diff options
Diffstat (limited to 'contrib/libgmp/mpf/add_ui.c')
| -rw-r--r-- | contrib/libgmp/mpf/add_ui.c | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/contrib/libgmp/mpf/add_ui.c b/contrib/libgmp/mpf/add_ui.c deleted file mode 100644 index f181df4..0000000 --- a/contrib/libgmp/mpf/add_ui.c +++ /dev/null @@ -1,151 +0,0 @@ -/* mpf_add_ui -- Add a float and an unsigned integer. - -Copyright (C) 1993, 1994, 1996 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 Library General Public License as published by -the Free Software Foundation; either version 2 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 Library General Public -License for more details. - -You should have received a copy of the GNU Library General Public License -along with the GNU MP Library; see the file COPYING.LIB. If not, write to -the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, -MA 02111-1307, USA. */ - -#include "gmp.h" -#include "gmp-impl.h" - -void -#if __STDC__ -mpf_add_ui (mpf_ptr sum, mpf_srcptr u, unsigned long int v) -#else -mpf_add_ui (sum, u, v) - mpf_ptr sum; - mpf_srcptr u; - unsigned long int v; -#endif -{ - mp_srcptr up = u->_mp_d; - mp_ptr sump = sum->_mp_d; - mp_size_t usize, sumsize; - mp_size_t prec = sum->_mp_prec; - mp_exp_t uexp = u->_mp_exp; - - usize = u->_mp_size; - if (usize <= 0) - { - if (usize == 0) - { - mpf_set_ui (sum, v); - return; - } - else - { - __mpf_struct u_negated; - u_negated._mp_size = -usize; - u_negated._mp_exp = u->_mp_exp; - u_negated._mp_d = u->_mp_d; - mpf_sub_ui (sum, &u_negated, v); - sum->_mp_size = -(sum->_mp_size); - return; - } - } - - if (v == 0) - { - sum_is_u: - if (u != sum) - { - sumsize = MIN (usize, prec + 1); - MPN_COPY (sum->_mp_d, up + usize - sumsize, sumsize); - sum->_mp_size = sumsize; - sum->_mp_exp = u->_mp_exp; - } - return; - } - - if (uexp > 0) - { - /* U >= 1. */ - if (uexp > prec) - { - /* U >> V, V is not part of final result. */ - goto sum_is_u; - } - else - { - /* U's "limb point" is somewhere between the first limb - and the PREC:th limb. - Both U and V are part of the final result. */ - if (uexp > usize) - { - /* uuuuuu0000. */ - /* + v. */ - /* We begin with moving U to the top of SUM, to handle - samevar(U,SUM). */ - MPN_COPY_DECR (sump + uexp - usize, up, usize); - sump[0] = v; - MPN_ZERO (sump + 1, uexp - usize - 1); -#if 0 /* What is this??? */ - if (sum == u) - MPN_COPY (sum->_mp_d, sump, uexp); -#endif - sum->_mp_size = uexp; - sum->_mp_exp = uexp; - } - else - { - /* uuuuuu.uuuu */ - /* + v. */ - mp_limb_t cy_limb; - if (usize > prec) - { - /* Ignore excess limbs in U. */ - up += usize - prec; - usize -= usize - prec; /* Eq. usize = prec */ - } - if (sump != up) - MPN_COPY (sump, up, usize - uexp); - cy_limb = mpn_add_1 (sump + usize - uexp, up + usize - uexp, - uexp, (mp_limb_t) v); - sump[usize] = cy_limb; - sum->_mp_size = usize + cy_limb; - sum->_mp_exp = uexp + cy_limb; - } - } - } - else - { - /* U < 1, so V > U for sure. */ - /* v. */ - /* .0000uuuu */ - if ((-uexp) >= prec) - { - sump[0] = v; - sum->_mp_size = 1; - sum->_mp_exp = 1; - } - else - { - if (usize + (-uexp) + 1 > prec) - { - /* Ignore excess limbs in U. */ - up += usize + (-uexp) + 1 - prec; - usize -= usize + (-uexp) + 1 - prec; - } - if (sump != up) - MPN_COPY (sump, up, usize); - MPN_ZERO (sump + usize, -uexp); - sump[usize + (-uexp)] = v; - sum->_mp_size = usize + (-uexp) + 1; - sum->_mp_exp = 1; - } - } -} |
