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https://github.com/g-truc/glm.git
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Fixed umulExtended and imulExtended implementations for vector types (#76)
This commit is contained in:
Christophe Riccio
parent
d1fe2d26bf
commit
d4046da22e
@ -50,9 +50,11 @@ namespace glm
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genUType & Carry
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)
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{
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detail::highp_uint_t Value64 = detail::highp_uint_t(x) + detail::highp_uint_t(y);
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genUType Result = genUType(Value64 % (detail::highp_uint_t(1) << detail::highp_uint_t(32)));
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Carry = (Value64 % (detail::highp_uint_t(1) << detail::highp_uint_t(32))) > 1 ? 1 : 0;
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GLM_STATIC_ASSERT(std::numeric_limits<genUType>::is_integer && !std::numeric_limits<genUType>::is_signed, "'uaddCarry' only accept unsigned integer inputs");
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uint64 Value64 = static_cast<uint64>(x) + static_cast<uint64>(y);
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genUType Result = genUType(Value64 % (static_cast<uint64>(1) << static_cast<uint64>(32)));
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Carry = (Value64 % (static_cast<uint64>(1) << static_cast<uint64>(32))) > 1 ? static_cast<genUType>(1) : static_cast<genUType>(0);
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return Result;
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}
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@ -64,6 +66,8 @@ namespace glm
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detail::tvec2<T, P> & Carry
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)
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{
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GLM_STATIC_ASSERT(std::numeric_limits<T>::is_integer && !std::numeric_limits<T>::is_signed, "'uaddCarry' only accept unsigned integer inputs");
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return detail::tvec2<T, P>(
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uaddCarry(x[0], y[0], Carry[0]),
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uaddCarry(x[1], y[1], Carry[1]));
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@ -77,6 +81,8 @@ namespace glm
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detail::tvec3<T, P> & Carry
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)
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{
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GLM_STATIC_ASSERT(std::numeric_limits<T>::is_integer && !std::numeric_limits<T>::is_signed, "'uaddCarry' only accept unsigned integer inputs");
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return detail::tvec3<T, P>(
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uaddCarry(x[0], y[0], Carry[0]),
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uaddCarry(x[1], y[1], Carry[1]),
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@ -91,6 +97,8 @@ namespace glm
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detail::tvec4<T, P> & Carry
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)
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{
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GLM_STATIC_ASSERT(std::numeric_limits<T>::is_integer && !std::numeric_limits<T>::is_signed, "'uaddCarry' only accept unsigned integer inputs");
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return detail::tvec4<T, P>(
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uaddCarry(x[0], y[0], Carry[0]),
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uaddCarry(x[1], y[1], Carry[1]),
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@ -107,11 +115,13 @@ namespace glm
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genUType & Borrow
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)
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{
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Borrow = x >= y ? 0 : 1;
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GLM_STATIC_ASSERT(std::numeric_limits<genUType>::is_integer && !std::numeric_limits<genUType>::is_signed, "'usubBorrow' only accept unsigned integer inputs");
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Borrow = x >= y ? static_cast<genUType>(0) : static_cast<genUType>(1);
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if(x > y)
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return genUType(detail::highp_int_t(x) - detail::highp_int_t(y));
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return static_cast<genUType>(static_cast<int64>(x) -static_cast<int64>(y));
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else
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return genUType((detail::highp_int_t(1) << detail::highp_int_t(32)) + detail::highp_int_t(x) - detail::highp_int_t(y));
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return static_cast<genUType>((static_cast<int64>(1) << static_cast<int64>(32)) + static_cast<int64>(x) - static_cast<int64>(y));
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}
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template <typename T, precision P>
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@ -122,6 +132,8 @@ namespace glm
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detail::tvec2<T, P> & Borrow
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)
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{
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GLM_STATIC_ASSERT(std::numeric_limits<T>::is_integer && !std::numeric_limits<T>::is_signed, "'usubBorrow' only accept unsigned integer inputs");
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return detail::tvec2<T, P>(
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usubBorrow(x[0], y[0], Borrow[0]),
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usubBorrow(x[1], y[1], Borrow[1]));
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@ -135,6 +147,8 @@ namespace glm
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detail::tvec3<T, P> & Borrow
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)
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{
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GLM_STATIC_ASSERT(std::numeric_limits<T>::is_integer && !std::numeric_limits<T>::is_signed, "'usubBorrow' only accept unsigned integer inputs");
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return detail::tvec3<T, P>(
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usubBorrow(x[0], y[0], Borrow[0]),
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usubBorrow(x[1], y[1], Borrow[1]),
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@ -149,6 +163,8 @@ namespace glm
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detail::tvec4<T, P> & Borrow
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)
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{
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GLM_STATIC_ASSERT(std::numeric_limits<T>::is_integer && !std::numeric_limits<T>::is_signed, "'usubBorrow' only accept unsigned integer inputs");
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return detail::tvec4<T, P>(
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usubBorrow(x[0], y[0], Borrow[0]),
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usubBorrow(x[1], y[1], Borrow[1]),
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@ -157,127 +173,121 @@ namespace glm
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}
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// umulExtended
