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This commit is contained in:
John Wellbelove 2025-03-31 20:25:33 +01:00
parent 83e8473864
commit e46563fafc
2 changed files with 627 additions and 263 deletions
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11
include/etl/scaled_rounding.h
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@ -154,7 +154,6 @@ namespace etl
T round_half_up_unscaled(T value) ETL_NOEXCEPT
{
ETL_STATIC_ASSERT(etl::is_integral<T>::value, "Type must be an integral");
ETL_STATIC_ASSERT((Scaling == 1) || (((Scaling / 2U) * 2U) == Scaling), "Scaling must be divisible by 2");
typedef typename scaled_rounding_t<T>::type scale_t;
if (Scaling == 1)
@ -202,16 +201,20 @@ namespace etl
T round_half_down_unscaled(T value) ETL_NOEXCEPT
{
ETL_STATIC_ASSERT(etl::is_integral<T>::value, "Type must be an integral");
ETL_STATIC_ASSERT((Scaling == 1) || (((Scaling / 2U) * 2U) == Scaling), "Scaling must be divisible by 2");
typedef typename scaled_rounding_t<T>::type scale_t;
if (Scaling == 1)
{
return value;
}
if (value >= 0)
{
return T((value + scale_t(((Scaling - 1) / 2U))) / scale_t(Scaling));
return T((value + scale_t((Scaling - 1) / 2U)) / scale_t(Scaling));
}
else
{
return T((value - scale_t(((Scaling - 1) / 2U))) / scale_t(Scaling));
return T((value - scale_t((Scaling - 1) / 2U)) / scale_t(Scaling));
}
}

879
test/test_scaled_rounding.cpp
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