a855debfb4
* libquadmath.texi (FLT128_DIG, FLT128_MIN_10_EXP, FLT128_MAX_10_EXP): Document. (strtoflt128): Remove obsolete comment. * configure.ac (HAVE_STRTOULL): New check. * printf/gmp-impl.h (mpn_construct_float128): New prototype, define. * printf/mul_n.c: Include <config.h>. * printf/add_n.c: Likewise. * printf/cmp.c: Likewise. * printf/fpioconst.c: Likewise. * printf/mul_1.c: Likewise. * printf/rshift.c: Likewise. * printf/lshift.c: Likewise. * printf/submul_1.c: Likewise. * printf/sub_n.c: Likewise. * printf/divrem.c: Likewise. * printf/addmul_1.c: Likewise. * printf/mul.c: Likewise. * printf/quadmath-printf.h (isupper, isdigit, tolower): Change to avoid evaluating argument multiple times. (isxdigit): Redefine. * strtod/strtoflt128.c: New file. * strtod/strtod_l.c: New file. * strtod/mpn2flt128.c: New file. * strtod/grouping.h: New file. * strtod/tens_in_limb.c: New file. * gdtoa/arith.h: Removed. * gdtoa/gd_qnan.h: Removed. * gdtoa/gdtoa_fltrnds.h: Removed. * gdtoa/gdtoa.h: Removed. * gdtoa/gdtoaimp.h: Removed. * gdtoa/gethex.c: Removed. * gdtoa/gmisc.c: Removed. * gdtoa/hd_init.c: Removed. * gdtoa/hexnan.c: Removed. * gdtoa/makefile: Removed. * gdtoa/misc.c: Removed. * gdtoa/README.gdtoa: Removed. * gdtoa/smisc.c: Removed. * gdtoa/strtodg.c: Removed. * gdtoa/strtopQ.c: Removed. * gdtoa/sum.c: Removed. * quadmath.h (FLT128_DIG, FLT128_MIN_10_EXP, FLT128_MAX_10_EXP): Define. * Makefile.am (libquadmath_la_SOURCES): Remove gdtoa/*, add strtod/strtoflt128.c, strtod/mpn2flt128.c and strtod/tens_in_limb.c. * config.h.in: Regenerated. * configure: Regenerated. * Makefile.in: Regenerated. From-SVN: r170254
52 lines
1.8 KiB
C
52 lines
1.8 KiB
C
/* Copyright (C) 1995,1996,1997,1998,1999,2002,2003
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Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <config.h>
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#include <float.h>
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#include <math.h>
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#include "../printf/gmp-impl.h"
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/* Convert a multi-precision integer of the needed number of bits (113 for
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long double) and an integral power of two to a `long double' in IEEE854
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quad-precision format. */
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__float128
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mpn_construct_float128 (mp_srcptr frac_ptr, int expt, int sign)
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{
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ieee854_float128 u;
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u.ieee.negative = sign;
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u.ieee.exponent = expt + IEEE854_FLOAT128_BIAS;
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#if BITS_PER_MP_LIMB == 32
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u.ieee.mant_low = (((uint64_t) frac_ptr[1]) << 32)
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| (frac_ptr[0] & 0xffffffff);
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u.ieee.mant_high = (((uint64_t) frac_ptr[3]
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& (((mp_limb_t) 1 << (FLT128_MANT_DIG - 96)) - 1))
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<< 32) | (frac_ptr[2] & 0xffffffff);
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#elif BITS_PER_MP_LIMB == 64
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u.ieee.mant_low = frac_ptr[0];
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u.ieee.mant_high = frac_ptr[1]
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& (((mp_limb_t) 1 << (FLT128_MANT_DIG - 64)) - 1);
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#else
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#error "mp_limb size " BITS_PER_MP_LIMB "not accounted for"
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#endif
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return u.value;
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}
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