fsub.d

Floating-Point Subtract Double-Precision

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.

Assembly format

fsub.d fd, fs1, fs2, rm

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

Encoding

svg

Defining extension

(D ࣷ Zdinx)

Access

M

Always

Containing profiles

  • Mandatory: RVA20S64, RVA20U64, RVA22S64, RVA22U64, RVA23S64, RVA23U64, RVB23S64, RVB23U64

  • Optional: None