| // SPDX-License-Identifier: GPL-2.0-only |
| /* IEEE754 floating point arithmetic |
| * double precision: common utilities |
| */ |
| /* |
| * MIPS floating point support |
| * Copyright (C) 1994-2000 Algorithmics Ltd. |
| */ |
| |
| #include "ieee754dp.h" |
| |
| int ieee754dp_cmp(union ieee754dp x, union ieee754dp y, int cmp, int sig) |
| { |
| s64 vx; |
| s64 vy; |
| |
| COMPXDP; |
| COMPYDP; |
| |
| EXPLODEXDP; |
| EXPLODEYDP; |
| FLUSHXDP; |
| FLUSHYDP; |
| ieee754_clearcx(); /* Even clear inexact flag here */ |
| |
| if (ieee754_class_nan(xc) || ieee754_class_nan(yc)) { |
| if (sig || |
| xc == IEEE754_CLASS_SNAN || yc == IEEE754_CLASS_SNAN) |
| ieee754_setcx(IEEE754_INVALID_OPERATION); |
| return (cmp & IEEE754_CUN) != 0; |
| } else { |
| vx = x.bits; |
| 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; |
| } |
| } |
