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authorJing Yu <jingyu@google.com>2010-07-22 14:03:48 -0700
committerJing Yu <jingyu@google.com>2010-07-22 14:03:48 -0700
commitb094d6c4bf572654a031ecc4afe675154c886dc5 (patch)
tree89394c56b05e13a5413ee60237d65b0214fd98e2 /gcc-4.4.3/gcc/sreal.h
parentdc34721ac3bf7e3c406fba8cfe9d139393345ec5 (diff)
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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.h64
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
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+/* 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