
(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 6 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}
y_m = (fabs.f64 y) x_m = (fabs.f64 x) (FPCore (x_m y_m) :precision binary64 (if (<= (/ x_m (* 2.0 y_m)) 8e+31) (/ 1.0 (cos (* (/ x_m y_m) -0.5))) 1.0))
y_m = fabs(y);
x_m = fabs(x);
double code(double x_m, double y_m) {
double tmp;
if ((x_m / (2.0 * y_m)) <= 8e+31) {
tmp = 1.0 / cos(((x_m / y_m) * -0.5));
} else {
tmp = 1.0;
}
return tmp;
}
y_m = abs(y)
x_m = abs(x)
real(8) function code(x_m, y_m)
real(8), intent (in) :: x_m
real(8), intent (in) :: y_m
real(8) :: tmp
if ((x_m / (2.0d0 * y_m)) <= 8d+31) then
tmp = 1.0d0 / cos(((x_m / y_m) * (-0.5d0)))
else
tmp = 1.0d0
end if
code = tmp
end function
y_m = Math.abs(y);
x_m = Math.abs(x);
public static double code(double x_m, double y_m) {
double tmp;
if ((x_m / (2.0 * y_m)) <= 8e+31) {
tmp = 1.0 / Math.cos(((x_m / y_m) * -0.5));
} else {
tmp = 1.0;
}
return tmp;
}
y_m = math.fabs(y) x_m = math.fabs(x) def code(x_m, y_m): tmp = 0 if (x_m / (2.0 * y_m)) <= 8e+31: tmp = 1.0 / math.cos(((x_m / y_m) * -0.5)) else: tmp = 1.0 return tmp
y_m = abs(y) x_m = abs(x) function code(x_m, y_m) tmp = 0.0 if (Float64(x_m / Float64(2.0 * y_m)) <= 8e+31) tmp = Float64(1.0 / cos(Float64(Float64(x_m / y_m) * -0.5))); else tmp = 1.0; end return tmp end
y_m = abs(y); x_m = abs(x); function tmp_2 = code(x_m, y_m) tmp = 0.0; if ((x_m / (2.0 * y_m)) <= 8e+31) tmp = 1.0 / cos(((x_m / y_m) * -0.5)); else tmp = 1.0; end tmp_2 = tmp; end
y_m = N[Abs[y], $MachinePrecision] x_m = N[Abs[x], $MachinePrecision] code[x$95$m_, y$95$m_] := If[LessEqual[N[(x$95$m / N[(2.0 * y$95$m), $MachinePrecision]), $MachinePrecision], 8e+31], N[(1.0 / N[Cos[N[(N[(x$95$m / y$95$m), $MachinePrecision] * -0.5), $MachinePrecision]], $MachinePrecision]), $MachinePrecision], 1.0]
\begin{array}{l}
y_m = \left|y\right|
\\
x_m = \left|x\right|
\\
\begin{array}{l}
\mathbf{if}\;\frac{x\_m}{2 \cdot y\_m} \leq 8 \cdot 10^{+31}:\\
\;\;\;\;\frac{1}{\cos \left(\frac{x\_m}{y\_m} \cdot -0.5\right)}\\
\mathbf{else}:\\
\;\;\;\;1\\
\end{array}
\end{array}
if (/.f64 x (*.f64 y #s(literal 2 binary64))) < 7.9999999999999997e31Initial program 73.3%
lift-/.f64N/A
clear-numN/A
lower-/.f64N/A
lift-tan.f64N/A
tan-quotN/A
lift-sin.f64N/A
associate-/r/N/A
*-inversesN/A
remove-double-negN/A
distribute-rgt-neg-inN/A
distribute-lft-neg-inN/A
metadata-evalN/A
neg-mul-1N/A
remove-double-negN/A
cos-negN/A
lift-/.f64N/A
distribute-frac-neg2N/A
lower-cos.f64N/A
distribute-frac-neg2N/A
lift-*.f64N/A
Applied rewrites96.6%
if 7.9999999999999997e31 < (/.f64 x (*.f64 y #s(literal 2 binary64))) Initial program 7.4%
Taylor expanded in x around 0
Applied rewrites11.0%
Final simplification56.8%
