| /* Header file for dfp-bit.c. |
| Copyright (C) 2005, 2006 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. |
| |
| 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. */ |
| |
| #ifndef _DFPBIT_H |
| #define _DFPBIT_H |
| |
| #include "tconfig.h" |
| #include "coretypes.h" |
| #include "tm.h" |
| |
| #ifndef LIBGCC2_WORDS_BIG_ENDIAN |
| #define LIBGCC2_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN |
| #endif |
| |
| #ifndef LIBGCC2_FLOAT_WORDS_BIG_ENDIAN |
| #define LIBGCC2_FLOAT_WORDS_BIG_ENDIAN LIBGCC2_WORDS_BIG_ENDIAN |
| #endif |
| |
| #ifndef LIBGCC2_LONG_DOUBLE_TYPE_SIZE |
| #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE LONG_DOUBLE_TYPE_SIZE |
| #endif |
| |
| #ifndef LIBGCC2_HAS_XF_MODE |
| #define LIBGCC2_HAS_XF_MODE \ |
| (BITS_PER_UNIT == 8 && LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 80) |
| #endif |
| |
| /* 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; |
| (eg decimal32) |
| |
| TO_INTERNAL: the name of the decNumber function to convert an |
| encoded value into the decNumber internal representation; |
| |
| TO_ENCODED: the name of the decNumber function to convert an |
| internally represented decNumber into the encoded |
| representation. |
| |
| FROM_STRING: the name of the decNumber function to read an |
| encoded value from a string. |
| |
| TO_STRING: the name of the decNumber function to write an |
| encoded value to a string. */ |
| |
| #if WIDTH == 32 |
| #define DFP_C_TYPE _Decimal32 |
| #define IEEE_TYPE decimal32 |
| #define HOST_TO_IEEE __host_to_ieee_32 |
| #define IEEE_TO_HOST __ieee_to_host_32 |
| #define TO_INTERNAL __decimal32ToNumber |
| #define TO_ENCODED __decimal32FromNumber |
| #define FROM_STRING __decimal32FromString |
| #define TO_STRING __decimal32ToString |
| #elif WIDTH == 64 |
| #define DFP_C_TYPE _Decimal64 |
| #define IEEE_TYPE decimal64 |
| #define HOST_TO_IEEE __host_to_ieee_64 |
| #define IEEE_TO_HOST __ieee_to_host_64 |
| #define TO_INTERNAL __decimal64ToNumber |
| #define TO_ENCODED __decimal64FromNumber |
| #define FROM_STRING __decimal64FromString |
| #define TO_STRING __decimal64ToString |
| #elif WIDTH == 128 |
| #define DFP_C_TYPE _Decimal128 |
| #define IEEE_TYPE decimal128 |
| #define HOST_TO_IEEE __host_to_ieee_128 |
| #define IEEE_TO_HOST __ieee_to_host_128 |
| #define TO_INTERNAL __decimal128ToNumber |
| #define TO_ENCODED __decimal128FromNumber |
| #define FROM_STRING __decimal128FromString |
| #define TO_STRING __decimal128ToString |
| #else |
| #error invalid decimal float word width |
| #endif |
| |
| /* We define __DEC_EVAL_METHOD__ to 2, saying that we evaluate all |
| operations and constants to the range and precision of the _Decimal128 |
| type. Make it so. */ |
| #if WIDTH == 32 |
| #define CONTEXT_INIT DEC_INIT_DECIMAL32 |
| #elif WIDTH == 64 |
| #define CONTEXT_INIT DEC_INIT_DECIMAL64 |
| #elif WIDTH == 128 |
| #define CONTEXT_INIT DEC_INIT_DECIMAL128 |
| #endif |
| |
| /* Define CONTEXT_ROUND to obtain the current decNumber rounding mode. */ |
| extern enum rounding __decGetRound (void); |
