fnmsub.d

Floating-Point Negate-Multiply-Subtract Double-Precision

The fnmsub.d instruction multiplies the values in fs1 and fs2, negates the product, adds the value in fs3, and writes the final result to fd.

Assembly format

fnmsub.d fd, fs1, fs2, fs3, rm

Decode Variables

Bits<5> fs3 = $encoding[31:27];
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