
(FPCore (x y) :precision binary64 (let* ((t_0 (/ x (* y 2.0)))) (/ (tan t_0) (sin t_0))))
double code(double x, double y) {
double t_0 = x / (y * 2.0);
return tan(t_0) / sin(t_0);
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8) :: t_0
t_0 = x / (y * 2.0d0)
code = tan(t_0) / sin(t_0)
end function
public static double code(double x, double y) {
double t_0 = x / (y * 2.0);
return Math.tan(t_0) / Math.sin(t_0);
}
def code(x, y): t_0 = x / (y * 2.0) return math.tan(t_0) / math.sin(t_0)
function code(x, y) t_0 = Float64(x / Float64(y * 2.0)) return Float64(tan(t_0) / sin(t_0)) end
function tmp = code(x, y) t_0 = x / (y * 2.0); tmp = tan(t_0) / sin(t_0); end
code[x_, y_] := Block[{t$95$0 = N[(x / N[(y * 2.0), $MachinePrecision]), $MachinePrecision]}, N[(N[Tan[t$95$0], $MachinePrecision] / N[Sin[t$95$0], $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := \frac{x}{y \cdot 2}\\
\frac{\tan t_0}{\sin t_0}
\end{array}
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 3 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y) :precision binary64 (let* ((t_0 (/ x (* y 2.0)))) (/ (tan t_0) (sin t_0))))
double code(double x, double y) {
double t_0 = x / (y * 2.0);
return tan(t_0) / sin(t_0);
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8) :: t_0
t_0 = x / (y * 2.0d0)
code = tan(t_0) / sin(t_0)
end function
public static double code(double x, double y) {
double t_0 = x / (y * 2.0);
return Math.tan(t_0) / Math.sin(t_0);
}
def code(x, y): t_0 = x / (y * 2.0) return math.tan(t_0) / math.sin(t_0)
function code(x, y) t_0 = Float64(x / Float64(y * 2.0)) return Float64(tan(t_0) / sin(t_0)) end
function tmp = code(x, y) t_0 = x / (y * 2.0); tmp = tan(t_0) / sin(t_0); end
code[x_, y_] := Block[{t$95$0 = N[(x / N[(y * 2.0), $MachinePrecision]), $MachinePrecision]}, N[(N[Tan[t$95$0], $MachinePrecision] / N[Sin[t$95$0], $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := \frac{x}{y \cdot 2}\\
\frac{\tan t_0}{\sin t_0}
\end{array}
\end{array}
NOTE: x should be positive before calling this function
NOTE: y should be positive before calling this function
(FPCore (x y)
:precision binary64
(log
(+
1.0
(expm1
(/
1.0
(cos
(exp
(*
(pow (cbrt (- (log (* x 0.5)) (log y))) 2.0)
(cbrt (log (* x (/ 0.5 y))))))))))))x = abs(x);
y = abs(y);
double code(double x, double y) {
return log((1.0 + expm1((1.0 / cos(exp((pow(cbrt((log((x * 0.5)) - log(y))), 2.0) * cbrt(log((x * (0.5 / y)))))))))));
}
x = Math.abs(x);
y = Math.abs(y);
public static double code(double x, double y) {
return Math.log((1.0 + Math.expm1((1.0 / Math.cos(Math.exp((Math.pow(Math.cbrt((Math.log((x * 0.5)) - Math.log(y))), 2.0) * Math.cbrt(Math.log((x * (0.5 / y)))))))))));
}
x = abs(x) y = abs(y) function code(x, y) return log(Float64(1.0 + expm1(Float64(1.0 / cos(exp(Float64((cbrt(Float64(log(Float64(x * 0.5)) - log(y))) ^ 2.0) * cbrt(log(Float64(x * Float64(0.5 / y))))))))))) end
NOTE: x should be positive before calling this function NOTE: y should be positive before calling this function code[x_, y_] := N[Log[N[(1.0 + N[(Exp[N[(1.0 / N[Cos[N[Exp[N[(N[Power[N[Power[N[(N[Log[N[(x * 0.5), $MachinePrecision]], $MachinePrecision] - N[Log[y], $MachinePrecision]), $MachinePrecision], 1/3], $MachinePrecision], 2.0], $MachinePrecision] * N[Power[N[Log[N[(x * N[(0.5 / y), $MachinePrecision]), $MachinePrecision]], $MachinePrecision], 1/3], $MachinePrecision]), $MachinePrecision]], $MachinePrecision]], $MachinePrecision]), $MachinePrecision]] - 1), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]
