sign/ffsampling/ffldl library

Functions

ffldlFft(List<List<List<Complex>>> g) → FfTree

Build the ffLDL decomposition tree of the Gram matrix g (FFT representation). Corresponds to algorithm 9 (ffLDL).

gram(List<List<List<num>>> b) → List<List<List<num>>>

Gram matrix G = B * B^* of the 2x2 basis b (coefficient representation).