// © 2016 and later: Unicode, Inc. and others. // License & terms of use: http://www.unicode.org/copyright.html /* ------------------------------------------------------------------ */ /* Decimal Context module header */ /* ------------------------------------------------------------------ */ /* Copyright (c) IBM Corporation, 2000-2011. All rights reserved. */ /* */ /* This software is made available under the terms of the */ /* ICU License -- ICU 1.8.1 and later. */ /* */ /* The description and User's Guide ("The decNumber C Library") for */ /* this software is called decNumber.pdf. This document is */ /* available, together with arithmetic and format specifications, */ /* testcases, and Web links, on the General Decimal Arithmetic page. */ /* */ /* Please send comments, suggestions, and corrections to the author: */ /* [email protected] */ /* Mike Cowlishaw, IBM Fellow */ /* IBM UK, PO Box 31, Birmingham Road, Warwick CV34 5JL, UK */ /* ------------------------------------------------------------------ */ /* Modified version, for use from within ICU. * Renamed public functions, to avoid an unwanted export of the * standard names from the ICU library. * * Use ICU's uprv_malloc() and uprv_free() * * Revert comment syntax to plain C * * Remove a few compiler warnings. */ #include "unicode/utypes.h" #include "putilimp.h" /* */ /* Context variables must always have valid values: */ /* */ /* status -- [any bits may be cleared, but not set, by user] */ /* round -- must be one of the enumerated rounding modes */ /* */ /* The following variables are implied for fixed size formats (i.e., */ /* they are ignored) but should still be set correctly in case used */ /* with decNumber functions: */ /* */ /* clamp -- must be either 0 or 1 */ /* digits -- must be in the range 1 through 999999999 */ /* emax -- must be in the range 0 through 999999999 */ /* emin -- must be in the range 0 through -999999999 */ /* extended -- must be either 0 or 1 [present only if DECSUBSET] */ /* traps -- only defined bits may be set */ /* */ /* ------------------------------------------------------------------ */ #if !defined(DECCONTEXT) #define DECCONTEXT #define DECCNAME … #define DECCFULLNAME … #define DECCAUTHOR … #if !defined(int32_t) /* #include <stdint.h> */ /* C99 standard integers */ #endif #include <stdio.h> /* for printf, etc. */ #include <signal.h> /* for traps */ /* Extended flags setting -- set this to 0 to use only IEEE flags */ #if !defined(DECEXTFLAG) #define DECEXTFLAG … #endif /* Conditional code flag -- set this to 0 for best performance */ #if !defined(DECSUBSET) #define DECSUBSET … #endif /* Context for operations, with associated constants */ enum rounding { … }; #define DEC_ROUND_DEFAULT … decContext; /* Maxima and Minima for context settings */ #define DEC_MAX_DIGITS … #define DEC_MIN_DIGITS … #define DEC_MAX_EMAX … #define DEC_MIN_EMAX … #define DEC_MAX_EMIN … #define DEC_MIN_EMIN … #define DEC_MAX_MATH … /* Classifications for decimal numbers, aligned with 754 (note that */ /* 'normal' and 'subnormal' are meaningful only with a decContext */ /* or a fixed size format). */ enum decClass { … }; /* Strings for the decClasses */ #define DEC_ClassString_SN … #define DEC_ClassString_QN … #define DEC_ClassString_NI … #define DEC_ClassString_NN … #define DEC_ClassString_NS … #define DEC_ClassString_NZ … #define DEC_ClassString_PZ … #define DEC_ClassString_PS … #define DEC_ClassString_PN … #define DEC_ClassString_PI … #define DEC_ClassString_UN … /* Trap-enabler and Status flags (exceptional conditions), and */ /* their names. The top byte is reserved for internal use */ #if DECEXTFLAG /* Extended flags */ #define DEC_Conversion_syntax … #define DEC_Division_by_zero … #define DEC_Division_impossible … #define DEC_Division_undefined … #define DEC_Insufficient_storage … #define DEC_Inexact … #define DEC_Invalid_context … #define DEC_Invalid_operation … #if DECSUBSET #define DEC_Lost_digits … #endif #define DEC_Overflow … #define DEC_Clamped … #define DEC_Rounded … #define DEC_Subnormal … #define DEC_Underflow … #else /* IEEE flags only */ #define DEC_Conversion_syntax … #define DEC_Division_by_zero … #define DEC_Division_impossible … #define DEC_Division_undefined … #define DEC_Insufficient_storage … #define DEC_Inexact … #define DEC_Invalid_context … #define DEC_Invalid_operation … #if DECSUBSET #define DEC_Lost_digits … #endif #define DEC_Overflow … #define DEC_Clamped … #define DEC_Rounded … #define DEC_Subnormal … #define DEC_Underflow … #endif /* IEEE 754 groupings for the flags */ /* [DEC_Clamped, DEC_Lost_digits, DEC_Rounded, and DEC_Subnormal */ /* are not in IEEE 754] */ #define DEC_IEEE_754_Division_by_zero … #if DECSUBSET #define DEC_IEEE_754_Inexact … #else #define DEC_IEEE_754_Inexact … #endif #define DEC_IEEE_754_Invalid_operation … #define DEC_IEEE_754_Overflow … #define DEC_IEEE_754_Underflow … /* flags which are normally errors (result is qNaN, infinite, or 0) */ #define DEC_Errors … /* flags which cause a result to become qNaN */ #define DEC_NaNs … /* flags which are normally for information only (finite results) */ #if DECSUBSET #define DEC_Information … #else #define DEC_Information … #endif /* IEEE 854 names (for compatibility with older decNumber versions) */ #define DEC_IEEE_854_Division_by_zero … #define DEC_IEEE_854_Inexact … #define DEC_IEEE_854_Invalid_operation … #define DEC_IEEE_854_Overflow … #define DEC_IEEE_854_Underflow … /* Name strings for the exceptional conditions */ #define DEC_Condition_CS … #define DEC_Condition_DZ … #define DEC_Condition_DI … #define DEC_Condition_DU … #define DEC_Condition_IE … #define DEC_Condition_IS … #define DEC_Condition_IC … #define DEC_Condition_IO … #if DECSUBSET #define DEC_Condition_LD … #endif #define DEC_Condition_OV … #define DEC_Condition_PA … #define DEC_Condition_RO … #define DEC_Condition_SU … #define DEC_Condition_UN … #define DEC_Condition_ZE … #define DEC_Condition_MU … #define DEC_Condition_Length … /* including terminator */ /* Initialization descriptors, used by decContextDefault */ #define DEC_INIT_BASE … #define DEC_INIT_DECIMAL32 … #define DEC_INIT_DECIMAL64 … #define DEC_INIT_DECIMAL128 … /* Synonyms */ #define DEC_INIT_DECSINGLE … #define DEC_INIT_DECDOUBLE … #define DEC_INIT_DECQUAD … /* decContext routines */ U_CAPI decContext * U_EXPORT2 uprv_decContextClearStatus(decContext *, uint32_t); U_CAPI decContext * U_EXPORT2 uprv_decContextDefault(decContext *, int32_t); U_CAPI enum rounding U_EXPORT2 uprv_decContextGetRounding(decContext *); U_CAPI uint32_t U_EXPORT2 uprv_decContextGetStatus(decContext *); U_CAPI decContext * U_EXPORT2 uprv_decContextRestoreStatus(decContext *, uint32_t, uint32_t); U_CAPI uint32_t U_EXPORT2 uprv_decContextSaveStatus(decContext *, uint32_t); U_CAPI decContext * U_EXPORT2 uprv_decContextSetRounding(decContext *, enum rounding); U_CAPI decContext * U_EXPORT2 uprv_decContextSetStatus(decContext *, uint32_t); U_CAPI decContext * U_EXPORT2 uprv_decContextSetStatusFromString(decContext *, const char *); U_CAPI decContext * U_EXPORT2 uprv_decContextSetStatusFromStringQuiet(decContext *, const char *); U_CAPI decContext * U_EXPORT2 uprv_decContextSetStatusQuiet(decContext *, uint32_t); U_CAPI const char * U_EXPORT2 uprv_decContextStatusToString(const decContext *); U_CAPI uint32_t U_EXPORT2 uprv_decContextTestSavedStatus(uint32_t, uint32_t); U_CAPI uint32_t U_EXPORT2 uprv_decContextTestStatus(decContext *, uint32_t); U_CAPI decContext * U_EXPORT2 uprv_decContextZeroStatus(decContext *); #endif
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