blob: 54cdc3af76a7125ed106f2941fd237f85c721675 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
/* Copyright (C) 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <math.h>
/* The uitrunc function returns the nearest unsigned integer
to the x parameter in the direction of 0. This actions is
equivalent to truncation off the fraction bits of the x
parameter and then converting x to an unsigned integer. */
unsigned int
__uitrunc (double x)
{
double xrf;
unsigned int xr;
xr = (unsigned int) x;
xrf = (double) xr;
if (x >= 0.0)
if (x - xrf >= 0.5 && x - xrf < 1.0 && x + 1 > 0)
return x + 1;
else
return x;
else
if (xrf - x >= 0.5 && xrf - x < 1.0 && x - 1 < 0)
return x - 1;
else
return x;
}
|