| #define CONTEXT_ROUND __decGetRound () |
| |
| extern int __dfp_traps; |
| #define CONTEXT_TRAPS __dfp_traps |
| #define CONTEXT_ERRORS(context) context.status & DEC_Errors |
| extern void __dfp_raise (int); |
| #define DFP_RAISE(A) __dfp_raise(A) |
| |
| /* Conversions between different decimal float types use WIDTH_TO to |
| determine additional macros to define. */ |
| |
| #if defined (L_dd_to_sd) || defined (L_td_to_sd) |
| #define WIDTH_TO 32 |
| #elif defined (L_sd_to_dd) || defined (L_td_to_dd) |
| #define WIDTH_TO 64 |
| #elif defined (L_sd_to_td) || defined (L_dd_to_td) |
| #define WIDTH_TO 128 |
| #endif |
| |
| /* If WIDTH_TO is defined, define additional macros: |
| |
| DFP_C_TYPE_TO: type of the result of dfp to dfp conversion. |
| |
| IEEE_TYPE_TO: the corresponding (encoded) IEEE754R type. |
| |
| TO_ENCODED_TO: the name of the decNumber function to convert an |
| internally represented decNumber into the encoded representation |
| for the destination. */ |
| |
| #if WIDTH_TO == 32 |
| #define DFP_C_TYPE_TO _Decimal32 |
| #define IEEE_TYPE_TO decimal32 |
| #define TO_ENCODED_TO __decimal32FromNumber |
| #define IEEE_TO_HOST_TO __ieee_to_host_32 |
| #elif WIDTH_TO == 64 |
| #define DFP_C_TYPE_TO _Decimal64 |
| #define IEEE_TYPE_TO decimal64 |
| #define TO_ENCODED_TO __decimal64FromNumber |
| #define IEEE_TO_HOST_TO __ieee_to_host_64 |
| #elif WIDTH_TO == 128 |
| #define DFP_C_TYPE_TO _Decimal128 |
| #define IEEE_TYPE_TO decimal128 |
| #define TO_ENCODED_TO __decimal128FromNumber |
| #define IEEE_TO_HOST_TO __ieee_to_host_128 |
| #endif |
| |
| /* Conversions between decimal float types and integral types use INT_KIND |
| to determine the data type and C functions to use. */ |
| |
| #if defined (L_sd_to_si) || defined (L_dd_to_si) || defined (L_td_to_si) \ |
| || defined (L_si_to_sd) || defined (L_si_to_dd) || defined (L_si_to_td) |
| #define INT_KIND 1 |
| #elif defined (L_sd_to_di) || defined (L_dd_to_di) || defined (L_td_to_di) \ |
| || defined (L_di_to_sd) || defined (L_di_to_dd) || defined (L_di_to_td) |
| #define INT_KIND 2 |
| #elif defined (L_sd_to_usi) || defined (L_dd_to_usi) || defined (L_td_to_usi) \ |
| || defined (L_usi_to_sd) || defined (L_usi_to_dd) || defined (L_usi_to_td) |
| #define INT_KIND 3 |
| #elif defined (L_sd_to_udi) || defined (L_dd_to_udi) || defined (L_td_to_udi) \ |
| || defined (L_udi_to_sd) || defined (L_udi_to_dd) || defined (L_udi_to_td) |
| #define INT_KIND 4 |
| #endif |
| |
| /* If INT_KIND is defined, define additional macros: |
| |
| INT_TYPE: The integer data type. |
| |
| INT_FMT: The format string for writing the integer to a string. |
| |
| CAST_FOR_FMT: Cast variable of INT_KIND to C type for sprintf. |
| This works for ILP32 and LP64, won't for other type size systems. |
| |
| STR_TO_INT: The function to read the integer from a string. */ |
| |
| #if INT_KIND == 1 |
| #define INT_TYPE SItype |
| #define INT_FMT "%d" |
| #define CAST_FOR_FMT(A) (int)A |
| #define STR_TO_INT strtol |
| #elif INT_KIND == 2 |
| #define INT_TYPE DItype |