\begin{array}{l}
x = |x|\\
y = |y|\\
\\
\log \left(1 + \mathsf{expm1}\left(\frac{1}{\cos \left(e^{{\left(\sqrt[3]{\log \left(x \cdot 0.5\right) - \log y}\right)}^{2} \cdot \sqrt[3]{\log \left(x \cdot \frac{0.5}{y}\right)}}\right)}\right)\right)
\end{array}
Initial program 43.7%
log1p-expm1-u43.7%
log1p-udef43.7%
div-inv42.8%
tan-quot42.8%
associate-*l/42.8%
pow142.8%
inv-pow42.8%
pow-prod-up53.8%
metadata-eval53.8%
metadata-eval53.8%
div-inv54.1%
*-commutative54.1%
associate-/r*54.1%
metadata-eval54.1%
Applied egg-rr54.1%
add-exp-log33.5%
Applied egg-rr33.5%
add-cube-cbrt33.5%
pow233.5%
Applied egg-rr33.5%
associate-*r/33.5%
log-div15.2%
Applied egg-rr15.2%
Final simplification15.2%
NOTE: x should be positive before calling this function NOTE: y should be positive before calling this function (FPCore (x y) :precision binary64 (let* ((t_0 (cbrt (log (* x (/ 0.5 y)))))) (log (+ 1.0 (expm1 (/ 1.0 (cos (exp (* t_0 (pow t_0 2.0))))))))))
x = abs(x);
y = abs(y);
double code(double x, double y) {
double t_0 = cbrt(log((x * (0.5 / y))));
return log((1.0 + expm1((1.0 / cos(exp((t_0 * pow(t_0, 2.0))))))));
}
x = Math.abs(x);
y = Math.abs(y);
public static double code(double x, double y) {
double t_0 = Math.cbrt(Math.log((x * (0.5 / y))));
return Math.log((1.0 + Math.expm1((1.0 / Math.cos(Math.exp((t_0 * Math.pow(t_0, 2.0))))))));
}
x = abs(x) y = abs(y) function code(x, y) t_0 = cbrt(log(Float64(x * Float64(0.5 / y)))) return log(Float64(1.0 + expm1(Float64(1.0 / cos(exp(Float64(t_0 * (t_0 ^ 2.0)))))))) end
NOTE: x should be positive before calling this function
NOTE: y should be positive before calling this function
code[x_, y_] := Block[{t$95$0 = N[Power[N[Log[N[(x * N[(0.5 / y), $MachinePrecision]), $MachinePrecision]], $MachinePrecision], 1/3], $MachinePrecision]}, N[Log[N[(1.0 + N[(Exp[N[(1.0 / N[Cos[N[Exp[N[(t$95$0 * N[Power[t$95$0, 2.0], $MachinePrecision]), $MachinePrecision]], $MachinePrecision]], $MachinePrecision]), $MachinePrecision]] - 1), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]]
\begin{array}{l}
x = |x|\\
y = |y|\\
\\
\begin{array}{l}
t_0 := \sqrt[3]{\log \left(x \cdot \frac{0.5}{y}\right)}\\
\log \left(1 + \mathsf{expm1}\left(\frac{1}{\cos \left(e^{t_0 \cdot {t_0}^{2}}\right)}\right)\right)
\end{array}
\end{array}
Initial program 43.7%
log1p-expm1-u43.7%
log1p-udef43.7%
div-inv42.8%
tan-quot42.8%
associate-*l/42.8%
pow142.8%
inv-pow42.8%
pow-prod-up53.8%
metadata-eval53.8%
metadata-eval53.8%
div-inv54.1%
*-commutative54.1%
associate-/r*54.1%
metadata-eval54.1%
Applied egg-rr54.1%
add-exp-log33.5%
Applied egg-rr33.5%
add-cube-cbrt33.5%
pow233.5%
Applied egg-rr33.5%
Final simplification33.5%
NOTE: x should be positive before calling this function NOTE: y should be positive before calling this function (FPCore (x y) :precision binary64 1.0)
x = abs(x);
y = abs(y);
double code(double x, double y) {
return 1.0;
}
NOTE: x should be positive before calling this function
NOTE: y should be positive before calling this function
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
code = 1.0d0
end function
x = Math.abs(x);
y = Math.abs(y);
public static double code(double x, double y) {
return 1.0;
}
