daie.f
DOUBLE PRECISION FUNCTION DAIE (X)
C***BEGIN PROLOGUE DAIE
C***PURPOSE Calculate the Airy function for a negative argument and an
C exponentially scaled Airy function for a non-negative
C argument.
C***LIBRARY SLATEC (FNLIB)
C***CATEGORY C10D
C***TYPE DOUBLE PRECISION (AIE-S, DAIE-D)
C***KEYWORDS EXPONENTIALLY SCALED AIRY FUNCTION, FNLIB,
C SPECIAL FUNCTIONS
C***AUTHOR Fullerton, W., (LANL)
C***DESCRIPTION
C
C DAIE(X) calculates the Airy function or the exponentially scaled
C Airy function depending on the value of the argument. The function
C and argument are both double precision.
C
C Evaluate AI(X) for X .LE. 0.0 and AI(X)*EXP(ZETA) where
C ZETA = 2/3 * X**(3/2) for X .GE. 0.0
C
C Series for AIF on the interval -1.00000E+00 to 1.00000E+00
C with weighted error 8.37E-33
C log weighted error 32.08
C significant figures required 30.87
C decimal places required 32.63
C
C Series for AIG on the interval -1.00000E+00 to 1.00000E+00
C with weighted error 7.47E-34
C log weighted error 33.13
C significant figures required 31.50
C decimal places required 33.68
C
C Series for AIP1 on the interval 1.25000E-01 to 1.00000E+00
C with weighted error 3.69E-32
C log weighted error 31.43
C significant figures required 29.55
C decimal places required 32.31
C
C Series for AIP2 on the interval 0. to 1.25000E-01
C with weighted error 3.48E-32
C log weighted error 31.46
C significant figures required 28.74
C decimal places required 32.24
C
C***REFERENCES (NONE)
C***ROUTINES CALLED D1MACH, D9AIMP, DCSEVL, INITDS
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 920618 Removed space from variable names. (RWC, WRB)
C***END PROLOGUE DAIE