idlastro / Miscellaneous (Non-Astronomy) Procedures: TO_HEX

[Source code]

NAME
TO_HEX
PURPOSE
Translate a non-negative decimal integer to a hexadecimal string
CALLING SEQUENCE
HEX = TO_HEX( D, [ NCHAR ] )
INPUTS
D - non-negative decimal integer, scalar or vector.  If input as a
    string, (e.g. '32') then all leading blanks are removed.
OPTIONAL INPUT
NCHAR - number of characters in the output hexadecimal string.
        If not supplied, then the hex string will contain no 
        leading zeros.
OUTPUT
HEX - hexadecimal translation of input integer, string
EXAMPLES
IDL> A = TO_HEX([11,16])    ==>   A = ['B','10']
IDL> A = TO_HEX(100,3) ==>   A = '064'
METHOD
The hexadecimal format code '(Z)' is used to convert.  No parameter
checking is done.
PROCEDURES CALLED
None.
REVISION HISTORY
Written   W. Landsman         November, 1990
Converted to IDL V5.0   W. Landsman   September 1997
Use FSTRING() for more than 1024 values      March 2000 
Assume since  V5.4, omit FSTRING() call      April 2006