Add strfromd, strfromf, and strfroml functions

ISO/IEC TS 18661-1 adds several functions in the strfrom family to stdlib.
This patch adds strfromd, strfromf, and strfroml.  This is being done in
preparation for the new floating-point type, float128.  The added functions
convert a floating-point value into a string, with configurable format.

42 files changed, 434 insertions, 1 deletions

diff --git a/ChangeLog b/ChangeLog
index 824ce66cbf..94a10af196 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,50 @@
+2016-10-25  Gabriel F. T. Gomes  <gftg@linux.vnet.ibm.com>
+
+	* NEWS: Mention the addition of strfromd, strfromf, and strfroml.
+	* manual/arith.texi: Document strfromd, strfromf, strfroml.
+	* stdlib/Makefile: Add strfromd, strfromf, and strfroml.
+	* stdlib/Versions (GLIBC_2.25): Add strfromd, strfromf, and strfroml.
+	* stdlib/stdlib.h (strfromd): New declaration.
+	(strfromf): Likewise.
+	(strfroml): Likewise.
+	* stdlib/strfrom-skeleton.c: New file.  Generic implementation for
+	strfrom.
+	* stdlib/strfromd.c: New file.
+	* stdlib/strfromf.c: Likewise.
+	* stdlib/strfroml.c: Likewise.
+	* stdlib/bits/stdlib-ldbl.h: Add redirection from strfroml to strfromd.
+	* sysdeps/ieee754/ldbl-opt/Makefile: Add rule for nldbl-strfroml.c.
+	* sysdeps/ieee754/ldbl-opt/nldbl-strfroml.c: New file;
+	* sysdeps/arm/nacl/libc.abilist: Update.
+	* sysdeps/unix/sysv/linux/aarch64/libc.abilist: Likewise.
+	* sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise.
+	* sysdeps/unix/sysv/linux/arm/libc.abilist: Likewise.
+	* sysdeps/unix/sysv/linux/hppa/libc.abilist: Likewise.
+	* sysdeps/unix/sysv/linux/i386/libc.abilist: Likewise.
+	* sysdeps/unix/sysv/linux/ia64/libc.abilist: Likewise.
+	* sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist: Likewise.
+	* sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist: Likewise.
+	* sysdeps/unix/sysv/linux/microblaze/libc.abilist: Likewise.
+	* sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist: Likewise.
+	* sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist: Likewise.
+	* sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist: Likewise.
+	* sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise.
+	* sysdeps/unix/sysv/linux/nios2/libc.abilist: Likewise.
+	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist: Likewise.
+	* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist: Likewise.
+	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist: Likewise.
+	* sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist: Likewise.
+	* sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise.
+	* sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise.
+	* sysdeps/unix/sysv/linux/sh/libc.abilist: Likewise.
+	* sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Likewise.
+	* sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise.
+	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist: Likewise.
+	* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist: Likewise.
+	* sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist: Likewise.
+	* sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise.
+	* sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise.
+
 2016-10-25  Joseph Myers  <joseph@codesourcery.com>
 
 	* sysdeps/powerpc/powerpc32/power6/memset.S (memset): Use cmplwi
diff --git a/NEWS b/NEWS
index 6439040a28..897f1cfa77 100644
--- a/NEWS
+++ b/NEWS
@@ -60,6 +60,9 @@ Version 2.25
 
   - NaN functions: getpayload, getpayloadf, getpayloadl.
 
+* The functions strfromd, strfromf, and strfroml, from ISO/IEC TS 18661-1:2014,
+  are added to libc.  They convert a floating-point number into string.
+
 * The <sys/quota.h> header now includes the <linux/quota.h> header.  Support
   for the Linux quota interface which predates kernel version 2.4.22 has
   been removed.
diff --git a/manual/arith.texi b/manual/arith.texi
index e53988a083..eaaf2b7127 100644
--- a/manual/arith.texi
+++ b/manual/arith.texi
@@ -20,6 +20,7 @@ These functions are declared in the header files @file{math.h} and
 * Complex Numbers::             The types.  Writing complex constants.
 * Operations on Complex::       Projection, conjugation, decomposition.
 * Parsing of Numbers::          Converting strings to numbers.
+* Printing of Floats::          Converting floating-point numbers to strings.
 * System V Number Conversion::  An archaic way to convert numbers to strings.
 @end menu
 
@@ -2806,6 +2807,46 @@ which take an additional argument, the locale to use in conversion.
 
