/* Header file for dfp-bit.c.
- Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
+ Copyright (C) 2005, 2006, 2007, 2008, 2009 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
+Software Foundation; either version 3, or (at your option) any later
version.
-In addition to the permissions in the GNU General Public License, the
-Free Software Foundation gives you unlimited permission to link the
-compiled version of this file into combinations with other programs,
-and to distribute those combinations without any restriction coming
-from the use of this file. (The General Public License restrictions
-do apply in other respects; for example, they cover modification of
-the file, and distribution when not linked into a combine
-executable.)
-
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. */
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+<http://www.gnu.org/licenses/>. */
#ifndef _DFPBIT_H
#define _DFPBIT_H
+#include <float.h>
#include <fenv.h>
#include <decRound.h>
#include <decExcept.h>
#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE LONG_DOUBLE_TYPE_SIZE
#endif
-#ifndef LIBGCC2_HAS_XF_MODE
-#define LIBGCC2_HAS_XF_MODE \
+/* We need to know the size of long double that the C library supports.
+ Don't use LIBGCC2_HAS_XF_MODE or LIBGCC2_HAS_TF_MODE here because
+ some targets set both of those. */
+
+#define LONG_DOUBLE_HAS_XF_MODE \
(BITS_PER_UNIT == 8 && LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 80)
-#endif
+
+#define LONG_DOUBLE_HAS_TF_MODE \
+ (BITS_PER_UNIT == 8 && LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 128)
/* Depending on WIDTH, define a number of macros:
DFP_C_TYPE: type of the arguments to the libgcc functions;
(eg _Decimal32)
- IEEE_TYPE: the corresponding (encoded) IEEE754R type;
+ IEEE_TYPE: the corresponding (encoded) IEEE754 type;
(eg decimal32)
TO_INTERNAL: the name of the decNumber function to convert an
DFP_C_TYPE_TO: type of the result of dfp to dfp conversion.
- IEEE_TYPE_TO: the corresponding (encoded) IEEE754R type.
+ IEEE_TYPE_TO: the corresponding (encoded) IEEE754 type.
TO_ENCODED_TO: the name of the decNumber function to convert an
internally represented decNumber into the encoded representation
#elif defined (L_sd_to_xf) || defined (L_dd_to_xf ) || defined (L_td_to_xf) \
|| defined (L_xf_to_sd) || defined (L_xf_to_dd) || defined (L_xf_to_td)
#define BFP_KIND 3
+#elif defined (L_sd_to_tf) || defined (L_dd_to_tf) || defined (L_td_to_tf) \
+ || defined (L_tf_to_sd) || defined (L_tf_to_dd) || defined (L_tf_to_td)
+#define BFP_KIND 4
#endif
/* If BFP_KIND is defined, define additional macros:
BFP_TYPE: The binary floating point data type.
BFP_FMT: The format string for writing the value to a string.
+ The number of decimal digits printed is
+ ceil (nbits / log2 (10.) + 1)
+ as described in David Matula's CACM 19(3) 716-723 June 1968 paper.
+ BFP_VIA_TYPE: Type to which to cast a variable of BPF_TYPE for a
+ call to sprintf.
