From 9a8ce21f3b47a109b9ac35239e21198bb36e1146 Mon Sep 17 00:00:00 2001 From: Jon Grimm Date: Fri, 16 Dec 2005 06:38:26 +0000 Subject: target-def.h (TARGET_DECIMAL_FLOAT_SUPPORTED_P): New. 2005-12-16 Jon Grimm Janis Johnson Ben Elliston * target-def.h (TARGET_DECIMAL_FLOAT_SUPPORTED_P): New. (TARGET_INITIALIZER): Add TARGET_DECIMAL_FLOAT_P. * target.h (struct gcc_target): Add decimal_float_supported_p. * targhooks.c (default_scalar_mode_supported_p): Handle MODE_DECIMAL_FLOAT. * builtins.def: Add new builtins for 32, 64 and 128 bit variants of inf, nan, finite, isinf and isnan. * builtin-types.def (BT_DFLOAT32, BT_DFLOAT64, BT_DFLOAT128, BT_DFLOAT32_PTR, BT_DFLOAT64_PTR, BT_DFLOAT128_PTR, BT_FN_DFLOAT32, BT_FN_DFLOAT64, BT_FN_DFLOAT128, BT_FN_INT_DFLOAT32, BT_FN_INT_DFLOAT64, BT_FN_INT_DFLOAT128, BT_FN_DFLOAT32_CONST_STRING, BT_FN_DFLOAT64_CONST_STRING, BT_FN_DFLOAT32_CONST_STRING, BT_FN_DFLOAT32_DFLOAT32, BT_FN_DFLOAT64_DFLOAT64, BT_FN_DFLOAT128_DFLOAT128): New. * c-decl.c (declspecs_add_type): Verify combos on type qualifiers. Pedwarn if decimal floating point types are used. Error if decimal floating point is not supported by the target. (finish_declspecs): Return type from DFP typespec_word. * c-typeck.c (c_common_type): Choose the decimal floating point type with the greater precision when determining a common type. (convert_arguments): Warn if there is a mismatch between argument and prototype for decimal float types. Warn of conversions with binary float types and of precision narrowing due to prototype. * c-parser.c (reswords): Add _Decimal32, _Decimal64, _Decimal128. (c_token_starts_typename): Handle RID_DFLOAT32/64/128. (c_token_starts_declspecs): Likewise. (c_parser_attributes): Likewise. * c-common.h (enum rid): Add new enumeration values RID_DFLOAT32, RID_DFLOAT64, RID_DFLOAT128. (T_D32, TEX_D32, T_D64, TEX_D64, T_D128, TEX_D128): New macros. * c-common.c (c_common_type_for_mode): Handle decimal float modes. (shorten_compare): Convert DFP/BFP operands to a common type. (c_common_modes_and_builtins): Register built-in decimal float types if the target supports them. (handle_mode_addtribute): Handle MODE_DECIMAL_FLOAT. * builtins.c (fold_builtin_1): Handle 32, 64 and 128 bit cases of inf, nan, finite, isinf and isnan builtins. * c-cppbuiltin.c (builtin_define_decimal_float_constants): New. (builtin_define_float_constants): Assert non-decimal radix. (c_cpp_builtins): Register built-in __DEC_EVAL_METHOD__ define. Call builtin_define_decimal_float_constants for each type. * c-lex.c (interpret_float): Decode decimal float types from CPP_N flags. Use real_from_string3, which can handle binary or decimal floats. * c-tree.h (enum c_typespec_keyword): Add cts_dfloat32, cts_dfloat64, cts_dfloat128. * tree.c (build_common_tree_nodes_2): Add decimal float types. * tree.h (enum tree_index): Add new enumeration values TI_DFLOAT32_TYPE, TI_DFLOAT64_TYPE, TI_DFLOAT128_TYPE, TI_DFLOAT32_PTR_TYPE, TI_DFLOAT64_PTR_TYPE, TI_DFLOAT128_PTR_TYPE. (dfloat32_type_node): New macro. (dfloat64_type_node, dfloat128_type_node): Likewise. (dfloat32_ptr_type_node, dfloat64_ptr_type_node): Likewise. (dfloat128_ptr_type_node): Likewise. * c-pretty-print.c (pp_c_floating_constant): Append 32, 64 and 128 bit decimal floating point types with "df", "dd" and "dl". * c-format.h (enum format_lengths): Add new enumeration values FMT_LEN_H, FMT_LEN_D and FMT_LEN_DD. * c-format.c (printf_length_specs, scanf_length_specs): Add entries for H, D, DD. (print_char_table, scan_char_table): Use new entries. (asm_fprintf_char_table, gcc_diag_char_table, gcc_cdiag_char_table, gcc_cxxdiag_char_table): Adjust for longer length arrays. * defaults.h (DECIMAL32_TYPE_SIZE): Define. (DECIMAL64_TYPE_SIZE): Likewise. (DECIMAL128_TYPE_SIZE): Likewise. (TARGET_DEC_EVAL_METHOD): Likewise. * doc/extend.texi (Decimal Float): New node. (Constructing Calls): Document decimal float built-ins. * doc/tm.texi: Document TARGET_DECIMAL_FLOAT_SUPPORTED_P hook. * Makefile.in (USER_H): Add $(srcdir)/ginclude/decfloat.h. * ginclude/decfloat.h: New file. Co-Authored-By: Ben Elliston Co-Authored-By: Janis Johnson From-SVN: r108629 --- gcc/ginclude/decfloat.h | 108 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 108 insertions(+) create mode 100644 gcc/ginclude/decfloat.h (limited to 'gcc/ginclude') diff --git a/gcc/ginclude/decfloat.h b/gcc/ginclude/decfloat.h new file mode 100644 index 0000000..fbf1346 --- /dev/null +++ b/gcc/ginclude/decfloat.h @@ -0,0 +1,108 @@ +/* Copyright (C) 2005 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, 51 Franklin Street, Fifth Floor, +Boston, MA 02110-1301, USA. */ + +/* As a special exception, if you include this header file into source + files compiled by GCC, this header file does not by itself cause + the resulting executable to be covered by the GNU General Public + License. This exception does not however invalidate any other + reasons why the executable file might be covered by the GNU General + Public License. */ + +/* + * Draft C Extension to support decimal floating-pointing arithmetic: + * Characteristics of decimal floating types + */ + +#ifndef _DECFLOAT_H___ +#define _DECFLOAT_H___ + +/* Number of base-FLT_RADIX digits in the significand, p. */ +#undef DEC32_MANT_DIG +#undef DEC64_MANT_DIG +#undef DEC128_MANT_DIG +#define DEC32_MANT_DIG __DEC32_MANT_DIG__ +#define DEC64_MANT_DIG __DEC64_MANT_DIG__ +#define DEC128_MANT_DIG __DEC128_MANT_DIG__ + +/* Minimum exponent. */ +#undef DEC32_MIN_EXP +#undef DEC64_MIN_EXP +#undef DEC128_MIN_EXP +#define DEC32_MIN_EXP __DEC32_MIN_EXP__ +#define DEC64_MIN_EXP __DEC64_MIN_EXP__ +#define DEC128_MIN_EXP __DEC128_MIN_EXP__ + +/* Maximum exponent. */ +#undef DEC32_MAX_EXP +#undef DEC64_MAX_EXP +#undef DEC128_MAX_EXP +#define DEC32_MAX_EXP __DEC32_MAX_EXP__ +#define DEC64_MAX_EXP __DEC64_MAX_EXP__ +#define DEC128_MAX_EXP __DEC128_MAX_EXP__ + +/* Maximum representable finite decimal floating-point number + (there are 6, 15, and 33 9s after the decimal points respectively). */ +#undef DEC32_MAX +#undef DEC64_MAX +#undef DEC128_MAX +#define DEC32_MAX __DEC32_MAX__ +#define DEC64_MAX __DEC64_MAX__ +#define DEC128_MAX __DEC128_MAX__ + +/* The difference between 1 and the least value greater than 1 that is + representable in the given floating point type. */ +#undef DEC32_EPSILON +#undef DEC64_EPSILON +#undef DEC128_EPSILON +#define DEC32_EPSILON __DEC32_EPSILON__ +#define DEC64_EPSILON __DEC64_EPSILON__ +#define DEC128_EPSILON __DEC128_EPSILON__ + +/* Minimum normalized positive floating-point number. */ +#undef DEC32_MIN +#undef DEC64_MIN +#undef DEC128_MIN +#define DEC32_MIN __DEC32_MIN__ +#define DEC64_MIN __DEC64_MIN__ +#define DEC128_MIN __DEC128_MIN__ + +/* Minimum denormalized positive floating-point number. */ +#undef DEC32_DEN +#undef DEC64_DEN +#undef DEC128_DEN +#define DEC32_DEN __DEC32_MIN__ +#define DEC64_DEN __DEC64_MIN__ +#define DEC128_DEN __DEC128_MIN__ + +/* The floating-point expression evaluation method. + -1 indeterminate + 0 evaluate all operations and constants just to the range and + precision of the type + 1 evaluate operations and constants of type _Decimal32 + and _Decimal64 to the range and precision of the _Decimal64 + type, evaluate _Decimal128 operations and constants to the + range and precision of the _Decimal128 type; + 2 evaluate all operations and constants to the range and + precision of the _Decimal128 type. +*/ + +#undef DECFLT_EVAL_METHOD +#define DECFLT_EVAL_METHOD __DECFLT_EVAL_METHOD__ + +#endif /* _DECFLOAT_H___ */ -- cgit v1.1