1 /* origin: FreeBSD /usr/src/lib/msun/src/s_truncf.c */
3 * ====================================================
4 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
6 * Developed at SunPro, a Sun Microsystems, Inc. business.
7 * Permission to use, copy, modify, and distribute this
8 * software is freely granted, provided that this notice
10 * ====================================================
14 * Return x rounded toward 0 to integral value
18 * Inexact flag raised if x not equal to truncf(x).
23 static const float huge = 1.0e30f;
30 GET_FLOAT_WORD(i0, x);
31 j0 = ((i0>>23)&0xff) - 0x7f;
33 if (j0 < 0) { /* |x|<1, return 0*sign(x) */
34 /* raise inexact if x != 0 */
40 return x; /* x is integral */
47 return x + x; /* inf or NaN */
48 return x; /* x is integral */
50 SET_FLOAT_WORD(x, i0);