This is the mail archive of the
gcc-patches@gcc.gnu.org
mailing list for the GCC project.
[PATCH] Use ldexp instead of scalbln for portability (PR other/64370)
- From: Jakub Jelinek <jakub at redhat dot com>
- To: Richard Biener <rguenther at suse dot de>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Mon, 12 Jan 2015 21:10:38 +0100
- Subject: [PATCH] Use ldexp instead of scalbln for portability (PR other/64370)
- Authentication-results: sourceware.org; auth=none
- Reply-to: Jakub Jelinek <jakub at redhat dot com>
Hi!
As mentioned in the PR, HPUX doesn't have scalbln, but does have ldexp and
that function is already used in gcj-dump, so supposedly it is more portable
to use ldexp. Also in glibc it is defined in libc in addition to libm.
Bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk?
2015-01-12 Jakub Jelinek <jakub@redhat.com>
PR other/64370
* sreal.c (sreal::to_double): Use ldexp instead of scalbnl.
--- gcc/sreal.c.jj 2015-01-09 12:01:33.000000000 +0100
+++ gcc/sreal.c 2015-01-12 14:26:44.339128332 +0100
@@ -122,7 +122,7 @@ sreal::to_double () const
{
double val = m_sig;
if (m_exp)
- val = scalbln (val, m_exp);
+ val = ldexp (val, m_exp);
return val;
}
Jakub