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/**
* @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 };
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 };
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;
}
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