Untitled_Kernel/src/kttools.c

#include "kttools.h"
#include <stdint.h>
/*
 * VARS
 */

//Placeholder.

/*
 * FUNCTIONS
 */


//convert digits from int num to buffer buf. in hex. This is 32 bit only for now!
//WARN: integer is written from right to left into the buffer, and will halt if the buffer is too small.

/**
 * @brief Convert a hex int to string, up to 32 bits.
 *
 *  Converts int "num" into a null-terminated string, placed into buffer "buf".
 *  Evaluates from right to left, so left hand digits will be cut off if the buffer is too small
 *  Should work for non 32-bit integers actually, but is uint32_t for now.
 *  
 *  @param  num:    Value to convert to string
 *  @param  buf:    Memory to place the string into
 *  @param  size:   Size of the memory buffer
 *
 *  @return No return value
 *
 */
void i_to_str(uint32_t num, char* buf, int size, int radix) {
    //null terminate the string
    buf[--size] = '\0';
    while(size > 0 && (num) != 0){
        int isolated_num = num % radix;
        if(isolated_num > 9){
            isolated_num+=7;
        }
        buf[--size] = '0' + isolated_num;
        num/=radix;
    }

    //now shift the whole thing to the left
    if(size != 0) {
        while(buf[size]!='\0') {
            *buf = buf[size];
            buf++;
        } 
        *buf = '\0'; 
    }
}