/* Definitions for simple data type for positive real numbers.
|
/* Definitions for simple data type for positive real numbers.
|
Copyright (C) 2002, 2003, 2007 Free Software Foundation, Inc.
|
Copyright (C) 2002, 2003, 2007 Free Software Foundation, Inc.
|
|
|
This file is part of GCC.
|
This file is part of GCC.
|
|
|
GCC is free software; you can redistribute it and/or modify it under
|
GCC is free software; you can redistribute it and/or modify it under
|
the terms of the GNU General Public License as published by the Free
|
the terms of the GNU General Public License as published by the Free
|
Software Foundation; either version 3, or (at your option) any later
|
Software Foundation; either version 3, or (at your option) any later
|
version.
|
version.
|
|
|
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
|
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
|
WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
for more details.
|
for more details.
|
|
|
You should have received a copy of the GNU General Public License
|
You should have received a copy of the GNU General Public License
|
along with GCC; see the file COPYING3. If not see
|
along with GCC; see the file COPYING3. If not see
|
<http://www.gnu.org/licenses/>. */
|
<http://www.gnu.org/licenses/>. */
|
|
|
#ifndef GCC_SREAL_H
|
#ifndef GCC_SREAL_H
|
#define GCC_SREAL_H
|
#define GCC_SREAL_H
|
|
|
/* SREAL_PART_BITS has to be an even number. */
|
/* SREAL_PART_BITS has to be an even number. */
|
#if (HOST_BITS_PER_WIDE_INT / 2) % 2 == 1
|
#if (HOST_BITS_PER_WIDE_INT / 2) % 2 == 1
|
#define SREAL_PART_BITS (HOST_BITS_PER_WIDE_INT / 2 - 1)
|
#define SREAL_PART_BITS (HOST_BITS_PER_WIDE_INT / 2 - 1)
|
#else
|
#else
|
#define SREAL_PART_BITS (HOST_BITS_PER_WIDE_INT / 2)
|
#define SREAL_PART_BITS (HOST_BITS_PER_WIDE_INT / 2)
|
#endif
|
#endif
|
|
|
#define uhwi unsigned HOST_WIDE_INT
|
#define uhwi unsigned HOST_WIDE_INT
|
#define MAX_HOST_WIDE_INT (((uhwi) 1 << (HOST_BITS_PER_WIDE_INT - 1)) - 1)
|
#define MAX_HOST_WIDE_INT (((uhwi) 1 << (HOST_BITS_PER_WIDE_INT - 1)) - 1)
|
|
|
#define SREAL_MIN_SIG ((uhwi) 1 << (SREAL_PART_BITS - 1))
|
#define SREAL_MIN_SIG ((uhwi) 1 << (SREAL_PART_BITS - 1))
|
#define SREAL_MAX_SIG (((uhwi) 1 << SREAL_PART_BITS) - 1)
|
#define SREAL_MAX_SIG (((uhwi) 1 << SREAL_PART_BITS) - 1)
|
#define SREAL_MAX_EXP (INT_MAX / 4)
|
#define SREAL_MAX_EXP (INT_MAX / 4)
|
|
|
#if SREAL_PART_BITS < 32
|
#if SREAL_PART_BITS < 32
|
#define SREAL_BITS (SREAL_PART_BITS * 2)
|
#define SREAL_BITS (SREAL_PART_BITS * 2)
|
#else
|
#else
|
#define SREAL_BITS SREAL_PART_BITS
|
#define SREAL_BITS SREAL_PART_BITS
|
#endif
|
#endif
|
|
|
/* Structure for holding a simple real number. */
|
/* Structure for holding a simple real number. */
|
typedef struct sreal
|
typedef struct sreal
|
{
|
{
|
#if SREAL_PART_BITS < 32
|
#if SREAL_PART_BITS < 32
|
unsigned HOST_WIDE_INT sig_lo; /* Significant (lower part). */
|
unsigned HOST_WIDE_INT sig_lo; /* Significant (lower part). */
|
unsigned HOST_WIDE_INT sig_hi; /* Significant (higher part). */
|
unsigned HOST_WIDE_INT sig_hi; /* Significant (higher part). */
|
#else
|
#else
|
unsigned HOST_WIDE_INT sig; /* Significant. */
|
unsigned HOST_WIDE_INT sig; /* Significant. */
|
#endif
|
#endif
|
signed int exp; /* Exponent. */
|
signed int exp; /* Exponent. */
|
} sreal;
|
} sreal;
|
|
|
extern void dump_sreal (FILE *, sreal *);
|
extern void dump_sreal (FILE *, sreal *);
|
extern sreal *sreal_init (sreal *, unsigned HOST_WIDE_INT, signed int);
|
extern sreal *sreal_init (sreal *, unsigned HOST_WIDE_INT, signed int);
|
extern HOST_WIDE_INT sreal_to_int (sreal *);
|
extern HOST_WIDE_INT sreal_to_int (sreal *);
|
extern int sreal_compare (sreal *, sreal *);
|
extern int sreal_compare (sreal *, sreal *);
|
extern sreal *sreal_add (sreal *, sreal *, sreal *);
|
extern sreal *sreal_add (sreal *, sreal *, sreal *);
|
extern sreal *sreal_sub (sreal *, sreal *, sreal *);
|
extern sreal *sreal_sub (sreal *, sreal *, sreal *);
|
extern sreal *sreal_mul (sreal *, sreal *, sreal *);
|
extern sreal *sreal_mul (sreal *, sreal *, sreal *);
|
extern sreal *sreal_div (sreal *, sreal *, sreal *);
|
extern sreal *sreal_div (sreal *, sreal *, sreal *);
|
|
|
#endif
|
#endif
|
|
|
