source: trunk/sys/dietlibc/isalnum.c @ 1

Last change on this file since 1 was 1, checked in by alain, 5 years ago

First import

File size: 140 bytes
Line 
1#include <ctype.h>
2
3int isalnum(int ch) {
4  return (unsigned int)((ch | 0x20) - 'a') < 26u  ||
5         (unsigned int)( ch         - '0') < 10u;
6}
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