Re: Powerpc64 long double support

[Richard Sandiford <rsandifo at redhat dot com>]

Alan Modra <amodra@bigpond.net.au> writes:
> On Wed, Mar 10, 2004 at 09:42:36AM +0000, Richard Sandiford wrote:
>> when compiled with MIPSpro cc.
>
> Does MIPSpro correctly convert a long double -0.0 to double -0.0?  Does
> mips gcc?

Seems like it.  The attached program prints the expected:

      -0 : 80000000 00000000

when compiled with either MIPSpro or gcc 3.4.

Richard


#include <float.h>

void print_it (const char *fmt, double d)
{
  union { double d; unsigned int i[2]; } u;
  u.d = d;
  printf ("%8s : %08x %08x\n", fmt, u.i[0], u.i[1]);
}

long double f () { return -LDBL_MIN / 1e100L; }

int main ()
{
  print_it ("-0", f ());
  return 0;
}