
(FPCore (a b c) :precision binary64 (/ (+ (- b) (sqrt (- (* b b) (* 4.0 (* a c))))) (* 2.0 a)))
double code(double a, double b, double c) {
return (-b + sqrt(((b * b) - (4.0 * (a * c))))) / (2.0 * a);
}
real(8) function code(a, b, c)
real(8), intent (in) :: a
real(8), intent (in) :: b
real(8), intent (in) :: c
code = (-b + sqrt(((b * b) - (4.0d0 * (a * c))))) / (2.0d0 * a)
end function
public static double code(double a, double b, double c) {
return (-b + Math.sqrt(((b * b) - (4.0 * (a * c))))) / (2.0 * a);
}
def code(a, b, c): return (-b + math.sqrt(((b * b) - (4.0 * (a * c))))) / (2.0 * a)
function code(a, b, c) return Float64(Float64(Float64(-b) + sqrt(Float64(Float64(b * b) - Float64(4.0 * Float64(a * c))))) / Float64(2.0 * a)) end
function tmp = code(a, b, c) tmp = (-b + sqrt(((b * b) - (4.0 * (a * c))))) / (2.0 * a); end
code[a_, b_, c_] := N[(N[((-b) + N[Sqrt[N[(N[(b * b), $MachinePrecision] - N[(4.0 * N[(a * c), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] / N[(2.0 * a), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{\left(-b\right) + \sqrt{b \cdot b - 4 \cdot \left(a \cdot c\right)}}{2 \cdot a}
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 6 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (a b c) :precision binary64 (/ (+ (- b) (sqrt (- (* b b) (* 4.0 (* a c))))) (* 2.0 a)))
double code(double a, double b, double c) {
return (-b + sqrt(((b * b) - (4.0 * (a * c))))) / (2.0 * a);
}
real(8) function code(a, b, c)
real(8), intent (in) :: a
real(8), intent (in) :: b
real(8), intent (in) :: c
code = (-b + sqrt(((b * b) - (4.0d0 * (a * c))))) / (2.0d0 * a)
end function
public static double code(double a, double b, double c) {
return (-b + Math.sqrt(((b * b) - (4.0 * (a * c))))) / (2.0 * a);
}
def code(a, b, c): return (-b + math.sqrt(((b * b) - (4.0 * (a * c))))) / (2.0 * a)
function code(a, b, c) return Float64(Float64(Float64(-b) + sqrt(Float64(Float64(b * b) - Float64(4.0 * Float64(a * c))))) / Float64(2.0 * a)) end
function tmp = code(a, b, c) tmp = (-b + sqrt(((b * b) - (4.0 * (a * c))))) / (2.0 * a); end
code[a_, b_, c_] := N[(N[((-b) + N[Sqrt[N[(N[(b * b), $MachinePrecision] - N[(4.0 * N[(a * c), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] / N[(2.0 * a), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{\left(-b\right) + \sqrt{b \cdot b - 4 \cdot \left(a \cdot c\right)}}{2 \cdot a}
\end{array}
(FPCore (a b c)
:precision binary64
(if (<= b -9e+136)
(/ b (- a))
(if (<= b 6.4e-53)
(/ (- (sqrt (- (* b b) (* 4.0 (* a c)))) b) (* a 2.0))
(/ c (- b)))))
double code(double a, double b, double c) {
double tmp;
if (b <= -9e+136) {
tmp = b / -a;
} else if (b <= 6.4e-53) {
tmp = (sqrt(((b * b) - (4.0 * (a * c)))) - b) / (a * 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 <= (-9d+136)) then
tmp = b / -a
else if (b <= 6.4d-53) then
