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Annotation of OpenXM_contrib/gmp/mpfr/mpfr-math.h, Revision 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