/usr/include/sofa/helper/rmath.h is in libsofa1-dev 1.0~beta4-12.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 | /******************************************************************************
* SOFA, Simulation Open-Framework Architecture, version 1.0 beta 4 *
* (c) 2006-2009 MGH, INRIA, USTL, UJF, CNRS *
* *
* 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; either version 2.1 of the License, or (at *
* your option) any later version. *
* *
* 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. *
*******************************************************************************
* SOFA :: Framework *
* *
* Authors: M. Adam, J. Allard, B. Andre, P-J. Bensoussan, S. Cotin, C. Duriez,*
* H. Delingette, F. Falipou, F. Faure, S. Fonteneau, L. Heigeas, C. Mendoza, *
* M. Nesme, P. Neumann, J-P. de la Plata Alcade, F. Poyer and F. Roy *
* *
* Contact information: contact@sofa-framework.org *
******************************************************************************/
#ifndef SOFA_HELPER_RMATH_H
#define SOFA_HELPER_RMATH_H
#include <sofa/helper/helper.h>
#include <math.h>
namespace sofa
{
namespace helper
{
#ifdef M_PI
#define R_PI M_PI
#else
#define R_PI 3.141592653589793238462
#endif
/*
// Most portable version, but also the slowest
inline int rfloor(double r)
{
return ((int)(r+1000000))-1000000;
}
inline int rnear(double r)
{
return ((int)(r+1000000.5))-1000000;
}
*/
/*
// Does not work on gcc 4.x due to more aggressive optimizations
inline int rfloor(double r)
{
static const double FLOATTOINTCONST=(1.5*(1LL<<(52-16)));
r+=FLOATTOINTCONST;
return ((((int*)&r)[0])>>16);
}
inline int rnear(double r)
{
static const double FLOATTOINTCONST_0_5=(1.5*(1LL<<(52-16)))+0.5;
r+=FLOATTOINTCONST_0_5;
return ((((int*)&r)[0])>>16);
}
*/
// Works on gcc 3.x and 4.x
template<class real>
inline int rfloor(real r)
{
static const double FLOATTOINTCONST=(1.5*(1LL<<(52-16)));
union { double d;
int i;
} temp;
temp.d = r+FLOATTOINTCONST;
return ((temp.i)>>16);
}
template<class real>
inline int rnear(real r)
{
static const double FLOATTOINTCONST_0_5=(1.5*(1LL<<(52-16)))+0.5;
union { double d;
int i;
} temp;
temp.d = r+FLOATTOINTCONST_0_5;
return ((temp.i)>>16);
}
inline int rceil(double r)
{
return -rfloor(-r);
}
template<class real>
inline real rabs(real r)
{
return (r>=0)?r:-r;
}
template<class real>
inline real rmin(real r, real s)
{
return (r<=s)?r:s;
}
template<class real>
inline real rmax(real r, real s)
{
return (r>s)?r:s;
}
template<class T>
inline T rlerp(const T& a, const T& b, float f)
{
return a+(b-a)*f;
}
template<class T>
inline T rsqrt(const T& a)
{
return (T)sqrtf((float)a);
}
inline double rsqrt(const double& a)
{
#if defined(__arm__) || defined(__mips__) || defined(__sh__)
return sqrt((double)a);
#else
return (double)sqrtl((long double)a);
#endif
}
inline long double rsqrt(const long double& a)
{
#if defined(__arm__) || defined(__mips__) || defined(__sh__)
return (long double)sqrt((double)a);
#else
return sqrtl(a);
#endif
}
template<class T>
inline const T SQR(const T& a)
{
return a*a;
}
template<class T>
inline const T SIGN(const T &a, const T &b)
{
return b >= 0 ? (a >= 0 ? a : -a) : (a >= 0 ? -a : a);
}
template<class T>
inline void SWAP(T &a, T &b)
{
T dum=a;
a=b;
b=dum;
}
inline void shft3(double &a, double &b, double &c, const double d)
{
a=b;
b=c;
c=d;
}
template<class T>
inline const T round(const T& x)
{
return (x<0?ceil(x-0.5):floor(x+0.5));
}
//inline void printerror( const char* msg )
//{
// std::cerr<<msg<<std::endl;
// assert(0);
//}
} // namespace helper
} // namespace sofa
#endif
|