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#include <stddef.h>
#include <stdint.h>
// TODO clean up variable names
int strncmp(const char *s1, const char *s2, unsigned int n) {
int i;
for(i = 0; ((i < (n - 1)) && (s1[i] != '\0') && (s2[i] != '\0')); i++) {
if(s1[i] != s2[i]) {
return(s1[i] - s2[i]);
}
}
return(s1[i] - s2[i]);
}
//this one hasn't been tested
size_t strlen(const char *s) {
size_t len = 0;
while(s[len + 1] != '\0') len++;
return(len);
}
int strcmp(const char *s1, const char *s2) {
int i;
for(i = 0; ((s1[i] != '\0') && (s2[i] != '\0')); i++) {
if(s1[i] != s2[i]) {
return(s1[i] - s2[i]);
}
}
return(s1[i] - s2[i]);
}
int memcmp(const void *s1, const void *s2, size_t n) {
const unsigned char *p1 = s1;
const unsigned char *p2 = s2;
int i;
for(i = 0; i < n - 1; i++) {
if(p1[i] != p2[i]) {
return(p1[i] - p2[i]);
}
}
return(p1[n-1] - p2[n-1]);
}
void strcpy(char *dest, char *src) {
for(unsigned int i = 0; src[i] != '\0'; i++){
dest[i] = src[i];
}
}
void *memcpy(void *dest, char *src, size_t n) {
char *p = dest;
for(unsigned int i = 0; i < n; i++) {
p[i] = src[i];
}
return(dest);
}
void *bzero(void *dest, size_t size) {
char *p = dest;
for(uint64_t i = 0; i < size; i++) {
p[i] = 0;
}
return(dest);
}
//TODO move this function to a seperate math library
int ceil(double n) {
int low_n = (int)n;
if(n == (double)low_n) return(low_n);
return(low_n + 1);
}
int round(double n) {
return(int)(n + 0.5);
}
void *memset(void *s, char c, size_t n) {
char *p = s;
for(size_t i = 0; i < n; i++) {
p[i] = c;
}
return(s);
}
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