Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

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     Select an instruction for more information.
 
     Instruction     Description
 
     FSIN            Calculate sine (387+)
     FCOS            Calculate cosine (387+)
     FSINCOS         Calculate quick sine and cosine (387+)
     FPTAN           Calculate partial tangent
     FPATAN          Calculate partial arctangent
 
     F2XM1           Calculate (2^x)-1
     FYL2X           Calculate y times log base 2 of x
     FYL2XP1         Calculate y times log base 2 of (x+1)
 
     FLDPI           Push pi onto stack
     FLDL2E          Push base-2 log of e onto stack
     FLDL2T          Push base-2 log of 10 onto stack
     FLDLG2          Push base-10 log of 2 onto stack
     FLDLN2          Push natural log of 2 onto stack
                                    -♦-