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/*
NASA/TRMM, Code 910.1.
This is the TRMM Office Radar Software Library.
Copyright (C) 1996, 1997
John H. Merritt
Space Applications Corporation
Vienna, Virginia
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
int big_endian(void);
int little_endian(void);
void swap_4_bytes(void *word);
void swap_2_bytes(void *word);
int big_endian(void)
{
union {
unsigned char byte[4];
int val;
} word;
word.val = 0;
word.byte[3] = 0x1;
return word.val == 1;
}
int little_endian(void)
{
union {
unsigned char byte[4];
int val;
} word;
word.val = 0;
word.byte[3] = 0x1;
return word.val != 1;
}
void swap_4_bytes(void *word)
{
unsigned char *byte;
unsigned char temp;
byte = word;
temp = byte[0];
byte[0] = byte[3];
byte[3] = temp;
temp = byte[1];
byte[1] = byte[2];
byte[2] = temp;
}
void swap_2_bytes(void *word)
{
unsigned char *byte;
unsigned char temp;
byte = word;
temp = byte[0];
byte[0] = byte[1];
byte[1] = temp;
}
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