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Don't use evil errno kludge, write a function that libc can use.
author Daniel O'Connor <darius@dons.net.au>
date Tue, 26 Mar 2013 15:09:46 +1030
parents c59513fd84fb
children
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#ifndef COMM_H_
#define COMM_H_

void comm_init(void);
int  comm_test(void);
void comm_put(char);
void comm_puts(const char*);
char comm_get(void);

#endif