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author | Jing Yu <jingyu@google.com> | 2010-07-22 14:03:48 -0700 |
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committer | Jing Yu <jingyu@google.com> | 2010-07-22 14:03:48 -0700 |
commit | b094d6c4bf572654a031ecc4afe675154c886dc5 (patch) | |
tree | 89394c56b05e13a5413ee60237d65b0214fd98e2 /gcc-4.4.3/gcc/sreal.h | |
parent | dc34721ac3bf7e3c406fba8cfe9d139393345ec5 (diff) | |
download | toolchain_gcc-b094d6c4bf572654a031ecc4afe675154c886dc5.tar.gz toolchain_gcc-b094d6c4bf572654a031ecc4afe675154c886dc5.tar.bz2 toolchain_gcc-b094d6c4bf572654a031ecc4afe675154c886dc5.zip |
commit gcc-4.4.3 which is used to build gcc-4.4.3 Android toolchain in master.
The source is based on fsf gcc-4.4.3 and contains local patches which
are recorded in gcc-4.4.3/README.google.
Change-Id: Id8c6d6927df274ae9749196a1cc24dbd9abc9887
Diffstat (limited to 'gcc-4.4.3/gcc/sreal.h')
-rw-r--r-- | gcc-4.4.3/gcc/sreal.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/gcc-4.4.3/gcc/sreal.h b/gcc-4.4.3/gcc/sreal.h new file mode 100644 index 000000000..329d6771a --- /dev/null +++ b/gcc-4.4.3/gcc/sreal.h @@ -0,0 +1,64 @@ +/* Definitions for simple data type for positive real numbers. + Copyright (C) 2002, 2003, 2007 Free Software Foundation, Inc. + +This file is part of GCC. + +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 +Software Foundation; either version 3, or (at your option) any later +version. + +GCC is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +You should have received a copy of the GNU General Public License +along with GCC; see the file COPYING3. If not see +<http://www.gnu.org/licenses/>. */ + +#ifndef GCC_SREAL_H +#define GCC_SREAL_H + +/* SREAL_PART_BITS has to be an even number. */ +#if (HOST_BITS_PER_WIDE_INT / 2) % 2 == 1 +#define SREAL_PART_BITS (HOST_BITS_PER_WIDE_INT / 2 - 1) +#else +#define SREAL_PART_BITS (HOST_BITS_PER_WIDE_INT / 2) +#endif + +#define uhwi unsigned HOST_WIDE_INT +#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_MAX_SIG (((uhwi) 1 << SREAL_PART_BITS) - 1) +#define SREAL_MAX_EXP (INT_MAX / 4) + +#if SREAL_PART_BITS < 32 +#define SREAL_BITS (SREAL_PART_BITS * 2) +#else +#define SREAL_BITS SREAL_PART_BITS +#endif + +/* Structure for holding a simple real number. */ +typedef struct sreal +{ +#if SREAL_PART_BITS < 32 + unsigned HOST_WIDE_INT sig_lo; /* Significant (lower part). */ + unsigned HOST_WIDE_INT sig_hi; /* Significant (higher part). */ +#else + unsigned HOST_WIDE_INT sig; /* Significant. */ +#endif + signed int exp; /* Exponent. */ +} sreal; + +extern void dump_sreal (FILE *, sreal *); +extern sreal *sreal_init (sreal *, unsigned HOST_WIDE_INT, signed int); +extern HOST_WIDE_INT sreal_to_int (sreal *); +extern int sreal_compare (sreal *, sreal *); +extern sreal *sreal_add (sreal *, sreal *, sreal *); +extern sreal *sreal_sub (sreal *, sreal *, sreal *); +extern sreal *sreal_mul (sreal *, sreal *, sreal *); +extern sreal *sreal_div (sreal *, sreal *, sreal *); + +#endif |