+
STR_TO_BFP: The function to read the value from a string. */
#if BFP_KIND == 1
-/* strtof is declared in <stdlib.h> only for C99. */
-extern float strtof (const char *, char **);
#define BFP_TYPE SFtype
-#define BFP_FMT "%e"
+#define BFP_FMT "%.9e"
+#define BFP_VIA_TYPE double
#define STR_TO_BFP strtof
#elif BFP_KIND == 2
#define BFP_TYPE DFtype
-#define BFP_FMT "%e"
+#define BFP_FMT "%.17e"
+#define BFP_VIA_TYPE double
#define STR_TO_BFP strtod
#elif BFP_KIND == 3
-#if LIBGCC2_HAS_XF_MODE
-/* These aren't used if XF mode is not supported. */
+#if LONG_DOUBLE_HAS_XF_MODE
#define BFP_TYPE XFtype
-#define BFP_FMT "%e"
-#define BFP_VIA_TYPE double
-#define STR_TO_BFP strtod
-#endif
+#define BFP_FMT "%.21Le"
+#define BFP_VIA_TYPE long double
+#define STR_TO_BFP strtold
+#endif /* LONG_DOUBLE_HAS_XF_MODE */
+
+#elif BFP_KIND == 4
+#if LONG_DOUBLE_HAS_TF_MODE
+#define BFP_TYPE TFtype
+#if LDBL_MANT_DIG == 106
+#define BFP_FMT "%.33Le"
+#elif LDBL_MANT_DIG == 113
+#define BFP_FMT "%.36Le"
+#else
+#error "unknown long double size, cannot define BFP_FMT"
+#endif /* LDBL_MANT_DIG */
+#define STR_TO_BFP strtold
+#define BFP_VIA_TYPE long double
+#endif /* LONG_DOUBLE_HAS_TF_MODE */
#endif /* BFP_KIND */
#if WIDTH == 128 || WIDTH_TO == 128
#include "decimal128.h"
+#include "decQuad.h"
#endif
#if WIDTH == 64 || WIDTH_TO == 64
#include "decimal64.h"
+#include "decDouble.h"
#endif
#if WIDTH == 32 || WIDTH_TO == 32
#include "decimal32.h"
+#include "decSingle.h"
#endif
#include "decNumber.h"
#define DFP_UNORD DPD_BID_NAME(__dpd_unordtd2,__bid_unordtd2)
#endif
+/* Names of decNumber functions for DPD arithmetic. */
+
+#if WIDTH == 32
+#define decFloat decDouble
+#define DFP_BINARY_OP d32_binary_op
+#define DFP_COMPARE_OP d32_compare_op
+#define DEC_FLOAT_ADD decDoubleAdd
+#define DEC_FLOAT_SUBTRACT decDoubleSubtract
+#define DEC_FLOAT_MULTIPLY decDoubleMultiply
+#define DEC_FLOAT_DIVIDE decDoubleDivide
+#define DEC_FLOAT_COMPARE decDoubleCompare
+#define DEC_FLOAT_IS_ZERO decDoubleIsZero
+#define DEC_FLOAT_IS_NAN decDoubleIsNaN
+#define DEC_FLOAT_IS_SIGNED decDoubleIsSigned
+#elif WIDTH == 64
+#define DFP_BINARY_OP dnn_binary_op
+#define DFP_COMPARE_OP dnn_compare_op
+#define decFloat decDouble
+#define DEC_FLOAT_ADD decDoubleAdd
+#define DEC_FLOAT_SUBTRACT decDoubleSubtract
+#define DEC_FLOAT_MULTIPLY decDoubleMultiply
+#define DEC_FLOAT_DIVIDE decDoubleDivide
+#define DEC_FLOAT_COMPARE decDoubleCompare
+#define DEC_FLOAT_IS_ZERO decDoubleIsZero
+#define DEC_FLOAT_IS_NAN decDoubleIsNaN
+#define DEC_FLOAT_IS_SIGNED decDoubleIsSigned
+#elif WIDTH == 128
+#define DFP_BINARY_OP dnn_binary_op
+#define DFP_COMPARE_OP dnn_compare_op
+#define decFloat decQuad
