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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libdecnumber/bid/decimal32.c
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Diffstat (limited to 'libdecnumber/bid/decimal32.c')
-rw-r--r--libdecnumber/bid/decimal32.c145
1 files changed, 145 insertions, 0 deletions
diff --git a/libdecnumber/bid/decimal32.c b/libdecnumber/bid/decimal32.c
new file mode 100644
index 000000000..1cd760759
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+++ b/libdecnumber/bid/decimal32.c
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+/* Copyright (C) 2007, 2009
+ Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+<http://www.gnu.org/licenses/>. */
+
+#define decimal32FromString __dpd32FromString
+#define decimal32ToString __dpd32ToString
+#define decimal32ToEngString __dpd32ToEngString
+#define decimal32FromNumber __dpd32FromNumber
+#define decimal32ToNumber __dpd32ToNumber
+
+#include "dpd/decimal32.c"
+
+#undef decimal32FromString
+#undef decimal32ToString
+#undef decimal32ToEngString
+#undef decimal32FromNumber
+#undef decimal32ToNumber
+
+#include "bid-dpd.h"
+
+#ifdef IN_LIBGCC2
+#define decimal32FromString __decimal32FromString
+#define decimal32ToString __decimal32ToString
+#define decimal32ToEngString __decimal32ToEngString
+#define decimal32FromNumber __decimal32FromNumber
+#define decimal32ToNumber __decimal32ToNumber
+#endif
+
+decimal32 *decimal32FromString (decimal32 *, const char *, decContext *);
+char *decimal32ToString (const decimal32 *, char *);
+char *decimal32ToEngString (const decimal32 *, char *);
+decimal32 *decimal32FromNumber (decimal32 *, const decNumber *, decContext *);
+decNumber *decimal32ToNumber (const decimal32 *, decNumber *);
+
+void __host_to_ieee_32 (_Decimal32 in, decimal32 *out);
+void __ieee_to_host_32 (decimal32 in, _Decimal32 *out);
+
+decimal32 *
+decimal32FromNumber (decimal32 *d32, const decNumber *dn,
+ decContext *set)
+{
+ /* decimal32 and _Decimal32 are different types. */
+ union
+ {
+ _Decimal32 _Dec;
+ decimal32 dec;
+ } u;
+
+ __dpd32FromNumber (d32, dn, set);
+
+ /* __dpd32FromNumber returns in big endian. But _dpd_to_bid32 takes
+ host endian. */
+ __ieee_to_host_32 (*d32, &u._Dec);
+
+ /* Convert DPD to BID. */
+ _dpd_to_bid32 (&u._Dec, &u._Dec);
+
+ /* dfp.c is in bid endian. */
+ __host_to_ieee_32 (u._Dec, &u.dec);
+
+ /* d32 is returned as a pointer to _Decimal32 here. */
+ *d32 = u.dec;
+
+ return d32;
+}
+
+decNumber *
+decimal32ToNumber (const decimal32 *bid32, decNumber *dn)
+{
+ /* decimal32 and _Decimal32 are different types. */
+ union
+ {
+ _Decimal32 _Dec;
+ decimal32 dec;
+ } u;
+
+ /* bid32 is a pointer to _Decimal32 in bid endian. But _bid_to_dpd32
+ takes host endian. */
+ __ieee_to_host_32 (*bid32, &u._Dec);
+
+ /* Convert BID to DPD. */
+ _bid_to_dpd32 (&u._Dec, &u._Dec);
+
+ /* __dpd32ToNumber is in bid endian. */
+ __host_to_ieee_32 (u._Dec, &u.dec);
+
+ return __dpd32ToNumber (&u.dec, dn);
+}
+
+char *
+decimal32ToString (const decimal32 *d32, char *string)
+{
+ decNumber dn; /* work */
+ decimal32ToNumber (d32, &dn);
+ decNumberToString (&dn, string);
+ return string;
+}
+
+char *
+decimal32ToEngString (const decimal32 *d32, char *string)
+{
+ decNumber dn; /* work */
+ decimal32ToNumber (d32, &dn);
+ decNumberToEngString (&dn, string);
+ return string;
+}
+
+decimal32 *
+decimal32FromString (decimal32 *result, const char *string,
+ decContext *set)
+{
+ decContext dc; /* work */
+ decNumber dn; /* .. */
+
+ decContextDefault (&dc, DEC_INIT_DECIMAL32); /* no traps, please */
+ dc.round = set->round; /* use supplied rounding */
+
+ decNumberFromString (&dn, string, &dc); /* will round if needed */
+ decimal32FromNumber (result, &dn, &dc);
+ if (dc.status != 0)
+ { /* something happened */
+ decContextSetStatus (set, dc.status); /* .. pass it on */
+ }
+ return result;
+}