1 /* s_nearbyintl.c -- long double version of s_nearbyint.c.
2 * Conversion to IEEE quad long double by Jakub Jelinek, jj@ultra.linux.cz.
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 * ====================================================
18 * Return x rounded to integral value according to the prevailing
21 * Using floating addition.
23 * Inexact flag raised if x not equal to rintl(x).
28 #include <math_private.h>
29 #include <libm-alias-ldouble.h>
31 static const _Float128
33 L(5.19229685853482762853049632922009600E+33), /* 0x406F000000000000, 0 */
34 L(-5.19229685853482762853049632922009600E+33) /* 0xC06F000000000000, 0 */
37 _Float128
__nearbyintl(_Float128 x
)
41 uint64_t i1
__attribute__ ((unused
));
43 GET_LDOUBLE_WORDS64(i0
,i1
,x
);
44 sx
= (((uint64_t)i0
)>>63);
45 j0
= ((i0
>>48)&0x7fff)-0x3fff;
49 w
= TWO112
[sx
] + math_opt_barrier (x
);
53 GET_LDOUBLE_MSW64(i0
,t
);
54 SET_LDOUBLE_MSW64(t
,(i0
&0x7fffffffffffffffLL
)|(sx
<<63));
58 if(j0
==0x4000) return x
+x
; /* inf or NaN */
59 else return x
; /* x is integral */
62 w
= TWO112
[sx
] + math_opt_barrier (x
);
68 libm_alias_ldouble (__nearbyint
, nearbyint
)