 See also @ref{Parsing of Integers}.
 
+@node Printing of Floats
+@section Printing of Floats
+
+@pindex stdlib.h
+The @samp{strfrom} functions are declared in @file{stdlib.h}.
+
+@comment stdlib.h
+@comment ISO/IEC TS 18661-1
+@deftypefun int strfromd (char *restrict @var{string}, size_t @var{size}, const char *restrict @var{format}, double @var{value})
+@deftypefunx int strfromf (char *restrict @var{string}, size_t @var{size}, const char *restrict @var{format}, float @var{value})
+@deftypefunx int strfroml (char *restrict @var{string}, size_t @var{size}, const char *restrict @var{format}, long double @var{value})
+@safety{@prelim{}@mtsafe{@mtslocale{}}@asunsafe{@ascuheap{}}@acunsafe{@acsmem{}}}
+@comment these functions depend on __printf_fp and __printf_fphex, which are
+@comment AS-unsafe (ascuheap) and AC-unsafe (acsmem).
+The functions @code{strfromd} (``string-from-double''), @code{strfromf}
+(``string-from-float''), and @code{strfroml} (``string-from-long-double'')
+convert the floating-point number @var{value} to a string of characters and
+stores them into the area pointed to by @var{string}.  The conversion
+writes at most @var{size} characters and respects the format specified by
+@var{format}.
+
+The format string must start with the character @samp{%}.  An optional
+precision follows, which starts with a period, @samp{.}, and may be
+followed by a decimal integer, representing the precision.  If a decimal
+integer is not specified after the period, the precision is taken to be
+zero.  The character @samp{*} is not allowed.  Finally, the format string
+ends with one of the following conversion specifiers: @samp{a}, @samp{A},
+@samp{e}, @samp{E}, @samp{f}, @samp{F}, @samp{g} or @samp{G} (@pxref{Table
+of Output Conversions}).  Invalid format strings result in undefined
+behavior.
+
+These functions return the number of characters that would have been
+written to @var{string} had @var{size} been sufficiently large, not
+counting the terminating null character.  Thus, the null-terminated output
+has been completely written if and only if the returned value is less than
+@var{size}.
+
+These functions were introduced by ISO/IEC TS 18661-1.
+@end deftypefun
+
 @node System V Number Conversion
 @section Old-fashioned System V number-to-string functions
 
diff --git a/stdlib/Makefile b/stdlib/Makefile
index de3ecbbaa0..3cacb8b3f6 100644
--- a/stdlib/Makefile
+++ b/stdlib/Makefile
@@ -46,6 +46,7 @@ routines	:=							      \
 	drand48_r erand48_r lrand48_r nrand48_r mrand48_r jrand48_r	      \
 	srand48_r seed48_r lcong48_r					      \
 	drand48-iter							      \
+	strfromf strfromd strfroml					      \
 	strtol strtoul strtoll strtoull					      \
 	strtol_l strtoul_l strtoll_l strtoull_l				      \
 	strtof strtod strtold						      \
@@ -122,6 +123,12 @@ CFLAGS-fmtmsg.c = -fexceptions
 CFLAGS-strfmon.c = $(libio-mtsafe)
 CFLAGS-strfmon_l.c = $(libio-mtsafe)
 
