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Fixed abs function for half based types

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This commit is contained in:
Christophe Riccio
2012-11-06 01:23:14 +01:00
parent cdf5d19275
commit 1fb8bec873
3 changed files with 86 additions and 40 deletions
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56
glm/core/func_common.inl
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@@ -60,19 +60,19 @@ namespace detail
// abs
template <typename genFIType>
GLM_FUNC_QUALIFIER genFIType abs
GLM_FUNC_QUALIFIER genFIType abs
(
genFIType const & x
)
{
{
return detail::Abs_<genFIType, std::numeric_limits<genFIType>::is_signed>::get(x);
}
}
VECTORIZE_VEC(abs)
// sign
// sign
//Try something like based on x >> 31 to get the sign bit
template <typename genFIType>
template <typename genFIType>
GLM_FUNC_QUALIFIER genFIType sign
(
genFIType const & x
@@ -81,43 +81,43 @@ namespace detail
GLM_STATIC_ASSERT(
detail::type<genFIType>::is_float ||
detail::type<genFIType>::is_int, "'sign' only accept signed inputs");
genFIType result;
if(x > genFIType(0))
result = genFIType(1);
else if(x < genFIType(0))
result = genFIType(-1);
else
result = genFIType(0);
return result;
result = genFIType(1);
else if(x < genFIType(0))
result = genFIType(-1);
else
result = genFIType(0);
return result;
}
VECTORIZE_VEC(sign)
// floor
template <>
// floor
template <>
GLM_FUNC_QUALIFIER detail::half floor<detail::half>(detail::half const & x)
{
return detail::half(::std::floor(float(x)));
}
{
return detail::half(::std::floor(float(x)));
}
template <typename genType>
GLM_FUNC_QUALIFIER genType floor(genType const & x)
{
template <typename genType>
GLM_FUNC_QUALIFIER genType floor(genType const & x)
{
GLM_STATIC_ASSERT(detail::type<genType>::is_float, "'floor' only accept floating-point inputs");
return ::std::floor(x);
}
return ::std::floor(x);
}
VECTORIZE_VEC(floor)
// trunc
template <typename genType>
GLM_FUNC_QUALIFIER genType trunc(genType const & x)
{
// trunc
template <typename genType>
GLM_FUNC_QUALIFIER genType trunc(genType const & x)
{
GLM_STATIC_ASSERT(detail::type<genType>::is_float, "'trunc' only accept floating-point inputs");
return x < 0 ? -floor(-x) : floor(x);
}
return x < 0 ? -floor(-x) : floor(x);
}
VECTORIZE_VEC(trunc)