diff options
Diffstat (limited to 'arch/mips/math-emu/dp_modf.c')
-rw-r--r-- | arch/mips/math-emu/dp_modf.c | 79 |
1 files changed, 0 insertions, 79 deletions
diff --git a/arch/mips/math-emu/dp_modf.c b/arch/mips/math-emu/dp_modf.c deleted file mode 100644 index b01f9cf6d402..000000000000 --- a/arch/mips/math-emu/dp_modf.c +++ /dev/null | |||
@@ -1,79 +0,0 @@ | |||
1 | /* IEEE754 floating point arithmetic | ||
2 | * double precision: common utilities | ||
3 | */ | ||
4 | /* | ||
5 | * MIPS floating point support | ||
6 | * Copyright (C) 1994-2000 Algorithmics Ltd. | ||
7 | * | ||
8 | * ######################################################################## | ||
9 | * | ||
10 | * This program is free software; you can distribute it and/or modify it | ||
11 | * under the terms of the GNU General Public License (Version 2) as | ||
12 | * published by the Free Software Foundation. | ||
13 | * | ||
14 | * This program is distributed in the hope it will be useful, but WITHOUT | ||
15 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
16 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
17 | * for more details. | ||
18 | * | ||
19 | * You should have received a copy of the GNU General Public License along | ||
20 | * with this program; if not, write to the Free Software Foundation, Inc., | ||
21 | * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. | ||
22 | * | ||
23 | * ######################################################################## | ||
24 | */ | ||
25 | |||
26 | |||
27 | #include "ieee754dp.h" | ||
28 | |||
29 | /* modf function is always exact for a finite number | ||
30 | */ | ||
31 | ieee754dp ieee754dp_modf(ieee754dp x, ieee754dp *ip) | ||
32 | { | ||
33 | COMPXDP; | ||
34 | |||
35 | CLEARCX; | ||
36 | |||
37 | EXPLODEXDP; | ||
38 | |||
39 | switch (xc) { | ||
40 | case IEEE754_CLASS_SNAN: | ||
41 | case IEEE754_CLASS_QNAN: | ||
42 | case IEEE754_CLASS_INF: | ||
43 | case IEEE754_CLASS_ZERO: | ||
44 | *ip = x; | ||
45 | return x; | ||
46 | case IEEE754_CLASS_DNORM: | ||
47 | /* far to small */ | ||
48 | *ip = ieee754dp_zero(xs); | ||
49 | return x; | ||
50 | case IEEE754_CLASS_NORM: | ||
51 | break; | ||
52 | } | ||
53 | if (xe < 0) { | ||
54 | *ip = ieee754dp_zero(xs); | ||
55 | return x; | ||
56 | } | ||
57 | if (xe >= DP_MBITS) { | ||
58 | *ip = x; | ||
59 | return ieee754dp_zero(xs); | ||
60 | } | ||
61 | /* generate ipart mantissa by clearing bottom bits | ||
62 | */ | ||
63 | *ip = builddp(xs, xe + DP_EBIAS, | ||
64 | ((xm >> (DP_MBITS - xe)) << (DP_MBITS - xe)) & | ||
65 | ~DP_HIDDEN_BIT); | ||
66 | |||
67 | /* generate fpart mantissa by clearing top bits | ||
68 | * and normalizing (must be able to normalize) | ||
69 | */ | ||
70 | xm = (xm << (64 - (DP_MBITS - xe))) >> (64 - (DP_MBITS - xe)); | ||
71 | if (xm == 0) | ||
72 | return ieee754dp_zero(xs); | ||
73 | |||
74 | while ((xm >> DP_MBITS) == 0) { | ||
75 | xm <<= 1; | ||
76 | xe--; | ||
77 | } | ||
78 | return builddp(xs, xe + DP_EBIAS, xm & ~DP_HIDDEN_BIT); | ||
79 | } | ||