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SUBROUTINE sla_CD2TF (NDP, DAYS, SIGN, IHMSF)
*+
* - - - - - -
* C D 2 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). For example,
* on the VAX, 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 the 32-bit
* integer 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: sla_DD2TF
*
* P.T.Wallace Starlink 12 December 1993
*
* Copyright (C) 1995 Rutherford Appleton Laboratory
*-
IMPLICIT NONE
INTEGER NDP
REAL DAYS
CHARACTER SIGN*(*)
INTEGER IHMSF(4)
* Call double precision version
CALL sla_DD2TF(NDP,DBLE(DAYS),SIGN,IHMSF)
END
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