x86 Assembly Language Reference Manual

Basic Arithmetic Instructions (Floating-Point)

The basic arithmetic instructions perform basic arithmetic operations on floating-point and integer operands.

Table 3–14 Basic Arithmetic Instructions (Floating-Point)


Solaris Mnemonic	Intel/AMD Mnemonic	Description
`fabs`	`FABS`	absolute value
`fadd`	`FADD`	add floating-point
`faddp`	`FADDP`	add floating-point and pop
`fchs`	`FCHS`	change sign
`fdiv`	`FDIV`	divide floating-point
`fdivp`	`FDIVP`	divide floating-point and pop
`fdivr`	`FDIVR`	divide floating-point reverse
`fdivrp`	`FDIVRP`	divide floating-point reverse and pop
`fiadd`	`FIADD`	add integer
`fidiv`	`FIDIV`	divide integer
`fidivr`	`FIDIVR`	divide integer reverse
`fimul`	`FIMUL`	multiply integer
`fisub`	`FISUB`	subtract integer
`fisubr`	`FISUBR`	subtract integer reverse
`fmul`	`FMUL`	multiply floating-point
`fmulp`	`FMULP`	multiply floating-point and pop
`fprem`	`FPREM`	partial remainder
`fprem1`	`FPREM1`	IEEE partial remainder
`frndint`	`FRNDINT`	round to integer
`fscale`	`FSCALE`	scale by power of two
`fsqrt`	`FSQRT`	square root
`fsub`	`FSUB`	subtract floating-point
`fsubp`	`FSUBP`	subtract floating-point and pop
`fsubr`	`FSUBR`	subtract floating-point reverse
`fsubrp`	`FSUBRP`	subtract floating-point reverse and pop
`fxtract`	`FXTRACT`	extract exponent and significand