1 | initial version |
The process of converting big endian to little endian in C without the use of library functions involves the following steps:
Here is an example code snippet that demonstrates the process:
#include <stdio.h>
int main() {
uint32_t input = 0x12345678; // input in big endian format
uint32_t output; // output in little endian format
uint8_t *inp_ptr = (uint8_t *)&input; // pointer to the input variable
uint8_t *out_ptr = (uint8_t *)&output + sizeof(output) - 1; // pointer to the output variable
for (int i = 0; i < sizeof(uint32_t); i++) {
*out_ptr = *inp_ptr; // copy byte from input to output
inp_ptr++; // move input pointer to next byte
out_ptr--; // move output pointer to previous byte
}
printf("Input (big endian): %08x\n", input);
printf("Output (little endian): %08x\n", output);
return 0;
}
Output:
Input (big endian): 12345678
Output (little endian): 78563412