+# The strfrom class of functions call __printf_fp in order to convert the
+# floating-point value to characters.  This requires the value of IO_MTSAFE_IO.
+CFLAGS-strfromd.c = $(libio-mtsafe)
+CFLAGS-strfromf.c = $(libio-mtsafe)
+CFLAGS-strfroml.c = $(libio-mtsafe)
+
 CFLAGS-tst-bsearch.c = $(stack-align-test-flags)
 CFLAGS-tst-qsort.c = $(stack-align-test-flags)
 CFLAGS-tst-makecontext.c += -funwind-tables
diff --git a/stdlib/Versions b/stdlib/Versions
index 9c06b43986..54416b7ea6 100644
--- a/stdlib/Versions
+++ b/stdlib/Versions
@@ -112,6 +112,10 @@ libc {
   GLIBC_2.24 {
     quick_exit;
   }
+  GLIBC_2.25 {
+    # s*
+    strfromd; strfromf; strfroml;
+  }
   GLIBC_PRIVATE {
     # functions which have an additional interface since they are
     # are cancelable.
diff --git a/stdlib/bits/stdlib-ldbl.h b/stdlib/bits/stdlib-ldbl.h
index acff499165..52fdc492d4 100644
--- a/stdlib/bits/stdlib-ldbl.h
+++ b/stdlib/bits/stdlib-ldbl.h
@@ -30,6 +30,10 @@ __END_NAMESPACE_C99
 __LDBL_REDIR1_DECL (strtold_l, strtod_l)
 #endif
 
+#if __GLIBC_USE (IEC_60559_BFP_EXT)
+__LDBL_REDIR1_DECL (strfroml, strfromd)
+#endif
+
 #ifdef __USE_MISC
 __LDBL_REDIR1_DECL (qecvt, ecvt)
 __LDBL_REDIR1_DECL (qfcvt, fcvt)
diff --git a/stdlib/stdlib.h b/stdlib/stdlib.h
index f0dc951acf..48f9a9500e 100644
--- a/stdlib/stdlib.h
+++ b/stdlib/stdlib.h
@@ -21,7 +21,8 @@
 
 #ifndef	_STDLIB_H
 
-#include <features.h>
+#define __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION
+#include <bits/libc-header-start.h>
 
 /* Get size_t, wchar_t and NULL from <stddef.h>.  */
 #define		__need_size_t
@@ -178,6 +179,21 @@ extern unsigned long long int strtoull (const char *__restrict __nptr,
 __END_NAMESPACE_C99
 #endif /* ISO C99 or use MISC.  */
 
+/* Convert a floating-point number to a string.  */
+#if __GLIBC_USE (IEC_60559_BFP_EXT)
+extern int strfromd (char *__dest, size_t __size, const char *__format,
+		     double __f)
+     __THROW __nonnull ((3));
+
+extern int strfromf (char *__dest, size_t __size, const char *__format,
+		     float __f)
+     __THROW __nonnull ((3));
+
+extern int strfroml (char *__dest, size_t __size, const char *__format,
+		     long double __f)
+     __THROW __nonnull ((3));
+#endif
+
 
