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