Using the terminology of the Wiener-Hopf technique, the Weinstein's diffraction function is defined as the “plus” part G+(s,p) of the Green's functionThis function plays an important role in the solutions of parallel–plate diffracti on problems, roughly equivalent to the Fresnel function in the half-plane diffraction problem. A table of G+(s,p) is given in Weinstein's book,The Theory of Diffraction and the Factorization Method(Golen Press, 1969), and a more extensive five-figure table was later published in Russian by E. I. Nefedov. Both tables are calculated from an approximate version of G+(s,p). In the present paper, we provide a s e t of numerical tables forexactWeinstein's diffraction functions, together with a summary of relevant formulas and a discussion of numerical computations.