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template <typename genUType>
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template <>
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GLM_FUNC_QUALIFIER void umulExtended
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(
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genUType const & x,
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genUType const & y,
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genUType & msb,
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genUType & lsb
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uint const & x,
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uint const & y,
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uint & msb,
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uint & lsb
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)
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{
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detail::highp_uint_t ValueX64 = x;
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detail::highp_uint_t ValueY64 = y;
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detail::highp_uint_t Value64 = ValueX64 * ValueY64;
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msb = *(genUType*)&genUType(Value64 & ((detail::highp_uint_t(1) << detail::highp_uint_t(32)) - detail::highp_uint_t(1)));
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lsb = *(genUType*)&genUType(Value64 >> detail::highp_uint_t(32));
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GLM_STATIC_ASSERT(sizeof(uint) == sizeof(uint32), "uint and uint32 size mismatch");
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uint64 Value64 = static_cast<uint64>(x) * static_cast<uint64>(y);
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msb = *(reinterpret_cast<uint32*>(&Value64) + 1);
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lsb = reinterpret_cast<uint32&>(Value64);
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}
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template <typename T, precision P>
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GLM_FUNC_QUALIFIER detail::tvec2<T, P> umulExtended
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template <>
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GLM_FUNC_QUALIFIER void umulExtended
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(
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detail::tvec2<T, P> const & x,
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detail::tvec2<T, P> const & y,
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detail::tvec2<T, P> & msb,
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detail::tvec2<T, P> & lsb
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uvec2 const & x,
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uvec2 const & y,
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uvec2 & msb,
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uvec2 & lsb
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)
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{
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return detail::tvec2<T, P>(
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umulExtended(x[0], y[0], msb, lsb),
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umulExtended(x[1], y[1], msb, lsb));
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umulExtended(x[0], y[0], msb[0], lsb[0]);
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umulExtended(x[1], y[1], msb[1], lsb[1]);
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}
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template <typename T, precision P>
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GLM_FUNC_QUALIFIER detail::tvec3<T, P> umulExtended
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template <>
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GLM_FUNC_QUALIFIER void umulExtended
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(
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detail::tvec3<T, P> const & x,
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detail::tvec3<T, P> const & y,
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detail::tvec3<T, P> & msb,
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detail::tvec3<T, P> & lsb
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uvec3 const & x,
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uvec3 const & y,
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uvec3 & msb,
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uvec3 & lsb
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)
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{
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return detail::tvec3<T, P>(
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umulExtended(x[0], y[0], msb, lsb),
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umulExtended(x[1], y[1], msb, lsb),
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umulExtended(x[2], y[2], msb, lsb));
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umulExtended(x[0], y[0], msb[0], lsb[0]);
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umulExtended(x[1], y[1], msb[1], lsb[1]);
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umulExtended(x[2], y[2], msb[2], lsb[2]);
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}
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template <typename T, precision P>
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GLM_FUNC_QUALIFIER detail::tvec4<T, P> umulExtended
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template <>
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GLM_FUNC_QUALIFIER void umulExtended
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(
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detail::tvec4<T, P> const & x,
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detail::tvec4<T, P> const & y,
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detail::tvec4<T, P> & msb,
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detail::tvec4<T, P> & lsb
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uvec4 const & x,
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uvec4 const & y,
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uvec4 & msb,
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uvec4 & lsb
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)
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{
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return detail::tvec4<T, P>(
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umulExtended(x[0], y[0], msb, lsb),
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umulExtended(x[1], y[1], msb, lsb),
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umulExtended(x[2], y[2], msb, lsb),
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umulExtended(x[3], y[3], msb, lsb));
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umulExtended(x[0], y[0], msb[0], lsb[0]);
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umulExtended(x[1], y[1], msb[1], lsb[1]);
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umulExtended(x[2], y[2], msb[2], lsb[2]);
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umulExtended(x[3], y[3], msb[3], lsb[3]);
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}
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// imulExtended
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template <typename genIType>
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template <>
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GLM_FUNC_QUALIFIER void imulExtended
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(
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genIType const & x,
