145 lines
4.0 KiB
C
145 lines
4.0 KiB
C
/* Copyright (C) 2007-2022 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#define decimal64FromString __dpd64FromString
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#define decimal64ToString __dpd64ToString
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#define decimal64ToEngString __dpd64ToEngString
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#define decimal64FromNumber __dpd64FromNumber
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#define decimal64ToNumber __dpd64ToNumber
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#include "dpd/decimal64.c"
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#undef decimal64FromString
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#undef decimal64ToString
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#undef decimal64ToEngString
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#undef decimal64FromNumber
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#undef decimal64ToNumber
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#include "bid-dpd.h"
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#ifdef IN_LIBGCC2
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#define decimal64FromString __decimal64FromString
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#define decimal64ToString __decimal64ToString
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#define decimal64ToEngString __decimal64ToEngString
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#define decimal64FromNumber __decimal64FromNumber
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#define decimal64ToNumber __decimal64ToNumber
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#endif
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decimal64 *decimal64FromString (decimal64 *, const char *, decContext *);
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char *decimal64ToString (const decimal64 *, char *);
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char *decimal64ToEngString (const decimal64 *, char *);
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decimal64 *decimal64FromNumber (decimal64 *, const decNumber *, decContext *);
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decNumber *decimal64ToNumber (const decimal64 *, decNumber *);
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void __host_to_ieee_64 (_Decimal64 in, decimal64 *out);
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void __ieee_to_host_64 (decimal64 in, _Decimal64 *out);
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decimal64 *
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decimal64FromNumber (decimal64 *d64, const decNumber *dn,
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decContext *set)
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{
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/* decimal64 and _Decimal64 are different types. */
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union
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{
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_Decimal64 _Dec;
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decimal64 dec;
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} u;
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__dpd64FromNumber (d64, dn, set);
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/* __dpd64FromNumber returns in big endian. But _dpd_to_bid64 takes
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host endian. */
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__ieee_to_host_64 (*d64, &u._Dec);
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/* Convert DPD to BID. */
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_dpd_to_bid64 (&u._Dec, &u._Dec);
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/* dfp.c is in bid endian. */
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__host_to_ieee_64 (u._Dec, &u.dec);
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/* d64 is returned as a pointer to _Decimal64 here. */
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*d64 = u.dec;
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return d64;
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}
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decNumber *
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decimal64ToNumber (const decimal64 *bid64, decNumber *dn)
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{
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/* decimal64 and _Decimal64 are different types. */
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union
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{
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_Decimal64 _Dec;
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decimal64 dec;
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} u;
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/* bid64 is a pointer to _Decimal64 in bid endian. But _bid_to_dpd64
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takes host endian. */
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__ieee_to_host_64 (*bid64, &u._Dec);
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/* Convert BID to DPD. */
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_bid_to_dpd64 (&u._Dec, &u._Dec);
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/* __dpd64ToNumber is in bid endian. */
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__host_to_ieee_64 (u._Dec, &u.dec);
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return __dpd64ToNumber (&u.dec, dn);
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}
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char *
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decimal64ToString (const decimal64 *d64, char *string)
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{
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decNumber dn; /* work */
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decimal64ToNumber (d64, &dn);
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decNumberToString (&dn, string);
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return string;
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}
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char *
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decimal64ToEngString (const decimal64 *d64, char *string)
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{
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decNumber dn; /* work */
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decimal64ToNumber (d64, &dn);
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decNumberToEngString (&dn, string);
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return string;
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}
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decimal64 *
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decimal64FromString (decimal64 *result, const char *string,
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decContext *set)
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{
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decContext dc; /* work */
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decNumber dn; /* .. */
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decContextDefault (&dc, DEC_INIT_DECIMAL64); /* no traps, please */
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dc.round = set->round; /* use supplied rounding */
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decNumberFromString (&dn, string, &dc); /* will round if needed */
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decimal64FromNumber (result, &dn, &dc);
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if (dc.status != 0)
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{ /* something happened */
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decContextSetStatus (set, dc.status); /* .. pass it on */
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}
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return result;
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}
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