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[glibc.git] / sysdeps / powerpc / fpu / s_rintf.c
blob12c6b559762edc36562beafb36bc7c4e3c347ca4
1 /* Round a 32-bit floating point value to the nearest integer.
2 Copyright (C) 1997, 2000 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 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 Library General Public License for more details.
15 You should have received a copy of the GNU Library General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If not,
17 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
20 #include "math.h"
22 float
23 __rintf (float x)
25 static const float TWO23 = 8388608.0;
27 if (fabsf (x) < TWO23)
29 if (x > 0.0)
31 x += TWO23;
32 x -= TWO23;
34 else if (x < 0.0)
36 x = TWO23 - x;
37 x = -(x - TWO23);
41 return x;
43 weak_alias (__rintf, rintf)