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swap_tools.cpp
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#include "swap_tools.h"
int is_big_endian()
{
union {
uint32_t i;
char c[4];
} bint = { 0x01020304 };
return bint.c[0] == 1;
}
void swap_endian_s(short* in_s, int n)
{
int i;
union { short smio; char arr[2]; }x;
char buff;
for (i = 0; i < n; i++)
{
x.smio = in_s[i];
buff = x.arr[0];
x.arr[0] = x.arr[1];
x.arr[1] = buff;
in_s[i] = x.smio;
}
}
void swap_endian_i(int* in_i, int n)
{
int i;
union { int imio; float fmio; char arr[4]; }x;
char buff;
for (i = 0; i < n; i++)
{
x.imio = in_i[i];
buff = x.arr[0];
x.arr[0] = x.arr[3];
x.arr[3] = buff;
buff = x.arr[1];
x.arr[1] = x.arr[2];
x.arr[2] = buff;
in_i[i] = x.imio;
}
}
void swap_endian_i(std::vector<int> &in_i)
{
union { int imio; float fmio; char arr[4]; }x;
char buff;
for (size_t i = 0; i < in_i.size(); i++)
{
x.imio = in_i[i];
buff = x.arr[0];
x.arr[0] = x.arr[3];
x.arr[3] = buff;
buff = x.arr[1];
x.arr[1] = x.arr[2];
x.arr[2] = buff;
in_i[i] = x.imio;
}
}
void swap_endian_f(float* in_f, size_t n)
{
size_t i;
union { int imio; float fmio; char arr[4]; }x;
char buff;
for (i = 0; i < n; i++)
{
x.fmio = in_f[i];
buff = x.arr[0];
x.arr[0] = x.arr[3];
x.arr[3] = buff;
buff = x.arr[1];
x.arr[1] = x.arr[2];
x.arr[2] = buff;
in_f[i] = x.fmio;
}
}
void swap_endian_f(float* in_f, int n)
{
int i;
union { int imio; float fmio; char arr[4]; }x;
char buff;
for (i = 0; i < n; i++)
{
x.fmio = in_f[i];
buff = x.arr[0];
x.arr[0] = x.arr[3];
x.arr[3] = buff;
buff = x.arr[1];
x.arr[1] = x.arr[2];
x.arr[2] = buff;
in_f[i] = x.fmio;
}
}
void swap_endian_f(std::vector<float> &in_f)
{
union { int imio; float fmio; char arr[4]; }x;
char buff;
for (size_t i = 0; i < in_f.size(); i++)
{
x.fmio = in_f[i];
buff = x.arr[0];
x.arr[0] = x.arr[3];
x.arr[3] = buff;
buff = x.arr[1];
x.arr[1] = x.arr[2];
x.arr[2] = buff;
in_f[i] = x.fmio;
}
}
void swap_endian_f(float*** in_f, size_t size_x, size_t size_y, size_t size_z)
{
size_t i, j, k;
union { int imio; float fmio; char arr[4]; }x;
char buff;
for (i = 0; i < size_x; i++)
{
for (j = 0; j < size_y; j++)
{
for (k = 0; k < size_z; k++)
{
x.fmio = in_f[i][j][k];
buff = x.arr[0];
x.arr[0] = x.arr[3];
x.arr[3] = buff;
buff = x.arr[1];
x.arr[1] = x.arr[2];
x.arr[2] = buff;
in_f[i][j][k] = x.fmio;
}
}
}
}