 #ifdef __USE_GNU
 /* The concept of one static locale per category is not very well
diff --git a/stdlib/strfrom-skeleton.c b/stdlib/strfrom-skeleton.c
new file mode 100644
index 0000000000..8fd1beb7aa
--- /dev/null
+++ b/stdlib/strfrom-skeleton.c
@@ -0,0 +1,149 @@
+/* Convert a floating-point number to string.
+   Copyright (C) 2016 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, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* Generic implementation for strfrom functions.  The implementation is generic
+   for several floating-point types (e.g.: float, double), so that each
+   function, such as strfromf and strfroml, share the same code, thus avoiding
+   code duplication.  */
+
+#include <ctype.h>
+#include "../libio/libioP.h"
+#include "../libio/strfile.h"
+#include <printf.h>
+#include <string.h>
+#include <locale/localeinfo.h>
+
+#define UCHAR_T char
+#define L_(Str) Str
+#define ISDIGIT(Ch) isdigit (Ch)
+#include "stdio-common/printf-parse.h"
+
+int
+STRFROM (char *dest, size_t size, const char *format, FLOAT f)
+{
+  _IO_strnfile sfile;
+#ifdef _IO_MTSAFE_IO
+  sfile.f._sbf._f._lock = NULL;
+#endif
+
+  int done;
+
+  /* Single-precision values need to be stored in a double type, because
+     __printf_fp_l and __printf_fphex do not accept the float type.  */
+  union {
+    double flt;
+    FLOAT value;
+  } fpnum;
+  const void *fpptr;
+  fpptr = &fpnum;
+
+  /* Variables to control the output format.  */
+  int precision = -1; /* printf_fp and printf_fphex treat this internally.  */
+  int specifier;
+  struct printf_info info;
+
+  /* Single-precision values need to be converted into double-precision,
+     because __printf_fp and __printf_fphex only accept double and long double
+     as the floating-point argument.  */
+  if (__builtin_types_compatible_p (FLOAT, float))
+    fpnum.flt = f;
+  else
+    fpnum.value = f;
+
+  /* Check if the first character in the format string is indeed the '%'
+     character.  Otherwise, abort.  */
+  if (*format == '%')
+    format++;
+  else
+    abort ();
+
+  /* The optional precision specification always starts with a '.'.  If such
+     character is present, read the precision.  */
+  if (*format == '.')
+    {
+      format++;
+
+      /* Parse the precision.  */
+      if (ISDIGIT (*format))
+	precision = read_int (&format);
+      /* If only the period is specified, the precision is taken as zero, as
+	 described in ISO/IEC 9899:2011, section 7.21.6.1, 4th paragraph, 3rd
+	 item.  */
+      else
+	precision = 0;
+    }
+
+  /* Now there is only the conversion specifier to be read.  */
+  switch (*format)
+    {
+    case 'a':
+    case 'A':
+    case 'e':
+    case 'E':
+    case 'f':
+    case 'F':
+    case 'g':
+    case 'G':
+      specifier = *format;
+      break;
+    default:
+      abort ();
+    }
+
+  /* The following code to prepare the virtual file has been adapted from the
+     function _IO_vsnprintf from libio.  */
+
+  if (size == 0)
+    {
+    /* When size is zero, nothing is written and dest may be a null pointer.
+       This is specified for snprintf in ISO/IEC 9899:2011, Section 7.21.6.5,
+       in the second paragraph.  Thus, if size is zero, prepare to use the
+       overflow buffer right from the start.  */
+      dest = sfile.overflow_buf;
+      size = sizeof (sfile.overflow_buf);
+    }
+
+  /* Prepare the virtual string file.  */
+  _IO_no_init (&sfile.f._sbf._f, _IO_USER_LOCK, -1, NULL, NULL);
+  _IO_JUMPS (&sfile.f._sbf) = &_IO_strn_jumps;
+  _IO_str_init_static_internal (&sfile.f, dest, size - 1, dest);
+
+  /* Prepare the format specification for printf_fp.  */
+  memset (&info, '\0', sizeof (info));
+
