libquadmath.texi (FLT128_DIG, [...]): Document.

	* 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

1 files changed, 51 insertions, 0 deletions

diff --git a/libquadmath/strtod/mpn2flt128.c b/libquadmath/strtod/mpn2flt128.c
new file mode 100644
index 0000000..844ae97
--- /dev/null
+++ b/libquadmath/strtod/mpn2flt128.c
@@ -0,0 +1,51 @@
+/* Copyright (C) 1995,1996,1997,1998,1999,2002,2003
+	Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C 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 2.1 of the License, or (at your option) any later version.
+
+   The GNU C 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 C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <config.h>
+#include <float.h>
+#include <math.h>
+#include "../printf/gmp-impl.h"
+
+/* Convert a multi-precision integer of the needed number of bits (113 for
+   long double) and an integral power of two to a `long double' in IEEE854
+   quad-precision format.  */
+
+__float128
+mpn_construct_float128 (mp_srcptr frac_ptr, int expt, int sign)
+{
+  ieee854_float128 u;
+
+  u.ieee.negative = sign;
+  u.ieee.exponent = expt + IEEE854_FLOAT128_BIAS;
+#if BITS_PER_MP_LIMB == 32
+  u.ieee.mant_low = (((uint64_t) frac_ptr[1]) << 32)
+		    | (frac_ptr[0] & 0xffffffff);
+  u.ieee.mant_high = (((uint64_t) frac_ptr[3]
+		       & (((mp_limb_t) 1 << (FLT128_MANT_DIG - 96)) - 1))
+		      << 32) | (frac_ptr[2] & 0xffffffff);
+#elif BITS_PER_MP_LIMB == 64
+  u.ieee.mant_low = frac_ptr[0];
+  u.ieee.mant_high = frac_ptr[1]
+		     & (((mp_limb_t) 1 << (FLT128_MANT_DIG - 64)) - 1);
+#else
+  #error "mp_limb size " BITS_PER_MP_LIMB "not accounted for"
+#endif
+
+  return u.value;
+}