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 F2XM1                   Compute 2 to the Xth power -1
 FABS                    Absolute value
 FADD  | FADDP           Add real                | and pop
 FBLD                    Load BCD
 FBSTP                   Store BCD and pop
 FCHS                    Change sign
 FCLEX | FNCLEX          Clear exceptions        | no wait
 FCMOVcc                 FP Conditional Move                            PPro+
 FCOM  | FCOMP | FCOMPP  Compare real            | and pop | pop twice
 FCOMI | FCOMIP          Compare real (set EFLAGS) | and pop            PPro+
 FCOS                    Cosine                                          387+
 FDECSTP                 Decrement FP stack pointer
 FDISI | FNDISI          Disable interrupts      | no wait          8087 only
 FDIV  | FDIVP           Divide real             | and pop
 FDIVR | FDIVRP          Divide real reversed    | and pop
 FENI  | FNENI           Enable interrupts       | no wait          8087 only
 FFREE                   Free register
 FIADD                   Integer add
 FICOM | FICOMP          Integer compare         | and pop
 FIDIV | FIDIVR          Integer divide          | reversed
 FILD                    Load integer
 FIMUL                   Integer multiply
 FINCSTP                 Increment FP stack pointer
 FINIT | FNINIT          Initialize FP unit      | no wait
 FIST  | FISTP           Store integer           | and pop
 FISUB | FISUBR          Integer subtract        | reversed
 FLD                     Load real
 FLDxx                   Load FP constant
 FLDCW                   Load control word
 FLDENV                  Load environment state
 FMUL  | FMULP           Multiply real           | and pop
 FNOP                    No operation
 FPATAN                  Partial arctangent
 FPREM | FPREM1          Partial remainder       | IEEE (387+)
 FPTAN                   Partial tangent
 FRNDINT                 Round to integer
 FRSTOR                  Restore saved state
 FSAVE | FNSAVE          Save FPU State          | no wait
 FSCALE                  Scale by a power of 2
 FSETPM                  Set protected mode                          287 only
 FSIN  | FSINCOS         Sine                    | and cosine            387+
 FSQRT                   Square root
 FST   | FSTP            Store real              | and pop
 FSTCW | FNSTCW          Store control word      | no wait
 FSTENV| FNSTENV         Store FPU environment   | no wait
 FSTSW | FNSTSW          Store status word       | no wait
 FSUB  | FSUBP           Subtract real           | and pop
 FSUBR | FSUBRP          Subtract real reversed  | and pop
 FTST                    Test for zero
 FUCOM | FUCOMP |FUCOMPP Unordered compare real  | and pop | pop twice   387+
 FUCOMI| FUCOMIP         Unordered compare real (set EFLAGS) | and pop  PPro+
 FWAIT                   Wait
 FXAM                    Examine condition flags
 FXCH                    Exchange register contents
 FXTRACT                 Extract exponent and significand
 FYL2X                   Compute Y * log2(x)
 FYL2XP1                 Compute Y * log2(x+1)
 Abbreviations and legends