Added a simple wavefolder

[tomcombriat]

Clean PR for the wavefolder, in response to #153 .

Will test it a bit more extensively and add an example soon.

[tomcombriat]

Okay, at the cost of readability (have a look if you want ;) ), I gained a factor of 3 on the computation of the next() function. Two optimizations:

• % replaced by a bitwise and (I thought the compiler would have done it, but this version is slightly faster)
• replace the hard division by a precomputation of the inverse. This will slow down the setLimits but accelerate (3x gain) the next() which (hopefully!) is computed more often. Had to use three more bytes for this. Also, this is a bit less precise for high numbers of large folds, because of the loss of precision in computing the inverse. This is minor though (error of 5 at most for a 10 times folded signal on a total range of 450…

Will do an example soon but open to comments in the meantime. Best

[tomcombriat]

Hello! I think it starts to look good! I have added an example, and tested on Arduino and Teensy.

For the last, there is a compilation problem as the compiler does not know with overload to choose between:

• static inline MonoOutput fromNBit(uint8_t bits, int16_t l) and
• static inline MonoOutput fromNBit(uint8_t bits, int32_t l)

A fix for that is coming soon. Best,

[tomcombriat]

Hi! I am merging this as it is quite small and not impacting the main core. Will solve #153