update boost

linx64/include/boost/math/differentiation/finite_difference.hpp

@@ -153,7 +153,7 @@ namespace detail {
 
       const Real eps = (numeric_limits<Real>::epsilon)();
       // Error bound ~eps^4/5
-      Real h = pow(11.25*eps, (Real)1 / (Real)5);
+      Real h = pow(Real(11.25)*eps, static_cast<Real>(1) / static_cast<Real>(5));
       h = detail::make_xph_representable(x, h);
       Real ymth = f(x - 2 * h);
       Real yth = f(x + 2 * h);
@@ -186,7 +186,7 @@ namespace detail {
       const Real eps = (numeric_limits<Real>::epsilon)();
       // Error bound ~eps^6/7
       // Error: h^6f^(7)(x)/140 + 5|f(x)|eps/h
-      Real h = pow(eps / 168, (Real)1 / (Real)7);
+      Real h = pow(eps / 168, static_cast<Real>(1) / static_cast<Real>(7));
       h = detail::make_xph_representable(x, h);
 
       Real yh = f(x + h);
@@ -222,7 +222,7 @@ namespace detail {
       // Mathematica code to get the error:
       // Series[(f[x+h]-f[x-h])*(4/5) + (1/5)*(f[x-2*h] - f[x+2*h]) + (4/105)*(f[x+3*h] - f[x-3*h]) + (1/280)*(f[x-4*h] - f[x+4*h]), {h, 0, 9}]
       // If we used Kahan summation, we could get the max error down to h^8|f^(9)(x)|/630 + |f(x)|eps/h.
-      Real h = pow(551.25*eps, (Real)1 / (Real)9);
+      Real h = pow(Real(551.25)*eps, static_cast<Real>(1) / static_cast<Real>(9));
       h = detail::make_xph_representable(x, h);
 
       Real yh = f(x + h);
@@ -251,7 +251,7 @@ namespace detail {
    Real finite_difference_derivative(const F, Real, Real*, const tag&)
    {
       // Always fails, but condition is template-arg-dependent so only evaluated if we get instantiated.
-      BOOST_STATIC_ASSERT_MSG(sizeof(Real) == 0, "Finite difference not implemented for this order: try 1, 2, 4, 6 or 8");
+      static_assert(sizeof(Real) == 0, "Finite difference not implemented for this order: try 1, 2, 4, 6 or 8");
    }
 
 }