36     RK = NumberOfRegisters>=16 ? 4 : 2, // register blocking  in sparselu_gemm()  enumerator
40 …Index d_end = (d/RK)*RK;    // number of columns of A (rows of B) suitable for full register block…  in sparselu_gemm()
70       for(Index k=0; k<d_end; k+=RK)  in sparselu_gemm()
77         if(RK==4) b20 = pset1<Packet>(Bc0[2]);  in sparselu_gemm()
78         if(RK==4) b30 = pset1<Packet>(Bc0[3]);  in sparselu_gemm()
81         if(RK==4) b21 = pset1<Packet>(Bc1[2]);  in sparselu_gemm()
82         if(RK==4) b31 = pset1<Packet>(Bc1[3]);  in sparselu_gemm()
96         if(RK==4)  in sparselu_gemm()
117           if(RK==4) KMADD(c0, a2, b20, t0)       \  in sparselu_gemm()
118           if(RK==4) KMADD(c1, a2, b21, t1)       \  in sparselu_gemm()
119           if(RK==4) a2 = pload<Packet>(A2+i+(I+1)*PacketSize); \  in sparselu_gemm()
120           if(RK==4) KMADD(c0, a3, b30, t0)       \  in sparselu_gemm()
121           if(RK==4) KMADD(c1, a3, b31, t1)       \  in sparselu_gemm()
122           if(RK==4) a3 = pload<Packet>(A3+i+(I+1)*PacketSize); \  in sparselu_gemm()
132           if(RK==4) prefetch((A2+i+(5)*PacketSize));  in sparselu_gemm()
133           if(RK==4) prefetch((A3+i+(5)*PacketSize));  in sparselu_gemm()
152           if(RK==4)  in sparselu_gemm()
164         Bc0 += RK;  in sparselu_gemm()
165         Bc1 += RK;  in sparselu_gemm()
173       for(Index k=0; k<d_end; k+=RK)  in sparselu_gemm()
180         if(RK==4) b20 = pset1<Packet>(Bc0[2]);  in sparselu_gemm()
181         if(RK==4) b30 = pset1<Packet>(Bc0[3]);  in sparselu_gemm()
194         if(RK==4)  in sparselu_gemm()
211         if(RK==4) KMADD(c0, a2, b20, t0)       \  in sparselu_gemm()
212         if(RK==4) a2 = pload<Packet>(A2+i+(I+1)*PacketSize); \  in sparselu_gemm()
213         if(RK==4) KMADD(c0, a3, b30, t0)       \  in sparselu_gemm()
214         if(RK==4) a3 = pload<Packet>(A3+i+(I+1)*PacketSize); \  in sparselu_gemm()
238           if(RK==4)   in sparselu_gemm()
244         Bc0 += RK;  in sparselu_gemm()