| #define INT_FMT "%lld" |
| #define CAST_FOR_FMT(A) (long long)A |
| #define STR_TO_INT strtoll |
| #elif INT_KIND == 3 |
| #define INT_TYPE USItype |
| #define INT_FMT "%u" |
| #define CAST_FOR_FMT(A) (unsigned int)A |
| #define STR_TO_INT strtoul |
| #elif INT_KIND == 4 |
| #define INT_TYPE UDItype |
| #define INT_FMT "%llu" |
| #define CAST_FOR_FMT(A) (unsigned long long)A |
| #define STR_TO_INT strtoull |
| #endif |
| |
| /* Conversions between decimal float types and binary float types use |
| BFP_KIND to determine the data type and C functions to use. */ |
| |
| #if defined (L_sd_to_sf) || defined (L_dd_to_sf) || defined (L_td_to_sf) \ |
| || defined (L_sf_to_sd) || defined (L_sf_to_dd) || defined (L_sf_to_td) |
| #define BFP_KIND 1 |
| #elif defined (L_sd_to_df) || defined (L_dd_to_df ) || defined (L_td_to_df) \ |
| || defined (L_df_to_sd) || defined (L_df_to_dd) || defined (L_df_to_td) |
| #define BFP_KIND 2 |
| #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 |
| #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. |
| |
| 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 STR_TO_BFP strtof |
| |
| #elif BFP_KIND == 2 |
| #define BFP_TYPE DFtype |
| #define BFP_FMT "%e" |
| #define STR_TO_BFP strtod |
| |
| #elif BFP_KIND == 3 |
| #if LIBGCC2_HAS_XF_MODE |
| /* These aren't used if XF mode is not supported. */ |
| #define BFP_TYPE XFtype |
| #define BFP_FMT "%e" |
| #define BFP_VIA_TYPE double |
| #define STR_TO_BFP strtod |
| #endif |
| |
| #endif /* BFP_KIND */ |
| |
| #if WIDTH == 128 || WIDTH_TO == 128 |
| #include "decimal128.h" |
| #endif |
| #if WIDTH == 64 || WIDTH_TO == 64 |
| #include "decimal64.h" |
| #endif |
| #if WIDTH == 32 || WIDTH_TO == 32 |
| #include "decimal32.h" |
| #endif |
| #include "decNumber.h" |
| |
| /* Names of arithmetic functions. */ |
| |
| #if WIDTH == 32 |
| #define DFP_ADD __addsd3 |
| #define DFP_SUB __subsd3 |
| #define DFP_MULTIPLY __mulsd3 |
| #define DFP_DIVIDE __divsd3 |
| #define DFP_EQ __eqsd2 |
| #define DFP_NE __nesd2 |
| #define DFP_LT __ltsd2 |
| #define DFP_GT __gtsd2 |
| #define DFP_LE __lesd2 |
| #define DFP_GE __gesd2 |
| #define DFP_UNORD __unordsd2 |
| #elif WIDTH == 64 |
| #define DFP_ADD __adddd3 |
| #define DFP_SUB __subdd3 |
| #define DFP_MULTIPLY __muldd3 |
| #define DFP_DIVIDE __divdd3 |
| #define DFP_EQ __eqdd2 |
| #define DFP_NE __nedd2 |
| #define DFP_LT __ltdd2 |
| #define DFP_GT __gtdd2 |
| #define DFP_LE __ledd2 |
| #define DFP_GE __gedd2 |
| #define DFP_UNORD __unorddd2 |
| #elif WIDTH == 128 |
| #define DFP_ADD __addtd3 |
| #define DFP_SUB __subtd3 |
| #define DFP_MULTIPLY __multd3 |
| #define DFP_DIVIDE __divtd3 |
| #define DFP_EQ __eqtd2 |
| #define DFP_NE __netd2 |
| #define DFP_LT __lttd2 |
| #define DFP_GT __gttd2 |
| #define DFP_LE __letd2 |
| #define DFP_GE __getd2 |
| #define DFP_UNORD __unordtd2 |
| #endif |
| |
| /* Names of functions to convert between different decimal float types. */ |
| |
| #if WIDTH == 32 |
| #if WIDTH_TO == 64 |
| #define DFP_TO_DFP __extendsddd2 |
| #elif WIDTH_TO == 128 |
| #define DFP_TO_DFP __extendsdtd2 |
