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glibc  2.9
ots_cvttx.c
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00001 /* Software floating-point emulation: floating point extension.
00002    Copyright (C) 1997,1999,2004,2006 Free Software Foundation, Inc.
00003    This file is part of the GNU C Library.
00004    Contributed by Richard Henderson (rth@cygnus.com) and
00005                 Jakub Jelinek (jj@ultra.linux.cz).
00006 
00007    The GNU C Library is free software; you can redistribute it and/or
00008    modify it under the terms of the GNU Lesser General Public
00009    License as published by the Free Software Foundation; either
00010    version 2.1 of the License, or (at your option) any later version.
00011 
00012    The GNU C Library is distributed in the hope that it will be useful,
00013    but WITHOUT ANY WARRANTY; without even the implied warranty of
00014    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015    Lesser General Public License for more details.
00016 
00017    You should have received a copy of the GNU Lesser General Public
00018    License along with the GNU C Library; if not, write to the Free
00019    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00020    02111-1307 USA.  */
00021 
00022 #include "local-soft-fp.h"
00023 #include "double.h"
00024 
00025 /* Should never actually be used, since we're extending, but needed
00026    for linkage.  */
00027 #undef FP_ROUNDMODE
00028 #define FP_ROUNDMODE  FP_RND_ZERO
00029 
00030 void
00031 _OtsConvertFloatTX(double a)
00032 {
00033   FP_DECL_EX;
00034   FP_DECL_D(A);
00035   FP_DECL_Q(C);
00036   FP_DECL_RETURN(c);
00037 
00038   FP_UNPACK_RAW_D(A, a);
00039 #if (2 * _FP_W_TYPE_SIZE) < _FP_FRACBITS_Q
00040   FP_EXTEND(Q,D,4,2,C,A);
00041 #else
00042   FP_EXTEND(Q,D,2,1,C,A);
00043 #endif
00044   FP_PACK_RAW_Q(c, C);
00045   FP_HANDLE_EXCEPTIONS;
00046 
00047   FP_RETURN(c);
00048 }