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authorRichard Henderson <rth@redhat.com>2004-03-06 20:46:23 +0000
committerRichard Henderson <rth@redhat.com>2004-03-06 20:46:23 +0000
commita598e3fc041f38d0c43be55d1664ff7ed0cf405b (patch)
treeda22cbd1cae0cff761823248c1350f7d6ec32177 /sysdeps/alpha/soft-fp/ots_cmp.c
parent4df8c11d26a29bc3a6116a9125cdfdca3cd517bb (diff)
downloadglibc-a598e3fc041f38d0c43be55d1664ff7ed0cf405b.tar.gz
* soft-fp/quad.h (union _FP_UNION_Q): Add longs structure. * sysdeps/alpha/Implies: Add alpha/soft-fp. * sysdeps/alpha/soft-fp/sfp-machine.h: Rewrite for GEM interface. * sysdeps/alpha/Subdirs, sysdeps/alpha/soft-fp/Makefile, sysdeps/alpha/soft-fp/Versions, sysdeps/alpha/soft-fp/local-soft-fp.h, sysdeps/alpha/soft-fp/ots_add.c, sysdeps/alpha/soft-fp/ots_cmp.c, sysdeps/alpha/soft-fp/ots_cmpe.c, sysdeps/alpha/soft-fp/ots_cvtqux.c, sysdeps/alpha/soft-fp/ots_cvtqx.c, sysdeps/alpha/soft-fp/ots_cvttx.c, sysdeps/alpha/soft-fp/ots_cvtxq.c, sysdeps/alpha/soft-fp/ots_cvtxt.c, sysdeps/alpha/soft-fp/ots_div.c, sysdeps/alpha/soft-fp/ots_mul.c, sysdeps/alpha/soft-fp/ots_nintxq.c, sysdeps/alpha/soft-fp/ots_sub.c: New files.
2004-03-06 Richard Henderson <rth@redhat.com> * soft-fp/quad.h (union _FP_UNION_Q): Add longs structure. * sysdeps/alpha/Implies: Add alpha/soft-fp. * sysdeps/alpha/soft-fp/sfp-machine.h: Rewrite for GEM interface. * sysdeps/alpha/Subdirs, sysdeps/alpha/soft-fp/Makefile, sysdeps/alpha/soft-fp/Versions, sysdeps/alpha/soft-fp/local-soft-fp.h, sysdeps/alpha/soft-fp/ots_add.c, sysdeps/alpha/soft-fp/ots_cmp.c, sysdeps/alpha/soft-fp/ots_cmpe.c, sysdeps/alpha/soft-fp/ots_cvtqux.c, sysdeps/alpha/soft-fp/ots_cvtqx.c, sysdeps/alpha/soft-fp/ots_cvttx.c, sysdeps/alpha/soft-fp/ots_cvtxq.c, sysdeps/alpha/soft-fp/ots_cvtxt.c, sysdeps/alpha/soft-fp/ots_div.c, sysdeps/alpha/soft-fp/ots_mul.c, sysdeps/alpha/soft-fp/ots_nintxq.c, sysdeps/alpha/soft-fp/ots_sub.c: New files.
Diffstat (limited to 'sysdeps/alpha/soft-fp/ots_cmp.c')
-rw-r--r--sysdeps/alpha/soft-fp/ots_cmp.c64
1 files changed, 64 insertions, 0 deletions
diff --git a/sysdeps/alpha/soft-fp/ots_cmp.c b/sysdeps/alpha/soft-fp/ots_cmp.c
new file mode 100644
index 0000000000..c356b4848e
--- /dev/null
+++ b/sysdeps/alpha/soft-fp/ots_cmp.c
@@ -0,0 +1,64 @@
+/* Software floating-point emulation: comparison.
+ Copyright (C) 1997,1999,2004 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 "local-soft-fp.h"
+
+static long
+internal_equality (long al, long ah, long bl, long bh, long neq)
+{
+ FP_DECL_EX;
+ FP_DECL_Q(A); FP_DECL_Q(B);
+ long r;
+
+ FP_UNPACK_RAW_Q(A, a);
+ FP_UNPACK_RAW_Q(B, b);
+
+ if ((A_e == _FP_EXPMAX_Q && !_FP_FRAC_ZEROP_2(A))
+ || (B_e == _FP_EXPMAX_Q && !_FP_FRAC_ZEROP_2(B)))
+ {
+ /* EQ and NE signal invalid operation only if either operand is SNaN. */
+ if (FP_ISSIGNAN_Q(A) || FP_ISSIGNAN_Q(B))
+ {
+ FP_SET_EXCEPTION(FP_EX_INVALID);
+ FP_HANDLE_EXCEPTIONS;
+ }
+ return -1;
+ }
+
+ r = (A_e == B_e
+ && _FP_FRAC_EQ_2 (A, B)
+ && (A_s == B_s || (!A_e && _FP_FRAC_ZEROP_2(A))));
+ r ^= neq;
+
+ return r;
+}
+
+long
+_OtsEqlX (long al, long ah, long bl, long bh)
+{
+ return internal_equality (al, ah, bl, bh, 0);
+}
+
+long
+_OtsNeqX (long al, long ah, long bl, long bh)
+{
+ return internal_equality (al, ah, bl, bh, 1);
+}