tmp = (sqrt(((b * b) - (4.0d0 * (a * c)))) - b) / (a * 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 <= -9e+136) {
tmp = b / -a;
} else if (b <= 6.4e-53) {
tmp = (Math.sqrt(((b * b) - (4.0 * (a * c)))) - b) / (a * 2.0);
} else {
tmp = c / -b;
}
return tmp;
}
def code(a, b, c): tmp = 0 if b <= -9e+136: tmp = b / -a elif b <= 6.4e-53: tmp = (math.sqrt(((b * b) - (4.0 * (a * c)))) - b) / (a * 2.0) else: tmp = c / -b return tmp
function code(a, b, c) tmp = 0.0 if (b <= -9e+136) tmp = Float64(b / Float64(-a)); elseif (b <= 6.4e-53) tmp = Float64(Float64(sqrt(Float64(Float64(b * b) - Float64(4.0 * Float64(a * c)))) - b) / Float64(a * 2.0)); else tmp = Float64(c / Float64(-b)); end return tmp end
function tmp_2 = code(a, b, c) tmp = 0.0; if (b <= -9e+136) tmp = b / -a; elseif (b <= 6.4e-53) tmp = (sqrt(((b * b) - (4.0 * (a * c)))) - b) / (a * 2.0); else tmp = c / -b; end tmp_2 = tmp; end
code[a_, b_, c_] := If[LessEqual[b, -9e+136], N[(b / (-a)), $MachinePrecision], If[LessEqual[b, 6.4e-53], N[(N[(N[Sqrt[N[(N[(b * b), $MachinePrecision] - N[(4.0 * N[(a * c), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision] - b), $MachinePrecision] / N[(a * 2.0), $MachinePrecision]), $MachinePrecision], N[(c / (-b)), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;b \leq -9 \cdot 10^{+136}:\\
\;\;\;\;\frac{b}{-a}\\
\mathbf{elif}\;b \leq 6.4 \cdot 10^{-53}:\\
\;\;\;\;\frac{\sqrt{b \cdot b - 4 \cdot \left(a \cdot c\right)} - b}{a \cdot 2}\\
\mathbf{else}:\\
\;\;\;\;\frac{c}{-b}\\
\end{array}
\end{array}
if b < -8.9999999999999999e136Initial program 57.4%
*-commutative57.4%
Simplified57.4%
Taylor expanded in b around -inf 95.9%
mul-1-neg95.9%
distribute-neg-frac295.9%
Simplified95.9%
if -8.9999999999999999e136 < b < 6.4000000000000002e-53Initial program 83.2%
if 6.4000000000000002e-53 < b Initial program 15.2%
*-commutative15.2%
Simplified15.2%
Taylor expanded in b around inf 93.6%
associate-*r/93.6%
neg-mul-193.6%
Simplified93.6%
Final simplification88.8%
(FPCore (a b c)
:precision binary64
(if (<= b -1e-12)
(* b (+ (/ c (pow b 2.0)) (/ -1.0 a)))
(if (<= b 6.4e-53)
(/ (- (sqrt (* c (* a -4.0))) b) (* a 2.0))
(/ c (- b)))))
double code(double a, double b, double c) {
double tmp;
if (b <= -1e-12) {
tmp = b * ((c / pow(b, 2.0)) + (-1.0 / a));
} else if (b <= 6.4e-53) {
tmp = (sqrt((c * (a * -4.0))) - b) / (a * 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 <= (-1d-12)) then
tmp = b * ((c / (b ** 2.0d0)) + ((-1.0d0) / a))
else if (b <= 6.4d-53) then
tmp = (sqrt((c * (a * (-4.0d0)))) - b) / (a * 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 <= -1e-12) {
tmp = b * ((c / Math.pow(b, 2.0)) + (-1.0 / a));
} else if (b <= 6.4e-53) {
tmp = (Math.sqrt((c * (a * -4.0))) - b) / (a * 2.0);
} else {
tmp = c / -b;
}
return tmp;
}
