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M32R-FPU Software Manual (Rev.1.01)
INSTRUCTIONS
3.2 Instruction description
FDIVFDIV
[Mnemonic]
FDIV Rdest,Rsrc1,Rsrc2
[Function]
Floating-point divide
Rdest = Rsrc1 / Rsrc2 ;
[Description]
Divide the floating-point single precision value stored in Rsrc1 by the floating-point single pre-
cision value stored in Rsrc1 and store the result in Rdest. The result is rounded according to the
RM field of FPSR. The DN bit of FPSR handles the modification of denormalized numbers. The
condition bit (C) remains unchanged.
[EIT occurrence]
Floating-Point Exceptions (FPE)
• Unimplemented Operation Exception (UIPL)
• Invalid Operation Exception (IVLD)
• Overflow (OVF)
• Underflow (UDF)
• Inexact Exception (IXCT)
• Zero Divide Exception (DIV0)
[Encoding]
floating-point Instructions
Floating-point divide
[M32R-FPU Extended Instruction]
src11101 src20000 dest0010 00000000
FDIV Rdest,Rsrc1,Rsrc2