/* $Header: /cvsup/minix/src/lib/ack/libp/wrf.c,v 1.1 2005/10/10 15:27:47 beng Exp $ *//* * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands. * *          This product is part of the Amsterdam Compiler Kit. * * Permission to use, sell, duplicate or disclose this software must be * obtained in writing. Requests for such permissions may be sent to * *      Dr. Andrew S. Tanenbaum *      Wiskundig Seminarium *      Vrije Universiteit *      Postbox 7161 *      1007 MC Amsterdam *      The Netherlands * *//* Author: J.W. Stevenson */#include	<pc_err.h>#include	<pc_file.h>extern		_wstrin();extern char	*_fcvt();#define	assert(x)	/* nothing */#if __STDC__#include <float.h>#define	HUGE_DIG	DBL_MAX_10_EXP	/* log10(maxreal) */#else#define	HUGE_DIG	400	/* log10(maxreal) */#endif#define	PREC_DIG	80	/* the maximum digits returned by _fcvt() */#define	FILL_CHAR	'0'	/* char printed if all of _fcvt() used */#define	BUFSIZE		HUGE_DIG + PREC_DIG + 3_wrf(n,w,r,f) int n,w; double r; struct file *f; {	char *p,*b; int s,d; char buf[BUFSIZE];	if ( n < 0 || w < 0) _trp(EWIDTH);	p = buf;	if (n > PREC_DIG)		n = PREC_DIG;	b = _fcvt(r,n,&d,&s);	assert(abs(d) <= HUGE_DIG);	if (s)		*p++ = '-';	if (d<=0)		*p++ = '0';	else		do			*p++ = (*b ? *b++ : FILL_CHAR);		while (--d > 0);	if (n > 0)		*p++ = '.';	while (++d <= 0) {		if (--n < 0)			break;		*p++ = '0';	}	while (--n >= 0) {		*p++ = (*b ? *b++ : FILL_CHAR);		assert(p <= buf+BUFSIZE);	}	_wstrin(w,(int)(p-buf),buf,f);}