145 lines
4.1 KiB
C
145 lines
4.1 KiB
C
/* Copyright (C) 2007-2018 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 decimal128FromString __dpd128FromString
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#define decimal128ToString __dpd128ToString
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#define decimal128ToEngString __dpd128ToEngString
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#define decimal128FromNumber __dpd128FromNumber
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#define decimal128ToNumber __dpd128ToNumber
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#include "dpd/decimal128.c"
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#undef decimal128FromString
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#undef decimal128ToString
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#undef decimal128ToEngString
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#undef decimal128FromNumber
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#undef decimal128ToNumber
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#include "bid-dpd.h"
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#ifdef IN_LIBGCC2
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#define decimal128FromString __decimal128FromString
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#define decimal128ToString __decimal128ToString
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#define decimal128ToEngString __decimal128ToEngString
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#define decimal128FromNumber __decimal128FromNumber
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#define decimal128ToNumber __decimal128ToNumber
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#endif
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decimal128 *decimal128FromString (decimal128 *, const char *, decContext *);
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char *decimal128ToString (const decimal128 *, char *);
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char *decimal128ToEngString (const decimal128 *, char *);
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decimal128 *decimal128FromNumber (decimal128 *, const decNumber *, decContext *);
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decNumber *decimal128ToNumber (const decimal128 *, decNumber *);
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void __host_to_ieee_128 (_Decimal128 in, decimal128 *out);
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void __ieee_to_host_128 (decimal128 in, _Decimal128 *out);
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decimal128 *
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decimal128FromNumber (decimal128 *d128, const decNumber *dn,
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decContext *set)
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{
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/* decimal128 and _Decimal128 are different types. */
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union
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{
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_Decimal128 _Dec;
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decimal128 dec;
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} u;
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__dpd128FromNumber (d128, dn, set);
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/* __dpd128FromNumber returns in big endian. But _dpd_to_bid128 takes
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host endian. */
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__ieee_to_host_128 (*d128, &u._Dec);
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/* Convert DPD to BID. */
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_dpd_to_bid128 (&u._Dec, &u._Dec);
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/* dfp.c is in bid endian. */
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__host_to_ieee_128 (u._Dec, &u.dec);
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/* d128 is returned as a pointer to _Decimal128 here. */
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*d128 = u.dec;
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return d128;
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}
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decNumber *
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decimal128ToNumber (const decimal128 *bid128, decNumber *dn)
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{
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/* decimal128 and _Decimal128 are different types. */
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union
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{
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_Decimal128 _Dec;
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decimal128 dec;
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} u;
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/* bid128 is a pointer to _Decimal128 in bid endian. But _bid_to_dpd128
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takes host endian. */
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__ieee_to_host_128 (*bid128, &u._Dec);
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/* Convert BID to DPD. */
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_bid_to_dpd128 (&u._Dec, &u._Dec);
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/* __dpd128ToNumber is in bid endian. */
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__host_to_ieee_128 (u._Dec, &u.dec);
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return __dpd128ToNumber (&u.dec, dn);
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}
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char *
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decimal128ToString (const decimal128 *d128, char *string)
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{
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decNumber dn; /* work */
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decimal128ToNumber (d128, &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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decimal128ToEngString (const decimal128 *d128, char *string)
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{
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decNumber dn; /* work */
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decimal128ToNumber (d128, &dn);
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decNumberToEngString (&dn, string);
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return string;
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}
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decimal128 *
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decimal128FromString (decimal128 *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_DECIMAL128); /* 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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decimal128FromNumber (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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