| /* IEEE754 floating point arithmetic |
| * double precision: common utilities |
| */ |
| /* |
| * MIPS floating point support |
| * Copyright (C) 1994-2000 Algorithmics Ltd. |
| * http://www.algor.co.uk |
| * |
| * ######################################################################## |
| * |
| * 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., |
| * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. |
| * |
| * ######################################################################## |
| */ |
| |
| |
| #include "ieee754dp.h" |
| |
| int ieee754dp_cmp(ieee754dp x, ieee754dp y, int cmp, int sig) |
| { |
| COMPXDP; |
| COMPYDP; |
| |
| EXPLODEXDP; |
| EXPLODEYDP; |
| FLUSHXDP; |
| FLUSHYDP; |
| CLEARCX; /* Even clear inexact flag here */ |
| |
| if (ieee754dp_isnan(x) || ieee754dp_isnan(y)) { |
| if (sig || xc == IEEE754_CLASS_SNAN || yc == IEEE754_CLASS_SNAN) |
| SETCX(IEEE754_INVALID_OPERATION); |
| if (cmp & IEEE754_CUN) |
| return 1; |
| if (cmp & (IEEE754_CLT | IEEE754_CGT)) { |
| if (sig && SETANDTESTCX(IEEE754_INVALID_OPERATION)) |
| return ieee754si_xcpt(0, "fcmpf", x); |
| } |
| return 0; |
| } else { |
| s64 vx = x.bits; |
| s64 vy = y.bits; |
| |
| if (vx < 0) |
| vx = -vx ^ DP_SIGN_BIT; |
| if (vy < 0) |
| vy = -vy ^ DP_SIGN_BIT; |
| |
| if (vx < vy) |
| return (cmp & IEEE754_CLT) != 0; |
| else if (vx == vy) |
| return (cmp & IEEE754_CEQ) != 0; |
| else |
| return (cmp & IEEE754_CGT) != 0; |
| } |
| } |