1d92226be3
PR fortran/47642 * libquadmath.texi (quadmath_snprintf): Document. (quadmath_flt128tostr): Remove. * Makefile.am (libquadmath_la_SOURCES): Add printf/*.c. Remove quadmath_io.c, gdtoa/gdtoa.c, gdtoa/g__fmt.c, gdtoa/g_Qfmt.c, gdtoa/dmisc.c and gdtoa/ulp.c. * quadmath.h (quadmath_snprintf): New prototype. (quadmath_flt128tostr): Remove. * quadmath_weak.h (quadmath_snprintf): Add. (quadmath_flt128tostr): Remove. * configure.ac: New AC_CHECK_HEADERS headers: langinfo.h, wchar.h, wctype.h, limits.h, ctype.h, printf.h, errno.h. (AC_USE_SYSTEM_EXTENSIONS): Add. (HAVE_HIDDEN_VISIBILITY, HAVE_PRINTF_HOOKS, USE_LOCALE_SUPPORT, USE_I18N_NUMBER_H): New checks. * quadmath.map (QUADMATH_1.0): Add quadmath_snprintf. Remove quadmath_flt128tostr. * printf/printf_fphex.c: New file. * printf/_itowa.h: New file. * printf/mul_n.c: New file. * printf/quadmath-printf.h: New file. * printf/submul_1.c: New file. * printf/quadmath-printf.c: New file. * printf/gmp-impl.h: New file. * printf/lshift.c: New file. * printf/fpioconst.h: New file. * printf/add_n.c: New file. * printf/cmp.c: New file. * printf/sub_n.c: New file. * printf/mul.c: New file. * printf/divrem.c: New file. * printf/addmul_1.c: New file. * printf/printf_fp.c: New file. * printf/_itoa.h: New file. * printf/fpioconst.c: New file. * printf/_i18n_number.h: New file. * printf/flt1282mpn.c: New file. * printf/rshift.c: New file. * printf/mul_1.c: New file. * quadmath_io.c: Removed. * gdtoa/gdtoa.c: Removed. * gdtoa/g__fmt.c: Removed. * gdtoa/g_Qfmt.c: Removed. * gdtoa/dmisc.c: Removed. * gdtoa/ulp.c: Removed. * config.h.in: Regenerated. * configure: Regenerated. * Makefile.in: Regenerated. * io/write_float.def (DTOAQ): Use quadmath_snprintf instead of quadmath_flt128tostr. * io/transfer128.c (tmp2): Initialize to quadmath_snprintf instead of quadmath_flt128tostr. From-SVN: r170135
62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
/* mpn_add_n -- Add two limb vectors of equal, non-zero length.
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Copyright (C) 1992, 1993, 1994, 1996 Free Software Foundation, Inc.
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This file is part of the GNU MP Library.
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The GNU MP Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or (at your
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option) any later version.
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The GNU MP Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the GNU MP Library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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MA 02111-1307, USA. */
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#include "gmp-impl.h"
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mp_limb_t
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#if __STDC__
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mpn_add_n (mp_ptr res_ptr, mp_srcptr s1_ptr, mp_srcptr s2_ptr, mp_size_t size)
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#else
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mpn_add_n (res_ptr, s1_ptr, s2_ptr, size)
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register mp_ptr res_ptr;
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register mp_srcptr s1_ptr;
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register mp_srcptr s2_ptr;
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mp_size_t size;
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#endif
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{
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register mp_limb_t x, y, cy;
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register mp_size_t j;
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/* The loop counter and index J goes from -SIZE to -1. This way
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the loop becomes faster. */
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j = -size;
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/* Offset the base pointers to compensate for the negative indices. */
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s1_ptr -= j;
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s2_ptr -= j;
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res_ptr -= j;
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cy = 0;
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do
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{
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y = s2_ptr[j];
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x = s1_ptr[j];
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y += cy; /* add previous carry to one addend */
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cy = (y < cy); /* get out carry from that addition */
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y = x + y; /* add other addend */
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cy = (y < x) + cy; /* get out carry from that add, combine */
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res_ptr[j] = y;
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}
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while (++j != 0);
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return cy;
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}
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