VECTOR FUNCTION OPTIMIZATION OF COMPUTATIONS

I.I. Zavarzin, V.F. Kuryakin, V.V. Lunev, D.M. Obuvalin, V.G. Ryzhikh
VANT. Ser.: Mat. Mod. Fiz. Proc 1997. Вып.4. С. 34-38.

      Using three functions 1/x, ln x, exp x as an example it is shown that Pentium and Pentium Pro type processor´s performance may be increased 2—3 times (as compared to hardware implementation), if a set of argument values is known beforehand. The proposed techniques are acceptable for optimization of these and other functions of a vector argument on any superscalar processor. These techniques do not cause the result accuracy decrease, moreover, the reduction in accuracy requirements is an additional reserve of increasing such function performancy.