erfc.f
FUNCTION ERFC (X)
C***BEGIN PROLOGUE ERFC
C***PURPOSE Compute the complementary error function.
C***LIBRARY SLATEC (FNLIB)
C***CATEGORY C8A, L5A1E
C***TYPE SINGLE PRECISION (ERFC-S, DERFC-D)
C***KEYWORDS COMPLEMENTARY ERROR FUNCTION, ERFC, FNLIB,
C SPECIAL FUNCTIONS
C***AUTHOR Fullerton, W., (LANL)
C***DESCRIPTION
C
C ERFC(X) calculates the single precision complementary error
C function for single precision argument X.
C
C Series for ERF on the interval 0. to 1.00000D+00
C with weighted error 7.10E-18
C log weighted error 17.15
C significant figures required 16.31
C decimal places required 17.71
C
C Series for ERFC on the interval 0. to 2.50000D-01
C with weighted error 4.81E-17
C log weighted error 16.32
C approx significant figures required 15.0
C
C
C Series for ERC2 on the interval 2.50000D-01 to 1.00000D+00
C with weighted error 5.22E-17
C log weighted error 16.28
C approx significant figures required 15.0
C decimal places required 16.96
C
C***REFERENCES (NONE)
C***ROUTINES CALLED CSEVL, INITS, R1MACH, 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 ERFC