4.10.18 Floating-Point Register to Integer Register Move
Format:
FTOIxFa.rq,Rc.wq!Floating-point Operate format
Operation:
CASE:
FTOIS:
Rc<63:32> ← SEXT(Fav<63>)
Rc<31:0> ← Fav<63:62> Fav <58:29>
FTOIT:
Rc <- Fav
ENDCASE
Exceptions: |
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None |
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Instruction mnemonics: |
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FTOIS | |
FTOIT | |
Qualifiers: |
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None |
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Description:
Data in a
The Fb field must be F31.
The instructions do not interpret bits in the register files; specifically, the instructions do not trap on
FTOIS is exactly equivalent to the sequence:
STS
LDL
FTOIT is exactly equivalent to the sequence:
STT
LDQ
Software Note:
FTOIS and FTOIT are no slower than the corresponding store/load sequence and can be significantly faster.
Instruction Descriptions