fsub.d Floating-Point Subtract Double-Precision This instruction is defined by: Encoding Synopsis The fsub.d instruction is analogous to fsub.s and performs double-precision floating-point subtraction between fs1 and fs2 and writes the final result to fd. Access M HS U VS VU Always Always Always Always Always Decode Variables Bits<5> fs2 = $encoding[24:20]; Bits<5> fs1 = $encoding[19:15]; Bits<3> rm = $encoding[14:12]; Bits<5> fd = $encoding[11:7]; Execution Pruned, XLEN == 64 Original