Fig. 5
From: Unified commutation-pruning technique for efficient computation of composite DFTs
Number of arithmetic operations required to compute the DFTDIF-DIT_Pr, the DFTCOMM−DIF−DIT−Pr, and the DFTCOMM−DIT−DIF−Pr: a for a constant value of L i and different tested values of L o  = {1, 2,…, N} when N = 8192; b for a constant value of L o and different tested values of L i  = {1, 2,…, N} when N = 6561; c for a constant value of L o and different tested values of L i  = {1, 2,…, N} when N = 8192; d for a constant value of L i and different tested values of L o  = {1, 2,…, N} when N = 6561; e zoom of Fig. 5a; and f zoom of Fig. 5c