PDA_DERF - Error function erf().

Origin

SLATEC / CAMSUN

Implementation Status:

The routine and its subsidiaries will now return an error status as supplied by PDA_XERMSG.

      DOUBLE PRECISION FUNCTION PDA_DERF (X, STATUS)


***BEGIN PROLOGUE  PDA_DERF
***PURPOSE  Compute the error function.
***LIBRARY   SLATEC (FNLIB)
***CATEGORY  C8A, L5A1E
***TYPE      DOUBLE PRECISION (ERF-S, PDA_DERF-D)
***KEYWORDS  ERF, ERROR FUNCTION, FNLIB, SPECIAL FUNCTIONS
***AUTHOR  Fullerton, W., (LANL)
***DESCRIPTION

 PDA_DERF(X) calculates the double precision error function for double
 precision argument X.

 Series for ERF        on the interval  0.          to  1.00000E+00
                                        with weighted error   1.28E-32
                                         log weighted error  31.89
                               significant figures required  31.05
                                    decimal places required  32.55

    STATUS   Returned error status.
             The status must be zero on entry. This
             routine does not check the status on entry.

***REFERENCES  (NONE)
***ROUTINES CALLED  PDA_D1MACH, PDA_DCSEVL, PDA_DERFC, PDA_INITDS
***REVISION HISTORY  (YYMMDD)
   770701  DATE WRITTEN
   890531  Changed all specific intrinsics to generic.  (WRB)
   890531  REVISION DATE from Version 3.2
   891214  Prologue converted to Version 4.0 format.  (BAB)
   900727  Added EXTERNAL statement.  (WRB)
   920618  Removed space from variable name.  (RWC, WRB)
   950425  Implement status.  (HME)
***END PROLOGUE  PDA_DERF