Looking for C source code for snprintf()

Question

I need to port snprintf() to another platform that does not fully support GLibC.

I am looking for the underlying declaration in the Glibc 2.14 source code. I follow

Answer 1

http://www.ijs.si/software/snprintf/ has what they claim is a portable implementation of snprintf, including vsnprintf.c, asnprintf, vasnprintf, asprintf, vasprintf. Perhaps it can help.