^ (X(rs1) >> 19) ^ ror64(X(rs1), 61) ^ (X(rs1) >> 8) ^ (X(rs2) << 18) ^ (X(rs2) << 25) ^ (X(rs1) >> index) & 1; Included in Extension Minimum version Lifecycle state Zbs (Single-bit instructions) v1.0 Ratified Zbkb (Bit-manipulation for Cryptography) v1.0 Ratified 29.5.17. cpopw 29.5.18. ctz Synopsis Count trailing zero bits Description A bit is 0, an illegal-instruction
yowls