boost/multiprecision
2
0
Fork 0
mirror of https://github.com/boostorg/multiprecision.git synced 2026-01-19 04:22:11 +00:00
Code Issues Projects Releases Wiki Activity

Streamline one of the eval_pow overloads

Browse Source
This commit is contained in:
ckormanyos
2025-07-14 18:46:39 +02:00
parent daaea2952d
commit 5465bdddf0
1 changed files with 10 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
include/boost/multiprecision/detail/functions/pow.hpp
View File

@@ -488,8 +488,6 @@ template <typename T>
inline void eval_pow(T& result, const T& x, const T& a)
{
static_assert(number_category<T>::value == number_kind_floating_point, "The pow function is only valid for floating point types.");
using si_type = typename boost::multiprecision::detail::canonical<int, T>::type;
using fp_type = typename std::tuple_element<0, typename T::float_types>::type ;
if ((&result == &x) || (&result == &a))
{
@@ -499,21 +497,25 @@ inline void eval_pow(T& result, const T& x, const T& a)
return;
}
using si_type = typename boost::multiprecision::detail::canonical<int, T>::type;
using fp_type = typename std::tuple_element<0, typename T::float_types>::type;
if ((a.compare(si_type(1)) == 0) || (x.compare(si_type(1)) == 0))
{
result = x;
return;
}
if (a.compare(si_type(0)) == 0)
const int fpc_x { eval_fpclassify(x) };
const int fpc_a { eval_fpclassify(a) };
if (fpc_a == FP_ZERO)
{
result = si_type(1);
return;
}
int type = eval_fpclassify(x);
int fpc_a = eval_fpclassify(a);
switch (type)
switch (fpc_x)
{
case FP_ZERO:
switch (fpc_a)
@@ -657,7 +659,7 @@ inline void eval_pow(T& result, const T& x, const T& a)
result = si_type(0);
}
}
else if (type == FP_INFINITE)
else if (fpc_x == FP_INFINITE)
{
BOOST_IF_CONSTEXPR (std::numeric_limits<number<T, et_on> >::has_quiet_NaN)
{