diff options
Diffstat (limited to 'glm-master/glm/ext/scalar_integer.inl')
-rw-r--r-- | glm-master/glm/ext/scalar_integer.inl | 243 |
1 files changed, 0 insertions, 243 deletions
diff --git a/glm-master/glm/ext/scalar_integer.inl b/glm-master/glm/ext/scalar_integer.inl deleted file mode 100644 index efba960..0000000 --- a/glm-master/glm/ext/scalar_integer.inl +++ /dev/null @@ -1,243 +0,0 @@ -#include "../integer.hpp" - -namespace glm{ -namespace detail -{ - template<length_t L, typename T, qualifier Q, bool compute = false> - struct compute_ceilShift - { - GLM_FUNC_QUALIFIER static vec<L, T, Q> call(vec<L, T, Q> const& v, T) - { - return v; - } - }; - - template<length_t L, typename T, qualifier Q> - struct compute_ceilShift<L, T, Q, true> - { - GLM_FUNC_QUALIFIER static vec<L, T, Q> call(vec<L, T, Q> const& v, T Shift) - { - return v | (v >> Shift); - } - }; - - template<length_t L, typename T, qualifier Q, bool isSigned = true> - struct compute_ceilPowerOfTwo - { - GLM_FUNC_QUALIFIER static vec<L, T, Q> call(vec<L, T, Q> const& x) - { - GLM_STATIC_ASSERT(!std::numeric_limits<T>::is_iec559, "'ceilPowerOfTwo' only accept integer scalar or vector inputs"); - - vec<L, T, Q> const Sign(sign(x)); - - vec<L, T, Q> v(abs(x)); - - v = v - static_cast<T>(1); - v = v | (v >> static_cast<T>(1)); - v = v | (v >> static_cast<T>(2)); - v = v | (v >> static_cast<T>(4)); - v = compute_ceilShift<L, T, Q, sizeof(T) >= 2>::call(v, 8); - v = compute_ceilShift<L, T, Q, sizeof(T) >= 4>::call(v, 16); - v = compute_ceilShift<L, T, Q, sizeof(T) >= 8>::call(v, 32); - return (v + static_cast<T>(1)) * Sign; - } - }; - - template<length_t L, typename T, qualifier Q> - struct compute_ceilPowerOfTwo<L, T, Q, false> - { - GLM_FUNC_QUALIFIER static vec<L, T, Q> call(vec<L, T, Q> const& x) - { - GLM_STATIC_ASSERT(!std::numeric_limits<T>::is_iec559, "'ceilPowerOfTwo' only accept integer scalar or vector inputs"); - - vec<L, T, Q> v(x); - - v = v - static_cast<T>(1); - v = v | (v >> static_cast<T>(1)); - v = v | (v >> static_cast<T>(2)); - v = v | (v >> static_cast<T>(4)); - v = compute_ceilShift<L, T, Q, sizeof(T) >= 2>::call(v, 8); - v = compute_ceilShift<L, T, Q, sizeof(T) >= 4>::call(v, 16); - v = compute_ceilShift<L, T, Q, sizeof(T) >= 8>::call(v, 32); - return v + static_cast<T>(1); - } - }; - - template<bool is_float, bool is_signed> - struct compute_ceilMultiple{}; - - template<> - struct compute_ceilMultiple<true, true> - { - template<typename genType> - GLM_FUNC_QUALIFIER static genType call(genType Source, genType Multiple) - { - if(Source > genType(0)) - return Source + (Multiple - std::fmod(Source, Multiple)); - else - return Source + std::fmod(-Source, Multiple); - } - }; - - template<> - struct compute_ceilMultiple<false, false> - { - template<typename genType> - GLM_FUNC_QUALIFIER static genType call(genType Source, genType Multiple) - { - genType Tmp = Source - genType(1); - return Tmp + (Multiple - (Tmp % Multiple)); - } - }; - - template<> - struct compute_ceilMultiple<false, true> - { - template<typename genType> - GLM_FUNC_QUALIFIER static genType call(genType Source, genType Multiple) - { - assert(Multiple > genType(0)); - if(Source > genType(0)) - { - genType Tmp = Source - genType(1); - return Tmp + (Multiple - (Tmp % Multiple)); - } - else - return Source + (-Source % Multiple); - } - }; - - template<bool is_float, bool is_signed> - struct compute_floorMultiple{}; - - template<> - struct compute_floorMultiple<true, true> - { - template<typename genType> - GLM_FUNC_QUALIFIER static genType call(genType Source, genType Multiple) - { - if(Source >= genType(0)) - return Source - std::fmod(Source, Multiple); - else - return Source - std::fmod(Source, Multiple) - Multiple; - } - }; - - template<> - struct compute_floorMultiple<false, false> - { - template<typename genType> - GLM_FUNC_QUALIFIER static genType call(genType Source, genType Multiple) - { - if(Source >= genType(0)) - return Source - Source % Multiple; - else - { - genType Tmp = Source + genType(1); - return Tmp - Tmp % Multiple - Multiple; - } - } - }; - - template<> - struct compute_floorMultiple<false, true> - { - template<typename genType> - GLM_FUNC_QUALIFIER static genType call(genType Source, genType Multiple) - { - if(Source >= genType(0)) - return Source - Source % Multiple; - else - { - genType Tmp = Source + genType(1); - return Tmp - Tmp % Multiple - Multiple; - } - } - }; -}//namespace detail - - template<typename genIUType> - GLM_FUNC_QUALIFIER bool isPowerOfTwo(genIUType Value) - { - GLM_STATIC_ASSERT(std::numeric_limits<genIUType>::is_integer, "'isPowerOfTwo' only accept integer inputs"); - - genIUType const Result = glm::abs(Value); - return !(Result & (Result - 1)); - } - - template<typename genIUType> - GLM_FUNC_QUALIFIER genIUType nextPowerOfTwo(genIUType value) - { - GLM_STATIC_ASSERT(std::numeric_limits<genIUType>::is_integer, "'nextPowerOfTwo' only accept integer inputs"); - - return detail::compute_ceilPowerOfTwo<1, genIUType, defaultp, std::numeric_limits<genIUType>::is_signed>::call(vec<1, genIUType, defaultp>(value)).x; - } - - template<typename genIUType> - GLM_FUNC_QUALIFIER genIUType prevPowerOfTwo(genIUType value) - { - GLM_STATIC_ASSERT(std::numeric_limits<genIUType>::is_integer, "'prevPowerOfTwo' only accept integer inputs"); - - return isPowerOfTwo(value) ? value : static_cast<genIUType>(static_cast<genIUType>(1) << static_cast<genIUType>(findMSB(value))); - } - - template<typename genIUType> - GLM_FUNC_QUALIFIER bool isMultiple(genIUType Value, genIUType Multiple) - { - GLM_STATIC_ASSERT(std::numeric_limits<genIUType>::is_integer, "'isMultiple' only accept integer inputs"); - - return isMultiple(vec<1, genIUType>(Value), vec<1, genIUType>(Multiple)).x; - } - - template<typename genIUType> - GLM_FUNC_QUALIFIER genIUType nextMultiple(genIUType Source, genIUType Multiple) - { - GLM_STATIC_ASSERT(std::numeric_limits<genIUType>::is_integer, "'nextMultiple' only accept integer inputs"); - - return detail::compute_ceilMultiple<std::numeric_limits<genIUType>::is_iec559, std::numeric_limits<genIUType>::is_signed>::call(Source, Multiple); - } - - template<typename genIUType> - GLM_FUNC_QUALIFIER genIUType prevMultiple(genIUType Source, genIUType Multiple) - { - GLM_STATIC_ASSERT(std::numeric_limits<genIUType>::is_integer, "'prevMultiple' only accept integer inputs"); - - return detail::compute_floorMultiple<std::numeric_limits<genIUType>::is_iec559, std::numeric_limits<genIUType>::is_signed>::call(Source, Multiple); - } - - template<typename genIUType> - GLM_FUNC_QUALIFIER int findNSB(genIUType x, int significantBitCount) - { - GLM_STATIC_ASSERT(std::numeric_limits<genIUType>::is_integer, "'findNSB' only accept integer inputs"); - - if(bitCount(x) < significantBitCount) - return -1; - - genIUType const One = static_cast<genIUType>(1); - int bitPos = 0; - - genIUType key = x; - int nBitCount = significantBitCount; - int Step = sizeof(x) * 8 / 2; - while (key > One) - { - genIUType Mask = static_cast<genIUType>((One << Step) - One); - genIUType currentKey = key & Mask; - int currentBitCount = bitCount(currentKey); - if (nBitCount > currentBitCount) - { - nBitCount -= currentBitCount; - bitPos += Step; - key >>= static_cast<genIUType>(Step); - } - else - { - key = key & Mask; - } - - Step >>= 1; - } - - return static_cast<int>(bitPos); - } -}//namespace glm |