Convert a string from UTF-8 to a 32-bit fixed width
representation as UCS-4, assuming valid UTF-8 input.
This function is roughly twice as fast as
but does no error checking on the input. A trailing 0 character
will be added to the string after the converted text.
A UTF-8 encoded string.
The data is owned by the caller of the function. The value is a NUL terminated UTF-8 string.
The maximum length of
strto use, in bytes. If
len< 0, then the string is nul-terminated.
Location to store the number of characters in the result, or
The argument will be set by the function. The argument can be