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libdecnumber: Introduce decNumberIntegralToInt64

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Introduce a new conversion function to the libdecnumber library.
This function converts a decNumber to a signed 64-bit integer.
In order to support 64-bit integers (which may have up to 19
decimal digits), the existing "powers of 10" array is expanded
from 10 to 19 entries.

Signed-off-by: Tom Musta <tommusta@gmail.com>
[agraf: fix 32bit host compile]
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Tom Musta 2014-04-21 15:54:54 -05:00 • committed by Alexander Graf
parent 8e706db21e
commit 79af357225
4 changed files with 51 additions and 4 deletions
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2
include/libdecnumber/decNumberLocal.h
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@ -98,7 +98,7 @@
/* Shared lookup tables */
extern const uByte DECSTICKYTAB[10]; /* re-round digits if sticky */
extern const uInt DECPOWERS[10]; /* powers of ten table */
extern const uLong DECPOWERS[19]; /* powers of ten table */
/* The following are included from decDPD.h */
extern const uShort DPD2BIN[1024]; /* DPD -> 0-999 */
extern const uShort BIN2DPD[1000]; /* 0-999 -> DPD */