derfc.f
DOUBLE PRECISION FUNCTION DERFC (X)
C***BEGIN PROLOGUE DERFC
C***PURPOSE Compute the complementary error function.
C***LIBRARY SLATEC (FNLIB)
C***CATEGORY C8A, L5A1E
C***TYPE DOUBLE PRECISION (ERFC-S, DERFC-D)
C***KEYWORDS COMPLEMENTARY ERROR FUNCTION, ERFC, FNLIB,
C SPECIAL FUNCTIONS
C***AUTHOR Fullerton, W., (LANL)
C***DESCRIPTION
C
C DERFC(X) calculates the double precision complementary error function
C for double precision argument X.
C
C Series for ERF on the interval 0. to 1.00000E+00
C with weighted Error 1.28E-32
C log weighted Error 31.89
C significant figures required 31.05
C decimal places required 32.55
C
C Series for ERC2 on the interval 2.50000E-01 to 1.00000E+00
C with weighted Error 2.67E-32
C log weighted Error 31.57
C significant figures required 30.31
C decimal places required 32.42
C
C Series for ERFC on the interval 0. to 2.50000E-01
C with weighted error 1.53E-31
C log weighted error 30.82
C significant figures required 29.47
C decimal places required 31.70
C
C***REFERENCES (NONE)
C***ROUTINES CALLED D1MACH, DCSEVL, INITDS, XERMSG
C***REVISION HISTORY (YYMMDD)
C 770701 DATE WRITTEN
C 890531 Changed all specific intrinsics to generic. (WRB)
C 890531 REVISION DATE from Version 3.2
C 891214 Prologue converted to Version 4.0 format. (BAB)
C 900315 CALLs to XERROR changed to CALLs to XERMSG. (THJ)
C 920618 Removed space from variable names. (RWC, WRB)
C***END PROLOGUE DERFC