Nintendo Ultra64 Programmer's Manual page 313

VRSQL
31 26 25
COP2
0 1 0 0 1 0
6
Format:
vrsql vd[de], vt[e]
Description:
The 16-bit element
root reciprocal calculation (combined with data previously loaded by vrsqh). The 32-bit square
root reciprocal is calculated and the lower 16-bits are stored in the scalar 16-bit element
vd
register .
Operation:

T:
 DivIn
DivIn
31...0
lshift  0
i  0
while (i < 32 and ~found)
if (DivIn
endif
i  i + 1
endwhile
if (DivIn
31...0
lshift  0
endif
Revision 1.0
Vector Element Scalar SQRT
Reciprocal (Double Prec. Low)
24 21 20 16
1 e vt
1 4 5
e
of vector register
|| VR[vt][e]
31...16
= 1)
i
lshift  0
found  1
32
= 0 ) then
15 11 10
de vd
5 5
vt
is used as the lower 16 bits of a double-precision square
15...0
VRSQL
6 5 0
VRSQL
1 1 0 1 0 1
6
de
of vector
313