V7/usr/src/cmd/xsend/xmail.h

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#include <stdio.h>
#include <mp.h>
extern MINT *x, *b, *one, *c64, *t45, *z, *q, *r, *two, *t15;
extern char buf[256];
#ifdef debug
#define nin(x, y) m_in(x, 8, y)
#define nout(x, y) m_out(x, 8, y)
#endif