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/**
* @file llsimdtypes.inl
* @brief Inlined definitions of basic SIMD math related types
*
* $LicenseInfo:firstyear=2010&license=viewergpl$
*
* Copyright (c) 2007-2010, Linden Research, Inc.
*
* Second Life Viewer Source Code
* The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0
* ("GPL"), unless you have obtained a separate licensing agreement
* ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
*
* There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or
* online at
* http://secondlifegrid.net/programs/open_source/licensing/flossexception
*
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
*
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE.
* $/LicenseInfo$
*/
//////////////////
// 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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