diff options
Diffstat (limited to 'libdecnumber/decQuad.h')
| -rw-r--r-- | libdecnumber/decQuad.h | 49 |
1 files changed, 26 insertions, 23 deletions
diff --git a/libdecnumber/decQuad.h b/libdecnumber/decQuad.h index af9bc24e265..80f5eef4958 100644 --- a/libdecnumber/decQuad.h +++ b/libdecnumber/decQuad.h @@ -31,27 +31,25 @@ /* ------------------------------------------------------------------ */ /* decQuad.h -- Decimal 128-bit format module header */ /* ------------------------------------------------------------------ */ -/* Please see decFloats.h for an overview and documentation details. */ -/* ------------------------------------------------------------------ */ /* This include file is always included by decSingle and decDouble, */ -/* and therefore also holds useful constants used by all three. */ +/* and therefore also holds useful constants used by all three. */ #if !defined(DECQUAD) #define DECQUAD #define DECQUADNAME "decimalQuad" /* Short name */ #define DECQUADTITLE "Decimal 128-bit datum" /* Verbose name */ - #define DECQUADAUTHOR "Mike Cowlishaw" /* Who to blame */ + #define DECQUADAUTHOR "Mike Cowlishaw" /* Who to blame */ /* parameters for decQuads */ - #define DECQUAD_Bytes 16 /* length */ + #define DECQUAD_Bytes 16 /* length */ #define DECQUAD_Pmax 34 /* maximum precision (digits) */ - #define DECQUAD_Emin -6143 /* minimum adjusted exponent */ - #define DECQUAD_Emax 6144 /* maximum adjusted exponent */ - #define DECQUAD_EmaxD 4 /* maximum exponent digits */ + #define DECQUAD_Emin -6143 /* minimum adjusted exponent */ + #define DECQUAD_Emax 6144 /* maximum adjusted exponent */ + #define DECQUAD_EmaxD 4 /* maximum exponent digits */ #define DECQUAD_Bias 6176 /* bias for the exponent */ - #define DECQUAD_String 43 /* maximum string length, +1 */ - #define DECQUAD_EconL 12 /* exponent continuation length */ + #define DECQUAD_String 43 /* maximum string length, +1 */ + #define DECQUAD_EconL 12 /* exponent continuation length */ #define DECQUAD_Declets 11 /* count of declets */ /* highest biased exponent (Elimit-1) */ #define DECQUAD_Ehigh (DECQUAD_Emax + DECQUAD_Bias - (DECQUAD_Pmax-1)) @@ -59,11 +57,14 @@ /* Required include */ #include "decContext.h" - /* The decQuad decimal 128-bit type, accessible by various types */ + /* The decQuad decimal 128-bit type, accessible by all sizes */ typedef union { - uint8_t bytes[DECQUAD_Bytes]; /* fields: 1, 5, 12, 110 bits */ + uint8_t bytes[DECQUAD_Bytes]; /* fields: 1, 5, 12, 110 bits */ uint16_t shorts[DECQUAD_Bytes/2]; - uint32_t words[DECQUAD_Bytes/4]; + uint32_t words[DECQUAD_Bytes/4]; + #if DECUSE64 + uint64_t longs[DECQUAD_Bytes/8]; + #endif } decQuad; /* ---------------------------------------------------------------- */ @@ -72,21 +73,21 @@ /* sign and special values [top 32-bits; last two bits are don't-care for Infinity on input, last bit don't-care for NaNs] */ - #define DECFLOAT_Sign 0x80000000 /* 1 00000 00 Sign */ + #define DECFLOAT_Sign 0x80000000 /* 1 00000 00 Sign */ #define DECFLOAT_NaN 0x7c000000 /* 0 11111 00 NaN generic */ - #define DECFLOAT_qNaN 0x7c000000 /* 0 11111 00 qNaN */ - #define DECFLOAT_sNaN 0x7e000000 /* 0 11111 10 sNaN */ + #define DECFLOAT_qNaN 0x7c000000 /* 0 11111 00 qNaN */ + #define DECFLOAT_sNaN 0x7e000000 /* 0 11111 10 sNaN */ #define DECFLOAT_Inf 0x78000000 /* 0 11110 00 Infinity */ #define DECFLOAT_MinSp 0x78000000 /* minimum special value */ /* [specials are all >=MinSp] */ /* Sign nibble constants */ #if !defined(DECPPLUSALT) - #define DECPPLUSALT 0x0A /* alternate plus nibble */ - #define DECPMINUSALT 0x0B /* alternate minus nibble */ - #define DECPPLUS 0x0C /* preferred plus nibble */ - #define DECPMINUS 0x0D /* preferred minus nibble */ - #define DECPPLUSALT2 0x0E /* alternate plus nibble */ - #define DECPUNSIGNED 0x0F /* alternate plus nibble (unsigned) */ + #define DECPPLUSALT 0x0A /* alternate plus nibble */ + #define DECPMINUSALT 0x0B /* alternate minus nibble */ + #define DECPPLUS 0x0C /* preferred plus nibble */ + #define DECPMINUS 0x0D /* preferred minus nibble */ + #define DECPPLUSALT2 0x0E /* alternate plus nibble */ + #define DECPUNSIGNED 0x0F /* alternate plus nibble (unsigned) */ #endif /* ---------------------------------------------------------------- */ @@ -99,6 +100,7 @@ extern decQuad * decQuadFromBCD(decQuad *, int32_t, const uint8_t *, int32_t); extern decQuad * decQuadFromInt32(decQuad *, int32_t); extern decQuad * decQuadFromPacked(decQuad *, int32_t, const uint8_t *); + extern decQuad * decQuadFromPackedChecked(decQuad *, int32_t, const uint8_t *); extern decQuad * decQuadFromString(decQuad *, const char *, decContext *); extern decQuad * decQuadFromUInt32(decQuad *, uint32_t); extern int32_t decQuadGetCoefficient(const decQuad *, uint8_t *); @@ -182,7 +184,8 @@ /* decNumber conversions; these are implemented as macros so as not */ /* to force a dependency on decimal128 and decNumber in decQuad. */ + /* decQuadFromNumber returns a decimal128 * to avoid warnings. */ #define decQuadToNumber(dq, dn) decimal128ToNumber((decimal128 *)(dq), dn) - #define decQuadFromNumber(dq, dn, set) (decQuad *)decimal128FromNumber((decimal128 *)(dq), dn, set) + #define decQuadFromNumber(dq, dn, set) decimal128FromNumber((decimal128 *)(dq), dn, set) #endif |