Fujitsu FR81 7.79 FMSUBs (Single Precision Floating Point Multiply and Subtract)

CM71-00105-1E FUJITSU MICROELECTRONICS LIMITED 253
FR81 Family CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS
7.79
7.79 FMSUBs (Single Precision Floating Point Multiply and
Subtract)
FRk is multiplied by FRj, and its result is subtracted by FRi and then stored in FRi.
●Assembler Format
FMSUBs FRk, FRj, FRi
●Operation
FRk × FRj - FRi → FRi
●Classification
Single-precision floating point instruction, FR81 family
●Execution Cycles
4 cycles
●Instruction Format
●EIT Occurrence and Detection
An invalid instruction exception (FPU absence error), an FPU exception, or an interrupt is detected.
MSB LSB
(n+0)0000011110100110
(n+2) - FRk FRj FRi