Power-Programmierung/CD1.mdf/pascal/library/dos/nrpas/erf.pas

Pascal/Delphi Source File | 1994-04-11 | 163 b | 9 lines

FUNCTION erf(x: real): real;
BEGIN
   IF (x < 0.0) THEN BEGIN
      erf := -gammp(0.5,sqr(x))
   END ELSE BEGIN
      erf := gammp(0.5,sqr(x))
   END
END;