fli.s

No synopsis available.

This instruction is defined by:

Zfa, version >= Zfa@1.0.0

This instruction is included in the following profiles:

RVA23U64 (Mandatory)
RVB23U64 (Mandatory)

Encoding

Assembly format

fli.s fd, fs1

Synopsis

This instruction must have data-independent timing when extension Zkt is enabled.

No description available.

Access

M	HS	U	VS	VU
Always	Always	Always	Always	Always

Always

Decode Variables

Bits<5> fs1 = $encoding[19:15];
Bits<5> fd = $encoding[11:7];

idl

Execution

IDL
Sail

idl

{
  let bits : bits(32) = match constantidx {
    0b00000 => { 0xbf800000 },  /* -1.0 */
    0b00001 => { 0x00800000 },  /* minimum positive normal */
    0b00010 => { 0x37800000 },  /* 1.0 * 2^-16 */
    0b00011 => { 0x38000000 },  /* 1.0 * 2^-15 */
    0b00100 => { 0x3b800000 },  /* 1.0 * 2^-8  */
    0b00101 => { 0x3c000000 },  /* 1.0 * 2^-7  */
    0b00110 => { 0x3d800000 },  /* 1.0 * 2^-4  */
    0b00111 => { 0x3e000000 },  /* 1.0 * 2^-3  */
    0b01000 => { 0x3e800000 },  /* 0.25 */
    0b01001 => { 0x3ea00000 },  /* 0.3125 */
    0b01010 => { 0x3ec00000 },  /* 0.375 */
    0b01011 => { 0x3ee00000 },  /* 0.4375 */
    0b01100 => { 0x3f000000 },  /* 0.5 */
    0b01101 => { 0x3f200000 },  /* 0.625 */
    0b01110 => { 0x3f400000 },  /* 0.75 */
    0b01111 => { 0x3f600000 },  /* 0.875 */
    0b10000 => { 0x3f800000 },  /* 1.0 */
    0b10001 => { 0x3fa00000 },  /* 1.25 */
    0b10010 => { 0x3fc00000 },  /* 1.5 */
    0b10011 => { 0x3fe00000 },  /* 1.75 */
    0b10100 => { 0x40000000 },  /* 2.0 */
    0b10101 => { 0x40200000 },  /* 2.5 */
    0b10110 => { 0x40400000 },  /* 3 */
    0b10111 => { 0x40800000 },  /* 4 */
    0b11000 => { 0x41000000 },  /* 8 */
    0b11001 => { 0x41800000 },  /* 16 */
    0b11010 => { 0x43000000 },  /* 2^7 */
    0b11011 => { 0x43800000 },  /* 2^8 */
    0b11100 => { 0x47000000 },  /* 2^15 */
    0b11101 => { 0x47800000 },  /* 2^16 */
    0b11110 => { 0x7f800000 },  /* +inf */
    0b11111 => { canonical_NaN_S() },
  };
  F_S(rd) = bits;
  RETIRE_SUCCESS
}

sail