def code(a, b, c): tmp = 0 if b <= -1e-12: tmp = b * ((c / math.pow(b, 2.0)) + (-1.0 / a)) elif b <= 6.4e-53: tmp = (math.sqrt((c * (a * -4.0))) - b) / (a * 2.0) else: tmp = c / -b return tmp
function code(a, b, c) tmp = 0.0 if (b <= -1e-12) tmp = Float64(b * Float64(Float64(c / (b ^ 2.0)) + Float64(-1.0 / a))); elseif (b <= 6.4e-53) tmp = Float64(Float64(sqrt(Float64(c * Float64(a * -4.0))) - b) / Float64(a * 2.0)); else tmp = Float64(c / Float64(-b)); end return tmp end
function tmp_2 = code(a, b, c) tmp = 0.0; if (b <= -1e-12) tmp = b * ((c / (b ^ 2.0)) + (-1.0 / a)); elseif (b <= 6.4e-53) tmp = (sqrt((c * (a * -4.0))) - b) / (a * 2.0); else tmp = c / -b; end tmp_2 = tmp; end
code[a_, b_, c_] := If[LessEqual[b, -1e-12], N[(b * N[(N[(c / N[Power[b, 2.0], $MachinePrecision]), $MachinePrecision] + N[(-1.0 / a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[b, 6.4e-53], N[(N[(N[Sqrt[N[(c * N[(a * -4.0), $MachinePrecision]), $MachinePrecision]], $MachinePrecision] - b), $MachinePrecision] / N[(a * 2.0), $MachinePrecision]), $MachinePrecision], N[(c / (-b)), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;b \leq -1 \cdot 10^{-12}:\\
\;\;\;\;b \cdot \left(\frac{c}{{b}^{2}} + \frac{-1}{a}\right)\\
\mathbf{elif}\;b \leq 6.4 \cdot 10^{-53}:\\
\;\;\;\;\frac{\sqrt{c \cdot \left(a \cdot -4\right)} - b}{a \cdot 2}\\
\mathbf{else}:\\
\;\;\;\;\frac{c}{-b}\\
\end{array}
\end{array}
if b < -9.9999999999999998e-13Initial program 72.7%
*-commutative72.7%
Simplified72.7%
Taylor expanded in b around -inf 89.7%
mul-1-neg89.7%
*-commutative89.7%
distribute-rgt-neg-in89.7%
+-commutative89.7%
mul-1-neg89.7%
unsub-neg89.7%
Simplified89.7%
if -9.9999999999999998e-13 < b < 6.4000000000000002e-53Initial program 79.8%
*-commutative79.8%
Simplified79.8%
Taylor expanded in b around 0 71.3%
*-commutative71.3%
*-commutative71.3%
associate-*l*71.3%
Simplified71.3%
if 6.4000000000000002e-53 < b Initial program 15.2%
*-commutative15.2%
Simplified15.2%
Taylor expanded in b around inf 93.6%
associate-*r/93.6%
neg-mul-193.6%
Simplified93.6%
Final simplification84.4%
(FPCore (a b c) :precision binary64 (if (<= b 2.6e-10) (/ b (- a)) (/ c b)))
double code(double a, double b, double c) {
double tmp;
if (b <= 2.6e-10) {
tmp = b / -a;
} 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 <= 2.6d-10) then
tmp = b / -a
else
tmp = c / b
end if
code = tmp
end function
public static double code(double a, double b, double c) {
double tmp;
if (b <= 2.6e-10) {
tmp = b / -a;
} else {
tmp = c / b;
}
return tmp;
}
def code(a, b, c): tmp = 0 if b <= 2.6e-10: tmp = b / -a else: tmp = c / b return tmp
function code(a, b, c) tmp = 0.0 if (b <= 2.6e-10) tmp = Float64(b / Float64(-a)); else tmp = Float64(c / b); end return tmp end
function tmp_2 = code(a, b, c) tmp = 0.0; if (b <= 2.6e-10) tmp = b / -a; else tmp = c / b; end tmp_2 = tmp; end