x = abs(x) y = abs(y) def code(x, y): return 1.0
x = abs(x) y = abs(y) function code(x, y) return 1.0 end
x = abs(x) y = abs(y) function tmp = code(x, y) tmp = 1.0; end
NOTE: x should be positive before calling this function NOTE: y should be positive before calling this function code[x_, y_] := 1.0
\begin{array}{l}
x = |x|\\
y = |y|\\
\\
1
\end{array}
Initial program 43.7%
Taylor expanded in x around 0 54.7%
Final simplification54.7%
(FPCore (x y)
:precision binary64
(let* ((t_0 (/ x (* y 2.0))) (t_1 (sin t_0)))
(if (< y -1.2303690911306994e+114)
1.0
(if (< y -9.102852406811914e-222)
(/ t_1 (* t_1 (log (exp (cos t_0)))))
1.0))))
double code(double x, double y) {
double t_0 = x / (y * 2.0);
double t_1 = sin(t_0);
double tmp;
if (y < -1.2303690911306994e+114) {
tmp = 1.0;
} else if (y < -9.102852406811914e-222) {
tmp = t_1 / (t_1 * log(exp(cos(t_0))));
} else {
tmp = 1.0;
}
return tmp;
}
real(8) function code(x, y)
real(8), intent (in) :: x
real(8), intent (in) :: y
real(8) :: t_0
real(8) :: t_1
real(8) :: tmp
t_0 = x / (y * 2.0d0)
t_1 = sin(t_0)
if (y < (-1.2303690911306994d+114)) then
tmp = 1.0d0
else if (y < (-9.102852406811914d-222)) then
tmp = t_1 / (t_1 * log(exp(cos(t_0))))
else
tmp = 1.0d0
end if
code = tmp
end function
public static double code(double x, double y) {
double t_0 = x / (y * 2.0);
double t_1 = Math.sin(t_0);
double tmp;
if (y < -1.2303690911306994e+114) {
tmp = 1.0;
} else if (y < -9.102852406811914e-222) {
tmp = t_1 / (t_1 * Math.log(Math.exp(Math.cos(t_0))));
} else {
tmp = 1.0;
}
return tmp;
}
def code(x, y): t_0 = x / (y * 2.0) t_1 = math.sin(t_0) tmp = 0 if y < -1.2303690911306994e+114: tmp = 1.0 elif y < -9.102852406811914e-222: tmp = t_1 / (t_1 * math.log(math.exp(math.cos(t_0)))) else: tmp = 1.0 return tmp
function code(x, y) t_0 = Float64(x / Float64(y * 2.0)) t_1 = sin(t_0) tmp = 0.0 if (y < -1.2303690911306994e+114) tmp = 1.0; elseif (y < -9.102852406811914e-222) tmp = Float64(t_1 / Float64(t_1 * log(exp(cos(t_0))))); else tmp = 1.0; end return tmp end
function tmp_2 = code(x, y) t_0 = x / (y * 2.0); t_1 = sin(t_0); tmp = 0.0; if (y < -1.2303690911306994e+114) tmp = 1.0; elseif (y < -9.102852406811914e-222) tmp = t_1 / (t_1 * log(exp(cos(t_0)))); else tmp = 1.0; end tmp_2 = tmp; end
code[x_, y_] := Block[{t$95$0 = N[(x / N[(y * 2.0), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$1 = N[Sin[t$95$0], $MachinePrecision]}, If[Less[y, -1.2303690911306994e+114], 1.0, If[Less[y, -9.102852406811914e-222], N[(t$95$1 / N[(t$95$1 * N[Log[N[Exp[N[Cos[t$95$0], $MachinePrecision]], $MachinePrecision]], $MachinePrecision]), $MachinePrecision]), $MachinePrecision], 1.0]]]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := \frac{x}{y \cdot 2}\\
t_1 := \sin t_0\\
\mathbf{if}\;y < -1.2303690911306994 \cdot 10^{+114}:\\
\;\;\;\;1\\
\mathbf{elif}\;y < -9.102852406811914 \cdot 10^{-222}:\\
\;\;\;\;\frac{t_1}{t_1 \cdot \log \left(e^{\cos t_0}\right)}\\
\mathbf{else}:\\
\;\;\;\;1\\
\end{array}
\end{array}
herbie shell --seed 2023279
(FPCore (x y)
:name "Diagrams.TwoD.Layout.CirclePacking:approxRadius from diagrams-contrib-1.3.0.5"
:precision binary64
:herbie-target
(if (< y -1.2303690911306994e+114) 1.0 (if (< y -9.102852406811914e-222) (/ (sin (/ x (* y 2.0))) (* (sin (/ x (* y 2.0))) (log (exp (cos (/ x (* y 2.0))))))) 1.0))
(/ (tan (/ x (* y 2.0))) (sin (/ x (* y 2.0)))))