| memchr | Search buffer for a character |
| memcmp | Compare two buffers |
| memcpy | Copy bytes to buffer from buffer |
| memmove | Copy bytes to buffer from buffer |
| memset | Fill buffer with specified character |
| strcat | Append string |
| strchr | Find character in string |
| strcmp | Compare two strings |
| strcoll | Compare two strings using locale settings |
| strcpy | Copy string |
| strcspn | Search string for occurrence of charcter set |
| strerror | Get pointer to error message string |
| strlen | Return string length |
| strncat | Append substring to string |
| strncmp | Compare some characters of two strings |
| strncpy | Copy characters from one string to another |
| strpbrk | Scan string for specified characters |
| strrchr | Find las occurrence of character in string |
| strspn | Get length of substring composed of given characters |
| strstr | Find substring |
| strtok | Sequentially truncate string if delimiter is found |
| strxfrm | Transform string using locale settings |