(2.0 * c), $MachinePrecision] / N[(b * -2.0), $MachinePrecision]), $MachinePrecision], N[(b / (-a)), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;b \geq 0:\\
\;\;\;\;\frac{2 \cdot c}{b \cdot -2}\\
\mathbf{else}:\\
\;\;\;\;\frac{b}{-a}\\
\end{array}
\end{array}
Initial program 71.4%
Taylor expanded in b around inf 71.4%
*-commutative71.4%
Simplified71.4%
Taylor expanded in b around -inf 69.4%
associate-*r/69.4%
mul-1-neg69.4%
Simplified69.4%
Final simplification69.4%
herbie shell --seed 2024076
(FPCore (a b c)
:name "jeff quadratic root 2"
:precision binary64
(if (>= b 0.0) (/ (* 2.0 c) (- (- b) (sqrt (- (* b b) (* (* 4.0 a) c))))) (/ (+ (- b) (sqrt (- (* b b) (* (* 4.0 a) c)))) (* 2.0 a))))