yigtuyumz / utils

C utilities

Utilites for C

libutils is a dynamic C library of the functions which i am using mostly.

Folder Structure

• ./include/

  Contains header file(s).

   /* utils.h */
  
   /* if _UTILS_MACRO */
   #define    ABS(X)           ((X) < 0x00 ? ((X) = (-X)) : ((X) = (X)))
   #define    CLEARBIT(X, N)   ((X) = ((X) & (~(0x01 << (N)))))
   #define    GETBIT(X, N)     (((X) >> (N)) & 0x01)
   #define    SETBIT(X, N)     ((X) = ((X) | (0x01 << (N))))
   #define    TOGGLEBIT(X, N)  ((X) = ((X) ^ (0x01 << (N))))
   /* endif _UTILS_MACRO */
  
   int
   utils_atoi(const char *nbr);
  
   void
   utils_bzero(void *s, size_t n);
  
   double
   utils_floor(double x);
  
   int
   utils_isprime(unsigned int nb);
  
   int
   utils_isspace(int c);
  
   int
   utils_isxdigit(int c);
  
   char *
   utils_itoa(int nb);
  
   void *
   utils_memcpy(void *dest, const void *src, size_t n);
  
   void *
   utils_memset(void *dest, int c, size_t n);
  
   void
   utils_putchar(int fd, char c);
  
   void
   utils_putnbr(int fd, int nb);
  
   void
   utils_putstr(int fd, const char *str);
  
   char *
   utils_strcat(char *dest, const char *src);
  
   char *
   utils_strchr(const char *str, int val);
  
   int
   utils_strcmp(const char *a, const char *b);
  
   char *
   utils_strcpy(char * restrict dest, const char * restrict src);
  
   char *
   utils_strdup(const char *str);
  
   size_t
   utils_strlen(const char *str);
  
   char *
   utils_strncat(char *dest, const char *src, size_t n);
  
   int 
   utils_strncmp(const char *a, const char *b, size_t n);
  
   char *
   utils_strncpy(char * restrict dest, const char * restrict src, size_t n);
  
   char *
   utils_strndup(const char *str, size_t len);
  
   size_t
   utils_strnlen(const char *str, size_t n);
  
   char *
   utils_strnstr(const char *haystack, const char *needle, size_t n);
  
   char *
   utils_strrchr(const char *str, int val);
  
   char *
   utils_strstr(const char *haystack, const char *needle);
  
   void
   utils_swapn(void *a, void *b, size_t n);
  
   void
   utils_vaput(int fd, char *fmt, ...);
   /* end of utils.h */

   # include libutils.so file to the project
   FLAGS = -L/path/to/so/file -llibnamewithoutextension -Wl,-rpath=/path/to/so/file

• ./tests/

  Test environment. Contains files related to test cases.

• ./src/

  Contains source files named same as the function name.

TODO's

• Improve infrastructure of autotools build system. (consider re-write configure.ac and Makefile.am files)
• Create an extra header file for macros and constants (?)

Tools

• Binary to Decimal Converter
• Word Sort

See Also

• Knuth–Morris–Pratt Algorithm
• Single Precision Floating-point Format
• Double Precision Floating-point Format
• Race Condition
• Prime Numbers 6k+-1 Theorem