DBESI0(3)

SYNOPSIS
DOUBLE PRECISION FUNCTION DBESI0 (X)

NAME
dbesi0 - Compute the hyperbolic Bessel function of the first kind of order zero.

LIBRARY
SLATEC (FNLIB)

CATEGORY
C10B1

TYPE
DOUBLE PRECISION (BESI0-S, DBESI0-D)

KEYWORDS
FIRST KIND, FNLIB, HYPERBOLIC BESSEL FUNCTION, MODIFIED BESSEL FUNCTION, ORDER ZERO, SPECIAL FUNCTIONS

AUTHOR
Fullerton, W., (LANL)

DESCRIPTION
DBESI0(X) calculates the double precision modified (hyperbolic) Bessel function of the first kind of order zero and double precision argument X. Series for BI0 on the interval 0. to 9.00000E+00 with weighted error 9.51E-34 log weighted error 33.02 significant figures required 33.31 decimal places required 33.65

REFERENCES
(NONE)

ROUTINES CALLED
D1MACH, DBSI0E, DCSEVL, INITDS, XERMSG

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)
900315 CALLs to XERROR changed to CALLs to XERMSG. (THJ)