Annotation of OpenXM_contrib/gmp/mpfr/mpfr-math.h, Revision 1.1.1.1
1.1 ohara 1: /* Macros MPFR_DBL_NAN, MPFR_DBL_INFP and MPFR_DBL_INFM
2:
3: Copyright 2002 Free Software Foundation, Inc.
4:
5: This file is part of the MPFR Library.
6:
7: The MPFR Library is free software; you can redistribute it and/or modify
8: it under the terms of the GNU Lesser General Public License as published by
9: the Free Software Foundation; either version 2.1 of the License, or (at your
10: option) any later version.
11:
12: The MPFR Library is distributed in the hope that it will be useful, but
13: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14: or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
15: License for more details.
16:
17: You should have received a copy of the GNU Lesser General Public License
18: along with the MPFR Library; see the file COPYING.LIB. If not, write to
19: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
20: MA 02111-1307, USA. */
21:
22: #if (defined (__arm__) && (defined (__ARMWEL__) || defined (__linux__)))
23: /* little endian ARM */
24: #define _MPFR_NAN_BYTES { 0, 0, 0xf8, 0x7f, 0, 0, 0, 0 }
25: #define _MPFR_INFP_BYTES { 0, 0, 0x80, 0x7f }
26: #define _MPFR_INFM_BYTES { 0, 0, 0x80, 0xff }
27:
28: #else
29: #if defined (_LITTLE_ENDIAN) || defined (__LITTLE_ENDIAN__) \
30: || defined (__alpha) \
31: || (defined (__arm__) && (defined (__ARMWEL__) || defined (__linux__)))\
32: || defined (__clipper__) \
33: || defined (__cris) \
34: || defined (__i386__) \
35: || defined (__i860__) \
36: || defined (__i960__) \
37: || defined (__ia64) \
38: || defined (MIPSEL) || defined (_MIPSEL) \
39: || defined (__ns32000__) \
40: || defined (__WINNT) || defined (_WIN32)
41: #define _MPFR_NAN_BYTES { 0, 0, 0, 0, 0, 0, 0xf8, 0x7f }
42: #define _MPFR_INFP_BYTES { 0, 0, 0x80, 0x7f }
43: #define _MPFR_INFM_BYTES { 0, 0, 0x80, 0xff }
44:
45: #else
46: #if defined (_BIG_ENDIAN) || defined (__BIG_ENDIAN__) \
47: || defined (__mc68000__) || defined (__mc68020__) || defined (__m68k__)\
48: || defined (mc68020) \
49: || defined (__a29k__) || defined (_AM29K) \
50: || defined (__arm__) \
51: || (defined (__convex__) && defined (_IEEE_FLOAT_)) \
52: || defined (_CRAYMPP) || defined (_CRAYIEEE) \
53: || defined (__i370__) || defined (__mvs__) \
54: || defined (__m88000__) \
55: || defined (MIPSEB) || defined (_MIPSEB) \
56: || defined (__hppa) || defined (__hppa__) \
57: || defined (__pyr__) \
58: || defined (__ibm032__) \
59: || defined (_IBMR2) || defined (_ARCH_PPC) \
60: || defined (__sh__) \
61: || defined (__sparc) || defined (sparc) || defined (__sparc__) \
62: || defined (__we32k__)
63: #define _MPFR_NAN_BYTES { 0x7f, 0xf8, 0, 0, 0, 0, 0, 0 }
64: #define _MPFR_INFP_BYTES { 0x7f, 0x80, 0, 0 }
65: #define _MPFR_INFM_BYTES { 0xff, 0x80, 0, 0 }
66: #endif
67: #endif
68: #endif
69:
70: #ifdef NAN
71: #define MPFR_DBL_NAN ((double) NAN)
72: #else
73: #ifdef _MPFR_NAN_BYTES
74: static union { unsigned char c[8]; double d; } __mpfr_nan
75: = { _MPFR_NAN_BYTES };
76: #define MPFR_DBL_NAN ((double) __mpfr_nan.d)
77: #else
78: #define MPFR_DBL_NAN (0./0.)
79: #endif
80: #endif
81:
82: #ifdef HUGE_VAL
83: #define MPFR_DBL_INFP HUGE_VAL
84: #define MPFR_DBL_INFM (-HUGE_VAL)
85: #else
86: #ifdef _MPFR_INFP_BYTES
87: static union { unsigned char c[4]; float d; } __mpfr_infp
88: = { _MPFR_INFP_BYTES };
89: static union { unsigned char c[4]; float d; } __mpfr_infm
90: = { _MPFR_INFM_BYTES };
91: #define MPFR_DBL_INFP ((double) __mpfr_infp.d)
92: #define MPFR_DBL_INFM ((double) __mpfr_infm.d)
93: #else
94: #define MPFR_DBL_INFP (1/0.)
95: #define MPFR_DBL_INFM (-1/0.)
96: #endif
97: #endif
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