code[a_, b_, c_] := If[LessEqual[b, 2.6e-10], N[(b / (-a)), $MachinePrecision], N[(c / b), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;b \leq 2.6 \cdot 10^{-10}:\\
\;\;\;\;\frac{b}{-a}\\
\mathbf{else}:\\
\;\;\;\;\frac{c}{b}\\
\end{array}
\end{array}
if b < 2.59999999999999981e-10Initial program 74.1%
*-commutative74.1%
Simplified74.1%
Taylor expanded in b around -inf 48.0%
mul-1-neg48.0%
distribute-neg-frac248.0%
Simplified48.0%
if 2.59999999999999981e-10 < b Initial program 15.0%
*-commutative15.0%
Simplified15.0%
clear-num15.0%
associate-/r/15.0%
*-commutative15.0%
associate-/r*15.0%
metadata-eval15.0%
add-sqr-sqrt0.0%
sqrt-unprod3.7%
sqr-neg3.7%
sqrt-prod3.7%
add-sqr-sqrt3.7%
sub-neg3.7%
+-commutative3.7%
distribute-lft-neg-in3.7%
*-commutative3.7%
associate-*r*3.7%
fma-define3.7%
metadata-eval3.7%
pow23.7%
Applied egg-rr3.7%
Taylor expanded in b around -inf 28.1%
Final simplification42.0%
(FPCore (a b c) :precision binary64 (if (<= b 3.1e-262) (/ b (- a)) (/ c (- b))))
double code(double a, double b, double c) {
double tmp;
if (b <= 3.1e-262) {
tmp = b / -a;
} 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 <= 3.1d-262) then
tmp = b / -a
else
tmp = c / -b
end if
code = tmp
end function
public static double code(double a, double b, double c) {
double tmp;
if (b <= 3.1e-262) {
tmp = b / -a;
} else {
tmp = c / -b;
}
return tmp;
}
def code(a, b, c): tmp = 0 if b <= 3.1e-262: tmp = b / -a else: tmp = c / -b return tmp
function code(a, b, c) tmp = 0.0 if (b <= 3.1e-262) tmp = Float64(b / Float64(-a)); else tmp = Float64(c / Float64(-b)); end return tmp end
function tmp_2 = code(a, b, c) tmp = 0.0; if (b <= 3.1e-262) tmp = b / -a; else tmp = c / -b; end tmp_2 = tmp; end
code[a_, b_, c_] := If[LessEqual[b, 3.1e-262], N[(b / (-a)), $MachinePrecision], N[(c / (-b)), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;b \leq 3.1 \cdot 10^{-262}:\\
\;\;\;\;\frac{b}{-a}\\
\mathbf{else}:\\
\;\;\;\;\frac{c}{-b}\\
\end{array}
\end{array}
if b < 3.0999999999999998e-262Initial program 77.8%
*-commutative77.8%
Simplified77.8%
Taylor expanded in b around -inf 61.0%
mul-1-neg61.0%
distribute-neg-frac261.0%
Simplified61.0%
if 3.0999999999999998e-262 < b Initial program 30.8%
*-commutative30.8%
Simplified30.8%
Taylor expanded in b around inf 73.6%
associate-*r/73.6%
neg-mul-173.6%
Simplified73.6%
Final simplification66.7%
(FPCore (a b c) :precision binary64 (/ b a))
double code(double a, double b, double c) {
return b / a;
}
real(8) function code(a, b, c)
real(8), intent (in) :: a
real(8), intent (in) :: b
real(8), intent (in) :: c
code = b / a
end function
public static double code(double a, double b, double c) {
return b / a;
}
def code(a, b, c): return b / a
function code(a, b, c) return Float64(b / a) end
function tmp = code(a, b, c) tmp = b / a; end
code[a_, b_, c_] := N[(b / a), $MachinePrecision]
\begin{array}{l}
