1 /* Copyright (C) 2007-2014 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Richard Henderson.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library. If not, see
17 <http://www.gnu.org/licenses/>. */
22 __nearbyintf (float x)
24 if (isless (fabsf (x), 16777216.0f)) /* 1 << FLT_MANT_DIG */
26 /* Note that Alpha S_Floating is stored in registers in a
27 restricted T_Floating format, so we don't even need to
28 convert back to S_Floating in the end. The initial
29 conversion to T_Floating is needed to handle denormals. */
31 float tmp1, tmp2, new_x;
33 __asm ("cvtst/s %3,%2\n\t"
36 : "=f"(new_x), "=&f"(tmp1), "=&f"(tmp2)
39 /* nearbyintf(-0.1) == -0, and in general we'll always have the same
41 x = copysignf(new_x, x);
46 weak_alias (__nearbyintf, nearbyintf)