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602 lines
14 KiB
C++
Executable file
602 lines
14 KiB
C++
Executable file
///////////////////////////////////////////////////////////////////////////////////
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/// OpenGL Mathematics (glm.g-truc.net)
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///
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/// Copyright (c) 2005 - 2012 G-Truc Creation (www.g-truc.net)
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/// Permission is hereby granted, free of charge, to any person obtaining a copy
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/// of this software and associated documentation files (the "Software"), to deal
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/// in the Software without restriction, including without limitation the rights
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/// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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/// copies of the Software, and to permit persons to whom the Software is
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/// furnished to do so, subject to the following conditions:
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///
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/// The above copyright notice and this permission notice shall be included in
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/// all copies or substantial portions of the Software.
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///
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/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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/// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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/// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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/// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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/// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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/// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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/// THE SOFTWARE.
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///
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/// @ref core
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/// @file glm/core/func_integer.inl
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/// @date 2010-03-17 / 2011-06-15
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/// @author Christophe Riccio
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///////////////////////////////////////////////////////////////////////////////////
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#include "_vectorize.hpp"
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#if(GLM_COMPILER & GLM_COMPILER_VC)
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#include <intrin.h>
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#pragma intrinsic(_BitScanReverse)
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#endif
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namespace glm
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{
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// uaddCarry
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template <typename genUType>
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GLM_FUNC_QUALIFIER genUType uaddCarry
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(
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genUType const & x,
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genUType const & y,
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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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return Result;
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}
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template <typename T>
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GLM_FUNC_QUALIFIER detail::tvec2<T> uaddCarry
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(
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detail::tvec2<T> const & x,
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detail::tvec2<T> const & y,
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detail::tvec2<T> & Carry
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)
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{
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return detail::tvec2<T>(
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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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}
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template <typename T>
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GLM_FUNC_QUALIFIER detail::tvec3<T> uaddCarry
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(
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detail::tvec3<T> const & x,
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detail::tvec3<T> const & y,
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detail::tvec3<T> & Carry
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)
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{
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return detail::tvec3<T>(
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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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uaddCarry(x[2], y[2], Carry[2]));
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}
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template <typename T>
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GLM_FUNC_QUALIFIER detail::tvec4<T> uaddCarry
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(
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detail::tvec4<T> const & x,
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detail::tvec4<T> const & y,
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detail::tvec4<T> & Carry
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)
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{
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return detail::tvec4<T>(
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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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uaddCarry(x[2], y[2], Carry[2]),
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uaddCarry(x[3], y[3], Carry[3]));
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}
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// usubBorrow
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template <typename genUType>
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GLM_FUNC_QUALIFIER genUType usubBorrow
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(
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genUType const & x,
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genUType const & y,
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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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if(x > y)
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return genUType(detail::highp_int_t(x) - detail::highp_int_t(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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}
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template <typename T>
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GLM_FUNC_QUALIFIER detail::tvec2<T> usubBorrow
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(
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detail::tvec2<T> const & x,
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detail::tvec2<T> const & y,
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detail::tvec2<T> & Borrow
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)
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{
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return detail::tvec2<T>(
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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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}
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template <typename T>
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GLM_FUNC_QUALIFIER detail::tvec3<T> usubBorrow
