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authorDJ Delorie <dj@redhat.com>2009-03-30 00:01:29 +0000
committerDJ Delorie <dj@redhat.com>2009-03-30 00:01:29 +0000
commitf2be950300e01d47ae4f41fb7481c26319d33d81 (patch)
treeb8e1601a34c5f16ac401608e1a85a3091254543a /libdecnumber/decQuad.h
parent4104b747d5a0457c0dd5236796c6b8efafa70bd0 (diff)
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merge from gcc
Diffstat (limited to 'libdecnumber/decQuad.h')
-rw-r--r--libdecnumber/decQuad.h49
1 files changed, 23 insertions, 26 deletions
diff --git a/libdecnumber/decQuad.h b/libdecnumber/decQuad.h
index 80f5eef..af9bc24 100644
--- a/libdecnumber/decQuad.h
+++ b/libdecnumber/decQuad.h
@@ -31,25 +31,27 @@
/* ------------------------------------------------------------------ */
/* 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))
@@ -57,14 +59,11 @@
/* Required include */
#include "decContext.h"
- /* The decQuad decimal 128-bit type, accessible by all sizes */
+ /* The decQuad decimal 128-bit type, accessible by various types */
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];
- #if DECUSE64
- uint64_t longs[DECQUAD_Bytes/8];
- #endif
+ uint32_t words[DECQUAD_Bytes/4];
} decQuad;
/* ---------------------------------------------------------------- */
@@ -73,21 +72,21 @@
/* 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
/* ---------------------------------------------------------------- */
@@ -100,7 +99,6 @@
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 *);
@@ -184,8 +182,7 @@
/* 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) decimal128FromNumber((decimal128 *)(dq), dn, set)
+ #define decQuadFromNumber(dq, dn, set) (decQuad *)decimal128FromNumber((decimal128 *)(dq), dn, set)
#endif