stdlib.h

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#ifndef __STDLIB_H__
#define __STDLIB_H__

//#include <stdarg.h>
#include<stddef.h>

#define FALSE 0
#define TRUE 1

char *itoa(unsigned int num)
{
 static char buf[12];
 static char buf2[12];
 int i,j;

 if (num==0)
 {
 buf[0] = '0';
 buf[1] = '\0';
 return &buf[0];
 }

 for(i=0;i<11 && num!=0;i++)
 {
 buf[i]=(char)((num%10)+'0');
 num/=10;
 }
 buf2[i] = '\0';
 j = 0;
 i--;
 for(;i>=0;i--){
 buf2[i]=buf[j];
 j++;
 }
 return &buf2[0];
}


char *itoh(unsigned int num)
{
 static char buf[11];
 int i;
 buf[10]=0;

 buf[0] = '0';
 buf[1] = 'x';

 if (num==0)
 {
 buf[2] = '0';
 buf[3] = '0';
 buf[4] = '0';
 buf[5] = '0';
 buf[6] = '0';
 buf[7] = '0';
 buf[8] = '0';
 buf[9] = '0';
 return buf;
 }

 for(i=9;i>=2;--i)
 {
 if ((num%16) < 10)
 buf[i]=(char)((num%16)+'0');
 else
 buf[i]=(char)((num%16)+'W');

 num/=16;
 }

 return buf;
}

int abs(int num)
{
 if(num<0) return -num;
 else return num;
}

int rand(int seed, int min, int max)
{ 
 int lfsr = seed;
 
 lfsr = (lfsr >> 1) ^ (-(lfsr & 1u) & 0xB400u);
 
 return (lfsr % max + min);
} 

int add(int a, int b)
{
 int res;

 res=a+b;
 return res;
}


int sub(int a, int b)
{
 int res;

 res=a-b;
 return res;
}

void *memset(void *dst, int c, unsigned long bytes) {

 unsigned char *Dst = (unsigned char*)dst;

 while((int)bytes-- > 0)
 *Dst++ = (unsigned char)c;

 return dst;
}

char *fixetoa(int nume)
{
 static char buf[13];
 static char buf2[13];
 int i,j;
 int num=nume;

 if (num<0)
 {
 num=num*(-1);

 for(i=0;i<12 && (num!=0 || i<5) ;i++)
 {
 if (num==0)
 buf[i]='0';
 else
 {
 buf[i]=(char)((num%10)+'0');
 num/=10;
 }
 }
 
 i++;
 i++;
 buf2[i] = '\0';
 j = 0;
 i--;

 for(;i>=0;i--)
 {
 if(j==4)
 {
 buf2[i]='.';
 i--;
 } 
 buf2[i]=buf[j];
 j++;
 }

 buf2[0]='-';
 return &buf2[0];
 }
 else
 {
 if (num==0)
 {
 buf[0] = '0';
 buf[1] = '\0';
 return &buf[0];
 }

 for(i=0;i<12 && (num!=0 || i<5);i++)
 {
 if (num==0)
 buf[i]='0'; 
 else
 {
 buf[i]=(char)((num%10)+'0');
 num/=10;
 }
 }
 
 i++;
 buf2[i] = '\0';
 j = 0;
 i--;
 for(;i>=0;i--)
 {
 if(j==4)
 {
 buf2[i]='.';
 i--;
 } 
 buf2[i]=buf[j];
 j++;
 }
 return &buf2[0];
 }
}

char *strcpy(char *dst, const char *src) {

 char *dstSave=dst;
 int c;

 do {
 c = *dst++ = *src++;
 } while(c);

 return dstSave;
}

/*void memcpy(unsigned int *dest, const unsigned int *src, size_t n) {

 unsigned int i = n/4;

 while(i--)
 dest[i] = src[i];
}*/

int strlen(const char *string) {

 const char *base=string;

 while(*string++) ;

 return string - base - 1;
}

#endif