float_index

A second level index type which takes a integer index type and allows floating point number indexing.
There are two modes that this index can operate in: unscaled and scaled. The latter allows indexing using a normalized value between 0...1 which is very common in DSP applications.

using MyIntegerIndex = index::clamped<512, false>;
using MyFloatIndex = index::scaled;

span data;

MyFloatIndex idx(0.5);

data[0.5] = 90.0f; // data[256] = 90.0f

Class methods

float_index

float_index(FloatType initValue=0)

Creates a float_index with the given value.

getAlpha

FloatType getAlpha(int limit) const

This will return the fractional part of the index. You won't need to use this manually.

operator=

float_index & operator=(FloatType v_)

Assigns a new value to the index.

operator+

float_index operator+(FloatType t) const

Adds the given value to the index.

operator-

float_index operator-(FloatType t) const

Subtracts the index.

operator FloatType

operator FloatType() const

Cast the index to the native float type. You can only do this with a fixed boundary type.