| /* IEEE754 floating point arithmetic |
| * double precision: common utilities |
| */ |
| /* |
| * MIPS floating point support |
| * Copyright (C) 1994-2000 Algorithmics Ltd. |
| * |
| * This program is free software; you can distribute it and/or modify it |
| * under the terms of the GNU General Public License (Version 2) as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * for more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write to the Free Software Foundation, Inc., |
| * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| */ |
| |
| #include "ieee754dp.h" |
| |
| union ieee754dp ieee754dp_neg(union ieee754dp x) |
| { |
| unsigned int oldrm; |
| union ieee754dp y; |
| |
| oldrm = ieee754_csr.rm; |
| ieee754_csr.rm = FPU_CSR_RD; |
| y = ieee754dp_sub(ieee754dp_zero(0), x); |
| ieee754_csr.rm = oldrm; |
| return y; |
| } |
| |
| union ieee754dp ieee754dp_abs(union ieee754dp x) |
| { |
| unsigned int oldrm; |
| union ieee754dp y; |
| |
| oldrm = ieee754_csr.rm; |
| ieee754_csr.rm = FPU_CSR_RD; |
| if (DPSIGN(x)) |
| y = ieee754dp_sub(ieee754dp_zero(0), x); |
| else |
| y = ieee754dp_add(ieee754dp_zero(0), x); |
| ieee754_csr.rm = oldrm; |
| return y; |
| } |