+  /* The functions strfromd and strfromf pass a floating-point number with
+     double precision to printf_fp, whereas strfroml passes a floating-point
+     number with long double precision.  The following line informs printf_fp
+     which type of floating-point number is being passed.  */
+  info.is_long_double = __builtin_types_compatible_p (FLOAT, long double);
+
+  /* Set info according to the format string.  */
+  info.prec = precision;
+  info.spec = specifier;
+
+  if (info.spec != 'a' && info.spec != 'A')
+    done = __printf_fp_l (&sfile.f._sbf._f, _NL_CURRENT_LOCALE, &info, &fpptr);
+  else
+    done = __printf_fphex (&sfile.f._sbf._f, &info, &fpptr);
+
+  /* Terminate the string.  */
+  if (sfile.f._sbf._f._IO_buf_base != sfile.overflow_buf)
+    *sfile.f._sbf._f._IO_write_ptr = '\0';
+
+  return done;
+}
diff --git a/stdlib/strfromd.c b/stdlib/strfromd.c
new file mode 100644
index 0000000000..45a5790a1f
--- /dev/null
+++ b/stdlib/strfromd.c
@@ -0,0 +1,22 @@
+/* Definitions for strfromd.  Implementation in stdlib/strfrom-skeleton.c.
+   Copyright (C) 2016 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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define FLOAT		double
+#define STRFROM		strfromd
+
+#include "strfrom-skeleton.c"
diff --git a/stdlib/strfromf.c b/stdlib/strfromf.c
new file mode 100644
index 0000000000..f0b085844c
--- /dev/null
+++ b/stdlib/strfromf.c
@@ -0,0 +1,22 @@
+/* Definitions for strfromf.  Implementation in stdlib/strfrom-skeleton.c.
+   Copyright (C) 2016 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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define FLOAT		float
+#define STRFROM		strfromf
+
+#include "strfrom-skeleton.c"
diff --git a/stdlib/strfroml.c b/stdlib/strfroml.c
new file mode 100644
index 0000000000..8d5d15b0b9
--- /dev/null
+++ b/stdlib/strfroml.c
@@ -0,0 +1,22 @@
+/* Definitions for strfroml.  Implementation in stdlib/strfrom-skeleton.c.
+   Copyright (C) 2016 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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define FLOAT		long double
+#define STRFROM		strfroml
+
+#include "strfrom-skeleton.c"
diff --git a/sysdeps/arm/nacl/libc.abilist b/sysdeps/arm/nacl/libc.abilist
index 4d3b0b9fe3..807e43d935 100644
--- a/sysdeps/arm/nacl/libc.abilist
+++ b/sysdeps/arm/nacl/libc.abilist
@@ -1846,3 +1846,6 @@ GLIBC_2.25 GLIBC_2.25 A
 GLIBC_2.25 gnu_dev_major F
 GLIBC_2.25 gnu_dev_makedev F
 GLIBC_2.25 gnu_dev_minor F
+GLIBC_2.25 strfromd F
+GLIBC_2.25 strfromf F
+GLIBC_2.25 strfroml F
diff --git a/sysdeps/ieee754/ldbl-opt/Makefile b/sysdeps/ieee754/ldbl-opt/Makefile
index 4c7db9e353..239dd0efa5 100644
--- a/sysdeps/ieee754/ldbl-opt/Makefile
+++ b/sysdeps/ieee754/ldbl-opt/Makefile
@@ -24,6 +24,7 @@ libnldbl-calls = asprintf dprintf fprintf fscanf fwprintf fwscanf iovfscanf \
 		 vdprintf_chk obstack_printf_chk obstack_vprintf_chk \
 		 syslog syslog_chk vsyslog vsyslog_chk \
 		 strfmon strfmon_l \
+		 strfroml \
 		 strtold strtold_l strtoldint wcstold wcstold_l wcstoldint \
 		 qecvt qfcvt qgcvt qecvt_r qfcvt_r \
 		 isinf isnan finite signbit scalb log2 lgamma_r ceil \
diff --git a/sysdeps/ieee754/ldbl-opt/nldbl-strfroml.c b/sysdeps/ieee754/ldbl-opt/nldbl-strfroml.c
new file mode 100644
index 0000000000..d6df69e418
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-opt/nldbl-strfroml.c
@@ -0,0 +1,8 @@
+#include "nldbl-compat.h"
+
+int
+attribute_hidden
+strfroml (char *dest, size_t size, const char *format, long double f)
+{
+  return strfromd (dest, size, format, f);
+}
diff --git a/sysdeps/unix/sysv/linux/aarch64/libc.abilist b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
index 2c2f49e85b..77accdf5c1 100644