\\
\frac{b}{a}
\end{array}
Initial program 56.4%
*-commutative56.4%
Simplified56.4%
clear-num56.2%
associate-/r/56.2%
*-commutative56.2%
associate-/r*56.2%
metadata-eval56.2%
add-sqr-sqrt41.3%
sqrt-unprod52.6%
sqr-neg52.6%
sqrt-prod11.4%
add-sqr-sqrt36.3%
sub-neg36.3%
+-commutative36.3%
distribute-lft-neg-in36.3%
*-commutative36.3%
associate-*r*36.3%
fma-define36.3%
metadata-eval36.3%
pow236.3%
Applied egg-rr36.3%
Taylor expanded in a around 0 2.3%
Final simplification2.3%
(FPCore (a b c) :precision binary64 (/ c b))
double code(double a, double b, double c) {
return c / b;
}
real(8) function code(a, b, c)
real(8), intent (in) :: a
real(8), intent (in) :: b
real(8), intent (in) :: c
code = c / b
end function
public static double code(double a, double b, double c) {
return c / b;
}
def code(a, b, c): return c / b
function code(a, b, c) return Float64(c / b) end
function tmp = code(a, b, c) tmp = c / b; end
code[a_, b_, c_] := N[(c / b), $MachinePrecision]
\begin{array}{l}
\\
\frac{c}{b}
\end{array}
Initial program 56.4%
*-commutative56.4%
Simplified56.4%
clear-num56.2%
associate-/r/56.2%
*-commutative56.2%
associate-/r*56.2%
metadata-eval56.2%
add-sqr-sqrt41.3%
sqrt-unprod52.6%
sqr-neg52.6%
sqrt-prod11.4%
add-sqr-sqrt36.3%
sub-neg36.3%
+-commutative36.3%
distribute-lft-neg-in36.3%
*-commutative36.3%
associate-*r*36.3%
fma-define36.3%
metadata-eval36.3%
pow236.3%
Applied egg-rr36.3%
Taylor expanded in b around -inf 10.6%
Final simplification10.6%
(FPCore (a b c)
:precision binary64
(let* ((t_0 (fabs (/ b 2.0)))
(t_1 (* (sqrt (fabs a)) (sqrt (fabs c))))
(t_2
(if (== (copysign a c) a)
(* (sqrt (- t_0 t_1)) (sqrt (+ t_0 t_1)))
(hypot (/ b 2.0) t_1))))
(if (< b 0.0) (/ (- t_2 (/ b 2.0)) a) (/ (- c) (+ (/ b 2.0) t_2)))))
double code(double a, double b, double c) {
double t_0 = fabs((b / 2.0));
double t_1 = sqrt(fabs(a)) * sqrt(fabs(c));
double tmp;
if (copysign(a, c) == a) {
tmp = sqrt((t_0 - t_1)) * sqrt((t_0 + t_1));
} else {
tmp = hypot((b / 2.0), t_1);
}
double t_2 = tmp;
double tmp_1;
if (b < 0.0) {
tmp_1 = (t_2 - (b / 2.0)) / a;
} else {
tmp_1 = -c / ((b / 2.0) + t_2);
}
return tmp_1;
}
public static double code(double a, double b, double c) {
double t_0 = Math.abs((b / 2.0));
double t_1 = Math.sqrt(Math.abs(a)) * Math.sqrt(Math.abs(c));
double tmp;
if (Math.copySign(a, c) == a) {
tmp = Math.sqrt((t_0 - t_1)) * Math.sqrt((t_0 + t_1));
} else {
tmp = Math.hypot((b / 2.0), t_1);
}
double t_2 = tmp;
double tmp_1;
if (b < 0.0) {
tmp_1 = (t_2 - (b / 2.0)) / a;
} else {
tmp_1 = -c / ((b / 2.0) + t_2);
}
return tmp_1;
}
def code(a, b, c): t_0 = math.fabs((b / 2.0)) t_1 = math.sqrt(math.fabs(a)) * math.sqrt(math.fabs(c)) tmp = 0 if math.copysign(a, c) == a: tmp = math.sqrt((t_0 - t_1)) * math.sqrt((t_0 + t_1)) else: tmp = math.hypot((b / 2.0), t_1) t_2 = tmp tmp_1 = 0 if b < 0.0: tmp_1 = (t_2 - (b / 2.0)) / a else: tmp_1 = -c / ((b / 2.0) + t_2) return tmp_1
