[Bug target/25477] builtin functions should use $LDBL128 suffix on darwin when appropriate

[fxcoudert at gcc dot gnu dot org]

------- Comment #13 from fxcoudert at gcc dot gnu dot org  2008-02-21 14:12 
-------
Still there with on trunk (4.4) and MacOS 10.5.2:

$ cat s.c
int main (void)
{
  long double x;
  double y;

  x = -0.24; y = x;
  __builtin_printf ("%g %g %g\n", (float) __builtin_asinl(x),
                    (float) __builtin_asin(y),
                    (float) (__builtin_asinl(x) - __builtin_asin(y)));
}

$ ./bin/gcc s.c && ./a.out
-0.242366 -0.242366 0.5

asin() and asinl() values are very close, but their difference is output as
0.5. Adding a simple #include <math.h> on top of this makes it pass:

$ cat s2.c
#include <math.h>
int main (void)
{
  long double x;
  double y;

  x = -0.24; y = x;
  __builtin_printf ("%g %g %g\n", (float) __builtin_asinl(x),
                    (float) __builtin_asin(y),
                    (float) (__builtin_asinl(x) - __builtin_asin(y)));
}
$ ./bin/gcc s2.c && ./a.out
-0.242366 -0.242366 -8.82009e-18


-- 

fxcoudert at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to fail|                            |4.2.0 4.3.0 4.4.0
   Last reconfirmed|2007-01-14 22:24:04         |2008-02-21 14:12:02
               date|                            |
            Version|4.2.0                       |4.4.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25477