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http://sourceware.org/ml/libc-alpha/2013-07/msg00001.html This patch starts the process of supporting powerpc64 little-endian long double in glibc. IBM long double is an array of two ieee doubles, so making union ibm_extended_long_double reflect this fact is the correct way to access fields of the doubles. * sysdeps/ieee754/ldbl-128ibm/ieee754.h (union ibm_extended_long_double): Define as an array of ieee754_double. (IBM_EXTENDED_LONG_DOUBLE_BIAS): Delete. * sysdeps/ieee754/ldbl-128ibm/printf_fphex.c: Update all references to ibm_extended_long_double and IBM_EXTENDED_LONG_DOUBLE_BIAS. * sysdeps/ieee754/ldbl-128ibm/e_exp10l.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/e_expl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/ldbl2mpn.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/math_ldbl.h: Likewise. * sysdeps/ieee754/ldbl-128ibm/mpn2ldbl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/s_nearbyintl.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/strtold_l.c: Likewise. * sysdeps/ieee754/ldbl-128ibm/x2y2m1l.c: Likewise.
67 lines
2.4 KiB
C
67 lines
2.4 KiB
C
/* Copyright (C) 1999-2013 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, see
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<http://www.gnu.org/licenses/>. */
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#include <math.h>
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#include <stdlib.h>
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#include <wchar.h>
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#include <xlocale.h>
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/* The actual implementation for all floating point sizes is in strtod.c.
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These macros tell it to produce the `long double' version, `strtold'. */
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#define FLOAT long double
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#define FLT LDBL
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#ifdef USE_WIDE_CHAR
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extern long double ____new_wcstold_l (const wchar_t *, wchar_t **, __locale_t);
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# define STRTOF __new_wcstold_l
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# define __STRTOF ____new_wcstold_l
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# define ____STRTOF_INTERNAL ____wcstold_l_internal
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#else
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extern long double ____new_strtold_l (const char *, char **, __locale_t);
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# define STRTOF __new_strtold_l
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# define __STRTOF ____new_strtold_l
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# define ____STRTOF_INTERNAL ____strtold_l_internal
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#endif
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extern __typeof (__STRTOF) STRTOF;
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libc_hidden_proto (__STRTOF)
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libc_hidden_proto (STRTOF)
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#define MPN2FLOAT __mpn_construct_long_double
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#define FLOAT_HUGE_VAL HUGE_VALL
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# define SET_MANTISSA(flt, mant) \
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do { union ibm_extended_long_double u; \
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u.ld = (flt); \
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u.d[0].ieee_nan.mantissa0 = (mant) >> 32; \
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u.d[0].ieee_nan.mantissa1 = (mant); \
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if ((u.d[0].ieee.mantissa0 | u.d[0].ieee.mantissa1) != 0) \
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(flt) = u.ld; \
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} while (0)
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#include <strtod_l.c>
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#ifdef __LONG_DOUBLE_MATH_OPTIONAL
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# include <math_ldbl_opt.h>
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# ifdef USE_WIDE_CHAR
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weak_alias (____new_wcstold_l, ___new_wcstold_l);
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long_double_symbol (libc, ___new_wcstold_l, wcstold_l);
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long_double_symbol (libc, ____new_wcstold_l, __wcstold_l);
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# else
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weak_alias (____new_strtold_l, ___new_strtold_l);
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long_double_symbol (libc, ___new_strtold_l, strtold_l);
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long_double_symbol (libc, ____new_strtold_l, __strtold_l);
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# endif
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#endif
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