diff options
author | Austin Foxley <austinf@cetoncorp.com> | 2010-11-18 10:20:43 -0800 |
---|---|---|
committer | Austin Foxley <austinf@cetoncorp.com> | 2010-11-18 10:20:43 -0800 |
commit | e428bff6b2825a5081ae2f081471e5e3921a2e9f (patch) | |
tree | 08f93666d5eccc626207da68cb7b699ae14af2f9 /libc/sysdeps/linux/sparc/soft-fp/q_neg.c | |
parent | c452a58e65a2600ab1e9a7be2e5a6e4cae0e8b2a (diff) |
Adding quad float gcc intrinsic implementation for SPARC
Sparc-Gcc generates q_xxx intrinsic calls for quad float ("long double")
code. The routines from glibc's glibc-2.9/sysdeps/sparc/sparc32/soft-fp/*
where taken and ported to uclibc.
Signed-off-by: Konrad Eisele <konrad@gaisler.com>
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
Diffstat (limited to 'libc/sysdeps/linux/sparc/soft-fp/q_neg.c')
-rw-r--r-- | libc/sysdeps/linux/sparc/soft-fp/q_neg.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/sparc/soft-fp/q_neg.c b/libc/sysdeps/linux/sparc/soft-fp/q_neg.c new file mode 100644 index 000000000..14f39e820 --- /dev/null +++ b/libc/sysdeps/linux/sparc/soft-fp/q_neg.c @@ -0,0 +1,47 @@ +/* Software floating-point emulation. + Return !a + Copyright (C) 1997,1999 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Richard Henderson (rth@cygnus.com) and + Jakub Jelinek (jj@ultra.linux.cz). + + 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 "soft-fp.h" +#include "quad.h" + +long double _Q_neg(const long double a) +{ + FP_DECL_EX; + long double c = a; + +#if (__BYTE_ORDER == __BIG_ENDIAN) + ((UWtype *)&c)[0] ^= (((UWtype)1) << (W_TYPE_SIZE - 1)); +#elif (__BYTE_ORDER == __LITTLE_ENDIAN) && (W_TYPE_SIZE == 64) + ((UWtype *)&c)[1] ^= (((UWtype)1) << (W_TYPE_SIZE - 1)); +#elif (__BYTE_ORDER == __LITTLE_ENDIAN) && (W_TYPE_SIZE == 32) + ((UWtype *)&c)[3] ^= (((UWtype)1) << (W_TYPE_SIZE - 1)); +#else + FP_DECL_Q(A); FP_DECL_Q(C); + + FP_UNPACK_Q(A, a); + FP_NEG_Q(C, A); + FP_PACK_Q(c, C); +#endif + FP_CLEAR_EXCEPTIONS; + FP_HANDLE_EXCEPTIONS; + return c; +} |