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+      SUBROUTINE slCDTF (NDP, DAYS, SIGN, IHMSF)
+*+
+*     - - - - - -
+*      C D T F
+*     - - - - - -
+*
+*  Convert an interval in days into hours, minutes, seconds
+*
+*  (single precision)
+*
+*  Given:
+*     NDP       int      number of decimal places of seconds
+*     DAYS      real     interval in days
+*
+*  Returned:
+*     SIGN      char     '+' or '-'
+*     IHMSF     int(4)   hours, minutes, seconds, fraction
+*
+*  Notes:
+*
+*     1)  NDP less than zero is interpreted as zero.
+*
+*     2)  The largest useful value for NDP is determined by the size of
+*         DAYS, the format of REAL floating-point numbers on the target
+*         machine, and the risk of overflowing IHMSF(4).  On some
+*         architectures, for DAYS up to 1.0, the available floating-
+*         point precision corresponds roughly to NDP=3.  This is well
+*         below the ultimate limit of NDP=9 set by the capacity of a
+*         typical 32-bit IHMSF(4).
+*
+*     3)  The absolute value of DAYS may exceed 1.0.  In cases where it
+*         does not, it is up to the caller to test for and handle the
+*         case where DAYS is very nearly 1.0 and rounds up to 24 hours,
+*         by testing for IHMSF(1)=24 and setting IHMSF(1-4) to zero.
+*
+*  Called:  slDDTF
+*
+*  Last revision:   26 December 2004
+*
+*  Copyright P.T.Wallace.  All rights reserved.
+*
+*  License:
+*    This program is free software; you can redistribute it and/or modify
+*    it under the terms of the GNU General Public License as published by
+*    the Free Software Foundation; either version 2 of the License, or
+*    (at your option) any later version.
+*
+*    This program is distributed in the hope that it will be useful,
+*    but WITHOUT ANY WARRANTY; without even the implied warranty of
+*    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*    GNU General Public License for more details.
+*
+*    You should have received a copy of the GNU General Public License
+*    along with this program (see SLA_CONDITIONS); if not, write to the
+*    Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+*    Boston, MA  02110-1301  USA
+*
+*  Copyright (C) 1995 Association of Universities for Research in Astronomy Inc.
+*-
+
+      IMPLICIT NONE
+
+      INTEGER NDP
+      REAL DAYS
+      CHARACTER SIGN*(*)
+      INTEGER IHMSF(4)
+
+
+
+*  Call double precision version
+      CALL slDDTF(NDP,DBLE(DAYS),SIGN,IHMSF)
+
+      END