| #endif |
| #elif WIDTH == 64 |
| #if WIDTH_TO == 32 |
| #define DFP_TO_DFP __truncddsd2 |
| #elif WIDTH_TO == 128 |
| #define DFP_TO_DFP __extendddtd2 |
| #endif |
| #elif WIDTH == 128 |
| #if WIDTH_TO == 32 |
| #define DFP_TO_DFP __trunctdsd2 |
| #elif WIDTH_TO == 64 |
| #define DFP_TO_DFP __trunctddd2 |
| #endif |
| #endif |
| |
| /* Names of functions to convert between decimal float and integers. */ |
| |
| #if WIDTH == 32 |
| #if INT_KIND == 1 |
| #define INT_TO_DFP __floatsisd |
| #define DFP_TO_INT __fixsdsi |
| #elif INT_KIND == 2 |
| #define INT_TO_DFP __floatdisd |
| #define DFP_TO_INT __fixsddi |
| #elif INT_KIND == 3 |
| #define INT_TO_DFP __floatunssisd |
| #define DFP_TO_INT __fixunssdsi |
| #elif INT_KIND == 4 |
| #define INT_TO_DFP __floatunsdisd |
| #define DFP_TO_INT __fixunssddi |
| #endif |
| #elif WIDTH == 64 |
| #if INT_KIND == 1 |
| #define INT_TO_DFP __floatsidd |
| #define DFP_TO_INT __fixddsi |
| #elif INT_KIND == 2 |
| #define INT_TO_DFP __floatdidd |
| #define DFP_TO_INT __fixdddi |
| #elif INT_KIND == 3 |
| #define INT_TO_DFP __floatunssidd |
| #define DFP_TO_INT __fixunsddsi |
| #elif INT_KIND == 4 |
| #define INT_TO_DFP __floatunsdidd |
| #define DFP_TO_INT __fixunsdddi |
| #endif |
| #elif WIDTH == 128 |
| #if INT_KIND == 1 |
| #define INT_TO_DFP __floatsitd |
| #define DFP_TO_INT __fixtdsi |
| #elif INT_KIND == 2 |
| #define INT_TO_DFP __floatditd |
| #define DFP_TO_INT __fixtddi |
| #elif INT_KIND == 3 |
| #define INT_TO_DFP __floatunssitd |
| #define DFP_TO_INT __fixunstdsi |
| #elif INT_KIND == 4 |
| #define INT_TO_DFP __floatunsditd |
| #define DFP_TO_INT __fixunstddi |
| #endif |
| #endif |
| |
| /* Names of functions to convert between decimal float and binary float. */ |
| |
| #if WIDTH == 32 |
| #if BFP_KIND == 1 |
| #define BFP_TO_DFP __extendsfsd |
| #define DFP_TO_BFP __truncsdsf |
| #elif BFP_KIND == 2 |
| #define BFP_TO_DFP __truncdfsd |
| #define DFP_TO_BFP __extendsddf |
| #elif BFP_KIND == 3 |
| #define BFP_TO_DFP __truncxfsd |
| #define DFP_TO_BFP __extendsdxf |
| #endif /* BFP_KIND */ |
| |
| #elif WIDTH == 64 |
| #if BFP_KIND == 1 |
| #define BFP_TO_DFP __extendsfdd |
| #define DFP_TO_BFP __truncddsf |
| #elif BFP_KIND == 2 |
| #define BFP_TO_DFP __extenddfdd |
| #define DFP_TO_BFP __truncdddf |
| #elif BFP_KIND == 3 |
| #define BFP_TO_DFP __truncxfdd |
| #define DFP_TO_BFP __extendddxf |
| #endif /* BFP_KIND */ |
| |
| #elif WIDTH == 128 |
| #if BFP_KIND == 1 |
| #define BFP_TO_DFP __extendsftd |
| #define DFP_TO_BFP __trunctdsf |
| #elif BFP_KIND == 2 |
| #define BFP_TO_DFP __extenddftd |
| #define DFP_TO_BFP __trunctddf |
| #elif BFP_KIND == 3 |
| #define BFP_TO_DFP __extendxftd |
| #define DFP_TO_BFP __trunctdxf |
| #endif /* BFP_KIND */ |
| |
| #endif /* WIDTH */ |
| |
| /* Some handy typedefs. */ |
| |
| typedef float SFtype __attribute__ ((mode (SF))); |
| typedef float DFtype __attribute__ ((mode (DF))); |
| #if LIBGCC2_HAS_XF_MODE |
| typedef float XFtype __attribute__ ((mode (XF))); |
| #endif /* LIBGCC2_HAS_XF_MODE */ |
| |
