x86 Assembly Language Reference Manual

Comparison Instructions (Floating-Point)

The floating-point comparison instructions operate on floating-point or integer operands.

Table 3–15 Comparison Instructions (Floating-Point)


Solaris Mnemonic	Intel/AMD Mnemonic	Description
`fcom`	`FCOM`	compare floating-point
`fcomi`	`FCOMI`	compare floating-point and set `%eflags`
`fcomip`	`FCOMIP`	compare floating-point, set `%eflags`, and pop
`fcomp`	`FCOMP`	compare floating-point and pop
`fcompp`	`FCOMPP`	compare floating-point and pop twice
`ficom`	`FICOM`	compare integer
`ficomp`	`FICOMP`	compare integer and pop
`ftst`	`FTST`	test floating-point (compare with 0.0)
`fucom`	`FUCOM`	unordered compare floating-point
`fucomi`	`FUCOMI`	unordered compare floating-point and set `%eflags`
`fucomip`	`FUCOMIP`	unordered compare floating-point, set `%eflags`, and pop
`fucomp`	`FUCOMP`	unordered compare floating-point and pop
`fucompp`	`FUCOMPP`	compare floating-point and pop twice
`fxam`	`FXAM`	examine floating-point