9os

Experimental kernel using plan9 ideas for embedded device
git clone git://git.simple-cc.org/9os
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_dtoi.c (239B)

      1 #include <ctype.h>
      2 #include <limits.h>
      3 #include <string.h>
      4 
      5 int
      6 _dtoi(char c)
      7 {
      8 	static const char digits[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
      9 	char *p;
     10 
     11 	if (p = strchr(digits, toupper(c)))
     12 		return p - digits;
     13 
     14 	return INT_MAX;
     15 }