+#define DEC_FLOAT_ADD decQuadAdd
+#define DEC_FLOAT_SUBTRACT decQuadSubtract
+#define DEC_FLOAT_MULTIPLY decQuadMultiply
+#define DEC_FLOAT_DIVIDE decQuadDivide
+#define DEC_FLOAT_COMPARE decQuadCompare
+#define DEC_FLOAT_IS_ZERO decQuadIsZero
+#define DEC_FLOAT_IS_NAN decQuadIsNaN
+#define DEC_FLOAT_IS_SIGNED decQuadIsSigned
+#endif
+
/* Names of functions to convert between different decimal float types. */
#if WIDTH == 32
#if INT_KIND == 1
#define INT_TO_DFP DPD_BID_NAME(__dpd_floatsisd,__bid_floatsisd)
#define DFP_TO_INT DPD_BID_NAME(__dpd_fixsdsi,__bid_fixsdsi)
+#define DEC_FLOAT_FROM_INT decDoubleFromInt32
+#define DEC_FLOAT_TO_INT decDoubleToInt32
#elif INT_KIND == 2
#define INT_TO_DFP DPD_BID_NAME(__dpd_floatdisd,__bid_floatdisd)
#define DFP_TO_INT DPD_BID_NAME(__dpd_fixsddi,__bid_fixsddi)
#elif INT_KIND == 3
#define INT_TO_DFP DPD_BID_NAME(__dpd_floatunssisd,__bid_floatunssisd)
#define DFP_TO_INT DPD_BID_NAME(__dpd_fixunssdsi,__bid_fixunssdsi)
+#define DEC_FLOAT_FROM_INT decDoubleFromUInt32
+#define DEC_FLOAT_TO_INT decDoubleToUInt32
#elif INT_KIND == 4
#define INT_TO_DFP DPD_BID_NAME(__dpd_floatunsdisd,__bid_floatunsdisd)
#define DFP_TO_INT DPD_BID_NAME(__dpd_fixunssddi,__bid_fixunssddi)
#endif
#elif WIDTH == 64
+#define decFloat decDouble
#if INT_KIND == 1
#define INT_TO_DFP DPD_BID_NAME(__dpd_floatsidd,__bid_floatsidd)
#define DFP_TO_INT DPD_BID_NAME(__dpd_fixddsi,__bid_fixddsi)
+#define DEC_FLOAT_FROM_INT decDoubleFromInt32
+#define DEC_FLOAT_TO_INT decDoubleToInt32
#elif INT_KIND == 2
#define INT_TO_DFP DPD_BID_NAME(__dpd_floatdidd,__bid_floatdidd)
#define DFP_TO_INT DPD_BID_NAME(__dpd_fixdddi,__bid_fixdddi)
#elif INT_KIND == 3
#define INT_TO_DFP DPD_BID_NAME(__dpd_floatunssidd,__bid_floatunssidd)
#define DFP_TO_INT DPD_BID_NAME(__dpd_fixunsddsi,__bid_fixunsddsi)
+#define DEC_FLOAT_FROM_INT decDoubleFromUInt32
+#define DEC_FLOAT_TO_INT decDoubleToUInt32
#elif INT_KIND == 4
#define INT_TO_DFP DPD_BID_NAME(__dpd_floatunsdidd,__bid_floatunsdidd)
#define DFP_TO_INT DPD_BID_NAME(__dpd_fixunsdddi,__bid_fixunsdddi)
#endif
#elif WIDTH == 128
+#define decFloat decQuad
#if INT_KIND == 1
#define INT_TO_DFP DPD_BID_NAME(__dpd_floatsitd,__bid_floatsitd)
#define DFP_TO_INT DPD_BID_NAME(__dpd_fixtdsi,__bid_fixtdsi)
+#define DEC_FLOAT_FROM_INT decQuadFromInt32
+#define DEC_FLOAT_TO_INT decQuadToInt32
#elif INT_KIND == 2
#define INT_TO_DFP DPD_BID_NAME(__dpd_floatditd,__bid_floatditd)
#define DFP_TO_INT DPD_BID_NAME(__dpd_fixtddi,__bid_fixtddi)
#elif INT_KIND == 3
#define INT_TO_DFP DPD_BID_NAME(__dpd_floatunssitd,__bid_floatunssitd)
#define DFP_TO_INT DPD_BID_NAME(__dpd_fixunstdsi,__bid_fixunstdsi)
+#define DEC_FLOAT_FROM_INT decQuadFromUInt32
