From e9d7220ba189fde24bd9565a2bcbdfd69254a726 Mon Sep 17 00:00:00 2001 From: zlomek Date: Mon, 10 Feb 2003 12:34:24 +0000 Subject: * Makefile.in (sreal.o): Added. (predict.o): Depends on sreal.h instead of real.h. * sreal.c: New file. * sreal.h: New file. * predict.c: Use sreal.c instead of real.c. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@62630 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/sreal.h | 67 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 gcc/sreal.h (limited to 'gcc/sreal.h') diff --git a/gcc/sreal.h b/gcc/sreal.h new file mode 100644 index 00000000000..ac90fececa3 --- /dev/null +++ b/gcc/sreal.h @@ -0,0 +1,67 @@ +/* Definitions for simple data type for positive real numbers. + Copyright (C) 2002 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 2, 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 COPYING. If not, write to the Free +Software Foundation, 59 Temple Place - Suite 330, Boston, MA +02111-1307, USA. */ + +#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 PARAMS ((FILE *, sreal *)); +extern sreal *sreal_init PARAMS ((sreal *, + unsigned HOST_WIDE_INT, + signed int)); +extern HOST_WIDE_INT sreal_to_int PARAMS ((sreal *)); +extern int sreal_compare PARAMS ((sreal *, sreal *)); +extern sreal *sreal_add PARAMS ((sreal *, sreal *, sreal *)); +extern sreal *sreal_sub PARAMS ((sreal *, sreal *, sreal *)); +extern sreal *sreal_mul PARAMS ((sreal *, sreal *, sreal *)); +extern sreal *sreal_div PARAMS ((sreal *, sreal *, sreal *)); + +#endif -- cgit v1.2.1