Implementation of <tgmath.h>

[Ulrich Drepper]

This leaves the path of sanity but so be it.  I've taken Joseph's
proposal, added yet more gcc magic and have now in the CVS archive a
version of <tgmath.h> which should be standard compliant (as long as
gcc does not learn about _Imaginary).  The code is not comprehensible
anymore without really understanding the language and gcc but it seems
to work.  Using this

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#include <tgmath.h>

#ifndef E
#define E 1
#endif

int
main ()
{
  return cos (cos (cos (E))) != 0;
}
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

I compile run

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drepper@myware $ gcc -c co.c -O -g && nm co.o
         U cos
00000000 T main
drepper@myware $ gcc -c co.c -O -g -DE=1.0 && nm co.o
         U cos
00000000 T main
drepper@myware $ gcc -c co.c -O -g -DE=1.0f && nm co.o
         U cosf
00000000 T main
drepper@myware $ gcc -c co.c -O -g -DE=1.0L && nm co.o
         U cosl
00000000 T main
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Thanks, Joseph.

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