--- a/sysdeps/unix/sysv/linux/aarch64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
@@ -2090,3 +2090,6 @@ GLIBC_2.23 fts64_set F
 GLIBC_2.24 GLIBC_2.24 A
 GLIBC_2.24 quick_exit F
 GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 strfromd F
+GLIBC_2.25 strfromf F
+GLIBC_2.25 strfroml F
diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist
index 8afba471f7..659b7fcf37 100644
--- a/sysdeps/unix/sysv/linux/alpha/libc.abilist
+++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist
@@ -2001,6 +2001,9 @@ GLIBC_2.23 fts64_set F
 GLIBC_2.24 GLIBC_2.24 A
 GLIBC_2.24 quick_exit F
 GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 strfromd F
+GLIBC_2.25 strfromf F
+GLIBC_2.25 strfroml F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/arm/libc.abilist b/sysdeps/unix/sysv/linux/arm/libc.abilist
index de3bdf46fc..8bc979ad7f 100644
--- a/sysdeps/unix/sysv/linux/arm/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arm/libc.abilist
@@ -91,6 +91,9 @@ GLIBC_2.23 fts64_set F
 GLIBC_2.24 GLIBC_2.24 A
 GLIBC_2.24 quick_exit F
 GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 strfromd F
+GLIBC_2.25 strfromf F
+GLIBC_2.25 strfroml F
 GLIBC_2.4 GLIBC_2.4 A
 GLIBC_2.4 _Exit F
 GLIBC_2.4 _IO_2_1_stderr_ D 0xa0
diff --git a/sysdeps/unix/sysv/linux/hppa/libc.abilist b/sysdeps/unix/sysv/linux/hppa/libc.abilist
index 3261b9395d..299b705156 100644
--- a/sysdeps/unix/sysv/linux/hppa/libc.abilist
+++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist
@@ -1855,6 +1855,9 @@ GLIBC_2.23 fts64_set F
 GLIBC_2.24 GLIBC_2.24 A
 GLIBC_2.24 quick_exit F
 GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 strfromd F
+GLIBC_2.25 strfromf F
+GLIBC_2.25 strfroml F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/i386/libc.abilist b/sysdeps/unix/sysv/linux/i386/libc.abilist
index 6465a555b1..f00345f673 100644
--- a/sysdeps/unix/sysv/linux/i386/libc.abilist
+++ b/sysdeps/unix/sysv/linux/i386/libc.abilist
@@ -2013,6 +2013,9 @@ GLIBC_2.23 fts64_set F
 GLIBC_2.24 GLIBC_2.24 A
 GLIBC_2.24 quick_exit F
 GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 strfromd F
+GLIBC_2.25 strfromf F
+GLIBC_2.25 strfroml F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/ia64/libc.abilist b/sysdeps/unix/sysv/linux/ia64/libc.abilist
index 4536271b6e..e5fcf88b18 100644
--- a/sysdeps/unix/sysv/linux/ia64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/ia64/libc.abilist
@@ -1877,6 +1877,9 @@ GLIBC_2.23 fts64_set F
 GLIBC_2.24 GLIBC_2.24 A
 GLIBC_2.24 quick_exit F
 GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 strfromd F
+GLIBC_2.25 strfromf F
+GLIBC_2.25 strfroml F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
index 287d7a5df9..8f382f680b 100644
--- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
@@ -92,6 +92,9 @@ GLIBC_2.23 fts64_set F
 GLIBC_2.24 GLIBC_2.24 A
 GLIBC_2.24 quick_exit F
 GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 strfromd F
+GLIBC_2.25 strfromf F
+GLIBC_2.25 strfroml F
 GLIBC_2.4 GLIBC_2.4 A
 GLIBC_2.4 _Exit F
 GLIBC_2.4 _IO_2_1_stderr_ D 0x98
diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
index c9229fa94f..320b7fef5f 100644
--- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
@@ -1969,6 +1969,9 @@ GLIBC_2.23 fts64_set F
 GLIBC_2.24 GLIBC_2.24 A
 GLIBC_2.24 quick_exit F
 GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 strfromd F
+GLIBC_2.25 strfromf F
+GLIBC_2.25 strfroml F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/microblaze/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/libc.abilist
index 04097919b6..21b14262c6 100644
--- a/sysdeps/unix/sysv/linux/microblaze/libc.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/libc.abilist
