FCOM

Purpose: Floating point compare src1 vs src2

Operation: Result data always zero

Flags: Set per compare (greater/less/equal/unordered)

references

Patent US5574942

This project is an independent, unofficial work based on publicly available information and reverse-engineering research, and is not affiliated with, endorsed by, sponsored by, or associated with Intel Corporation or its affiliates. It is provided "as is", without warranty of any kind. The author assumes no responsibility or liability for any use, misuse, damage, data loss, hardware failure, or other consequences arising from its use. Intel, Pentium, Core and related trademarks are the property of their respective owners and are used solely for identification and informational purposes.
  • index page
  • uop description
  • ADC
  • ADD
  • AND
  • BSF
  • BSR
  • BSWAP
  • BTEST
  • DIV
  • FANDNOT
  • FCALCTW
  • FCMOV
  • FCOM
  • FMERGE
  • FMOV
  • FPEXTRACT
  • FPORDATATYPE
  • FPSIGNEXT
  • FREADROM
  • FXORS
  • IDIV
  • IMUL
  • INTEXTRACT
  • LEA
  • LOAD
  • MOVE
  • MOVEFROMCREG
  • MOVETOCREG
  • MUL
  • OR
  • PORTIN
  • PORTOUT
  • RCL
  • RCR
  • RDSEGFLD
  • ROL
  • ROR
  • SAL
  • SAR
  • SBC
  • SHL
  • SHR
  • SIGEVENT
  • STA
  • STRD
  • SUB
  • SUBR
  • TRANSPORTUIP
  • UOP
  • U_JCC
  • U_JMP
  • U_JMP_INDIR
  • WRSEGFLD
  • WUCONCAT
  • WUEXTRBK
  • WUINSERT
  • WUMERGE
  • XOR