/usr/include/vmmlib/math.hpp is in libvmmlib-dev 1.0-2.
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 | #ifndef __VMML__MATH__HPP__
#define __VMML__MATH__HPP__
#include <cmath>
namespace vmml
{
namespace math
{
// helpers for certain cmath functions
template< class T >
inline T squared( const T a )
{
return ( a == 0.0 ) ? 0.0 : a * a;
}
/*
* Computes (a2 + b2)1/2 without destructive underflow or overflow.
*/
template< class T >
inline T pythag( T a, T b )
{
a = fabs(a);
b = fabs(b);
if ( a > b )
return a * sqrt( 1.0 + squared( b / a ) );
else
return ( b == 0.0 ) ? 0.0 : b * sqrt( 1.0 + squared( a / b ) );
}
template< class T >
inline T sign( T a, T b )
{
return ( b >= 0.0 ) ? fabs( a ) : -fabs( a );
}
template< typename T >
struct abs_less
{
T operator()( const T& a, const T& b )
{
return fabs(a) < fabs( b );
}
};
template< typename T >
struct abs_greater
{
T operator()( const T& a, const T& b )
{
return fabs(a) > fabs( b );
}
};
} // namespace math
} // namespace vmml
#endif
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