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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.2.2/] [libdecnumber/] [decLibrary.c] - Rev 242
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/* Temporary library support for decimal floating point. Copyright (C) 2005, 2006 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 2, or (at your option) any later version. In addition to the permissions in the GNU General Public License, the Free Software Foundation gives you unlimited permission to link the compiled version of this file into combinations with other programs, and to distribute those combinations without any restriction coming from the use of this file. (The General Public License restrictions do apply in other respects; for example, they cover modification of the file, and distribution when not linked into a combine executable.) 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. You should have received a copy of the GNU General Public License along with GCC; see the file COPYING. If not, write to the Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #include "config.h" #include "decContext.h" #include "decimal128.h" #include "decimal64.h" #include "decimal32.h" void __host_to_ieee_32 (_Decimal32, decimal32 *); void __host_to_ieee_64 (_Decimal64, decimal64 *); void __host_to_ieee_128 (_Decimal128, decimal128 *); extern int isinfd32 (_Decimal32); extern int isinfd64 (_Decimal64); extern int isinfd128 (_Decimal128); extern void __dfp_enable_traps (void); extern void __dfp_raise (int exception __attribute__ ((unused))); int isinfd32 (_Decimal32 arg) { decNumber dn; decimal32 d32; __host_to_ieee_32 (arg, &d32); decimal32ToNumber (&d32, &dn); return (decNumberIsInfinite (&dn)); } int isinfd64 (_Decimal64 arg) { decNumber dn; decimal64 d64; __host_to_ieee_64 (arg, &d64); decimal64ToNumber (&d64, &dn); return (decNumberIsInfinite (&dn)); } int isinfd128 (_Decimal128 arg) { decNumber dn; decimal128 d128; __host_to_ieee_128 (arg, &d128); decimal128ToNumber (&d128, &dn); return (decNumberIsInfinite (&dn)); } int __dfp_traps; void __dfp_enable_traps (void) { __dfp_traps = 1; } void __dfp_raise (int exception __attribute__ ((unused))) { raise (SIGFPE); } uint32_t __dec_byte_swap (uint32_t in) { uint32_t out = 0; unsigned char *p = (unsigned char *) &out; union { uint32_t i; unsigned char b[4]; } u; u.i = in; p[0] = u.b[3]; p[1] = u.b[2]; p[2] = u.b[1]; p[3] = u.b[0]; return out; }
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