fmul.s

Floating-Point Multiply Single-Precision

The fmul.s instruction performs the single-precision floating-point multiplication between fs1 and fs2, and writes the result in fd.

Assembly format

fmul.s 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

check_f_ok($encoding);
RoundingMode mode = rm_to_mode(rm, $encoding);
F[fd] = f32_mul(F[fs1], F[fs2], mode);
mark_f_state_dirty();

Exceptions

This instruction may result in the following synchronous exceptions:

  • IllegalInstruction

Encoding

svg

Defining extension

F

Access

M

Always

Containing profiles

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

  • Optional: RVI20U32, RVI20U64