Renesas M32R-FPU Manual Do Utilizador

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M32R-FPU Software Manual (Rev.1.01)
INSTRUCTIONS
3.2 Instruction description
UTOF
UTOF
Floating Point Instructions
Unsigned integer to float
[M32R-FPU Extended Instruction]
[Mnemonic]
UTOF  Rdest,Rsrc
[Function]
Convert from unsigned integer to floating-point single precision value.
Rdest =  ( float ) ( unsigned int ) Rsrc ;
[Description]
UTOF converts the 32-bit unsigned integer stored in Rsrc to a floating-point single precision
value, and the result is stored in Rdest. The result is rounded according to the RM field in FPSR.
The condition bit (C) remains unchanged.
H’0000 0000 is treated as “+0” regardless of the Rounding Mode.
[EIT occurrence]
Floating-Point Exceptions (FPE)
• Inexact Exception (IXCT)
[Encoding]
src
1101
0000
0000
dest
0100
0000
0100
UTOF  Rdest,Rsrc