Utility Functions
The utility functions are:
- nulldev()
Zero return function
- nodev()
Error return function
- nochpoll()
Error return function for non-pollable devices
- ASSERT()
Expression verification
- bcopy()
Copy data between address locations in the kernel
- bzero()
Clear memory for a given number of bytes
- bcmp()
Compare two byte arrays
- ddi_ffs()
Find the first bit set in a long integer
- ddi_fls()
Find the last bit set in a long integer
- swab()
Swap bytes in 16-bit halfwords
- strcmp()
Compare two null-terminated strings
- strncmp()
Compare two null-terminated strings, with length limit
- strlen()
Determine the number of non-null bytes in a string
- strnlen()
(Available starting with SXCE build 88) Determine the number of non-null bytes in a string, with length limit
- strcpy()
Copy a string from one location to another
- strncpy()
Copy a string from one location to another, with length limit
- strchr()
Find a character in a string
- sprintf(), vsprintf()
Format characters in memory
- numtos()
Convert an integer to a decimal string
- stoi()
Convert a decimal string to an integer
- max()
Return the larger of two integers
- min()
Return the lesser of two integers
- va_arg()
Finds the next value in a variable argument list
- va_copy()
Copies the state of a variable argument list
- va_end()
Deletes pointer to a variable argument list
- va_start()
Finds the pointer to the start of a variable argument list
