IBM PowerPC 604 User Manual page 108

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Table 2·26. Floatlng-Polnt Store Instructions (Continued}
Name Mnemonic Operand Syntax
Store Floating-Point Double with Update Indexed sttdux frS,r B
Store Floating-Point as Integer Word Indexed sttlwx frS,rB
Some floating-point store instructions require conversions in the LSU. Table 2-27 shows
the conversions made by the LSU when performing a Store Floating-Point Single
instruction.
Table 2·27. Store Floatlng-Polnt Slngle Behavior
FPR Precision Data Type Action
Single
Normalized
Store
Single Denonnafized Store
Single
Zero Store
Infinity
QNaN
Single SNaN Store
Dolble Nonnallzed lf(exp S896)
then Denormalize and Store
else
Store
Do Ible Denonnalized Store Zero
Do Ible Zero Store
Infinity
QNaN
Dolble SNaN
Store
2-42
PowerPC 604 RISC Microprocessor User's Manual