dsri

Decimal Shift Coefficient Right Immediate

dsri FRT, FRA, SH

Shifts the coefficient of a DFP number right.

Encoding

Binary Layout

59

0:5

FRT

6:10

FRA

11:15

SH

16:20

98

21:30

Rc

31

 

Format Z23-form

Opcode 0xEC0000C4

Extension Decimal Floating-Point

Operands

• FRT
  Target
• FRA
  Source
• SH
  Shift Amount

Example

dsri f1, f2, 3

Registers Altered

FPSCR

Related

More in Decimal Floating-Point

Reference

View in PowerISA v3.1C Specification ↗ OPF Power ISA v3.1C

Description

Shifts the coefficient of a 64-bit Decimal Floating-Point number right by an immediate amount (0-63 places), with zeros shifted in from the left. The exponent remains unchanged. This instruction is part of the Decimal Floating-Point extension and does not affect condition registers unless Rc=1.

Operation

coefficient ← coefficient >> SH
FRT ← DFP_construct(sign, exponent, coefficient)