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(
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detail::tvec3<T> const & x,
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detail::tvec3<T> const & y,
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detail::tvec3<T> & Borrow
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)
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{
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return detail::tvec3<T>(
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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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usubBorrow(x[2], y[2], Borrow[2]));
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}
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template <typename T>
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GLM_FUNC_QUALIFIER detail::tvec4<T> usubBorrow
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(
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detail::tvec4<T> const & x,
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detail::tvec4<T> const & y,
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detail::tvec4<T> & Borrow
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)
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{
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return detail::tvec4<T>(
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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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usubBorrow(x[2], y[2], Borrow[2]),
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usubBorrow(x[3], y[3], Borrow[3]));
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}
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// umulExtended
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template <typename genUType>
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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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)
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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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}
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template <typename T>
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GLM_FUNC_QUALIFIER detail::tvec2<T> umulExtended
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(
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detail::tvec2<T> const & x,
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detail::tvec2<T> const & y,
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detail::tvec2<T> & msb,
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detail::tvec2<T> & lsb
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)
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{
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return detail::tvec2<T>(
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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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}
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template <typename T>
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GLM_FUNC_QUALIFIER detail::tvec3<T> umulExtended
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(
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detail::tvec3<T> const & x,
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detail::tvec3<T> const & y,
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detail::tvec3<T> & msb,
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detail::tvec3<T> & lsb
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)
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{
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return detail::tvec3<T>(
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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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}
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template <typename T>
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GLM_FUNC_QUALIFIER detail::tvec4<T> umulExtended
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(
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detail::tvec4<T> const & x,
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detail::tvec4<T> const & y,
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detail::tvec4<T> & msb,
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detail::tvec4<T> & lsb
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)
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{
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return detail::tvec4<T>(
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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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}
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// imulExtended
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template <typename genIType>
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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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)
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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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}
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template <typename T>
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GLM_FUNC_QUALIFIER detail::tvec2<T> imulExtended
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(
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detail::tvec2<T> const & x,
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detail::tvec2<T> const & y,
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detail::tvec2<T> & msb,
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detail::tvec2<T> & lsb
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)
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{
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return detail::tvec2<T>(
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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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}
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template <typename T>
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GLM_FUNC_QUALIFIER detail::tvec3<T> imulExtended
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(
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detail::tvec3<T> const & x,
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detail::tvec3<T> const & y,
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detail::tvec3<T> & msb,
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detail::tvec3<T> & lsb
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)
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{
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return detail::tvec3<T>(
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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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}
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template <typename T>
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GLM_FUNC_QUALIFIER detail::tvec4<T> imulExtended
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(
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detail::tvec4<T> const & x,
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detail::tvec4<T> const & y,
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detail::tvec4<T> & msb,
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detail::tvec4<T> & lsb
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)
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{
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return detail::tvec4<T>(
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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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}
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// bitfieldExtract
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template <typename genIUType>
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GLM_FUNC_QUALIFIER genIUType bitfieldExtract
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(
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genIUType const & Value,
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int const & Offset,