function code(a, b, c) t_0 = abs(Float64(b / 2.0)) t_1 = Float64(sqrt(abs(a)) * sqrt(abs(c))) tmp = 0.0 if (copysign(a, c) == a) tmp = Float64(sqrt(Float64(t_0 - t_1)) * sqrt(Float64(t_0 + t_1))); else tmp = hypot(Float64(b / 2.0), t_1); end t_2 = tmp tmp_1 = 0.0 if (b < 0.0) tmp_1 = Float64(Float64(t_2 - Float64(b / 2.0)) / a); else tmp_1 = Float64(Float64(-c) / Float64(Float64(b / 2.0) + t_2)); end return tmp_1 end
function tmp_3 = code(a, b, c) t_0 = abs((b / 2.0)); t_1 = sqrt(abs(a)) * sqrt(abs(c)); tmp = 0.0; if ((sign(c) * abs(a)) == a) tmp = sqrt((t_0 - t_1)) * sqrt((t_0 + t_1)); else tmp = hypot((b / 2.0), t_1); end t_2 = tmp; tmp_2 = 0.0; if (b < 0.0) tmp_2 = (t_2 - (b / 2.0)) / a; else tmp_2 = -c / ((b / 2.0) + t_2); end tmp_3 = tmp_2; end
code[a_, b_, c_] := Block[{t$95$0 = N[Abs[N[(b / 2.0), $MachinePrecision]], $MachinePrecision]}, Block[{t$95$1 = N[(N[Sqrt[N[Abs[a], $MachinePrecision]], $MachinePrecision] * N[Sqrt[N[Abs[c], $MachinePrecision]], $MachinePrecision]), $MachinePrecision]}, Block[{t$95$2 = If[Equal[N[With[{TMP1 = Abs[a], TMP2 = Sign[c]}, TMP1 * If[TMP2 == 0, 1, TMP2]], $MachinePrecision], a], N[(N[Sqrt[N[(t$95$0 - t$95$1), $MachinePrecision]], $MachinePrecision] * N[Sqrt[N[(t$95$0 + t$95$1), $MachinePrecision]], $MachinePrecision]), $MachinePrecision], N[Sqrt[N[(b / 2.0), $MachinePrecision] ^ 2 + t$95$1 ^ 2], $MachinePrecision]]}, If[Less[b, 0.0], N[(N[(t$95$2 - N[(b / 2.0), $MachinePrecision]), $MachinePrecision] / a), $MachinePrecision], N[((-c) / N[(N[(b / 2.0), $MachinePrecision] + t$95$2), $MachinePrecision]), $MachinePrecision]]]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := \left|\frac{b}{2}\right|\\
t_1 := \sqrt{\left|a\right|} \cdot \sqrt{\left|c\right|}\\
t_2 := \begin{array}{l}
\mathbf{if}\;\mathsf{copysign}\left(a, c\right) = a:\\
\;\;\;\;\sqrt{t\_0 - t\_1} \cdot \sqrt{t\_0 + t\_1}\\
\mathbf{else}:\\
\;\;\;\;\mathsf{hypot}\left(\frac{b}{2}, t\_1\right)\\
\end{array}\\
\mathbf{if}\;b < 0:\\
\;\;\;\;\frac{t\_2 - \frac{b}{2}}{a}\\
\mathbf{else}:\\
\;\;\;\;\frac{-c}{\frac{b}{2} + t\_2}\\
\end{array}
\end{array}
herbie shell --seed 2024085
(FPCore (a b c)
:name "quadp (p42, positive)"
:precision binary64
:herbie-expected 10
:alt
(if (< b 0.0) (/ (- (if (== (copysign a c) a) (* (sqrt (- (fabs (/ b 2.0)) (* (sqrt (fabs a)) (sqrt (fabs c))))) (sqrt (+ (fabs (/ b 2.0)) (* (sqrt (fabs a)) (sqrt (fabs c)))))) (hypot (/ b 2.0) (* (sqrt (fabs a)) (sqrt (fabs c))))) (/ b 2.0)) a) (/ (- c) (+ (/ b 2.0) (if (== (copysign a c) a) (* (sqrt (- (fabs (/ b 2.0)) (* (sqrt (fabs a)) (sqrt (fabs c))))) (sqrt (+ (fabs (/ b 2.0)) (* (sqrt (fabs a)) (sqrt (fabs c)))))) (hypot (/ b 2.0) (* (sqrt (fabs a)) (sqrt (fabs c))))))))
(/ (+ (- b) (sqrt (- (* b b) (* 4.0 (* a c))))) (* 2.0 a)))