X-Git-Url: https://oss.titaniummirror.com/gitweb?a=blobdiff_plain;f=gmp%2Fmpf%2Fabs.c;fp=gmp%2Fmpf%2Fabs.c;h=4f8a76e488a3f8cdeafe4b9dd1d64315a1d5d1c2;hb=6fed43773c9b0ce596dca5686f37ac3fc0fa11c0;hp=0000000000000000000000000000000000000000;hpb=27b11d56b743098deb193d510b337ba22dc52e5c;p=msp430-gcc.git diff --git a/gmp/mpf/abs.c b/gmp/mpf/abs.c new file mode 100644 index 00000000..4f8a76e4 --- /dev/null +++ b/gmp/mpf/abs.c @@ -0,0 +1,48 @@ +/* mpf_abs -- Compute the absolute value of a float. + +Copyright 1993, 1994, 1995, 2001 Free Software Foundation, Inc. + +This file is part of the GNU MP Library. + +The GNU MP Library is free software; you can redistribute it and/or modify +it under the terms of the GNU Lesser General Public License as published by +the Free Software Foundation; either version 3 of the License, or (at your +option) any later version. + +The GNU MP Library 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 Lesser General Public +License for more details. + +You should have received a copy of the GNU Lesser General Public License +along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */ + +#include "gmp.h" +#include "gmp-impl.h" + +void +mpf_abs (mpf_ptr r, mpf_srcptr u) +{ + mp_size_t size; + + size = ABS (u->_mp_size); + if (r != u) + { + mp_size_t prec; + mp_ptr rp, up; + + prec = r->_mp_prec + 1; /* lie not to lose precision in assignment */ + rp = r->_mp_d; + up = u->_mp_d; + + if (size > prec) + { + up += size - prec; + size = prec; + } + + MPN_COPY (rp, up, size); + r->_mp_exp = u->_mp_exp; + } + r->_mp_size = size; +}