2 * IEEE754 floating point
3 * double precision internal header file
6 * MIPS floating point support
7 * Copyright (C) 1994-2000 Algorithmics Ltd.
9 * ########################################################################
11 * This program is free software; you can distribute it and/or modify it
12 * under the terms of the GNU General Public License (Version 2) as
13 * published by the Free Software Foundation.
15 * This program is distributed in the hope it will be useful, but WITHOUT
16 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
17 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
20 * You should have received a copy of the GNU General Public License along
21 * with this program; if not, write to the Free Software Foundation, Inc.,
22 * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
24 * ########################################################################
28 #include "ieee754int.h"
30 #define assert(expr) ((void)0)
32 /* 3bit extended single precision sticky right shift */
33 #define SPXSRSXn(rs) \
35 xm = (rs > (SP_MBITS+3))?1:((xm) >> (rs)) | ((xm) << (32-(rs)) != 0))
38 (xe++, (xm = (xm >> 1) | (xm & 1)))
40 #define SPXSRSYn(rs) \
42 ym = (rs > (SP_MBITS+3))?1:((ym) >> (rs)) | ((ym) << (32-(rs)) != 0))
45 (ye++, (ym = (ym >> 1) | (ym & 1)))
47 /* convert denormal to normalized with extended exponent */
48 #define SPDNORMx(m,e) \
49 while( (m >> SP_MBITS) == 0) { m <<= 1; e--; }
50 #define SPDNORMX SPDNORMx(xm, xe)
51 #define SPDNORMY SPDNORMx(ym, ye)
53 static inline ieee754sp
buildsp(int s
, int bx
, unsigned m
)
57 assert((s
) == 0 || (s
) == 1);
58 assert((bx
) >= SP_EMIN
- 1 + SP_EBIAS
59 && (bx
) <= SP_EMAX
+ 1 + SP_EBIAS
);
60 assert(((m
) >> SP_MBITS
) == 0);
69 extern int ieee754sp_isnan(ieee754sp
);
70 extern int ieee754sp_issnan(ieee754sp
);
71 extern int ieee754si_xcpt(int, const char *, ...);
72 extern s64
ieee754di_xcpt(s64
, const char *, ...);
73 extern ieee754sp
ieee754sp_xcpt(ieee754sp
, const char *, ...);
74 extern ieee754sp
ieee754sp_nanxcpt(ieee754sp
, const char *, ...);
75 extern ieee754sp
ieee754sp_bestnan(ieee754sp
, ieee754sp
);
76 extern ieee754sp
ieee754sp_format(int, int, unsigned);
79 #define SPNORMRET2(s, e, m, name, a0, a1) \
81 ieee754sp V = ieee754sp_format(s, e, m); \
83 return ieee754sp_xcpt(V, name, a0, a1); \
88 #define SPNORMRET1(s, e, m, name, a0) SPNORMRET2(s, e, m, name, a0, a0)
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