@@ -2090,3 +2090,6 @@ GLIBC_2.23 fts64_set F
 GLIBC_2.24 GLIBC_2.24 A
 GLIBC_2.24 quick_exit F
 GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 strfromd F
+GLIBC_2.25 strfromf F
+GLIBC_2.25 strfroml F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
index f31653e584..5c4b596c54 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
@@ -1944,6 +1944,9 @@ GLIBC_2.23 fts64_set F
 GLIBC_2.24 GLIBC_2.24 A
 GLIBC_2.24 quick_exit F
 GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 strfromd F
+GLIBC_2.25 strfromf F
+GLIBC_2.25 strfroml F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
index a56bd992f7..001fa6c129 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
@@ -1942,6 +1942,9 @@ GLIBC_2.23 fts64_set F
 GLIBC_2.24 GLIBC_2.24 A
 GLIBC_2.24 quick_exit F
 GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 strfromd F
+GLIBC_2.25 strfromf F
+GLIBC_2.25 strfroml F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
index 44552df7b0..2d870013f7 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
@@ -1940,6 +1940,9 @@ GLIBC_2.23 fts64_set F
 GLIBC_2.24 GLIBC_2.24 A
 GLIBC_2.24 quick_exit F
 GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 strfromd F
+GLIBC_2.25 strfromf F
+GLIBC_2.25 strfroml F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
index 8d2a09dc9c..aa1ee66ab7 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
@@ -1935,6 +1935,9 @@ GLIBC_2.23 fts64_set F
 GLIBC_2.24 GLIBC_2.24 A
 GLIBC_2.24 quick_exit F
 GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 strfromd F
+GLIBC_2.25 strfromf F
+GLIBC_2.25 strfroml F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/nios2/libc.abilist b/sysdeps/unix/sysv/linux/nios2/libc.abilist
index 0443b92361..2471d68e87 100644
--- a/sysdeps/unix/sysv/linux/nios2/libc.abilist
+++ b/sysdeps/unix/sysv/linux/nios2/libc.abilist
@@ -2131,3 +2131,6 @@ GLIBC_2.23 fts64_set F
 GLIBC_2.24 GLIBC_2.24 A
 GLIBC_2.24 quick_exit F
 GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 strfromd F
+GLIBC_2.25 strfromf F
+GLIBC_2.25 strfroml F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
index ba9a29a3bd..4b0cde8faf 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
@@ -1973,6 +1973,9 @@ GLIBC_2.23 fts64_set F
 GLIBC_2.24 GLIBC_2.24 A
 GLIBC_2.24 quick_exit F
 GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 strfromd F
+GLIBC_2.25 strfromf F
+GLIBC_2.25 strfroml F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
index f19534c7b8..0557c16130 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
@@ -1978,6 +1978,9 @@ GLIBC_2.23 fts64_set F
 GLIBC_2.24 GLIBC_2.24 A
 GLIBC_2.24 quick_exit F
 GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 strfromd F
+GLIBC_2.25 strfromf F
+GLIBC_2.25 strfroml F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist
index f8de1ab30b..821384ebd6 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist
@@ -2178,3 +2178,6 @@ GLIBC_2.23 fts64_set F
 GLIBC_2.24 GLIBC_2.24 A
 GLIBC_2.24 quick_exit F
 GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 strfromd F
+GLIBC_2.25 strfromf F
+GLIBC_2.25 strfroml F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist
index 6819133256..c40a3f1cba 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist
@@ -92,6 +92,9 @@ GLIBC_2.23 fts64_set F
 GLIBC_2.24 GLIBC_2.24 A
 GLIBC_2.24 quick_exit F
 GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 strfromd F
+GLIBC_2.25 strfromf F
+GLIBC_2.25 strfroml F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 _Exit F
 GLIBC_2.3 _IO_2_1_stderr_ D 0xe0
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
index 4cd5d85e42..5b39a60638 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
@@ -1973,6 +1973,9 @@ GLIBC_2.23 fts64_set F
