low_str_vsprintf

Write formatted output using a pointer to a list of arguments. 
l_int 		low_str_vsprintf ( 
		l_text 		buffer, 
		cl_text		format, 
		VA_LIST 	argptr 
); 

Return Value
low_str_vsprintf returns the number of characters written, not including the terminating null character
Parameters
buffer
Storage location for output
format
Format specification
argptr
Pointer to list of arguments
count
Maximum number of bytes to write 
Remarks
Write formatted output using a pointer to a list of arguments.