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int const & Bits
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)
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{
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int GenSize = int(sizeof(genIUType)) << int(3);
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assert(Offset + Bits <= GenSize);
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genIUType ShiftLeft = Bits ? Value << (GenSize - (Bits + Offset)) : genIUType(0);
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genIUType ShiftBack = ShiftLeft >> genIUType(GenSize - Bits);
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return ShiftBack;
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}
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template <typename T>
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GLM_FUNC_QUALIFIER detail::tvec2<T> bitfieldExtract
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(
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detail::tvec2<T> const & Value,
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int const & Offset,
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int const & Bits
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)
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{
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return detail::tvec2<T>(
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bitfieldExtract(Value[0], Offset, Bits),
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bitfieldExtract(Value[1], Offset, Bits));
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}
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template <typename T>
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GLM_FUNC_QUALIFIER detail::tvec3<T> bitfieldExtract
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(
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detail::tvec3<T> const & Value,
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int const & Offset,
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int const & Bits
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)
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{
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return detail::tvec3<T>(
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bitfieldExtract(Value[0], Offset, Bits),
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bitfieldExtract(Value[1], Offset, Bits),
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bitfieldExtract(Value[2], Offset, Bits));
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}
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template <typename T>
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GLM_FUNC_QUALIFIER detail::tvec4<T> bitfieldExtract
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(
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detail::tvec4<T> const & Value,
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int const & Offset,
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int const & Bits
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)
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{
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return detail::tvec4<T>(
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bitfieldExtract(Value[0], Offset, Bits),
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bitfieldExtract(Value[1], Offset, Bits),
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bitfieldExtract(Value[2], Offset, Bits),
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bitfieldExtract(Value[3], Offset, Bits));
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}
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// bitfieldInsert
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template <typename genIUType>
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GLM_FUNC_QUALIFIER genIUType bitfieldInsert
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(
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genIUType const & Base,
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genIUType const & Insert,
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int const & Offset,
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int const & Bits
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)
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{
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GLM_STATIC_ASSERT(std::numeric_limits<genIUType>::is_integer, "'bitfieldInsert' only accept integer values");
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assert(Offset + Bits <= sizeof(genIUType));
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if(Bits == 0)
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return Base;
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genIUType Mask = 0;
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for(int Bit = Offset; Bit < Offset + Bits; ++Bit)
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Mask |= (1 << Bit);
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return (Base & ~Mask) | (Insert & Mask);
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}
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template <typename T>
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GLM_FUNC_QUALIFIER detail::tvec2<T> bitfieldInsert
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(
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detail::tvec2<T> const & Base,
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detail::tvec2<T> const & Insert,
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int const & Offset,
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int const & Bits
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)
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{
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return detail::tvec2<T>(
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bitfieldInsert(Base[0], Insert[0], Offset, Bits),
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bitfieldInsert(Base[1], Insert[1], Offset, Bits));
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}
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template <typename T>
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GLM_FUNC_QUALIFIER detail::tvec3<T> bitfieldInsert
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(
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detail::tvec3<T> const & Base,
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detail::tvec3<T> const & Insert,
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int const & Offset,
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int const & Bits
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)
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{
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return detail::tvec3<T>(
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bitfieldInsert(Base[0], Insert[0], Offset, Bits),
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bitfieldInsert(Base[1], Insert[1], Offset, Bits),
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bitfieldInsert(Base[2], Insert[2], Offset, Bits));
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}
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template <typename T>
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GLM_FUNC_QUALIFIER detail::tvec4<T> bitfieldInsert
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(
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detail::tvec4<T> const & Base,
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detail::tvec4<T> const & Insert,
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int const & Offset,
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int const & Bits
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)
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{
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return detail::tvec4<T>(
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bitfieldInsert(Base[0], Insert[0], Offset, Bits),
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bitfieldInsert(Base[1], Insert[1], Offset, Bits),
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bitfieldInsert(Base[2], Insert[2], Offset, Bits),
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bitfieldInsert(Base[3], Insert[3], Offset, Bits));
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}
