_dtoi.c - scc - simple c99 compiler
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_dtoi.c (261B)
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1 #include <ctype.h>
2 #include <limits.h>
3 #include <string.h>
4
5 #include "../libc.h"
6
7 int
8 _dtoi(char c)
9 {
10 static const char digits[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
11 char *p;
12
13 if (p = strchr(digits, toupper(c)))
14 return p - digits;
15
16 return INT_MAX;
17 }