160 lines
3.8 KiB
C++
160 lines
3.8 KiB
C++
/**
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* @file llsimdtypes.inl
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* @brief Inlined definitions of basic SIMD math related types
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*
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* $LicenseInfo:firstyear=2010&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2010, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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* $/LicenseInfo$
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*/
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//////////////////
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// LLSimdScalar
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//////////////////
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inline LLSimdScalar operator+(const LLSimdScalar& a, const LLSimdScalar& b)
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{
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LLSimdScalar t(a);
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t += b;
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return t;
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}
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inline LLSimdScalar operator-(const LLSimdScalar& a, const LLSimdScalar& b)
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{
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LLSimdScalar t(a);
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t -= b;
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return t;
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}
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inline LLSimdScalar operator*(const LLSimdScalar& a, const LLSimdScalar& b)
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{
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LLSimdScalar t(a);
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t *= b;
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return t;
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}
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inline LLSimdScalar operator/(const LLSimdScalar& a, const LLSimdScalar& b)
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{
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LLSimdScalar t(a);
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t /= b;
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return t;
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}
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inline LLSimdScalar operator-(const LLSimdScalar& a)
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{
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static LL_ALIGN_16(const U32 signMask[4]) = {0x80000000, 0x80000000, 0x80000000, 0x80000000 };
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ll_assert_aligned(signMask,16);
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return _mm_xor_ps(*reinterpret_cast<const LLQuad*>(signMask), a);
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}
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inline LLBool32 operator==(const LLSimdScalar& a, const LLSimdScalar& b)
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{
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return _mm_comieq_ss(a, b);
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}
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inline LLBool32 operator!=(const LLSimdScalar& a, const LLSimdScalar& b)
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{
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return _mm_comineq_ss(a, b);
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}
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inline LLBool32 operator<(const LLSimdScalar& a, const LLSimdScalar& b)
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{
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return _mm_comilt_ss(a, b);
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}
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inline LLBool32 operator<=(const LLSimdScalar& a, const LLSimdScalar& b)
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{
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return _mm_comile_ss(a, b);
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}
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inline LLBool32 operator>(const LLSimdScalar& a, const LLSimdScalar& b)
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{
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return _mm_comigt_ss(a, b);
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}
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inline LLBool32 operator>=(const LLSimdScalar& a, const LLSimdScalar& b)
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{
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return _mm_comige_ss(a, b);
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}
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inline LLBool32 LLSimdScalar::isApproximatelyEqual(const LLSimdScalar& rhs, F32 tolerance /* = F_APPROXIMATELY_ZERO */) const
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{
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const LLSimdScalar tol( tolerance );
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const LLSimdScalar diff = _mm_sub_ss( mQ, rhs.mQ );
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const LLSimdScalar absDiff = diff.getAbs();
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return absDiff <= tol;
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}
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inline void LLSimdScalar::setMax( const LLSimdScalar& a, const LLSimdScalar& b )
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{
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mQ = _mm_max_ss( a, b );
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}
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inline void LLSimdScalar::setMin( const LLSimdScalar& a, const LLSimdScalar& b )
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{
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mQ = _mm_min_ss( a, b );
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}
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inline LLSimdScalar& LLSimdScalar::operator=(F32 rhs)
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{
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mQ = _mm_set_ss(rhs);
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return *this;
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}
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inline LLSimdScalar& LLSimdScalar::operator+=(const LLSimdScalar& rhs)
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{
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mQ = _mm_add_ss( mQ, rhs );
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return *this;
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}
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inline LLSimdScalar& LLSimdScalar::operator-=(const LLSimdScalar& rhs)
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{
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mQ = _mm_sub_ss( mQ, rhs );
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return *this;
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}
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inline LLSimdScalar& LLSimdScalar::operator*=(const LLSimdScalar& rhs)
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{
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mQ = _mm_mul_ss( mQ, rhs );
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return *this;
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}
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inline LLSimdScalar& LLSimdScalar::operator/=(const LLSimdScalar& rhs)
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{
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mQ = _mm_div_ss( mQ, rhs );
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return *this;
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}
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inline LLSimdScalar LLSimdScalar::getAbs() const
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{
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static const LL_ALIGN_16(U32 F_ABS_MASK_4A[4]) = { 0x7FFFFFFF, 0x7FFFFFFF, 0x7FFFFFFF, 0x7FFFFFFF };
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ll_assert_aligned(F_ABS_MASK_4A,16);
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return _mm_and_ps( mQ, *reinterpret_cast<const LLQuad*>(F_ABS_MASK_4A));
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}
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inline F32 LLSimdScalar::getF32() const
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{
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F32 ret;
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_mm_store_ss(&ret, mQ);
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return ret;
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}
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