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Adding constexpr for sign(vec) and sign(genFIType)

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RohacekD 2020-12-08 02:13:21 +01:00 committed by Dominik Roháček
parent c8ca18942b
commit 3b546eb011
2 changed files with 5 additions and 5 deletions
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2
glm/common.hpp
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@ -51,7 +51,7 @@ namespace glm
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/sign.xml">GLSL sign man page</a>
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
template<length_t L, typename T, qualifier Q>
GLM_FUNC_DECL vec<L, T, Q> sign(vec<L, T, Q> const& x);
GLM_FUNC_DECL GLM_CONSTEXPR vec<L, T, Q> sign(vec<L, T, Q> const& x);
/// Returns a value equal to the nearest integer that is less then or equal to x.
///

8
glm/detail/func_common.inl
View File

@ -143,7 +143,7 @@ namespace detail
template<length_t L, typename T, qualifier Q, bool isFloat, bool Aligned>
struct compute_sign
{
GLM_FUNC_QUALIFIER static vec<L, T, Q> call(vec<L, T, Q> const& x)
GLM_FUNC_QUALIFIER GLM_CONSTEXPR static vec<L, T, Q> call(vec<L, T, Q> const& x)
{
return vec<L, T, Q>(glm::lessThan(vec<L, T, Q>(0), x)) - vec<L, T, Q>(glm::lessThan(x, vec<L, T, Q>(0)));
}
@ -153,7 +153,7 @@ namespace detail
template<length_t L, typename T, qualifier Q, bool Aligned>
struct compute_sign<L, T, Q, false, Aligned>
{
GLM_FUNC_QUALIFIER static vec<L, T, Q> call(vec<L, T, Q> const& x)
GLM_FUNC_QUALIFIER GLM_CONSTEXPR static vec<L, T, Q> call(vec<L, T, Q> const& x)
{
T const Shift(static_cast<T>(sizeof(T) * 8 - 1));
vec<L, T, Q> const y(vec<L, typename detail::make_unsigned<T>::type, Q>(-x) >> typename detail::make_unsigned<T>::type(Shift));
@ -281,7 +281,7 @@ namespace detail
// sign
// fast and works for any type
template<typename genFIType>
GLM_FUNC_QUALIFIER genFIType sign(genFIType x)
GLM_FUNC_QUALIFIER GLM_CONSTEXPR genFIType sign(genFIType x)
{
GLM_STATIC_ASSERT(
std::numeric_limits<genFIType>::is_iec559 || (std::numeric_limits<genFIType>::is_signed && std::numeric_limits<genFIType>::is_integer),
@ -292,7 +292,7 @@ namespace detail
}
template<length_t L, typename T, qualifier Q>
GLM_FUNC_QUALIFIER vec<L, T, Q> sign(vec<L, T, Q> const& x)
GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<L, T, Q> sign(vec<L, T, Q> const& x)
{
GLM_STATIC_ASSERT(
std::numeric_limits<T>::is_iec559 || (std::numeric_limits<T>::is_signed && std::numeric_limits<T>::is_integer),