 GLIBC_2.24 GLIBC_2.24 A
 GLIBC_2.24 quick_exit F
 GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 strfromd F
+GLIBC_2.25 strfromf F
+GLIBC_2.25 strfroml F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
index 8cdb9df0c8..a9db32f6c2 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
@@ -1874,6 +1874,9 @@ GLIBC_2.23 fts64_set F
 GLIBC_2.24 GLIBC_2.24 A
 GLIBC_2.24 quick_exit F
 GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 strfromd F
+GLIBC_2.25 strfromf F
+GLIBC_2.25 strfroml F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/sh/libc.abilist b/sysdeps/unix/sysv/linux/sh/libc.abilist
index 69791b4911..294af0a501 100644
--- a/sysdeps/unix/sysv/linux/sh/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sh/libc.abilist
@@ -1859,6 +1859,9 @@ GLIBC_2.23 fts64_set F
 GLIBC_2.24 GLIBC_2.24 A
 GLIBC_2.24 quick_exit F
 GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 strfromd F
+GLIBC_2.25 strfromf F
+GLIBC_2.25 strfroml F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
index fce58a8e88..32747bd22d 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
@@ -1965,6 +1965,9 @@ GLIBC_2.23 fts64_set F
 GLIBC_2.24 GLIBC_2.24 A
 GLIBC_2.24 quick_exit F
 GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 strfromd F
+GLIBC_2.25 strfromf F
+GLIBC_2.25 strfroml F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
index 16ce7399bf..b0ac4d4472 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
@@ -1903,6 +1903,9 @@ GLIBC_2.23 fts64_set F
 GLIBC_2.24 GLIBC_2.24 A
 GLIBC_2.24 quick_exit F
 GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 strfromd F
+GLIBC_2.25 strfromf F
+GLIBC_2.25 strfroml F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist
index f99c298211..4d92d81b85 100644
--- a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libc.abilist
@@ -2097,3 +2097,6 @@ GLIBC_2.23 fts64_set F
 GLIBC_2.24 GLIBC_2.24 A
 GLIBC_2.24 quick_exit F
 GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 strfromd F
+GLIBC_2.25 strfromf F
+GLIBC_2.25 strfroml F
diff --git a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist
index c601ab0ee2..a68aef7bb7 100644
--- a/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libc.abilist
@@ -2097,3 +2097,6 @@ GLIBC_2.23 fts64_set F
 GLIBC_2.24 GLIBC_2.24 A
 GLIBC_2.24 quick_exit F
 GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 strfromd F
+GLIBC_2.25 strfromf F
+GLIBC_2.25 strfroml F
diff --git a/sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist b/sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist
index f99c298211..4d92d81b85 100644
--- a/sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist
+++ b/sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist
@@ -2097,3 +2097,6 @@ GLIBC_2.23 fts64_set F
 GLIBC_2.24 GLIBC_2.24 A
 GLIBC_2.24 quick_exit F
 GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 strfromd F
+GLIBC_2.25 strfromf F
+GLIBC_2.25 strfroml F
diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
index 8e6fa57974..b8623fc59f 100644
--- a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
@@ -1854,6 +1854,9 @@ GLIBC_2.23 fts64_set F
 GLIBC_2.24 GLIBC_2.24 A
 GLIBC_2.24 quick_exit F
 GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 strfromd F
+GLIBC_2.25 strfromf F
+GLIBC_2.25 strfroml F
 GLIBC_2.3 GLIBC_2.3 A
 GLIBC_2.3 __ctype_b_loc F
 GLIBC_2.3 __ctype_tolower_loc F
diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
index 1e12f48ec9..a61d874dfe 100644
--- a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
@@ -2097,3 +2097,6 @@ GLIBC_2.23 fts64_set F
 GLIBC_2.24 GLIBC_2.24 A
 GLIBC_2.24 quick_exit F
 GLIBC_2.25 GLIBC_2.25 A
+GLIBC_2.25 strfromd F
+GLIBC_2.25 strfromf F
+GLIBC_2.25 strfroml F