1 /* s_rintf.c -- float version of s_rint.c.
2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
6 * ====================================================
7 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
9 * Developed at SunPro, a Sun Microsystems, Inc. business.
10 * Permission to use, copy, modify, and distribute this
11 * software is freely granted, provided that this notice
13 * ====================================================
15 * $NetBSD: s_rintf.c,v 1.7 2002/05/26 22:01:58 wiz Exp $
16 * $DragonFly: src/lib/libm/src/s_rintf.c,v 1.1 2005/07/26 21:15:20 joerg Exp $
20 #include "math_private.h"
24 8.3886080000e+06, /* 0x4b000000 */
25 -8.3886080000e+06, /* 0xcb000000 */
36 j0 = ((i0>>23)&0xff)-0x7f;
39 if((i0&0x7fffffff)==0) return x;
42 i0 |= ((i1|-i1)>>9)&0x400000;
47 SET_FLOAT_WORD(t,(i0&0x7fffffff)|(sx<<31));
51 if((i0&i)==0) return x; /* x is integral */
53 if((i0&i)!=0) i0 = (i0&(~i))|((0x100000)>>j0);
56 if(j0==0x80) return x+x; /* inf or NaN */
57 else return x; /* x is integral */