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genIType const & y,
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genIType & msb,
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genIType & lsb
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int const & x,
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int const & y,
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int & msb,
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int & lsb
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)
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{
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detail::highp_int_t ValueX64 = x;
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detail::highp_int_t ValueY64 = y;
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detail::highp_int_t Value64 = ValueX64 * ValueY64;
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msb = *(genIType*)&genIType(Value64 & ((detail::highp_uint_t(1) << detail::highp_uint_t(32)) - detail::highp_uint_t(1)));
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lsb = *(genIType*)&genIType(Value64 >> detail::highp_uint_t(32));
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GLM_STATIC_ASSERT(sizeof(int) == sizeof(int32), "int and int32 size mismatch");
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int64 Value64 = static_cast<int64>(x) * static_cast<int64>(y);
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msb = *(reinterpret_cast<int32*>(&Value64) + 1);
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lsb = reinterpret_cast<int32&>(Value64);
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}
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template <typename T, precision P>
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GLM_FUNC_QUALIFIER detail::tvec2<T, P> imulExtended
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template <>
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GLM_FUNC_QUALIFIER void imulExtended
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(
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detail::tvec2<T, P> const & x,
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detail::tvec2<T, P> const & y,
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detail::tvec2<T, P> & msb,
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detail::tvec2<T, P> & lsb
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ivec2 const & x,
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ivec2 const & y,
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ivec2 & msb,
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ivec2 & lsb
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)
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{
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return detail::tvec2<T, P>(
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imulExtended(x[0], y[0], msb, lsb),
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imulExtended(x[1], y[1], msb, lsb));
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imulExtended(x[0], y[0], msb[0], lsb[0]),
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imulExtended(x[1], y[1], msb[1], lsb[1]);
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}
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template <typename T, precision P>
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GLM_FUNC_QUALIFIER detail::tvec3<T, P> imulExtended
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template <>
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GLM_FUNC_QUALIFIER void imulExtended
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(
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detail::tvec3<T, P> const & x,
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detail::tvec3<T, P> const & y,
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detail::tvec3<T, P> & msb,
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detail::tvec3<T, P> & lsb
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ivec3 const & x,
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ivec3 const & y,
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ivec3 & msb,
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ivec3 & lsb
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)
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{
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return detail::tvec3<T, P>(
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imulExtended(x[0], y[0], msb, lsb),
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imulExtended(x[1], y[1], msb, lsb),
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imulExtended(x[2], y[2], msb, lsb));
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imulExtended(x[0], y[0], msb[0], lsb[0]),
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imulExtended(x[1], y[1], msb[1], lsb[1]);
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imulExtended(x[2], y[2], msb[2], lsb[2]);
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}
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template <typename T, precision P>
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GLM_FUNC_QUALIFIER detail::tvec4<T, P> imulExtended
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template <>
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GLM_FUNC_QUALIFIER void imulExtended
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(
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detail::tvec4<T, P> const & x,
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detail::tvec4<T, P> const & y,
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detail::tvec4<T, P> & msb,
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detail::tvec4<T, P> & lsb
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ivec4 const & x,
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ivec4 const & y,
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ivec4 & msb,
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ivec4 & lsb
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)
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{
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return detail::tvec4<T, P>(
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imulExtended(x[0], y[0], msb, lsb),
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imulExtended(x[1], y[1], msb, lsb),
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imulExtended(x[2], y[2], msb, lsb),
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imulExtended(x[3], y[3], msb, lsb));
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imulExtended(x[0], y[0], msb[0], lsb[0]),
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imulExtended(x[1], y[1], msb[1], lsb[1]);
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imulExtended(x[2], y[2], msb[2], lsb[2]);
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imulExtended(x[3], y[3], msb[3], lsb[3]);
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}
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// bitfieldExtract
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@ -67,6 +67,7 @@ GLM 0.9.5.0: 2013-XX-XX
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- Increased unit tests completness
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- Added creating of a quaternion from two vectors
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- Added C++11 initializer lists
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- Fixed umulExtended and imulExtended implementations for vector types (#76)
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================================================================================
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GLM 0.9.4.6: 2013-09-20
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