histograms::equi_height Namespace Reference

Classes
class	Bucket
	Equi-height bucket. More...

Functions
template<class T >
static bool	values_are_equal (const T &val1, const T &val2)
static std::uint64_t	uchar_array_to_64bit_unsigned (const uchar *ptr, size_t len)
	Convert an array of uchar values into an 64bit unsigned integer. More...

Function Documentation

uchar_array_to_64bit_unsigned()

static std::uint64_t histograms::equi_height::uchar_array_to_64bit_unsigned ( const uchar *  ptr, size_t  len  )

static

Convert an array of uchar values into an 64bit unsigned integer.

It simply does an bitwise concatenation of the eight first values of the array into a single integer. It will do something like this, given an array of five uchar values {62, 28, 62, 28, 51}:

result: 0000000000000000000000000000000000000000000000000000000000000000 first byte: 00111110 (byte value 62) second byte: | 00011100 (byte value 28) third byte: | | 00111110 (byte value 62) fourth byte: | | | 00011100 (byte value 28) fifth byte: | | | | 00111101 (byte value 51) | | | | | result: 0011111000011100001111100001110000111101000000000000000000000000

Parameters

ptr	The input value to convert.
len	The length of the input array.

Returns

The converted value.

values_are_equal()

template<class T >

static bool histograms::equi_height::values_are_equal ( const T &  val1, const T &  val2  )

static