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Top Forums Programming how to check whether given numbe ris hex or not Post 302244092 by Saurabh78 on Tuesday 7th of October 2008 07:37:58 AM
Old 10-07-2008
prefixed with 0x and every digit must be in between 0-9 and a-f.
 

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UNIUNMASK(1)						      General Commands Manual						      UNIUNMASK(1)

NAME
uniunmask - XOR bits or substitute glyphs in a GNU Unifont file. SYNOPSIS
uniunmask [-iinput_file] [-ooutput_file] DESCRIPTION
uniunmask reads a GNU Unifont .hex file. As it reads the font file, it scans for code points matching entries in the "masks.hex" and "sub- stitutes.hex" files. "masks.hex" and "substitutes.hex" are also in GNU Unifont .hex format, ordered by Unicode code point (the hexadecimal number to the left of the colon on each line). If a code point is encountered from "substitutes.hex", the input code point in the original .hex file is ignored (as is any entry with the same code point in "masks.hex") and the glyph from "substitutes.hex" is written to the output file. Otherwise, if a code point is encountered from "masks.hex", the input glyph in the original .hex file is XORed with the bits in the "masks.hex" entry. The result of this XOR operation is written to the output file. OPTIONS
-i Specify the input file. The default is stdin. -o Specify the output file. The default is stdout. FILES
masks.hex, substitutes.hex, *.hex GNU Unifont font files SEE ALSO
bdfimplode(1), hex2bdf(1), hex2bdf-split(1), hex2sfd(1), hexbraille(1), hexdraw(1), hexmerge(1), johab2ucs2(1), unibmp2hex(1), unicover- age(1), unidup(1), unihex2bmp(1), unipagecount(1) AUTHOR
uniunmask was written by Paul Hardy. LICENSE
uniunmask is Copyright (C) 2007 Paul Hardy, and is released under version 2 of the GNU General Public License, or (at your option) a later version. BUGS
No known real bugs exist, except that this software does not perform extensive error checking on its input files. If they're not in the format of the original GNU Unifont hex file, all bets are off. 2008 Jul 6 UNIUNMASK(1)
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