BESI0(3)

SYNOPSIS
FUNCTION BESI0 (X)

NAME
besi0 - Compute the hyperbolic Bessel function of the first kind of order zero.

LIBRARY
SLATEC (FNLIB)

CATEGORY
C10B1

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

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

AUTHOR
Fullerton, W., (LANL)

DESCRIPTION
BESI0(X) computes the modified (hyperbolic) Bessel function of the first kind of order zero and real argument X. Series for BI0 on the interval 0. to 9.00000D+00 with weighted error 2.46E-18 log weighted error 17.61 significant figures required 17.90 decimal places required 18.15

REFERENCES
(NONE)

ROUTINES CALLED
BESI0E, CSEVL, INITS, R1MACH, XERMSG

REVISION HISTORY (YYMMDD)
770401 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)
900326 Removed duplicate information from DESCRIPTION section. (WRB)