extendsfdf2.c revision 169689
11590Srgrimes/* Software floating-point emulation. 21590Srgrimes Return a converted to IEEE double 31590Srgrimes Copyright (C) 1997,1999,2006 Free Software Foundation, Inc. 41590Srgrimes This file is part of the GNU C Library. 51590Srgrimes Contributed by Richard Henderson (rth@cygnus.com) and 61590Srgrimes Jakub Jelinek (jj@ultra.linux.cz). 71590Srgrimes 81590Srgrimes The GNU C Library is free software; you can redistribute it and/or 91590Srgrimes modify it under the terms of the GNU Lesser General Public 101590Srgrimes License as published by the Free Software Foundation; either 111590Srgrimes version 2.1 of the License, or (at your option) any later version. 121590Srgrimes 131590Srgrimes In addition to the permissions in the GNU Lesser General Public 141590Srgrimes License, the Free Software Foundation gives you unlimited 151590Srgrimes permission to link the compiled version of this file into 161590Srgrimes combinations with other programs, and to distribute those 171590Srgrimes combinations without any restriction coming from the use of this 181590Srgrimes file. (The Lesser General Public License restrictions do apply in 191590Srgrimes other respects; for example, they cover modification of the file, 201590Srgrimes and distribution when not linked into a combine executable.) 211590Srgrimes 221590Srgrimes The GNU C Library is distributed in the hope that it will be useful, 231590Srgrimes but WITHOUT ANY WARRANTY; without even the implied warranty of 241590Srgrimes MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 251590Srgrimes Lesser General Public License for more details. 261590Srgrimes 271590Srgrimes You should have received a copy of the GNU Lesser General Public 281590Srgrimes License along with the GNU C Library; if not, write to the Free 291590Srgrimes Software Foundation, 51 Franklin Street, Fifth Floor, Boston, 301590Srgrimes MA 02110-1301, USA. */ 311590Srgrimes 3250477Speter#include "soft-fp.h" 331590Srgrimes#include "single.h" 34264743Spfg#include "double.h" 351590Srgrimes 361590SrgrimesDFtype __extendsfdf2(SFtype a) 371590Srgrimes{ 381590Srgrimes FP_DECL_EX; 391590Srgrimes FP_DECL_S(A); 401590Srgrimes FP_DECL_D(R); 4127887Scharnier DFtype r; 42131507Sru 431590Srgrimes FP_INIT_ROUNDMODE; 4495124Scharnier FP_UNPACK_RAW_S(A, a); 4595124Scharnier#if _FP_W_TYPE_SIZE < _FP_FRACBITS_D 4695124Scharnier FP_EXTEND(D,S,2,1,R,A); 471590Srgrimes#else 48131507Sru FP_EXTEND(D,S,1,1,R,A); 491590Srgrimes#endif 501590Srgrimes FP_PACK_RAW_D(r, R); 511590Srgrimes FP_HANDLE_EXCEPTIONS; 521590Srgrimes 531590Srgrimes return r; 541590Srgrimes} 55131507Sru