GRASS GIS 8 Programmer's Manual 8.4.1(2025)-45ca3179ab
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endian.c
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1/*!
2 * \file lib/gis/endian.c
3 *
4 * \brief GIS Library - Functions to determine architecture endian.
5 *
6 * This endian test was taken from ./src.contrib/GMSL/NVIZ2.2/TOGL/apps/image.c.
7 *
8 * (C) 2001-2009 by the GRASS Development Team
9 *
10 * This program is free software under the GNU General Public License
11 * (>=v2). Read the file COPYING that comes with GRASS for details.
12 *
13 * \author Markus Neteler
14 */
15
16/*!
17 * \brief Tests for little ENDIAN.
18 *
19 * Test if machine is little or big endian.
20 *
21 * \return 1 little endian
22 * \return 0 big endian
23 */
25{
26 union {
27 int testWord;
28 char testByte[sizeof(int)];
29 } endianTest;
30
31 endianTest.testWord = 1;
32
33 if (endianTest.testByte[0] == 1)
34 return 1; /* true: little endian */
35
36 return 0; /* false: big endian */
37}
int G_is_little_endian(void)
Tests for little ENDIAN.
Definition endian.c:24