Sources of mathematical functions

[Andrew Haley]

??????? ??????? writes:

 > I was trying to find where the trigonometric functions BODIES are
 > and couldn't found anything.  In the file builtin.c there are many
 > references to the functions, but not the bodies.

They seem to me to be there.  Look at expand_builtin_pow(), for
example.  

But only the mathematical functions that are gcc builtins are handled
in builtins.c: other functions that are library calls are part of
libc, the GNU version of which is at http://www.gnu.org/software/libc/

Andrew.