/*
	Copyright 1982
	Alcyon Corporation
	8716 Production Ave.
	San Diego, Ca.  92121
*/

/* char *version "@(#)ftol.c	1.2    10/19/83"; */

/* 
 *	Floating Point Float to Long Routine :
 *		Front End to IEEE Floating Point Package.
 *
 *	long
 *	fpftol(fparg)
 *	double fparg;
 *
 *	Return : Fixed Point representation of Floating Point Number
 */

#define BIAS	127L

long
fpftol(f)
long f;
{
	register long l;
	register int exp, sign;

	l = (f & 0x7f800000) >> 23;
	exp = l - BIAS;
	if (f == 0L || exp < 0)		/* underflow or 0 */
		return(0L);
	sign = (f < 0L);
	if (exp > 31)			/* overflow */
		return( (sign) ? 0x80000000 : 0x7fffffff);
	exp =- 23;
	l = (f & 0x7fffff) | 0x800000;	/* 1.F */
	for( ; exp < 0 ; exp++)
		l =>> 1;
	for( ; exp > 0; exp--)
		l =<< 1;
	if (sign)
		l = -l;
	return(l);
}