Return or multiply by powers of 2. More...
#include <RandomLib/RandomPower2.hpp>
Public Types | |
enum | { minpow = -64, maxpow = 64 } |
Static Public Member Functions | |
template<typename RealType > | |
static RealType | pow2 (int n) throw () |
template<typename RealType > | |
static RealType | shiftf (RealType x, int n) throw () |
Static Private Attributes | |
static const float | power2 [maxpow-minpow+1] |
Return or multiply by powers of 2.
With some compilers it's fastest to do a table lookup of powers of 2. If RANDOM_POWERTABLE is 1, a lookup table is used. If RANDOM_POWERTABLE is 0, then std::pow is used.
Definition at line 26 of file RandomPower2.hpp.
anonymous enum |
minpow |
Minimum power in RandomPower2::power2 |
maxpow |
Maximum power in RandomPower2::power2. |
Definition at line 47 of file RandomPower2.hpp.
static RealType RandomLib::RandomPower2::pow2 | ( | int | n | ) | throw () [inline, static] |
Return powers of 2 (either using a lookup table or std::pow)
Definition at line 31 of file RandomPower2.hpp.
static RealType RandomLib::RandomPower2::shiftf | ( | RealType | x, | |
int | n | |||
) | throw () [inline, static] |
Multiply a real by a power of 2
Definition at line 42 of file RandomPower2.hpp.
const float RandomLib::RandomPower2::power2[maxpow-minpow+1] [static, private] |