printf: use local isdigit/isalnum implementation
To be independent of the _ctype array. This makes it possible
to add printf support to the PBL without adding _ctype aswell.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
1 parent 8a7335f commit 017da2273a1bfef0b2b24e50cc124bdc1845e0f3
@Sascha Hauer Sascha Hauer authored on 8 Dec 2014
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lib/vsprintf.c