+#define DEC_FLOAT_TO_INT decQuadToUInt32
#elif INT_KIND == 4
#define INT_TO_DFP DPD_BID_NAME(__dpd_floatunsditd,__bid_floatunsditd)
#define DFP_TO_INT DPD_BID_NAME(__dpd_fixunstddi,__bid_fixunstddi)
#elif BFP_KIND == 3
#define BFP_TO_DFP DPD_BID_NAME(__dpd_truncxfsd,__bid_truncxfsd)
#define DFP_TO_BFP DPD_BID_NAME(__dpd_extendsdxf,__bid_extendsdxf)
+#elif BFP_KIND == 4
+#define BFP_TO_DFP DPD_BID_NAME(__dpd_trunctfsd,__bid_trunctfsd)
+#define DFP_TO_BFP DPD_BID_NAME(__dpd_extendsdtf,__bid_extendsdtf)
#endif /* BFP_KIND */
#elif WIDTH == 64
#elif BFP_KIND == 3
#define BFP_TO_DFP DPD_BID_NAME(__dpd_truncxfdd,__bid_truncxfdd)
#define DFP_TO_BFP DPD_BID_NAME(__dpd_extendddxf,__bid_extendddxf)
+#elif BFP_KIND == 4
+#define BFP_TO_DFP DPD_BID_NAME(__dpd_trunctfdd,__bid_trunctfdd)
+#define DFP_TO_BFP DPD_BID_NAME(__dpd_extendddtf,__bid_extendddtf)
#endif /* BFP_KIND */
#elif WIDTH == 128
#elif BFP_KIND == 3
#define BFP_TO_DFP DPD_BID_NAME(__dpd_extendxftd,__bid_extendxftd)
#define DFP_TO_BFP DPD_BID_NAME(__dpd_trunctdxf,__bid_trunctdxf)
+#elif BFP_KIND == 4
+#define BFP_TO_DFP DPD_BID_NAME(__dpd_extendtftd,__bid_extendtftd)
+#define DFP_TO_BFP DPD_BID_NAME(__dpd_trunctdtf,__bid_trunctdtf)
#endif /* BFP_KIND */
#endif /* WIDTH */
typedef float SFtype __attribute__ ((mode (SF)));
typedef float DFtype __attribute__ ((mode (DF)));
-#if LIBGCC2_HAS_XF_MODE
+#if LONG_DOUBLE_HAS_XF_MODE
typedef float XFtype __attribute__ ((mode (XF)));
-#endif /* LIBGCC2_HAS_XF_MODE */
+#endif /* LONG_DOUBLE_HAS_XF_MODE */
+#if LONG_DOUBLE_HAS_TF_MODE
+typedef float TFtype __attribute__ ((mode (TF)));
+#endif /* LONG_DOUBLE_HAS_TF_MODE */
typedef int SItype __attribute__ ((mode (SI)));
typedef int DItype __attribute__ ((mode (DI)));
#if defined (L_sd_to_sf) || defined (L_dd_to_sf) || defined (L_td_to_sf) \
|| defined (L_sd_to_df) || defined (L_dd_to_df) || defined (L_td_to_df) \
|| ((defined (L_sd_to_xf) || defined (L_dd_to_xf) || defined (L_td_to_xf)) \
- && LIBGCC2_HAS_XF_MODE)
+ && LONG_DOUBLE_HAS_XF_MODE) \
+ || ((defined (L_sd_to_tf) || defined (L_dd_to_tf) || defined (L_td_to_tf)) \
+ && LONG_DOUBLE_HAS_TF_MODE)
extern BFP_TYPE DFP_TO_BFP (DFP_C_TYPE);
#endif
#if defined (L_sf_to_sd) || defined (L_sf_to_dd) || defined (L_sf_to_td) \
|| defined (L_df_to_sd) || defined (L_df_to_dd) || defined (L_df_to_td) \
|| ((defined (L_xf_to_sd) || defined (L_xf_to_dd) || defined (L_xf_to_td)) \
- && LIBGCC2_HAS_XF_MODE)
+ && LONG_DOUBLE_HAS_XF_MODE) \
+ || ((defined (L_tf_to_sd) || defined (L_tf_to_dd) || defined (L_tf_to_td)) \
+ && LONG_DOUBLE_HAS_TF_MODE)
extern DFP_C_TYPE BFP_TO_DFP (BFP_TYPE);
#endif
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