uint32_to_binary.c

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#include <stdlib.h>
#include <stdint.h>
#include <memory.h>
 
#include "uint32_to_binary.h"
 
// uint32_to_binary()
void uint32_to_binary(uint32_t number, char* buffer, size_t bufferSize)
{
    if (buffer != NULL && bufferSize > 32)
    {
        int numBits = (sizeof(uint32_t) * 8);
        int maxBitIndex = numBits - 1;
        uint32_t mask = 1;
 
        memset(buffer, 0, bufferSize);
        if ((size_t)maxBitIndex >= bufferSize)
        {
            maxBitIndex = (int)(bufferSize - 1);
        }
        for (int bitIndex = maxBitIndex; bitIndex >= 0; bitIndex--)
        {
            buffer[bitIndex] = (number & mask) ? '1' : '0';
            mask <<= 1;
        }
    }
}