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// bitfieldReverse
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template <typename genIUType>
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GLM_FUNC_QUALIFIER genIUType bitfieldReverse(genIUType const & Value)
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{
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GLM_STATIC_ASSERT(std::numeric_limits<genIUType>::is_integer, "'bitfieldReverse' only accept integer values");
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genIUType Out = 0;
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std::size_t BitSize = sizeof(genIUType) * 8;
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for(std::size_t i = 0; i < BitSize; ++i)
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if(Value & (genIUType(1) << i))
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Out |= genIUType(1) << (BitSize - 1 - i);
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return Out;
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}
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VECTORIZE_VEC(bitfieldReverse)
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// bitCount
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template <typename genIUType>
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GLM_FUNC_QUALIFIER int bitCount(genIUType const & Value)
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{
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GLM_STATIC_ASSERT(std::numeric_limits<genIUType>::is_integer, "'bitCount' only accept integer values");
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int Count = 0;
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for(std::size_t i = 0; i < sizeof(genIUType) * std::size_t(8); ++i)
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{
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if(Value & (1 << i))
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++Count;
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}
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return Count;
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}
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template <typename T>
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GLM_FUNC_QUALIFIER detail::tvec2<int> bitCount
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(
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detail::tvec2<T> const & value
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)
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{
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return detail::tvec2<int>(
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bitCount(value[0]),
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bitCount(value[1]));
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}
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template <typename T>
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GLM_FUNC_QUALIFIER detail::tvec3<int> bitCount
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(
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detail::tvec3<T> const & value
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)
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|
{
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return detail::tvec3<int>(
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bitCount(value[0]),
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bitCount(value[1]),
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bitCount(value[2]));
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}
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template <typename T>
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GLM_FUNC_QUALIFIER detail::tvec4<int> bitCount
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(
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detail::tvec4<T> const & value
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)
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{
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return detail::tvec4<int>(
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bitCount(value[0]),
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bitCount(value[1]),
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bitCount(value[2]),
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bitCount(value[3]));
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}
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// findLSB
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template <typename genIUType>
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GLM_FUNC_QUALIFIER int findLSB
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(
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genIUType const & Value
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)
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{
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GLM_STATIC_ASSERT(std::numeric_limits<genIUType>::is_integer, "'findLSB' only accept integer values");
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if(Value == 0)
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return -1;
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genIUType Bit;
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for(Bit = genIUType(0); !(Value & (1 << Bit)); ++Bit){}
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return Bit;
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}
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template <typename T>
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GLM_FUNC_QUALIFIER detail::tvec2<int> findLSB
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(
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detail::tvec2<T> const & value
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)
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|
{
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return detail::tvec2<int>(
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findLSB(value[0]),
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findLSB(value[1]));
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}
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template <typename T>
|
|
GLM_FUNC_QUALIFIER detail::tvec3<int> findLSB
|
|
(
|
|
detail::tvec3<T> const & value
|
|
)
|
|
{
|
|
return detail::tvec3<int>(
|
|
findLSB(value[0]),
|
|
findLSB(value[1]),
|
|
findLSB(value[2]));
|
|
}
|
|
|
|
template <typename T>
|
|
GLM_FUNC_QUALIFIER detail::tvec4<int> findLSB
|
|
(
|
|
detail::tvec4<T> const & value
|
|
)
|
|
{
|
|
return detail::tvec4<int>(
|
|
findLSB(value[0]),
|
|
findLSB(value[1]),
|
|
findLSB(value[2]),
|
|
findLSB(value[3]));
|
|
}
|
|
|
|
// findMSB
|
|
#if((GLM_ARCH != GLM_ARCH_PURE) && (GLM_COMPILER & GLM_COMPILER_VC))
|
|
|
|
template <typename genIUType>
|
|
GLM_FUNC_QUALIFIER int findMSB
|
|
(
|
|
genIUType const & Value
|
|
)
|
|
{
|
|
unsigned long Result(0);
|
|
_BitScanReverse(&Result, Value);
|
|
return int(Result);
|
|
}
|
|
|
|
#elif((GLM_ARCH != GLM_ARCH_PURE) && (GLM_COMPILER & GLM_COMPILER_GCC) && (GLM_COMPILER >= GLM_COMPILER_GCC40))
|
|
|
|
template <typename genIUType>
|
|
GLM_FUNC_QUALIFIER int findMSB
|
|
(
|
|
genIUType const & Value
|
|
)
|
|
{
|
|
return __builtin_clz(Value);
|
|
}
|
|
|
|
#else
|
|
|
|
template <typename genIUType>
|
|
GLM_FUNC_QUALIFIER int findMSB
|
|
(
|
|
genIUType const & Value
|
|
)
|
|
{
|
|
GLM_STATIC_ASSERT(std::numeric_limits<genIUType>::is_integer, "'findMSB' only accept integer values");
|
|
if(Value == 0)
|
|
return -1;
|
|
|
|
genIUType bit = genIUType(-1);
|
|
for(genIUType tmp = Value; tmp; tmp >>= 1, ++bit){}
|
|
return bit;
|
|
}
|
|
#endif//(GLM_COMPILER)
|
|
|
|
template <typename T>
|
|
GLM_FUNC_QUALIFIER detail::tvec2<int> findMSB
|
|
(
|
|
detail::tvec2<T> const & value
|
|
)
|
|
{
|
|
return detail::tvec2<int>(
|
|
findMSB(value[0]),
|
|
findMSB(value[1]));
|
|
}
|
|
|
|
template <typename T>
|
|
GLM_FUNC_QUALIFIER detail::tvec3<int> findMSB
|
|
(
|
|
detail::tvec3<T> const & value
|
|
)
|
|
{
|
|
return detail::tvec3<int>(
|
|
findMSB(value[0]),
|
|
findMSB(value[1]),
|
|
findMSB(value[2]));
|
|
}
|
|
|
|
template <typename T>
|
|
GLM_FUNC_QUALIFIER detail::tvec4<int> findMSB
|
|
(
|
|
detail::tvec4<T> const & value
|
|
)
|
|
{
|
|
return detail::tvec4<int>(
|
|
findMSB(value[0]),
|
|
findMSB(value[1]),
|
|
findMSB(value[2]),
|
|
findMSB(value[3]));
|
|
}
|
|
}//namespace glm
|