145 lines
4.0 KiB
C
145 lines
4.0 KiB
C
/* Copyright (C) 2007-2020 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 decimal32FromString __dpd32FromString
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#define decimal32ToString __dpd32ToString
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#define decimal32ToEngString __dpd32ToEngString
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#define decimal32FromNumber __dpd32FromNumber
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#define decimal32ToNumber __dpd32ToNumber
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#include "dpd/decimal32.c"
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#undef decimal32FromString
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#undef decimal32ToString
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#undef decimal32ToEngString
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#undef decimal32FromNumber
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#undef decimal32ToNumber
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#include "bid-dpd.h"
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#ifdef IN_LIBGCC2
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#define decimal32FromString __decimal32FromString
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#define decimal32ToString __decimal32ToString
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#define decimal32ToEngString __decimal32ToEngString
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#define decimal32FromNumber __decimal32FromNumber
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#define decimal32ToNumber __decimal32ToNumber
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#endif
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decimal32 *decimal32FromString (decimal32 *, const char *, decContext *);
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char *decimal32ToString (const decimal32 *, char *);
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char *decimal32ToEngString (const decimal32 *, char *);
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decimal32 *decimal32FromNumber (decimal32 *, const decNumber *, decContext *);
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decNumber *decimal32ToNumber (const decimal32 *, decNumber *);
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void __host_to_ieee_32 (_Decimal32 in, decimal32 *out);
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void __ieee_to_host_32 (decimal32 in, _Decimal32 *out);
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decimal32 *
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decimal32FromNumber (decimal32 *d32, const decNumber *dn,
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decContext *set)
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{
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/* decimal32 and _Decimal32 are different types. */
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union
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{
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_Decimal32 _Dec;
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decimal32 dec;
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} u;
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__dpd32FromNumber (d32, dn, set);
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/* __dpd32FromNumber returns in big endian. But _dpd_to_bid32 takes
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host endian. */
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__ieee_to_host_32 (*d32, &u._Dec);
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/* Convert DPD to BID. */
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_dpd_to_bid32 (&u._Dec, &u._Dec);
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/* dfp.c is in bid endian. */
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__host_to_ieee_32 (u._Dec, &u.dec);
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/* d32 is returned as a pointer to _Decimal32 here. */
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*d32 = u.dec;
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return d32;
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}
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decNumber *
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decimal32ToNumber (const decimal32 *bid32, decNumber *dn)
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{
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/* decimal32 and _Decimal32 are different types. */
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union
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{
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_Decimal32 _Dec;
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decimal32 dec;
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} u;
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/* bid32 is a pointer to _Decimal32 in bid endian. But _bid_to_dpd32
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takes host endian. */
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__ieee_to_host_32 (*bid32, &u._Dec);
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/* Convert BID to DPD. */
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_bid_to_dpd32 (&u._Dec, &u._Dec);
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/* __dpd32ToNumber is in bid endian. */
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__host_to_ieee_32 (u._Dec, &u.dec);
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return __dpd32ToNumber (&u.dec, dn);
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}
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char *
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decimal32ToString (const decimal32 *d32, char *string)
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{
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decNumber dn; /* work */
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decimal32ToNumber (d32, &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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decimal32ToEngString (const decimal32 *d32, char *string)
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{
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decNumber dn; /* work */
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decimal32ToNumber (d32, &dn);
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decNumberToEngString (&dn, string);
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return string;
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}
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decimal32 *
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decimal32FromString (decimal32 *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_DECIMAL32); /* 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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decimal32FromNumber (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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