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glibc  2.9
ots_cvtxt.c
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00001 /* Software floating-point emulation: floating point truncation.
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 double
00026 _OtsConvertFloatXT (long al, long ah, long _round)
00027 {
00028   FP_DECL_EX;
00029   FP_DECL_Q(A);
00030   FP_DECL_D(R);
00031   double r;
00032 
00033   FP_INIT_ROUNDMODE;
00034   FP_UNPACK_SEMIRAW_Q(A, a);
00035 #if (2 * _FP_W_TYPE_SIZE) < _FP_FRACBITS_Q
00036   FP_TRUNC(D,Q,2,4,R,A);
00037 #else
00038   FP_TRUNC(D,Q,1,2,R,A);
00039 #endif
00040   FP_PACK_SEMIRAW_D(r, R);
00041   FP_HANDLE_EXCEPTIONS;
00042 
00043   return r;
00044 }