| typedef int SItype __attribute__ ((mode (SI))); |
| typedef int DItype __attribute__ ((mode (DI))); |
| typedef unsigned int USItype __attribute__ ((mode (SI))); |
| typedef unsigned int UDItype __attribute__ ((mode (DI))); |
| |
| /* The type of the result of a decimal float comparison. This must |
| match `word_mode' in GCC for the target. */ |
| |
| typedef int CMPtype __attribute__ ((mode (word))); |
| |
| /* Prototypes. */ |
| |
| #if defined (L_mul_sd) || defined (L_mul_dd) || defined (L_mul_td) |
| extern DFP_C_TYPE DFP_MULTIPLY (DFP_C_TYPE, DFP_C_TYPE); |
| #endif |
| |
| #if defined (L_div_sd) || defined (L_div_dd) || defined (L_div_td) |
| extern DFP_C_TYPE DFP_DIVIDE (DFP_C_TYPE, DFP_C_TYPE); |
| #endif |
| |
| #if defined (L_addsub_sd) || defined (L_addsub_dd) || defined (L_addsub_td) |
| extern DFP_C_TYPE DFP_ADD (DFP_C_TYPE, DFP_C_TYPE); |
| extern DFP_C_TYPE DFP_SUB (DFP_C_TYPE, DFP_C_TYPE); |
| #endif |
| |
| #if defined (L_eq_sd) || defined (L_eq_dd) || defined (L_eq_td) |
| extern CMPtype DFP_EQ (DFP_C_TYPE, DFP_C_TYPE); |
| #endif |
| |
| #if defined (L_ne_sd) || defined (L_ne_dd) || defined (L_ne_td) |
| extern CMPtype DFP_NE (DFP_C_TYPE, DFP_C_TYPE); |
| #endif |
| |
| #if defined (L_lt_sd) || defined (L_lt_dd) || defined (L_lt_td) |
| extern CMPtype DFP_LT (DFP_C_TYPE, DFP_C_TYPE); |
| #endif |
| |
| #if defined (L_gt_sd) || defined (L_gt_dd) || defined (L_gt_td) |
| extern CMPtype DFP_GT (DFP_C_TYPE, DFP_C_TYPE); |
| #endif |
| |
| #if defined (L_le_sd) || defined (L_le_dd) || defined (L_le_td) |
| extern CMPtype DFP_LE (DFP_C_TYPE, DFP_C_TYPE); |
| #endif |
| |
| #if defined (L_ge_sd) || defined (L_ge_dd) || defined (L_ge_td) |
| extern CMPtype DFP_GE (DFP_C_TYPE, DFP_C_TYPE); |
| #endif |
| |
| #if defined (L_unord_sd) || defined (L_unord_dd) || defined (L_unord_td) |
| extern CMPtype DFP_UNORD (DFP_C_TYPE, DFP_C_TYPE); |
| #endif |
| |
| #if defined (L_sd_to_dd) || defined (L_sd_to_td) || defined (L_dd_to_sd) \ |
| || defined (L_dd_to_td) || defined (L_td_to_sd) || defined (L_td_to_dd) |
| extern DFP_C_TYPE_TO DFP_TO_DFP (DFP_C_TYPE); |
| #endif |
| |
| #if defined (L_sd_to_si) || defined (L_dd_to_si) || defined (L_td_to_si) \ |
| || defined (L_sd_to_di) || defined (L_dd_to_di) || defined (L_td_to_di) \ |
| || defined (L_sd_to_usi) || defined (L_dd_to_usi) || defined (L_td_to_usi) \ |
| || defined (L_sd_to_udi) || defined (L_dd_to_udi) || defined (L_td_to_udi) |
| extern INT_TYPE DFP_TO_INT (DFP_C_TYPE); |
| #endif |
| |
| #if defined (L_si_to_sd) || defined (L_si_to_dd) || defined (L_si_to_td) \ |
| || defined (L_di_to_sd) || defined (L_di_to_dd) || defined (L_di_to_td) \ |
| || defined (L_usi_to_sd) || defined (L_usi_to_dd) || defined (L_usi_to_td) \ |
| || defined (L_udi_to_sd) || defined (L_udi_to_dd) || defined (L_udi_to_td) |
| extern DFP_C_TYPE INT_TO_DFP (INT_TYPE); |
| #endif |
| |
| #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) |
| 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) |
| extern DFP_C_TYPE BFP_TO_DFP (BFP_TYPE); |
| #endif |
| |
| #endif /* _DFPBIT_H */ |
