system: Add "--" after "-c" for sh (BZ #28519)

[thirdparty/glibc.git] / stdlib / fpioconst.h

diff --git a/stdlib/fpioconst.h b/stdlib/fpioconst.h
index 35c7c6f02b0943af8467cbfd0e3a8fec6f5cec1b..2d5e8cdf4fe218b3937972292f3a36fe00613302 100644 (file)
--- a/stdlib/fpioconst.h
+++ b/stdlib/fpioconst.h
@@ -1,27 +1,27 @@
 /* Header file for constants used in floating point <-> decimal conversions.
-   Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
+   Copyright (C) 1995-2023 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 Library General Public License as
-   published by the Free Software Foundation; either version 2 of the
-   License, or (at your option) any later version.
+   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
-   Library General Public License for more details.
+   Lesser General Public License for more details.
 
-   You should have received a copy of the GNU Library General Public
-   License along with the GNU C 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.  */
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
 
 #ifndef _FPIOCONST_H
 #define        _FPIOCONST_H
 
 #include <float.h>
-#include "gmp.h"
+#include <math.h>
+#include <gmp.h>
 
 
 /* These values are used by __printf_fp, where they are noncritical (if the
@@ -32,21 +32,53 @@
    XXX These should be defined in <float.h>.  For the time being, we have the
    IEEE754 values here.  */
 
-#define LDBL_MAX_10_EXP_LOG    12 /* = floor(log_2(LDBL_MAX_10_EXP)) */
+#if !defined __NO_LONG_DOUBLE_MATH && __LDBL_MAX_EXP__ > 1024
+# define LDBL_MAX_10_EXP_LOG   12 /* = floor(log_2(LDBL_MAX_10_EXP)) */
+#else
+# define LDBL_MAX_10_EXP_LOG   8 /* = floor(log_2(LDBL_MAX_10_EXP)) */
+#endif
 #define DBL_MAX_10_EXP_LOG     8 /* = floor(log_2(DBL_MAX_10_EXP)) */
 #define FLT_MAX_10_EXP_LOG     5 /* = floor(log_2(FLT_MAX_10_EXP)) */
 
+/* On some machines, _Float128 may be ABI-distinct from long double (e.g
+   IBM extended precision).  */
+#include <bits/floatn.h>
+
+#if __HAVE_DISTINCT_FLOAT128
+# define FLT128_MAX_10_EXP_LOG 12 /* = floor(log_2(FLT128_MAX_10_EXP)) */
+#endif
+
+/* For strtold, we need powers of 10 up to floor (log_2 (LDBL_MANT_DIG
+   - LDBL_MIN_EXP + 2)).  When _Float128 is enabled in libm and it is
+   ABI-distinct from long double (e.g. on powerpc64le), we also need powers
+   of 10 up to floor (log_2 (FLT128_MANT_DIG - FLT128_MIN_EXP + 2)).  */
+#if (!defined __NO_LONG_DOUBLE_MATH && __LDBL_MAX_EXP__ > 1024) \
+    || __HAVE_DISTINCT_FLOAT128
+# define FPIOCONST_HAVE_EXTENDED_RANGE 1
+#else
+# define FPIOCONST_HAVE_EXTENDED_RANGE 0
+#endif
+
+#if FPIOCONST_HAVE_EXTENDED_RANGE
+# define FPIOCONST_POW10_ARRAY_SIZE    15
+#else
+# define FPIOCONST_POW10_ARRAY_SIZE    11
+#endif
+
+/* The array with the number representation. */
+extern const mp_limb_t __tens[] attribute_hidden;
 
 /* Table of powers of ten.  This is used by __printf_fp and by
    strtof/strtod/strtold.  */
 struct mp_power
   {
-    const mp_limb_t *array;    /* The array with the number representation. */
+    size_t arrayoff;           /* Offset in `__tens'.  */
     mp_size_t arraysize;       /* Size of the array.  */
     int p_expo;                        /* Exponent of the number 10^(2^i).  */
     int m_expo;                        /* Exponent of the number 10^-(2^i-1).  */
   };
-extern const struct mp_power _fpioconst_pow10[LDBL_MAX_10_EXP_LOG + 1];
+extern const struct mp_power _fpioconst_pow10[FPIOCONST_POW10_ARRAY_SIZE]
+     attribute_hidden;
 
 /* The constants in the array `_fpioconst_pow10' have an offset.  */
 #if BITS_PER_MP_LIMB == 32