DCHFIE(3)

SYNOPSIS
DOUBLE PRECISION FUNCTION DCHFIE (X1, X2, F1, F2, D1, D2, A, B)

NAME
dchfie - Evaluates integral of a single cubic for DPCHIA

LIBRARY
SLATEC (PCHIP)

TYPE
DOUBLE PRECISION (CHFIE-S, DCHFIE-D)

AUTHOR
Fritsch, F. N., (LLNL)

DESCRIPTION
DCHFIE: Cubic Hermite Function Integral Evaluator. Called by DPCHIA to evaluate the integral of a single cubic (in Hermite form) over an arbitrary interval (A,B). ---------------------------------------------------------------------- Calling sequence: DOUBLE PRECISION X1, X2, F1, F2, D1, D2, A, B DOUBLE PRECISION VALUE, DCHFIE VALUE = DCHFIE (X1, X2, F1, F2, D1, D2, A, B) Parameters: VALUE -- (output) value of the requested integral. X1,X2 -- (input) endpoints if interval of definition of cubic. F1,F2 -- (input) function values at the ends of the interval. D1,D2 -- (input) derivative values at the ends of the interval. A,B -- (input) endpoints of interval of integration.

SEE ALSO
DPCHIA

ROUTINES CALLED
(NONE)

REVISION HISTORY (YYMMDD)
820730 DATE WRITTEN
820805 Converted to SLATEC library version.
870707 Corrected subroutine name from DCHIV to DCHFIV.
870813 Minor cosmetic changes.
890411 1. Added SAVE statements (Vers. 3.2). 2. Added SIX to DOUBLE PRECISION declaration.
890411 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)
900328 Added TYPE section. (WRB)
910408 Updated AUTHOR section in prologue. (WRB)
930503 Corrected to set VALUE=0 when IERR.ne.0. (FNF)
930504 Eliminated IERR and changed name DCHFIV to DCHFIE. (FNF)