diff options
author | joseph <joseph@7b3dc134-2b1b-0410-93df-9e9f96275f8d> | 2008-12-10 16:39:54 +0000 |
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committer | joseph <joseph@7b3dc134-2b1b-0410-93df-9e9f96275f8d> | 2008-12-10 16:39:54 +0000 |
commit | 0f1e140e796f55cf5f07d39707f3e88d335f4ff1 (patch) | |
tree | e44d49e4cb8da17389d4ffa57e784f7ee91d3381 /ports/sysdeps/alpha/fpu/s_rint.c | |
parent | 8acd6170c246b159d26f05d85fa256746391d3d7 (diff) |
Merge changes between r7357 and r7510 from /fsf/trunk.
git-svn-id: svn://svn.eglibc.org/trunk@7511 7b3dc134-2b1b-0410-93df-9e9f96275f8d
Diffstat (limited to 'ports/sysdeps/alpha/fpu/s_rint.c')
-rw-r--r-- | ports/sysdeps/alpha/fpu/s_rint.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/ports/sysdeps/alpha/fpu/s_rint.c b/ports/sysdeps/alpha/fpu/s_rint.c new file mode 100644 index 000000000..e9aa02882 --- /dev/null +++ b/ports/sysdeps/alpha/fpu/s_rint.c @@ -0,0 +1,45 @@ +/* Copyright (C) 2000, 2006, 2007 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Richard Henderson. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <math.h> +#include <math_ldbl_opt.h> + + +double +__rint (double x) +{ + double two52 = copysign (0x1.0p52, x); + double r; + + r = x + two52; + r = r - two52; + + /* rint(-0.1) == -0, and in general we'll always have the same sign + as our input. */ + return copysign (r, x); +} + +weak_alias (__rint, rint) +#ifdef NO_LONG_DOUBLE +strong_alias (__rint, __rintl) +weak_alias (__rint, rintl) +#endif +#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0) +compat_symbol (libm, __rint, rintl, GLIBC_2_0); +#endif |