SUBROUTINE ST_LDSP  ( string, outstr, ncout, iret )
C************************************************************************
C* ST_LDSP								*
C*									*
C* This subroutine deletes the leading spaces and tabs in a string.	*
C* The input and output strings may be the same variable.		*
C*									*
C* ST_LDSP  ( STRING, OUTSTR, NCOUT, IRET )				*
C*									*
C* Input parameters:							*
C*	STRING		CHAR*		String				*
C*									*
C* Output parameters:							*
C*	OUTSTR		CHAR*		Output string			*
C*	NCOUT		INTEGER		Number of characters output	*
C*	IRET		INTEGER		Return code			*
C*					  0 = normal return		*
C**									*
C* Log:									*
C* I. Graffman/RDS	 2/84	Use new GEMPAK routines			*
C* M. desJardins/GSFC	11/84	Fixed					*
C* M. desJardins/GSFC	 6/88	Documentation				*
C* L. Sager/NCEP         2/96   Increased size of stbuf                 *
C* D. Kidwell/NCEP      10/96   Ported to Cray                          *
C************************************************************************
C* GEMPRM.PRM
C*
C* This include file contains parameter definitions for the GEMPAK
C* software routines in the ST_ and PR_ libraries.
C*
C* CRAY version
C**
C* Log:  
C*	Kidwell/NCEP	07/96	Adapted a subset of gemprm.prm for Cray
C************************************************************************
C!
C!	Missing data definitions
C!
 	PARAMETER	( RMISSD = -9999.0 )
C!						Missing data value
	PARAMETER	( RDIFFD =  0.1    )
C!						Missing value fuzziness
	PARAMETER	( IMISSD = -9999   )
C!						Missing integer value
	LOGICAL		  ERMISS
C!						Declare for stmt func
C!
C! 	Physical and mathematical constants
C!
	PARAMETER       ( PI = 3.14159265  )
C!                                              PI
	PARAMETER       ( DTR = PI / 180.  )
	PARAMETER       ( RTD = 180. / PI  )
C!                                              Degrees <--> Radians
	PARAMETER	( GRAVTY = 9.80616  )
C!						Acceleration of gravity
	PARAMETER	( RDGAS  = 287.04   )
	PARAMETER	( RKAP   = RDGAS / GRAVTY )
C!						Gas constant of dry air
	PARAMETER	( RKAPPA = 2. / 7. )
C!						Poisson constant
	PARAMETER	( GAMUSD = 6.5 )
C!						US std atmos lapse rate
	PARAMETER	( TMCK   = 273.15 )
C!						Centigrade -> Kelvin
C!
C!	ASCII character constants 
C!
C!	Since the Cray does not allow the use of a function (e.g.,
C!	CHAR) to define a parameter, nor does it allow a character
C!	to be defined directly as a hex (X) value, the convolutions
C!      below are necessary to define the character values for Cray.
C!
C
	CHARACTER * 1 chnull, chtab, chspac, chtlda
C
	CHARACTER * 8 c8null, c8tab, c8spac, c8tlda
C
	INTEGER       iigemc ( 4 )
C
	EQUIVALENCE ( chnull, c8null (8:8) ), ( chtab , c8tab  (8:8) ),
     +              ( chspac, c8spac (8:8) ), ( chtlda, c8tlda (8:8) ) 
C
	EQUIVALENCE ( iigemc ( 1), c8null ), ( iigemc ( 2), c8tab  ),
     +              ( iigemc ( 3), c8spac ), ( iigemc ( 4), c8tlda )
C
	DATA iigemc / X'00',    X'09',    X'20',    X'7E' /
C                     Null      Tab       Space     Tilda
C!
C*
	CHARACTER*(*)	string, outstr
C*
	CHARACTER	stbuf*160, c*1
C*-------------------------------------------------------------------------
	stbuf = string
	iret  = 0
C
C*	Get length of string.
C
	CALL ST_LSTR  ( stbuf, lens, iret )
C
C*	If length is non-zero, find first non space.
C
	IF  ( lens .eq. 0 )  THEN
	    ncout  = 0
	    outstr = ' '
	  ELSE
	    jp = 1
	    c  = stbuf ( jp:jp )
C
	    DO WHILE  ( ( ( c .eq. CHSPAC ) .or. ( c .eq. CHTAB ) .or.
     +			  ( c .eq. CHNULL ) ) .and. ( jp .le. lens ) )
		jp = jp + 1
		IF  ( jp .le. lens )  c = stbuf ( jp:jp )
	    ENDDO
C
C*	    Compute length and fill output string.
C
	    ncout = lens - jp + 1
	    IF  ( ncout .gt. 0 )  THEN
		outstr = stbuf ( jp : lens )
	      ELSE
		outstr = ' '
	    END IF
	ENDIF
C*  
	RETURN
	END