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Add trunc() and fract() for util::fixed_point

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This commit is contained in:
Nikita Lisitsa 2026-08-14 16:34:58 +03:00
parent d42639edba
commit abec5474f0
1 changed files with 19 additions and 0 deletions
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19
libs/util/include/psemek/util/fixed_point.hpp
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@ -363,6 +363,25 @@ namespace psemek::util
return FP::from_rep(((x.rep() - static_cast<rep_type>(1)) & ~fractional_mask) + fixed_point_one); return FP::from_rep(((x.rep() - static_cast<rep_type>(1)) & ~fractional_mask) + fixed_point_one);
} }
template <unsigned int I, unsigned int F, bool S>
constexpr fixed_point<I, F, S> trunc(fixed_point<I, F, S> x)
{
if (S && x < fixed_point<I, F, S>{0})
{
return ceil(x);
}
else
{
return floor(x);
}
}
template <unsigned int I, unsigned int F, bool S>
constexpr fixed_point<I, F, S> fract(fixed_point<I, F, S> x)
{
return x - trunc(x);
}
template <unsigned int I, unsigned int F, bool S> template <unsigned int I, unsigned int F, bool S>
constexpr fixed_point<I, F, S> round(fixed_point<I, F, S> x) constexpr fixed_point<I, F, S> round(fixed_point<I, F, S> x)
{ {