y_m = (fabs.f64 y) x_m = (fabs.f64 x) (FPCore (x_m y_m) :precision binary64 (/ 1.0 (cos (* (* (sqrt x_m) (exp (fma (log x_m) 0.5 (- (log y_m))))) -0.5))))
y_m = fabs(y);
x_m = fabs(x);
double code(double x_m, double y_m) {
return 1.0 / cos(((sqrt(x_m) * exp(fma(log(x_m), 0.5, -log(y_m)))) * -0.5));
}
y_m = abs(y) x_m = abs(x) function code(x_m, y_m) return Float64(1.0 / cos(Float64(Float64(sqrt(x_m) * exp(fma(log(x_m), 0.5, Float64(-log(y_m))))) * -0.5))) end
y_m = N[Abs[y], $MachinePrecision] x_m = N[Abs[x], $MachinePrecision] code[x$95$m_, y$95$m_] := N[(1.0 / N[Cos[N[(N[(N[Sqrt[x$95$m], $MachinePrecision] * N[Exp[N[(N[Log[x$95$m], $MachinePrecision] * 0.5 + (-N[Log[y$95$m], $MachinePrecision])), $MachinePrecision]], $MachinePrecision]), $MachinePrecision] * -0.5), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
y_m = \left|y\right|
\\
x_m = \left|x\right|
\\
\frac{1}{\cos \left(\left(\sqrt{x\_m} \cdot e^{\mathsf{fma}\left(\log x\_m, 0.5, -\log y\_m\right)}\right) \cdot -0.5\right)}
\end{array}
Initial program 43.7%
lift-/.f64N/A
clear-numN/A
lower-/.f64N/A
lift-tan.f64N/A
tan-quotN/A
lift-sin.f64N/A
associate-/r/N/A
*-inversesN/A
remove-double-negN/A
distribute-rgt-neg-inN/A
distribute-lft-neg-inN/A
metadata-evalN/A
neg-mul-1N/A
remove-double-negN/A
cos-negN/A
lift-/.f64N/A
distribute-frac-neg2N/A
lower-cos.f64N/A
distribute-frac-neg2N/A
lift-*.f64N/A
Applied rewrites55.2%
lift-/.f64N/A
clear-numN/A
inv-powN/A
div-invN/A
unpow-prod-downN/A
inv-powN/A
lower-*.f64N/A
lower-/.f64N/A
lower-pow.f64N/A
lower-/.f6455.2
Applied rewrites55.2%
lift-*.f64N/A
lift-pow.f64N/A
sqr-powN/A
associate-*r*N/A
lower-*.f64N/A
lift-/.f64N/A
associate-*l/N/A
*-lft-identityN/A
lower-/.f64N/A
lift-/.f64N/A
inv-powN/A
metadata-evalN/A
pow-powN/A
metadata-evalN/A
unpow1/2N/A
lower-sqrt.f64N/A
lift-/.f64N/A
inv-powN/A
metadata-evalN/A
pow-powN/A
metadata-evalN/A
unpow1/2N/A
lower-sqrt.f6455.2
Applied rewrites55.2%
lift-/.f64N/A
div-invN/A
lift-sqrt.f64N/A
pow1/2N/A
pow-to-expN/A
inv-powN/A
exp-to-powN/A
lift-log.f64N/A
prod-expN/A
lower-exp.f64N/A
lift-log.f64N/A
lower-fma.f64N/A
*-commutativeN/A
mul-1-negN/A
lower-neg.f6454.8
Applied rewrites54.8%
Final simplification54.8%
(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 2024230
(FPCore (x y)
:name "Diagrams.TwoD.Layout.CirclePacking:approxRadius from diagrams-contrib-1.3.0.5"
:precision binary64
:alt
(! :herbie-platform default (if (< y -1230369091130699400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000) 1 (if (< y -4551426203405957/500000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000) (/ (sin (/ x (* y 2))) (* (sin (/ x (* y 2))) (log (exp (cos (/ x (* y 2))))))) 1)))
(/ (tan (/ x (* y 2.0))) (sin (/ x (* y 2.0)))))