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--- a/boost/math/tools/roots.hpp
+++ b/boost/math/tools/roots.hpp
@@ -665,8 +665,8 @@ namespace detail
inline T discriminant(T const & a, T const & b, T const & c)
{
T w = 4*a*c;
- T e = std::fma(-c, 4*a, w);
- T f = std::fma(b, b, -w);
+ T e = fma(-c, 4*a, w);
+ T f = fma(b, b, -w);
return f + e;
}
}
@@ -674,7 +674,6 @@ namespace detail
template<class T>
auto quadratic_roots(T const& a, T const& b, T const& c)
{
- using std::copysign;
using std::sqrt;
if constexpr (std::is_integral<T>::value)
{