An implementation of the standard vsprintf() function which supports positional parameters, as specified in the Single Unix Specification. Since 2.2
the buffer to hold the output.
a standard printf() format string, but notice string precision pitfalls.
the list of arguments to insert in the output.
the number of bytes printed.
See Implementation
An implementation of the standard vsprintf() function which supports positional parameters, as specified in the Single Unix Specification. Since 2.2