VFRSQRT7.V

Vector Float Reciprocal Sqrt Estimate 7-bit

VFRSQRT7.V vd, vs2, vm

Computes an estimate of 1/sqrt(x). Critical for vector normalization.

Details

Vector Float Reciprocal Sqrt Estimate 7-bit: Computes an estimate of 1/sqrt(x). Critical for vector normalization. Operation: foreach(i < vl): vd[i] = approx_rsqrt(vs2[i]);.

Pseudocode Operation

foreach(i < vl): vd[i] = approx_rsqrt(vs2[i]);

Example

VFRSQRT7.V v1, v4, v0.t

Encoding

Binary Layout
010011
31:26
vm
25
vs2
24:20
00100
19:15
001
14:12
vd
11:7
1010111
6:0
 
Format OPFVV
Opcode 0x57
Extension V

Operands

  • vd
    Destination vector register
  • vs2
    Source