| /* Software floating-point emulation: comparison. |
| Copyright (C) 1997-2014 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, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #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); |
| } |
