Sun Microsystems UltraSPARC-I User Manual page 219

raSPARC User's Manual
rs2
rs1
rd
rs2
3
7
rd
Figure 13-4 FPACK32 Operation
.5.3.3 FPACKFIX
FPACKFIX takes two 32-bit fixed values in rs2, scales, truncates and clips them
into two 16-bit signed integers, then stores the result in the 32-bit rd register.
This operation, illustrated in Figure 13-5, is carried out as follows:
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com 1. Left shift each 32-bit value in rs2 by the number of bits in the
63 55 47
2
2
3
3 2
1
39 31 23
GSR.scale_factor
implicit binary pt
15 7
3
0
0110
5
0
0 0 0 0 0 0
7 0