log

Classes
struct	etl::log< NV, BASE >
struct	etl::log2< NV >
struct	etl::log10< NV >

Detailed Description

log<N, BASE> : Calculates logs to any base, rounded down to the nearest integer.
log2<N> : Calculates logs to base 2, rounded down to the nearest integer.
log10<N> : Calculates logs to base 10, rounded down to the nearest integer.

---

Class Documentation

etl::log

struct etl::log

template<size_t NV, size_t BASE>
struct etl::log< NV, BASE >

The base generic log template. Defines value as the log of the number at the specified base. The result is rounded down to the next integer.

Template Parameters

NV	The number to find the log of.
BASE	The base of the log.

Public Types
enum	value_type { value = (NV >= BASE) ? 1 + log<NV / BASE, BASE>::value : 0 }

etl::log2

struct etl::log2

template<size_t NV>
struct etl::log2< NV >

Calculates base 2 logs.

Public Types
enum	value_type { value = log<NV, 2>::value }

etl::log10

struct etl::log10

template<size_t NV>
struct etl::log10< NV >

Calculates base 10 logs.

Public Types
enum	value_type { value = log<NV, 10>::value }