dgamma.f
DOUBLE PRECISION FUNCTION DGAMMA (X)
C***BEGIN PROLOGUE DGAMMA
C***PURPOSE Compute the complete Gamma function.
C***LIBRARY SLATEC (FNLIB)
C***CATEGORY C7A
C***TYPE DOUBLE PRECISION (GAMMA-S, DGAMMA-D, CGAMMA-C)
C***KEYWORDS COMPLETE GAMMA FUNCTION, FNLIB, SPECIAL FUNCTIONS
C***AUTHOR Fullerton, W., (LANL)
C***DESCRIPTION
C
C DGAMMA(X) calculates the double precision complete Gamma function
C for double precision argument X.
C
C Series for GAM on the interval 0. to 1.00000E+00
C with weighted error 5.79E-32
C log weighted error 31.24
C significant figures required 30.00
C decimal places required 32.05
C
C***REFERENCES (NONE)
C***ROUTINES CALLED D1MACH, D9LGMC, DCSEVL, DGAMLM, INITDS, XERMSG
C***REVISION HISTORY (YYMMDD)
C 770601 DATE WRITTEN
C 890531 Changed all specific intrinsics to generic. (WRB)
C 890911 Removed unnecessary intrinsics. (WRB)
C 890911 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 name. (RWC, WRB)
C***END PROLOGUE DGAMMA